CA2591910A1 - Plastic plate for lining concrete components - Google Patents
Plastic plate for lining concrete components Download PDFInfo
- Publication number
- CA2591910A1 CA2591910A1 CA002591910A CA2591910A CA2591910A1 CA 2591910 A1 CA2591910 A1 CA 2591910A1 CA 002591910 A CA002591910 A CA 002591910A CA 2591910 A CA2591910 A CA 2591910A CA 2591910 A1 CA2591910 A1 CA 2591910A1
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- plastic plate
- elements
- plate according
- flow
- flow elements
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- 239000004033 plastic Substances 0.000 title claims abstract description 93
- 230000000694 effects Effects 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 238000004873 anchoring Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 7
- 230000009969 flowable effect Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000007774 longterm Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 229920001780 ECTFE Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/13—Roll-over protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
- F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
- F15D1/0035—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of riblets
- F15D1/0045—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of riblets oriented essentially perpendicular to the direction of flow
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- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/13—Roll-over protection
- B60R2021/132—Roll bars for convertible vehicles
- B60R2021/134—Roll bars for convertible vehicles movable from a retracted to a protection position
- B60R2021/135—Roll bars for convertible vehicles movable from a retracted to a protection position automatically during an accident
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Lining And Supports For Tunnels (AREA)
- Sewage (AREA)
- Finishing Walls (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Road Signs Or Road Markings (AREA)
- Road Paving Structures (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention relates to a plastic plate for lining concrete components through which a fluid medium flows. Said plastic plate is provided with a plurality of anchor elements (10) which are mounted on the side (1B) thereof oriented towards the concrete component wall and which make it possible to positively fixe said plastic plate to the concrete component. The side (1A) of the plastic plate oriented to a medium is provided with a plurality of adjacent flow elements (4) which are embodied in the form of elevated structures comprising an upstream flank (4A) oriented in a flow direction (9) and an oppositely oriented downstream flank (4B), wherein the superficial areas located between the flow elements are smoothly shaped. In such a manner, it makes it possible to increase a dragging effect of medium-carried particles in order to avoid solid deposits even at a low flowrate. In the preferred embodiment, the flow elements are constructed in the form of narrow webs which have a wedge-shaped cross section and are distributed in individual rows (IV) side by side transversally to the longitudinal axis (5) of the plastic plate.
Description
WO 2006/111418 May 22, 2007 AGRU Kunststofftechnik GmbH A 1040 Plastic plate for lining concrete components The invention relates to a plastic plate for lining concrete components, in particular concrete pipes, through which a flowable medium flows. Furthermore, the invention relates to an arrangement of plastic plates for lining concrete components.
For the purpose of lining concrete containers which contain liquid or gaseous chemicals, plastic plates are known which protect the concrete against the chemicals. Such plastic plates are repeatedly glued to the concrete component.
Since the smooth surface of the plastic plates does not, however, enter into a firm mechanical connection with the concrete, there is a risk of the plastic plates becoming detached in the course of time.
There are known from WO 01/57340 Al plastic plates which comprise a plurality of anchoring elements on the side facing the concrete component, said anchoring elements entering into a form-fit connection with the concrete during concreting.
The anchoring elements are embodied as splayed wing elements which have support webs in their foot region.
The plastic plates with anchoring elements known from WO 01/57340 Al have been tried and tested in practice for the lining of concrete containers which need to be protected against chemicals. Pipelines which convey a flowable medium, i.e.
a liquid or gaseous medium, could in principle also be lined with the known plastic plates.
For the purpose of lining concrete containers which contain liquid or gaseous chemicals, plastic plates are known which protect the concrete against the chemicals. Such plastic plates are repeatedly glued to the concrete component.
Since the smooth surface of the plastic plates does not, however, enter into a firm mechanical connection with the concrete, there is a risk of the plastic plates becoming detached in the course of time.
There are known from WO 01/57340 Al plastic plates which comprise a plurality of anchoring elements on the side facing the concrete component, said anchoring elements entering into a form-fit connection with the concrete during concreting.
The anchoring elements are embodied as splayed wing elements which have support webs in their foot region.
The plastic plates with anchoring elements known from WO 01/57340 Al have been tried and tested in practice for the lining of concrete containers which need to be protected against chemicals. Pipelines which convey a flowable medium, i.e.
a liquid or gaseous medium, could in principle also be lined with the known plastic plates.
