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WO2017116322A1 - System and method for forming continuous profiled tubes - Google Patents

System and method for forming continuous profiled tubes Download PDF

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Publication number
WO2017116322A1
WO2017116322A1 PCT/TR2015/050279 TR2015050279W WO2017116322A1 WO 2017116322 A1 WO2017116322 A1 WO 2017116322A1 TR 2015050279 W TR2015050279 W TR 2015050279W WO 2017116322 A1 WO2017116322 A1 WO 2017116322A1
Authority
WO
WIPO (PCT)
Prior art keywords
strip
edge
layer
distancing
forming
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.)
Ceased
Application number
PCT/TR2015/050279
Other languages
French (fr)
Inventor
Zafer Gemici
Tamer Birtane
Saim KENDIISLER
Umit GÜLER
Ismail Teke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MIR ARASTIRMA VE GELISTIRME AS
Original Assignee
MIR ARASTIRMA VE GELISTIRME AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MIR ARASTIRMA VE GELISTIRME AS filed Critical MIR ARASTIRMA VE GELISTIRME AS
Priority to PCT/TR2015/050279 priority Critical patent/WO2017116322A1/en
Priority to TR2018/14142A priority patent/TR201814142T1/en
Publication of WO2017116322A1 publication Critical patent/WO2017116322A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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
    • F16L7/00—Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • 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
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
    • 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
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies

Definitions

  • the present invention relates to a profiled tube with secured distance between layers, and production method thereof.
  • Modular tubes formed by winding are generally used in infrastructure applications such as drainage lines, sewer lines, rainwater piping systems, as well as at hydroelectric power plant conduits, disposal lines for industrial and domestic wastewater.
  • Related piping systems require high dimensions in terms of diameter and length of the conduits. Transportation of such high dimension pipes is highly difficult and expensive, and therefore conduit suppliers are pushed to manufacture the pipes on-site where the pipes are to be installed.
  • US 3 606 670 and US 4 209 043 describe production methods for forming spiral wound synthetic pipes.
  • Primary object of the present invention is to eliminate the above-mentioned shortcomings in the prior art.
  • a further object of the present invention is to provide a distancing strip for profiled multilayered tubes having a secured distance between its layers, and a profiled tube produced in an easy, economic and flexible manner.
  • a further object of the present invention is to provide a system and method for continuous production of such profiled tube.
  • the present invention proposes a profiled tube comprising a first layer made of a helically wound first strip and a second layer made of a helically wound second strip, the second layer having an inner diameter greater than the outer diameter of the first layer, wherein the first layer and the second layer are distanced by a distancing strip having a first edge connected to the first layer and a second edge connected to the second layer.
  • the present invention further proposes a distancing strip to be employed in such profiled tube; and also a system method for continuous production of such profiled tube.
  • Figure 1 represents a top-view of a system for continuous forming of profiled tubes from strips, according to the present invention.
  • Figure 2 shows (a) an exemplary perspective view of a profiled tube according to the present invention, wherein its layers are partly removed for better understanding; and (b) detailed views of assembly connections therein.
  • Figure 3 shows (a) an exemplary longitudinal cross section of layers constituting a profiled tube according to the present invention, (b) detailed views of assembly connections therein, and (c) an exemplary lateral section of a segment of a strip according to the present invention.
  • Figure 4 shows (a) exemplary perspective views of a first layer of a profiled tube according to the present invention, with detailed views thereof; and (b) exemplary perspective views of a second layer of a profiled tube according to the present invention, with detailed views thereof.
  • Figure 5 shows an exemplary perspective view of a wound distancing strip of a profiled tube according to the present invention (for better understanding, the first and second layers are not shown), with a detailed view thereof. Detailed Description of the Invention
  • the present invention proposes a system for continuous forming of profiled tubes from strips.
  • An exemplary top view of the system is provided in Fig.l.
