Prestressed carbon fiber plate winding reinforced pipeline production process and device

Abstract

The invention provides a production process and device for a prestressed carbon fiber plate winding reinforced pipeline. The production process and device are used for solving the technical problem that it is difficult to combine an existing pipeline and a composite material at low cost to improve the internal pressure resistance of the pipeline. The production process comprises the specific steps that S1, the connecting assemblies are installed at the two ends of the lining pipe, and the ribbed rings are sequentially installed on the outer wall of the lining pipe at intervals; s2, winding a carbon fiber plate on the lining pipe; s3, bonding and winding the starting end and the ending end of the wound carbon fiber plate by using fiber composite material cloth for reinforcement treatment, and wrapping and filling the outer side of the wound carbon fiber plate with a protective layer; and S4, an outer frame is installed on the outer side of the protection layer. The carbon fiber plate winding device is used for achieving rapid winding of the carbon fiber plate on the outer wall of the lining pipe, the carbon fiber plate and the lining pipe are tightly combined to form the composite pipeline, and the internal pressure resistance of the pipeline is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipelines, in particular to a production process and a device for prestressed carbon fiber plate winding and reinforcing pipelines. Background Art

[0002] Existing pipelines are all made of metal, composite plastic or reinforced concrete, and their ability to resist internal pressure is related to the thickness of the pipeline and the tensile strength of the material itself. In large-diameter, medium- and high-pressure water supply and drainage projects, after the parameters of the pipeline material itself are determined, in order to increase the pipeline's ability to resist internal pressure, the pipeline wall thickness needs to be increased, which greatly increases the material, weight and manufacturing cost of the pipeline, and is not conducive to pipeline transportation and installation.

[0003] Carbon fiber materials have high tensile strength and are also corrosion-resistant, making them excellent materials for making pipes. In the prior art, publication number CN117366381A (a pipe based on a carbon fiber reinforcement structure) uses carbon fiber and elastic reinforcement layers to make carbon fiber repair strips and paste them to the location of the damaged pipe to reinforce and repair it; however, during on-site construction, the damaged pipe is repaired by pasting carbon fiber cloth. The construction quality depends on the technical level of the on-site workers, and the reinforcement quality is not easy to quantify. Following the production process of glass fiber pipes, carbon fiber filaments are used for core rod winding and curing, but the efficiency is too low and the cost is extremely high. Generally, it can only be used to make small-diameter pipes for special purposes. Summary of the invention

[0004] The purpose of the present invention is to provide a production process and device for prestressed carbon fiber plate winding and reinforcement pipelines, which is used to solve the technical problem that it is difficult to combine existing pipelines with composite materials at low cost to improve the pipeline's ability to resist internal pressure.

[0005] A production process for a prestressed carbon fiber plate-wrapped reinforced pipe, the specific steps are:

[0006] S1: Install the connection components at both ends of the liner pipe;

[0007] S2: Winding a carbon fiber sheet on the liner tube;

[0008] S3: The fiber composite material cloth is bonded and wound within the starting end and the ending end of the wound carbon fiber plate for reinforcement, and a filling protective layer is wrapped around the outer side of the wound carbon fiber plate.

[0009] Optionally, the connection assembly is a socket-type connection assembly, a flange bolt-type connection assembly, or a welding connection assembly.

[0010] Optionally, the specific steps of winding the carbon fiber plate on the inner liner tube in step S2 are:

[0011] S2.1: Apply adhesive glue to the winding start end on the inner liner pipe, and press the starting end of the carbon fiber plate to the winding start end through a pressing plate;

[0012] S2.2: After the carbon fiber plate is evenly coated with glue on the glue coating box, it is spirally wound along the length direction of the liner pipe from the winding starting end;

[0013] S2.3: After the winding is completed, apply adhesive glue to the end of the winding, and press the end of the carbon fiber plate to the end of the winding by a pressing plate.

[0014] Optionally, the inner liner pipe is any one of a ribless metal single-layer pipe, a ribbed metal single-layer pipe, a non-metallic single-layer pipe, a reinforced concrete single-layer pipe and a single steel cylinder concrete pipe.

[0015] Optionally, the angle of the spiral winding is greater than 85° and less than 90°.

[0016] Optionally, the winding method of the carbon fiber plate is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type stacked winding.

[0017] Optionally, the inner liner pipe is a ribbed metal single-layer pipe, and step S1 also includes sequentially installing ribbed rings at intervals on the outer wall of the inner liner pipe.

[0018] Optionally, the method further includes step S4: installing an outer frame on the outer side of the protective layer, wherein the outer frame is a truss structure or a half structure.

[0019] A prestressed carbon fiber plate winding reinforced pipe production device, used to implement the above-mentioned prestressed carbon fiber plate winding reinforced pipe production process, including a carbon fiber plate winding device;

[0020] The carbon fiber plate winding device comprises a carbon fiber plate reel and a rotating lifting device, and the liner pipe is installed on the rotating lifting device;

[0021] A guide wheel group, a tension stabilizing device, a steering device and a glue coating box are arranged in sequence between the carbon fiber plate reel and the rotating lifting device. The front end of the carbon fiber plate reel passes through the guide wheel group, the tension stabilizing device, the steering device and the glue coating box in sequence and is fixed to the winding starting end of the inner liner pipe.

[0022] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0023] 1. The present application utilizes a carbon fiber plate winding device to achieve rapid winding of the carbon fiber plate on the outer wall of the inner liner pipe, and applies a certain pre-tension, so that the wound carbon fiber plate is tightly attached to the inner liner pipe through glue bonding and combined together to form an integrally stressed composite material pipe that can jointly withstand internal pressure loads and external pressure loads.