In order to offer the least possible resistance to the medium, an attempt is made in principle to design the surface of the lining as smooth as possible. The drawback, however, is that solid bodies which are contained in the medium can become deposited in the course of time at the pipe wall, especially in the region of pipe bends and branches as well as in sections with a reduced or widened cross-section.
The deposits number among the typical damage patterns, especially in mixed sewage systems which are subjected to extreme fluctuations in the flow volume.
There is known from EP 1 194 712 B 1 a pipeline whose wall has a structured surface, which comprises a plurality of parallelepiped- or pyramid-shaped raised portions. It has been shown that with the structured surface a boundary layer is formed at the pipe wall, the effect of which is that the capacity for entraining particles carried along in the medium is increased. The tendency for particles to adhere to the wall is accordingly greatly reduced. This effect is generally referred to as an increase in the entrainment effect of the particles carried along in the medium.
EP 1 194 712 B1 proposes either providing the wall of the pipe with the structured surface or pulling into the pipe a tubular stretched film or plate insert which is glued to the pipe.
The problem underlying the invention is to line in a straightforward manner concrete components of differing design through which a flowable medium flows, in such a way that the concrete components are protected against aggressive media, without the risk of particles contained in the media becoming deposited at the wall of the concrete components.
According to the invention, the solution to this problem takes place with the features of claims 1 and 22 respectively.
In order to line the concrete components, use is made according to the invention not of a tubular film or plate insert, but of plastic plates which are connected to one another to form a body which lines the component. Since the plastic plates have a sufficient flexibility, there is the possibility of lining not only rectangular, but also tubular concrete components. After the insertion of the plastic plates into the concrete component, the plates are preferably welded together.
The plastic plate according to the invention has on the side facing the medium a plurality of flow elements arranged beside one another, which are embodied as raised structures with an upstream flank pointing in the flow direction and a downstream flank pointing against the flow direction, wherein the surface areas lying between the flow elements are smooth. The entrainment effect of particles carried along in the medium is thus increased even at low flow rates and with a discontinuous operation. On the side facing away from the medium, the plastic plate has a plurality of anchoring elements, so that the plastic plate can be connected in a form-fit manner to the concrete component.
It has been shown in numerous tests that the entrainment effect of the particles carried along in the medium can be increased if the raised structures offer a certain resistance to the flowable medium. This is achieved by the fact that the raised structures are embodied by an upstream flank pointing in the flow direction and a downstream flank pointing against the flow direction. This effect occurs especially when the flanks of the flow elements pointing in the flow direction are steeper than the flanks pointing against the flow direction. The flow elements thus exhibit a wedge-shaped cross-section. It has proved to be advantageous if the upstream flanks of the flow elements pointing in the flow direction form an angle of 70 to 90 , preferably 80 to 90 , in particular approx. 90 , with the smooth surface areas of the plastic plate The downstream flanks of the flow elements pointing against the flow direction preferably form an angle of 30 to 60 , also preferably 40 to 50 , in particular approx. 45 , with the smooth surface areas of the plastic plate.
In a preferred embodiment, the plastic plate is divided into two halves, the flow elements being arranged in a mirror-inverted fashion on the two halves. The flow elements are preferably arranged beside one another in individual rows in each case on a common axis. It has proved to be advantageous for the distance between the flow elements on a row to be smaller than that of the length of the flow elements.
In another preferred embodiment, the flow elements are embodied as elongated raised portions. Elongated raised portions are understood to mean raised portions which have an extension in the longitudinal direction that is a multiple of the extension in the transverse direction. The flow elements embodied as elongated raised portions preferably taper to a point at the ends. It is however also possible for the flow elements to be rounded off at the ends.
It has been shown in tests that a particularly great entrainment effect can be achieved if the longitudinal axes of the flow elements embodied as elongated raised portions form an angle of 30 to 60 , also preferably 40 to 50 , in particular approx.
45 , with the longitudinal direction of the plastic plates, which runs in the flow direction of the flowable medium. The elongated raised portions are preferably arranged in individual rows in each case on a common axis, the plastic plates preferably being divided into two halves on which the flow elements are arranged in a mirror-inverted fashion. A rib-shaped surface structure with narrow webs is thus created, wherein the axes on which the elongated raised portions lie run obliquely to the flow direction.
Further preferred configurations of the flow elements and the anchoring elements are the subject-matter of the sub-claims.
An example of embodiment of the invention is explained in detail below by reference to the drawings.
The deposits number among the typical damage patterns, especially in mixed sewage systems which are subjected to extreme fluctuations in the flow volume.