  • the system (1000) comprises:
  • a first strip feeding unit (1002) configured for helically winding of a first strip (100) around the base (1001) thus forming a first layer (104) such that, in operation, a first edge (101) of the first strip (100) is overlapped by a second edge (102) of the first strip (100) in successive winding, and such that one side of the first strip (100) mainly forms an outer surface (105) of the first layer (104); and preferably a first adhering unit (1003) for adhering overlapping edges of the first strip (100),
  • a distancing strip feeding unit (1004) configured for helically winding of a distancing strip (110) by, in operation, connecting a first edge (111) of the distancing strip (110) onto the side of the first strip (100) mainly forming the outer surface (105) of the first layer (104); and preferably a further adhering unit (1005) configured for adhering the first edge (111) onto said side of the first strip (100), - a second strip feeding unit (1006) configured for helically winding of a second strip (120) around the first layer (104) thus forming a second layer (124) having an inner surface (125) facing the outer surface (105) of the first layer (104) , by, in operation, connecting a side of the second strip (120) mainly forming the inner surface (125) of the second layer (124) onto a second edge (112) of the distancing strip (110); and preferably an adhering unit (1007) configured for adhering the second edge onto said side of the second strip (120);
  • the system provides ability to continuously form profiled tubes from strips on-site, even by forming large-dimension pipes having diameters with order of magnitude of meter.
  • the system and materials can be loaded on a vehicle and brought to a site where the tube is needed, and production can be performed notwithstanding the desired length and diameter of the tube.
  • the present invention further proposes a profiled tube comprising a first layer (104) made of a helically wound first strip (100) and a second layer (124) made of a helically wound second strip (120).
  • the second layer (124) has an inner diameter greater than the outer diameter of the first layer (104), wherein the first layer (104) and the second layer (124) are distanced by a distancing strip (110).
  • a first edge (111) of the distancing strip (110) is connected to the first layer (104) and the second edge (112) of the distancing strip (110) is connected to the second layer (124).
  • a side of the first strip (100) forming an outer surface (105) of the first layer (104) comprises a groove (106) receiving the first edge (111), and a side of the second strip (120) forming an inner surface (125) of the second layer (124) comprises a groove (107) receiving the second edge (112).
  • first strip (100) and/or the second strip (120) comprise a longitudinal rib (135) on a first edge (101, 122) thereof and a complementary longitudinal groove (136) on a second edge receiving such rib (135) of a subsequent strip winding of the same layer (104, 124).
  • the present invention further proposes a method for continuous production of a profiled tube.
  • the method comprises the following subsequent steps: i. helically winding of a first strip (100) having a first edge (101) and a second edge (102), around a mainly cylindrical rotary base (1001) which is preferably with a mainly horizontal axis, thus forming a first layer (104) of tube and such that a side of the first strip (100) mainly forms an outer surface (105) of the first layer (104), wherein the first edge (101) of a winding and the second edge (102) of a subsequent winding on the first layer (104) are overlapped and preferably adhered;
  • a further strip (a distancing strip) (110) having a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), onto outer surface (105) of the first layer (104), the distancing strip (110) further comprising intermittent cuts (119) reaching from the second edge (112) towards the vicinity of the first edge (111), such that the distancing strip (110) comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111); wherein only the first edge (111) of the distancing strip (110) is connected and preferably adhered onto a side of the first strip (100) mainly forming the outer surface (105) of the first layer (104), such that the second edge (112) of the distancing strip (110) remains separate from the outer surface (105) of the first layer (104);
  • helically winding of a second strip (120) by overlapping the first edge (121) of a winding and the second edge (122) of a subsequent winding thereof, and by connecting the second strip (120) with the second edge (112) of the distancing strip (110), thus forming a second layer (124) of tube, such that a distance (D) mainly corresponding to a width (W) between the first edge
  • the adhering can be performed by feeding an adhesive (e.g. a polymeric material) to a connection zone to be adhered, preferably heating the zone (e.g. to a melting temperature of the polymeric material) preferably by blowing hot air, and connecting a suitable part of a corresponding strip thereto.
  • an adhesive e.g. a polymeric material
  • the zone e.g. to a melting temperature of the polymeric material
  • blowing hot air e.g. to a melting temperature of the polymeric material
  • connecting a suitable part of a corresponding strip thereto preferably, all of the strips (100, 110, 120) constituting the multilayer tube as well as the adhesive comprise the same polymer.
  • snap-fitting and adhering take place together, and a more reliable connection can thus be secured.
  • the first strip (100) or the second strip (120) comprises a longitudinal rib (135) on an edge (101, 122) thereof and a complementary longitudinal groove (136) on another edge (102, 121) receive such rib at a subsequent strip winding.