There is known from EP 1 194 712 B 1 a pipeline whose wall has a structured surface, which comprises a plurality of parallelepiped- or pyramid-shaped raised portions. It has been shown that with the structured surface a boundary layer is formed at the pipe wall, the effect of which is that the capacity for entraining particles carried along in the medium is increased. The tendency for particles to adhere to the wall is accordingly greatly reduced. This effect is generally referred to as an increase in the entrainment effect of the particles carried along in the medium.
EP 1 194 712 B1 proposes either providing the wall of the pipe with the structured surface or pulling into the pipe a tubular stretched film or plate insert which is glued to the pipe.
The problem underlying the invention is to line in a straightforward manner concrete components of differing design through which a flowable medium flows, in such a way that the concrete components are protected against aggressive media, without the risk of particles contained in the media becoming deposited at the wall of the concrete components.
According to the invention, the solution to this problem takes place with the features of claims 1 and 22 respectively.
In order to line the concrete components, use is made according to the invention not of a tubular film or plate insert, but of plastic plates which are connected to one another to form a body which lines the component. Since the plastic plates have a sufficient flexibility, there is the possibility of lining not only rectangular, but also tubular concrete components. After the insertion of the plastic plates into the concrete component, the plates are preferably welded together.
The plastic plate according to the invention has on the side facing the medium a plurality of flow elements arranged beside one another, which are embodied as raised structures with an upstream flank pointing in the flow direction and a downstream flank pointing against the flow direction, wherein the surface areas lying between the flow elements are smooth. The entrainment effect of particles carried along in the medium is thus increased even at low flow rates and with a discontinuous operation. On the side facing away from the medium, the plastic plate has a plurality of anchoring elements, so that the plastic plate can be connected in a form-fit manner to the concrete component.
It has been shown in numerous tests that the entrainment effect of the particles carried along in the medium can be increased if the raised structures offer a certain resistance to the flowable medium. This is achieved by the fact that the raised structures are embodied by an upstream flank pointing in the flow direction and a downstream flank pointing against the flow direction. This effect occurs especially when the flanks of the flow elements pointing in the flow direction are steeper than the flanks pointing against the flow direction. The flow elements thus exhibit a wedge-shaped cross-section. It has proved to be advantageous if the upstream flanks of the flow elements pointing in the flow direction form an angle of 70 to 90 , preferably 80 to 90 , in particular approx. 90 , with the smooth surface areas of the plastic plate The downstream flanks of the flow elements pointing against the flow direction preferably form an angle of 30 to 60 , also preferably 40 to 50 , in particular approx. 45 , with the smooth surface areas of the plastic plate.
In a preferred embodiment, the plastic plate is divided into two halves, the flow elements being arranged in a mirror-inverted fashion on the two halves. The flow elements are preferably arranged beside one another in individual rows in each case on a common axis. It has proved to be advantageous for the distance between the flow elements on a row to be smaller than that of the length of the flow elements.
In another preferred embodiment, the flow elements are embodied as elongated raised portions. Elongated raised portions are understood to mean raised portions which have an extension in the longitudinal direction that is a multiple of the extension in the transverse direction. The flow elements embodied as elongated raised portions preferably taper to a point at the ends. It is however also possible for the flow elements to be rounded off at the ends.
It has been shown in tests that a particularly great entrainment effect can be achieved if the longitudinal axes of the flow elements embodied as elongated raised portions form an angle of 30 to 60 , also preferably 40 to 50 , in particular approx.
45 , with the longitudinal direction of the plastic plates, which runs in the flow direction of the flowable medium. The elongated raised portions are preferably arranged in individual rows in each case on a common axis, the plastic plates preferably being divided into two halves on which the flow elements are arranged in a mirror-inverted fashion. A rib-shaped surface structure with narrow webs is thus created, wherein the axes on which the elongated raised portions lie run obliquely to the flow direction.
Further preferred configurations of the flow elements and the anchoring elements are the subject-matter of the sub-claims.
An example of embodiment of the invention is explained in detail below by reference to the drawings.
In the figures:
Fig. 1 shows a cutout of a plastic plate according to the invention in plan view, Fig. 2 shows a section through the plastic plate from fig. 1 along line A-A in an enlarged representation, Fig. 3 shows a section through the plastic plate from fig. 1 along line B-B in an enlarged representation, Fig. 4 shows an enlarged cutout of the plastic plate from fig. 1 in plan view, Fig. 5 shows a side view of adjacent anchoring elements of the plastic plate from fig. 1 in an enlarged representation and Fig. 6 shows on enlarged cutout of the plastic plate from fig. 1 in a view from beneath.
Fig. 1 shows a cutout of the plastic plate according to the invention in plan view.
The plastic plate is made of a thermoplastic material, in particular PVC, PE, PP, PVDF and ECTFE. The thickness of the plastic plate amounts to 1 to 5 mm, preferably 2 to 4 mm, so that on the one hand it exhibits sufficient strength, but on the other hand also sufficient flexibility for bending. In the example of embodiment, the plate is 2 mm thick. It can be made available as a strip material in different lengths.
The plastic plate has at side 1A facing the medium a region 1 with a structured surface, which is adjoined on both sides by non-structured smooth regions 2, which verge into smooth welding edges 3 at the upper and lower side. The surface structure, which occupies the major part of the total surface of the plastic plate, is embodied by a plurality of flow elements 4 which are each arranged beside one another in individual rows IV.
Flow elements 4 are embodied as elongated raised portions, which taper to a point at the ends. They form narrow webs which are in one piece with the plastic plate.
The narrow webs have a height of 2 to 8 mm, preferably 3 to 7 mm, also preferably 4 to 6 mm. In the example of embodiment, the narrow webs have a height a of approx.
mm. The webs have a length b of 20 to 140 mm, also preferably 40 to 120 mm, also preferably 60 to 100. In the example of embodiment, the narrow webs have a length of 85 mm. They preferably have a width c of 1 to 40 mm. The width of the webs is approx. 5 mm in the example of embodiment.
Region 1 with the structured surface is divided into a left-hand half 1' and a right-hand half 1". Narrow webs 4 are orientated in the left-hand and right-hand half in a mirror-inverted fashion with respect to longitudinal axis 5 of the plastic plate.
Longitudinal axes 6 of all the webs form an angle a of 30 to 60 , preferably 50 to 45 , with longitudinal axis 5 of the plastic plate, which corresponds to the flow direction of the medium. The angle is approx. 45 in the example of embodiment.
The longitudinal axes of webs 4 arranged in each case in a row IV lie on a common axis. Spacing d of webs 4 lying on common axis 6 is smaller than length b of the webs. Spacing e between individual rows IV of the webs is smaller than length b of the webs, but larger than spacing d between the webs.
Webs 4 arranged in left-hand and right-hand half 1', 1" of the plastic plate are orientated in such a way that they point in flow direction 9. The webs each have an upstream flank 4A pointing in flow direction 9 and a downstream flank 4B
pointing against the flow direction. The decisive factor is that flank 4A pointing in the flow direction is steeper than the flank pointing against the flow direction. In this regard, the webs have a wedge-shaped cross-section. In the example of embodiment, flanks 4A of the webs pointing in the flow direction form an angle of approx. 90 with the surface of the plastic plate. Flanks 4B of webs 4 pointing against the flow direction form an angle of approx. 45 with the surface of plastic plate 1 in the example of embodiment. Flanks 4A pointing in the flow direction terminate at the foot point in a small radius, whereas flanks 4B pointing against the flow direction end in a sharp edge (fig. 3).
Rear side 1B of the plastic plate facing the concrete component is described below by reference to figs. 5 and 6. At the rear side, plastic plate 1 has, except in the region of welding edges 3, projecting anchoring elements 10 which are in one piece with the plastic plate. The anchoring elements located solely at the rear side of the plate are represented in outline in fig. 1. Anchoring elements 10 are embodied in each case as two splayed wing elements 11, 12, which are connected to one another by a support web 13. Wing elements 11, 12 transform continuously at the foot point in an arc 14 into the plastic plate. A relatively wide connection area of the wing elements with the plastic plate thus results. The height of support webs 13 amounts to at least 70%, preferably at least 80%, of the height of the wing elements.
The wing elements in each case forming an anchoring element 10 are arranged offset with respect to one another.
The embodiment of anchoring elements 10 at the rear side of plastic plate 1 is described in detail in WO 01/57340 Al, to which reference is expressly made for the purpose of the disclosure.
The plastic plate is a co-extruded plate, which comprises a sandwich structure with a first layer comprising the flow elements (4) and a second layer comprising the anchoring elements (9). The first and second layer are made from materials with different mechanical and/or chemical and/or optical properties. The first layer with flow elements 9 is made from a coloured plastic material, whereas the second layer with the anchoring elements is made from a non-coloured plastic material. It is therefore possible in a straightforward manner to monitor optically the wear on the first layer coming into contact with the medium. Thus, on the basis of the colour, it can be detected whether the first layer has been worn away. This monitoring can take place with a camera. Furthermore, the plastic material of the first layer is more abrasion-resistant than the material of the second layer.