  • a side of the first strip (100) forming the outer surface (105) of the first layer (104) comprises a groove (106) receiving the first edge (111), and a surface of the second strip (130) forming the inner surface (125) of the second layer (124) comprises a groove (107) receiving the second edge (122).
  • the thickness of the distancing strip (110) is higher at the vicinity of the first edge (111) and second edge (112) (thus providing a high thickness edge portion as shown e.g. in Fig. 3(a)), and a side of the first strip (110) forming the outer surface (105) of the first layer (104) and a side of the second strip (120) forming the inner surface (125) of the second layer (124) both comprise grooves (106, 107, respectively) receiving corresponding edges (111, 112, respectively) of the distancing strip (110) in a snap-fit manner (not shown).
  • the distance between distal ends of a groove (106, 107) with respect to a side of a corresponding first strip (100) or second strip (120) can be narrower than said high thickness edge portion of the distancing strip (110).
  • a distal end (1066) of a groove (106, 107) can be inclined towards a central axis of the groove (e.g. as shown in Fig. 3(a) Detail B); such that the high thickness edge portion (111) of the distancing strip (110) gets snagged when pulled away from the corresponding groove (106, 107).
  • the first layer (104) and second layer (124) are formed using identical strips, i.e.
  • the first strip (100) and second strip (120) are identical in context of form and material.
  • the grooves (106, 107) of first and second strips should be aligned and face each other, and the first edge (111) and second edge (112) of the distancing strip (110) are placed into corresponding grooves (107 and 106, respectively), preferably also by adhering and/or in a snap-fit manner.
  • This alignment can be done by arranging a spool bearing the first strip and a spool bearing the second strip in a reversed manner with respect to each other.
  • the present invention further proposes a strip for employing as a distancing strip (110) for securing a distance between such first layer (104) and second layer (124).
  • the distancing strip (110) has two sides, a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), and intermittent cuts (119) reaching from the second edge (122) towards the vicinity of the first edge (111), such that the distancing strip (110) comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111).
  • one or more segment(s) (118) comprise a ridge (117) on a side and preferably also a corresponding cavity (116) on the other side, such that the ridge (117) and preferably also the cavity (116) are discontinuous in a longitudinal direction (LI) of the distancing strip (110) and thus both sides are uneven said longitudinal direction (LI). More preferably, the ridge (117) and preferably also the cavity (116) are discontinuous in a lateral direction (L2) of the strip (110), thus surface planarity of at least one side is disturbed from the first edge (111) to the second edge (112). This provides rigidity to the distancing strip due to a rugged structure. Thus, distance between two layers of a profiled tube, distance of which is secured using such distancing strip (110), can be better maintained under influence of radial forces.
  • the ridges (117) on consecutive segments (118) are formed on alternating sides of the distancing strip (110), as shown in Fig. 3(b).
  • This provides higher rigidity and stability to the distancing strip (110) when two edges thereof (111, 112) are forced towards each other.
  • the thickness of the strip is preferably higher at the vicinity of least one of the first edge (111) or second edge (112). This provides snap-on type securing of the edges (111, 112) on a suitable groove (107, 106) by assembly of a multilayer tube according to the present invention.
  • a distancing strip for profiled tubes having a secured distance between its layers, and a profiled tube produced in an easy, economic and flexible manner, is provided,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The present invention proposes a profiled tube comprising a first layer (104) made of a helically wound first strip (100) and a second layer (124) made of a helically wound second strip (120), the second layer (120) having an inner diameter greater than the outer diameter of the first layer (104), wherein the first layer (104) and the second layer (124) are distanced by a distancing strip (110) having a first edge (111) connected to the first layer (104) and a second edge (112) connected to the second layer (124). The present invention further proposes a distancing strip (110) to be employed in such profiled tube; and also a system method for continuous production of such profiled tube.

Description

SYSTEM AND METHOD FOR FORMING CONTINUOUS PROFILED TUBES
Technical Field of the Invention
The present invention relates to a profiled tube with secured distance between layers, and production method thereof. Background of the Invention
Modular tubes formed by winding are generally used in infrastructure applications such as drainage lines, sewer lines, rainwater piping systems, as well as at hydroelectric power plant conduits, disposal lines for industrial and domestic wastewater. Related piping systems require high dimensions in terms of diameter and length of the conduits. Transportation of such high dimension pipes is highly difficult and expensive, and therefore conduit suppliers are pushed to manufacture the pipes on-site where the pipes are to be installed. US 3 606 670 and US 4 209 043 describe production methods for forming spiral wound synthetic pipes.