For the lining of concrete components, in particular concrete pipes, the individual plastic plates are placed into the formwork of the concrete pipe and welded at their welding edges 3 to form a tubular lining. During concreting, the plastic plates are connected to the concrete component in a form-fit manner by means of anchoring elements 10. An increased long-term strength is achieved by this anchoring.
Flow elements 4 at the inside of the tubular lining increase the entrainment effect of the particles carried along in the medium and thus prevent the formation of deposits at the inner side of the pipe.
The decisive advantage of the plastic plate according to the invention lies in the fact that concrete components can be lined cost-effectively in a straightforward manner, a high long-term strength and entrainment effect being achieved. It should be noted that the increase in the entrainment effect with the preferred embodiment of the flow elements has its own inventive significance. This is because it would in principle also be possible to fix the plastic plates to the concrete component in a different manner from that with the anchoring elements. The increased long-term strength would not then be produced, but the advantage of the increased entrainment effect would take effect.
Fig. 1 shows a cutout of a plastic plate according to the invention in plan view, Fig. 2 shows a section through the plastic plate from fig. 1 along line A-A in an enlarged representation, Fig. 3 shows a section through the plastic plate from fig. 1 along line B-B in an enlarged representation, Fig. 4 shows an enlarged cutout of the plastic plate from fig. 1 in plan view, Fig. 5 shows a side view of adjacent anchoring elements of the plastic plate from fig. 1 in an enlarged representation and Fig. 6 shows on enlarged cutout of the plastic plate from fig. 1 in a view from beneath.
Fig. 1 shows a cutout of the plastic plate according to the invention in plan view.
The plastic plate is made of a thermoplastic material, in particular PVC, PE, PP, PVDF and ECTFE. The thickness of the plastic plate amounts to 1 to 5 mm, preferably 2 to 4 mm, so that on the one hand it exhibits sufficient strength, but on the other hand also sufficient flexibility for bending. In the example of embodiment, the plate is 2 mm thick. It can be made available as a strip material in different lengths.
The plastic plate has at side 1A facing the medium a region 1 with a structured surface, which is adjoined on both sides by non-structured smooth regions 2, which verge into smooth welding edges 3 at the upper and lower side. The surface structure, which occupies the major part of the total surface of the plastic plate, is embodied by a plurality of flow elements 4 which are each arranged beside one another in individual rows IV.
Flow elements 4 are embodied as elongated raised portions, which taper to a point at the ends. They form narrow webs which are in one piece with the plastic plate.
The narrow webs have a height of 2 to 8 mm, preferably 3 to 7 mm, also preferably 4 to 6 mm. In the example of embodiment, the narrow webs have a height a of approx.
mm. The webs have a length b of 20 to 140 mm, also preferably 40 to 120 mm, also preferably 60 to 100. In the example of embodiment, the narrow webs have a length of 85 mm. They preferably have a width c of 1 to 40 mm. The width of the webs is approx. 5 mm in the example of embodiment.
Region 1 with the structured surface is divided into a left-hand half 1' and a right-hand half 1". Narrow webs 4 are orientated in the left-hand and right-hand half in a mirror-inverted fashion with respect to longitudinal axis 5 of the plastic plate.
Longitudinal axes 6 of all the webs form an angle a of 30 to 60 , preferably 50 to 45 , with longitudinal axis 5 of the plastic plate, which corresponds to the flow direction of the medium. The angle is approx. 45 in the example of embodiment.
The longitudinal axes of webs 4 arranged in each case in a row IV lie on a common axis. Spacing d of webs 4 lying on common axis 6 is smaller than length b of the webs. Spacing e between individual rows IV of the webs is smaller than length b of the webs, but larger than spacing d between the webs.
Webs 4 arranged in left-hand and right-hand half 1', 1" of the plastic plate are orientated in such a way that they point in flow direction 9. The webs each have an upstream flank 4A pointing in flow direction 9 and a downstream flank 4B
pointing against the flow direction. The decisive factor is that flank 4A pointing in the flow direction is steeper than the flank pointing against the flow direction. In this regard, the webs have a wedge-shaped cross-section. In the example of embodiment, flanks 4A of the webs pointing in the flow direction form an angle of approx. 90 with the surface of the plastic plate. Flanks 4B of webs 4 pointing against the flow direction form an angle of approx. 45 with the surface of plastic plate 1 in the example of embodiment. Flanks 4A pointing in the flow direction terminate at the foot point in a small radius, whereas flanks 4B pointing against the flow direction end in a sharp edge (fig. 3).
Rear side 1B of the plastic plate facing the concrete component is described below by reference to figs. 5 and 6. At the rear side, plastic plate 1 has, except in the region of welding edges 3, projecting anchoring elements 10 which are in one piece with the plastic plate. The anchoring elements located solely at the rear side of the plate are represented in outline in fig. 1. Anchoring elements 10 are embodied in each case as two splayed wing elements 11, 12, which are connected to one another by a support web 13. Wing elements 11, 12 transform continuously at the foot point in an arc 14 into the plastic plate. A relatively wide connection area of the wing elements with the plastic plate thus results. The height of support webs 13 amounts to at least 70%, preferably at least 80%, of the height of the wing elements.
The wing elements in each case forming an anchoring element 10 are arranged offset with respect to one another.
The embodiment of anchoring elements 10 at the rear side of plastic plate 1 is described in detail in WO 01/57340 Al, to which reference is expressly made for the purpose of the disclosure.
The plastic plate is a co-extruded plate, which comprises a sandwich structure with a first layer comprising the flow elements (4) and a second layer comprising the anchoring elements (9). The first and second layer are made from materials with different mechanical and/or chemical and/or optical properties. The first layer with flow elements 9 is made from a coloured plastic material, whereas the second layer with the anchoring elements is made from a non-coloured plastic material. It is therefore possible in a straightforward manner to monitor optically the wear on the first layer coming into contact with the medium. Thus, on the basis of the colour, it can be detected whether the first layer has been worn away. This monitoring can take place with a camera. Furthermore, the plastic material of the first layer is more abrasion-resistant than the material of the second layer.
For the lining of concrete components, in particular concrete pipes, the individual plastic plates are placed into the formwork of the concrete pipe and welded at their welding edges 3 to form a tubular lining. During concreting, the plastic plates are connected to the concrete component in a form-fit manner by means of anchoring elements 10. An increased long-term strength is achieved by this anchoring.
Flow elements 4 at the inside of the tubular lining increase the entrainment effect of the particles carried along in the medium and thus prevent the formation of deposits at the inner side of the pipe.
The decisive advantage of the plastic plate according to the invention lies in the fact that concrete components can be lined cost-effectively in a straightforward manner, a high long-term strength and entrainment effect being achieved. It should be noted that the increase in the entrainment effect with the preferred embodiment of the flow elements has its own inventive significance. This is because it would in principle also be possible to fix the plastic plates to the concrete component in a different manner from that with the anchoring elements. The increased long-term strength would not then be produced, but the advantage of the increased entrainment effect would take effect.
Claims (22)
1. A plastic plate for lining concrete components through which a flowable medium flows, wherein the side (1A) of the plastic plate facing the wall of the concrete component has a plurality of anchoring elements (10), so that the plastic plate can be connected in a form-fit manner to the concrete component, characterised in that the side (1B) of the plastic plate facing the medium has a plurality of flow elements (4) arranged beside one another, which are embodied as raised structures with an upstream flank (4A) pointing in the flow direction (9) and a downstream flank (4B) pointing against the flow direction, wherein the surface areas of the plastic plate lying between the flow elements are smooth, so that the entrainment effect of particles carried along in the medium is increased.
2. The plastic plate according to claim 1, characterised in that the upstream flanks (4A) of the flow elements (4) pointing in the flow direction (9) are steeper than the downstream flanks (4B) pointing against the flow direction.
3. The plastic plate according to claim 1 or 2, characterised in that the upstream flanks (4A) of the flow elements (4) pointing in the flow direction (9) form an angle of 70 to 90°, preferably 80 to 90°, in particular approx. 90°, with the smooth surface areas of the plastic plate.
4. The plastic plate according to any one of claims 1 to 3, characterised in that the downstream flanks (4B) of the flow elements (4) pointing against the flow direction (9) form an angle of 30 to 60°, preferably 40 to 50°, in particular approx. 45°, with the smooth surface areas of the plastic plate.
5. The plastic plate according to any one of claims 1 to 4, characterised in that the plastic plate is divided into two halves (1, 1'), the flow elements (4) being arranged in a mirror-inverted fashion on the two halves.
6. The plastic plate according to any one of claims 1 to 5, characterised in that the flow elements (4) are arranged beside one another in individual rows (IV) in each case on a common axis (6).