It is also important to provide durable tubes, since the economic life of such infrastructure systems is usually planned to be several decades. Chemical endurance can be attributed to materials used, yet mechanical stability and robustness of a conduit should be obtained in an affordable, reliable design. The design should also be implemented easy and foolproof way. It is required to combine technical essentialities, with minimization of material and workmanship costs in a satisfactory manner.
Objects of the Invention
Primary object of the present invention is to eliminate the above-mentioned shortcomings in the prior art. A further object of the present invention is to provide a distancing strip for profiled multilayered tubes having a secured distance between its layers, and a profiled tube produced in an easy, economic and flexible manner.
A further object of the present invention is to provide a system and method for continuous production of such profiled tube.
Brief Description of the Invention
The present invention proposes a profiled tube comprising a first layer made of a helically wound first strip and a second layer made of a helically wound second strip, the second layer having an inner diameter greater than the outer diameter of the first layer, wherein the first layer and the second layer are distanced by a distancing strip having a first edge connected to the first layer and a second edge connected to the second layer. The present invention further proposes a distancing strip to be employed in such profiled tube; and also a system method for continuous production of such profiled tube. Brief Explanation of the Figures
The figures brief explanation of which are herewith provided is solely intended for providing a better understanding of the present invention and are as such not intended to define the scope of protection or the context in which said scope is to be interpreted in the absence of the description.
Figure 1 represents a top-view of a system for continuous forming of profiled tubes from strips, according to the present invention. Figure 2 shows (a) an exemplary perspective view of a profiled tube according to the present invention, wherein its layers are partly removed for better understanding; and (b) detailed views of assembly connections therein. Figure 3 shows (a) an exemplary longitudinal cross section of layers constituting a profiled tube according to the present invention, (b) detailed views of assembly connections therein, and (c) an exemplary lateral section of a segment of a strip according to the present invention.
Figure 4 shows (a) exemplary perspective views of a first layer of a profiled tube according to the present invention, with detailed views thereof; and (b) exemplary perspective views of a second layer of a profiled tube according to the present invention, with detailed views thereof.
Figure 5 shows an exemplary perspective view of a wound distancing strip of a profiled tube according to the present invention (for better understanding, the first and second layers are not shown), with a detailed view thereof. Detailed Description of the Invention
The present invention proposes a system for continuous forming of profiled tubes from strips. An exemplary top view of the system is provided in Fig.l. The system (1000) comprises:
- a mainly cylindrical rotary base (1001),
- a first strip feeding unit (1002) configured for helically winding of a first strip (100) around the base (1001) thus forming a first layer (104) such that, in operation, a first edge (101) of the first strip (100) is overlapped by a second edge (102) of the first strip (100) in successive winding, and such that one side of the first strip (100) mainly forms an outer surface (105) of the first layer (104); and preferably a first adhering unit (1003) for adhering overlapping edges of the first strip (100),
- a distancing strip feeding unit (1004) configured for helically winding of a distancing strip (110) by, in operation, connecting a first edge (111) of the distancing strip (110) onto the side of the first strip (100) mainly forming the outer surface (105) of the first layer (104); and preferably a further adhering unit (1005) configured for adhering the first edge (111) onto said side of the first strip (100), - a second strip feeding unit (1006) configured for helically winding of a second strip (120) around the first layer (104) thus forming a second layer (124) having an inner surface (125) facing the outer surface (105) of the first layer (104) , by, in operation, connecting a side of the second strip (120) mainly forming the inner surface (125) of the second layer (124) onto a second edge (112) of the distancing strip (110); and preferably an adhering unit (1007) configured for adhering the second edge onto said side of the second strip (120); a first edge (121) of the second strip (120) is overlapped by a second edge (122) of the second strip (120) in successive winding thereof; and preferably a second adhering unit (1008) for adhering overlapping edges (121, 122) of the second strip (120); and preferably a further adhering unit (1007) for adhering the second edge (112) onto said side of the second strip (120).