7. The plastic plate according to any one of claims 1 to 6, characterised in that the spacing (d) between the flow elements (4) on a row (IV) is smaller than the length (b) of the flow elements.
8. The plastic plate according to any one of claims 1 to 7, characterised in that the common axes (6) on which the flow elements (4) are arranged form an angle of 30 to 60°, preferably 40 to 50°, in particular approx.
45°, with the longitudinal axis (5) of the plastic plate.
45°, with the longitudinal axis (5) of the plastic plate.
9. The plastic plate according to any one of claims 1 to 8, characterised in that the flow elements (4) are embodied as elongated raised portions.
10. The plastic plate according to claim 9, characterised in that the longitudinal axes (6) of the flow elements (4) embodied as elongated raised portions form an angle of 30 to 60°, preferably 40 to 50°, in particular approx. 45°, with the longitudinal axis (5) of the plastic plate.
11. The plastic plate according to claim 9 or 10, characterised in that the flow elements (4) embodied as elongated raised portions taper to a point at the ends.
12. The plastic plate according to any one of claims 9 to 11, characterised in that the flow elements (4) embodied as elongated raised portions have a height (a) of 2 to 8 mm, preferably 3 to 7 mm, also preferably 4 to 6 mm, in particular approx. 5 mm.
13. The plastic plate according to any one of claims 9 to 12, characterised in that the flow elements (4) embodied as elongated raised portions have a length (b) of 20 to 140 mm, preferably 40 to 120 mm, also preferably 60 to 100 mm, in particular approx. 80 mm.
14. The plastic plate according to any one of claims 9 to 13, characterised in that the flow elements (4) embodied as elongated raised portions have a width of 1 to 40 mm, preferably 1 to 10 mm, in particular approx. 5 mm.
15. The plastic plate according to any one of claims 1 to 14, characterised in that the anchoring elements (10) are embodied as splayed wing elements (11, 12), which have support webs (13) in their foot region.
16. The plastic plate according to claim 15, characterised in that the height of the support webs (13) amounts to at least 70%, preferably at least 80%, of the height of the wing elements (11, 12).
17. The plastic plate according to claim 15 or 16, characterised in that the wing elements (11, 12) have arc-shaped transition portions (14) in their foot region.
18. The plastic plate according to any one of claims 15 to 17, characterised in that in each case two wing elements (11, 12) are arranged offset with respect to one another and are connected to one another by at least one support web (13).
19. The plastic plate according to any one of claims 1 to 18, characterised in that the plastic plate has welding edges (3), at which the sides (1A, 1B) of the plastic plate facing towards and facing away from the medium are smooth.
20. The plastic plate according to any one of claims 1 to 19, characterised in that the plastic plate comprises a sandwich structure with a first layer comprising the flow elements (4) and a second layer comprising the anchoring elements (9).
21. The plastic plate according to claim 20, characterised in that the first and second layer are made from materials with different mechanical and/or chemical and/or optical properties.
22. An arrangement of plastic plates according to any one claims 1 to 21, wherein the plastic plates are connected to one another to form a body which lines the component.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05008845.9 | 2005-04-22 | ||
EP05008845A EP1715196B1 (en) | 2005-04-22 | 2005-04-22 | Synthetic panels to cover concrete constructions parts |
PCT/EP2006/003728 WO2006111418A2 (en) | 2005-04-22 | 2006-04-22 | Plastic plate for lining concrete components |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2591910A1 true CA2591910A1 (en) | 2006-10-26 |
CA2591910C CA2591910C (en) | 2014-04-15 |
Family
ID=34935590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2591910A Expired - Fee Related CA2591910C (en) | 2005-04-22 | 2006-04-22 | Plastic plate for lining concrete components |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP1715196B1 (en) |
JP (1) | JP4832509B2 (en) |
KR (1) | KR101322766B1 (en) |
CN (1) | CN101155998A (en) |
AT (1) | ATE535718T1 (en) |
AU (1) | AU2006237223B2 (en) |
BR (1) | BRPI0610504A2 (en) |
CA (1) | CA2591910C (en) |
DK (1) | DK1715196T3 (en) |
ES (1) | ES2377651T3 (en) |
PL (1) | PL1715196T3 (en) |
PT (1) | PT1715196E (en) |
SI (1) | SI1715196T1 (en) |
WO (1) | WO2006111418A2 (en) |
ZA (1) | ZA200704706B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104370010B (en) * | 2014-09-11 | 2017-01-18 | 韦琪琪 | Container of plastic and concrete structure |
CN104261004A (en) * | 2014-09-11 | 2015-01-07 | 韦琪琪 | Corrosive liquid storing method |
CN105951970A (en) * | 2016-04-28 | 2016-09-21 | 成都津泽环保工程有限责任公司 | Liner structure for concrete pipeline and concrete pipeline |
BE1026591B1 (en) * | 2018-09-06 | 2020-04-06 | M H C Nv | Concrete building element |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2405298A1 (en) * | 1974-02-04 | 1975-08-07 | Kloeckner Humboldt Deutz Ag | METHOD AND DEVICE FOR INCREASING THE SERVICE LIFE OF WEAR PARTS IN LIVERS, CYCLONES AND PIPES |
CH629267A5 (en) * | 1978-05-30 | 1982-04-15 | Escher Wyss Gmbh | MATERIAL DRAIN DEVICE FOR A PAPER MACHINE. |
DE3307147A1 (en) * | 1983-03-11 | 1984-09-13 | Vorošilovgradskij mašinostroitel'nyj institut SSSR, Vorošilovgrad | BODY OF A PIPELINE FITTING |
US4986496A (en) * | 1985-05-31 | 1991-01-22 | Minnesota Mining And Manufacturing | Drag reduction article |
US5070937A (en) * | 1991-02-21 | 1991-12-10 | American Standard Inc. | Internally enhanced heat transfer tube |
AU6563500A (en) * | 1999-07-14 | 2001-01-30 | Fitr Gesellschaft Fur Innovation Im Tief- Und Rohrleitungsbau Weimar M.b.H. | Conduits and conduit elements for transporting flowable media |
WO2001057340A1 (en) * | 2000-01-31 | 2001-08-09 | Alois Gruber Gmbh | Synthetic panel, especially for lining concrete building components |
-
2005
- 2005-04-22 ES ES05008845T patent/ES2377651T3/en active Active
- 2005-04-22 SI SI200531477T patent/SI1715196T1/en unknown
- 2005-04-22 DK DK05008845.9T patent/DK1715196T3/en active
- 2005-04-22 AT AT05008845T patent/ATE535718T1/en active
- 2005-04-22 EP EP05008845A patent/EP1715196B1/en not_active Not-in-force
- 2005-04-22 PL PL05008845T patent/PL1715196T3/en unknown
- 2005-04-22 PT PT05008845T patent/PT1715196E/en unknown
-
2006
- 2006-04-22 AU AU2006237223A patent/AU2006237223B2/en not_active Ceased
- 2006-04-22 KR KR1020077017464A patent/KR101322766B1/en active IP Right Grant
- 2006-04-22 BR BRPI0610504-1A patent/BRPI0610504A2/en not_active Application Discontinuation
- 2006-04-22 CN CNA2006800050201A patent/CN101155998A/en active Pending
- 2006-04-22 WO PCT/EP2006/003728 patent/WO2006111418A2/en not_active Application Discontinuation
- 2006-04-22 CA CA2591910A patent/CA2591910C/en not_active Expired - Fee Related
- 2006-04-22 JP JP2008507020A patent/JP4832509B2/en not_active Expired - Fee Related
-
2007
- 2007-06-08 ZA ZA200704706A patent/ZA200704706B/en unknown
Also Published As
Publication number | Publication date |
---|---|
KR101322766B1 (en) | 2013-10-29 |
WO2006111418A2 (en) | 2006-10-26 |
CN101155998A (en) | 2008-04-02 |
ZA200704706B (en) | 2009-08-26 |
AU2006237223B2 (en) | 2012-02-16 |
JP2008537077A (en) | 2008-09-11 |
BRPI0610504A2 (en) | 2012-01-10 |
EP1715196A1 (en) | 2006-10-25 |
PT1715196E (en) | 2012-01-17 |
EP1715196B1 (en) | 2011-11-30 |
ATE535718T1 (en) | 2011-12-15 |
SI1715196T1 (en) | 2012-04-30 |
AU2006237223A1 (en) | 2006-10-26 |
WO2006111418A8 (en) | 2007-08-02 |
WO2006111418A3 (en) | 2006-12-28 |
JP4832509B2 (en) | 2011-12-07 |
PL1715196T3 (en) | 2012-07-31 |
KR20080020978A (en) | 2008-03-06 |
CA2591910C (en) | 2014-04-15 |
DK1715196T3 (en) | 2012-03-05 |
ES2377651T3 (en) | 2012-03-29 |
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EEER | Examination request | ||
MKLA | Lapsed |
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