The system provides ability to continuously form profiled tubes from strips on-site, even by forming large-dimension pipes having diameters with order of magnitude of meter. The system and materials (including strips and also adhesives) can be loaded on a vehicle and brought to a site where the tube is needed, and production can be performed notwithstanding the desired length and diameter of the tube. The present invention further proposes a profiled tube comprising a first layer (104) made of a helically wound first strip (100) and a second layer (124) made of a helically wound second strip (120). The second layer (124) has an inner diameter greater than the outer diameter of the first layer (104), wherein the first layer (104) and the second layer (124) are distanced by a distancing strip (110). For securing the distance (between the first and second layers), a first edge (111) of the distancing strip (110) is connected to the first layer (104) and the second edge (112) of the distancing strip (110) is connected to the second layer (124).
Preferably, a side of the first strip (100) forming an outer surface (105) of the first layer (104) comprises a groove (106) receiving the first edge (111), and a side of the second strip (120) forming an inner surface (125) of the second layer (124) comprises a groove (107) receiving the second edge (112).
In a preferred embodiment, the first strip (100) and/or the second strip (120) comprise a longitudinal rib (135) on a first edge (101, 122) thereof and a complementary longitudinal groove (136) on a second edge receiving such rib (135) of a subsequent strip winding of the same layer (104, 124).
The present invention further proposes a method for continuous production of a profiled tube. The method comprises the following subsequent steps: i. helically winding of a first strip (100) having a first edge (101) and a second edge (102), around a mainly cylindrical rotary base (1001) which is preferably with a mainly horizontal axis, thus forming a first layer (104) of tube and such that a side of the first strip (100) mainly forms an outer surface (105) of the first layer (104), wherein the first edge (101) of a winding and the second edge (102) of a subsequent winding on the first layer (104) are overlapped and preferably adhered;
ii. helically winding of a further strip (a distancing strip) (110) having a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), onto outer surface (105) of the first layer (104), the distancing strip (110) further comprising intermittent cuts (119) reaching from the second edge (112) towards the vicinity of the first edge (111), such that the distancing strip (110) comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111); wherein only the first edge (111) of the distancing strip (110) is connected and preferably adhered onto a side of the first strip (100) mainly forming the outer surface (105) of the first layer (104), such that the second edge (112) of the distancing strip (110) remains separate from the outer surface (105) of the first layer (104);
iii. helically winding of a second strip (120) by overlapping the first edge (121) of a winding and the second edge (122) of a subsequent winding thereof, and by connecting the second strip (120) with the second edge (112) of the distancing strip (110), thus forming a second layer (124) of tube, such that a distance (D) mainly corresponding to a width (W) between the first edge
(111) and second edge (112) of the distancing strip (110), remains between the first layer (104) and second layer (124), and thus the second strip (120) is wound distantly around the first layer (104). The adhering can be performed by feeding an adhesive (e.g. a polymeric material) to a connection zone to be adhered, preferably heating the zone (e.g. to a melting temperature of the polymeric material) preferably by blowing hot air, and connecting a suitable part of a corresponding strip thereto. For easy and stronger adhesion, most preferably, all of the strips (100, 110, 120) constituting the multilayer tube as well as the adhesive comprise the same polymer. Preferably, snap-fitting and adhering take place together, and a more reliable connection can thus be secured.
In the method, preferably the first strip (100) or the second strip (120) comprises a longitudinal rib (135) on an edge (101, 122) thereof and a complementary longitudinal groove (136) on another edge (102, 121) receive such rib at a subsequent strip winding.
Preferably, a side of the first strip (100) forming the outer surface (105) of the first layer (104) comprises a groove (106) receiving the first edge (111), and a surface of the second strip (130) forming the inner surface (125) of the second layer (124) comprises a groove (107) receiving the second edge (122).
Preferably, the thickness of the distancing strip (110) is higher at the vicinity of the first edge (111) and second edge (112) (thus providing a high thickness edge portion as shown e.g. in Fig. 3(a)), and a side of the first strip (110) forming the outer surface (105) of the first layer (104) and a side of the second strip (120) forming the inner surface (125) of the second layer (124) both comprise grooves (106, 107, respectively) receiving corresponding edges (111, 112, respectively) of the distancing strip (110) in a snap-fit manner (not shown). For obtaining such snap- fit connection, the distance between distal ends of a groove (106, 107) with respect to a side of a corresponding first strip (100) or second strip (120) can be narrower than said high thickness edge portion of the distancing strip (110). Alternatively, a distal end (1066) of a groove (106, 107) can be inclined towards a central axis of the groove (e.g. as shown in Fig. 3(a) Detail B); such that the high thickness edge portion (111) of the distancing strip (110) gets snagged when pulled away from the corresponding groove (106, 107). More preferably, the first layer (104) and second layer (124) are formed using identical strips, i.e. the first strip (100) and second strip (120) are identical in context of form and material. In this case, the grooves (106, 107) of first and second strips should be aligned and face each other, and the first edge (111) and second edge (112) of the distancing strip (110) are placed into corresponding grooves (107 and 106, respectively), preferably also by adhering and/or in a snap-fit manner. This alignment can be done by arranging a spool bearing the first strip and a spool bearing the second strip in a reversed manner with respect to each other. The present invention further proposes a strip for employing as a distancing strip (110) for securing a distance between such first layer (104) and second layer (124). The distancing strip (110) has two sides, a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), and intermittent cuts (119) reaching from the second edge (122) towards the vicinity of the first edge (111), such that the distancing strip (110) comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111).
In a preferred embodiment of the distancing strip (110) according to the present invention, one or more segment(s) (118) comprise a ridge (117) on a side and preferably also a corresponding cavity (116) on the other side, such that the ridge (117) and preferably also the cavity (116) are discontinuous in a longitudinal direction (LI) of the distancing strip (110) and thus both sides are uneven said longitudinal direction (LI). More preferably, the ridge (117) and preferably also the cavity (116) are discontinuous in a lateral direction (L2) of the strip (110), thus surface planarity of at least one side is disturbed from the first edge (111) to the second edge (112). This provides rigidity to the distancing strip due to a rugged structure. Thus, distance between two layers of a profiled tube, distance of which is secured using such distancing strip (110), can be better maintained under influence of radial forces.
In a preferred embodiment, the ridges (117) on consecutive segments (118) are formed on alternating sides of the distancing strip (110), as shown in Fig. 3(b). This provides higher rigidity and stability to the distancing strip (110) when two edges thereof (111, 112) are forced towards each other. The thickness of the strip is preferably higher at the vicinity of least one of the first edge (111) or second edge (112). This provides snap-on type securing of the edges (111, 112) on a suitable groove (107, 106) by assembly of a multilayer tube according to the present invention.
Thus, the below objects are achieved by the composite structure according to the present invention and the proposed method for obtainment thereof:
- The above-mentioned shortcomings in the prior art are eliminated,
- A distancing strip for profiled tubes having a secured distance between its layers, and a profiled tube produced in an easy, economic and flexible manner, is provided,
- A system and method for obtainment of such profiled tube is provided.

Claims

A strip (110) for employing as a distancing strip for securing a distance between two layers of a multilayer tube, said strip having two sides, a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), the strip comprises intermittent cuts (119) reaching from the second edge (122) towards the vicinity of the first edge (111), such that the strip comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111).
Strip according to the claim 1, wherein one or more segment(s) (118) comprise a ridge (117) on a side and preferably also a corresponding cavity (116) on the other side, such that the ridge (117) and preferably also the cavity (116) are discontinuous in a longitudinal direction (LI) of the strip and thus both sides are uneven in a longitudinal direction (LI).
Strip according to the claim 2, wherein the ridge (117) and preferably also the cavity (116) are discontinuous in a lateral direction (L2) of the strip (110).
Strip according to any of the claims 1 to 3, wherein ridges (117) on consecutive segments (118) are formed on alternating sides of the strip (110).
Strip according to any of the claims 1 to 4, wherein the thickness of the strip (110) is higher at the vicinity of least one of the first edge (111) or second edge (112).
A profiled tube comprising a first layer (104) made of a helically wound first strip (100) and a second layer (124) made of a helically wound second strip (120), the second layer (124) having an inner diameter greater than the outer diameter of the first layer (104), wherein the first layer (104) and the second layer (124) are distanced by a strip according to any of the claims 1 to 5 serving as a distancing strip (110); wherein the first edge (111) is connected to the first layer (104) and the second edge (112) is connected to the second layer (124).
Profiled tube according to the claim 6, wherein a side of the first strip (100) forming an outer surface (105) of the first layer (104) comprises a groove (106) receiving the first edge (111), and a side of the second strip (120) forming an inner surface (125) of the second layer (124) comprises a groove (107) receiving the second edge (112).
Profiled tube according to any of the claims 6 or 7, wherein the first strip (100) and/or the second strip (120) comprise a longitudinal rib (135) on a first edge (101, 122) thereof and a complementary longitudinal groove (136) on a second edge receiving such rib (135) of a subsequent strip winding of same layer (104, 124).
A method for continuous production of profiled tube, comprising the following subsequent steps: a) helically winding of a first strip (100) having a first edge (101) and a second edge (102), around a mainly cylindrical rotary base (1001) which is preferably with a mainly horizontal axis, thus forming a first layer (104) of tube and such that a side of the first strip (100) mainly forms an outer surface (105) of the first layer (104), wherein the first edge (101) of a winding and the second edge (102) of a subsequent winding on the first layer (104) are overlapped and preferably adhered;
b) helically winding of a further strip (a distancing strip) (110) having a longitudinally continuous first edge (111) and a longitudinally discontinuous second edge (112), onto outer surface (105) of the first layer (104), the distancing strip (110) further comprising intermittent cuts (119) reaching from the second edge (112) towards the vicinity of the first edge (111), such that the distancing strip (110) comprises a series of segments (118) each being conjunct to adjacent segments (118) at the first edge (111); wherein only the first edge (111) of the distancing strip (110) is connected and preferably adhered onto a side of the first strip (100) mainly forming the outer surface (105) of the first layer (104), such that the second edge (112) of the distancing strip (110) remains separate from the outer surface (105) of the first layer (104);
c) helically winding of a second strip (120) by overlapping the first edge (121) of a winding and the second edge (122) of a subsequent winding thereof, and by connecting the second strip (120) with the second edge (112) of the distancing strip (110), thus forming a second layer (124) of tube, such that a distance (D) mainly corresponding to a width (W) between the first edge (111) and second edge (112) of the distancing strip (110), remains between the first layer (104) and second layer (124), and thus the second strip (120) is wound distantly around the first layer (104).
10. Method according to the claim 9, wherein the first strip (100) and/or the second strip (110) comprise a longitudinal rib (135) on a first edge (101, 122) thereof and a complementary longitudinal groove (136) on a second edge (102, 121) receive such rib (135) at a subsequent strip winding.
11. Method according to any of the claims 9 or 10, wherein a side of the first strip (100) forming the outer surface (105) of the first layer (104) comprises a groove
(106) receiving the first edge (111), and a surface of the second strip (130) forming the inner surface (125) of the second layer (124) comprises a groove
(107) receiving the second edge (122).
12. Method according to any of the claims 9 to 11, wherein the thickness of the distancing strip (110) is higher at the vicinity of the first edge (111) and second edges (112), and a side of the first strip (110) forming the outer surface (105) of the first layer (104) and a side of the second strip (120) forming the inner surface (125) of the second layer (124) both comprise grooves (106 and 107, respectively) receiving the edges (111 and 112, respectively) of the distancing strip (110) in a snap-fit manner.
13. Method according to any of the claims 9 to 12, wherein the adhering comprises applying an adhesive to a connection zone to be adhered, preferably heating the connection zone to a melting temperature of the adhesive, preferably by blowing hot air, connecting the strip to be adhered to corresponding connection zone.
14. Method according to the claim 13, wherein all of the strips (100, 110, 120) and the adhesive comprise the same polymer.
15. A system for continuously forming profiled tubes from strips, comprising a mainly cylindrical rotary base (1001),
a first strip feeding unit (1002) configured for helically winding of a first strip (100) around the base (1001) thus forming a first layer (104) such that, in operation, a first edge (101) of the first strip (100) is overlapped by a second edge (102) of the first strip (100) in successive winding, and such that one side of the first strip (100) mainly forms an outer surface (105) of the first layer (104); and preferably a first adhering unit (1003) for adhering overlapping edges of the first strip (100),
a distancing strip feeding unit (1004) configured for helically winding of a distancing strip (110) by, in operation, connecting a first edge (111) of the distancing strip (110) onto the side of the first strip (100) mainly forming the outer surface (105) of the first layer (104); and preferably a further adhering unit (1005) configured for adhering the first edge (111) onto said side of the first strip (100),
a second strip feeding unit (1006) configured for helically winding of a second strip (120) around the first layer (104) thus forming a second layer (124) having an inner surface (125) facing the outer surface (105) of the first layer (104), by, in operation, connecting a side of the second strip (120) mainly forming the inner surface (125) of the second layer (124) onto a second edge (112) of the distancing strip (110); and preferably an adhering unit (1007) configured for adhering the second edge onto said side of the second strip (120); a first edge (121) of the second strip (120) is overlapped by a second edge (122) of the second strip (120) in successive winding thereof; and a second adhering unit (1008) for adhering overlapping edges (121, 122) of the second strip (120); and preferably a further adhering unit (1007) for adhering the second edge (112) onto said side of the second strip (120).
PCT/TR2015/050279 2015-12-28 2015-12-28 System and method for forming continuous profiled tubes Ceased WO2017116322A1 (en)

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PCT/TR2015/050279 WO2017116322A1 (en) 2015-12-28 2015-12-28 System and method for forming continuous profiled tubes
TR2018/14142A TR201814142T1 (en) 2015-12-28 2016-12-28 System and method for forming continuous profile pipes.

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PCT/TR2015/050279 WO2017116322A1 (en) 2015-12-28 2015-12-28 System and method for forming continuous profiled tubes

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107631105A (en) * 2017-09-15 2018-01-26 四川师范大学 Liquefy shale gas liquefied nitrogen, superconducting cable compound energy pipe design method
CN107631104A (en) * 2017-09-15 2018-01-26 四川师范大学 Liquefy shale gas liquefied nitrogen, superconducting direct current cables compound energy pipe design method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308575A (en) * 1961-06-03 1962-11-09 Double-walled synthetic tubes, pipes and sheets, and method of manufacture
US3606670A (en) 1967-10-02 1971-09-21 Dynamit Nobel Ag Method for forming spiral wound synthetic pipes
US4209043A (en) 1977-10-18 1980-06-24 Rib Loc (Hong Kong) Ltd. Plastic tubular objects
EP1231423A1 (en) * 2001-02-13 2002-08-14 Eurotecnica Development & Licensing S.p.A. Reinforced multi-walled pipe and method for its manufacture
FR2871215A1 (en) * 2004-06-04 2005-12-09 Epsilon Composite Sarl Sarl PROCESS FOR MANUFACTURING A TUBE OF COMPOSITE MATERIAL OF HIGH STIFFNESS, AND TUBE OBTAINED

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308575A (en) * 1961-06-03 1962-11-09 Double-walled synthetic tubes, pipes and sheets, and method of manufacture
US3606670A (en) 1967-10-02 1971-09-21 Dynamit Nobel Ag Method for forming spiral wound synthetic pipes
US4209043A (en) 1977-10-18 1980-06-24 Rib Loc (Hong Kong) Ltd. Plastic tubular objects
EP1231423A1 (en) * 2001-02-13 2002-08-14 Eurotecnica Development & Licensing S.p.A. Reinforced multi-walled pipe and method for its manufacture
FR2871215A1 (en) * 2004-06-04 2005-12-09 Epsilon Composite Sarl Sarl PROCESS FOR MANUFACTURING A TUBE OF COMPOSITE MATERIAL OF HIGH STIFFNESS, AND TUBE OBTAINED

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107631105A (en) * 2017-09-15 2018-01-26 四川师范大学 Liquefy shale gas liquefied nitrogen, superconducting cable compound energy pipe design method
CN107631104A (en) * 2017-09-15 2018-01-26 四川师范大学 Liquefy shale gas liquefied nitrogen, superconducting direct current cables compound energy pipe design method
CN107631104B (en) * 2017-09-15 2019-01-22 四川师范大学 Design method of liquefied shale gas-liquid nitrogen-superconducting DC cable composite energy pipeline
CN107631105B (en) * 2017-09-15 2019-01-22 四川师范大学 Design method of liquefied shale gas-liquid nitrogen-superconducting DC cable composite energy pipeline

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