[0024] 2. The pre-tension on the carbon fiber plate will give the inner liner pipe wall material a certain pre-stress, delaying or postponing the process of tensile cracking of the inner liner pipe material under the internal pressure load, which helps to improve the pipeline's ability to resist internal pressure. For example, if the inner liner pipe is made of concrete material, the wrapped prestressed carbon fiber plate will give the concrete pipe wall a certain pre-stress reserve, so that it will not crack under the working internal pressure and maintain a good working condition.

[0025] 3. The present application uses a pressing plate to compress and fix the starting and ending ends of the carbon fiber plate, and glues it to the outer wall of the liner pipe. At the same time, the starting and ending ends are reinforced with fiber cloth, avoiding the complex structure of using special anchors at the starting and ending ends, and improving the strength reserve of the pipeline.

[0026] 4. In the spiral winding device of the carbon fiber plate, the use of a tension stabilizing device helps to maintain the pre-tension of the carbon fiber plate stable, reduce fluctuations, and improve the winding quality of the pipeline.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings of the present invention are as follows.

[0029] Figure 1 This is a flow chart of the method of the pipeline production process in Example 1 of the present invention.

[0030] Figure 2 This is a flow chart of the method for the pipeline production process in Example 2 of the present invention.

[0031] Figure 3 This is a flow chart of the method for the pipeline production process in Example 3 of the present invention.

[0032] Figure 4 This is a flow chart of the method of the pipeline production process in Example 4 of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of a carbon fiber plate wrapped around a reinforced pipe in Example 1 of the present invention.

[0034] Figure 6 This is a schematic diagram of the structure of the carbon fiber plate wrapped around the reinforced pipe in Example 2 of the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of the carbon fiber plate wrapped around the reinforced pipe in Example 3 of the present invention.

[0036] Figure 8 This is a schematic diagram of the structure of a carbon fiber plate wrapped around a reinforced pipe in Example 4 of the present invention.

[0037] Fig. 9 It is a structural schematic diagram of the Hough structure of the present invention.

[0038] Fig.10 It is a schematic structural diagram of the carbon fiber plate winding device of the present invention.

[0039] In the figure: 1- liner tube; 2- carbon fiber plate; 3- protective layer; 4- connection assembly; 41- male connector; 42- female connector; 43- connection flange; 44- bolt hole; 45- welding end; 5- pressure plate; 6- fiber composite cloth; 7- ribbed ring; 8- outer frame; 81- circular truss; 811- inner circular ring; 812- outer circular ring; 82- support rod; 83- polygonal connecting plate; 9- rotating lifting device; 10- carbon fiber plate reel; 11- guide wheel group; 12- tension stabilizing device; 13- steering device; 14- glue coating box. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] Embodiment 1:

[0042] like Figure 1 and Figure 5 A production process of a prestressed carbon fiber plate winding reinforced pipe is shown, the carbon fiber plate winding reinforced pipe comprises an inner liner pipe 1, a carbon fiber plate 2 is spirally wound on the outer wall of the inner liner pipe 1, a protective layer 3 is arranged on the outer wall of the carbon fiber plate 2, the inner liner pipe 1 is any one of a ribless metal single-layer pipe, a non-metallic single-layer pipe, a reinforced concrete single-layer pipe and a single-layer steel cylinder concrete pipe, and the specific steps of the production process are:

[0043] S1: Install the connection components 4 at both ends of the liner pipe 1;

[0044] In this embodiment, the connection component 4 is a welding connection component;

[0045] As an embodiment of the present invention, the welding connection assembly includes welding ends 45 arranged at both ends of the inner liner pipe 1. When the pipelines are connected, the two pipelines are butt-jointed with the welding ends 45 and welded.

[0046] In this embodiment, both ends of the liner pipe 1 are provided with transition connection sections for welding ends 45 .

[0047] S2: Winding the carbon fiber plate 2 on the inner liner tube 1; the specific steps are:

[0048] S2.1: Apply glue to the winding starting end of the inner liner tube 1, and press the starting end of the carbon fiber plate 2 to the winding starting end through the pressing plate 5;

[0049] S2.2: After the carbon fiber plate 2 is evenly coated with glue on the glue coating box 14, it is spirally wound along the length direction of the liner tube 1 from the winding starting end;

[0050] S2.3: Apply glue to the end of the winding. After the winding is completed, the end of the carbon fiber plate 2 is pressed tightly to the end of the winding by the pressing plate 5.

[0051] In this embodiment, the angle of the spiral winding is greater than 85° and less than 90°, and the spiral winding method is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type superimposed winding. The winding method can be selected according to the pressure requirement of the pipeline. Among them: single-layer sparse winding is a single-layer winding with a winding spacing between the side walls of the spiral carbon fiber plate 2; single-layer tight winding is a single-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2; multi-layer tight winding is a multi-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2. When the multi-layer winding is performed, the spiral winding is firstly wound from the starting end to the end, and then from the end to the starting end, and the above steps are repeated until the number of winding layers reaches the predetermined number of layers, and then step S2.3 is performed. The plate-type superimposed winding is a partial overlap between the adjacent carbon fiber plates 2 of the spiral winding, and the overlap width is between 2-3mm. By setting the overlap width, the overall sealing type of the pipeline is improved, and the mechanical properties of the carbon fiber layer are improved, which solves the technical problem that the compressive strength of the adjacent carbon fiber plates 2 or the carbon fiber filament side wall joint position is weak and easy to break when tightly wound. In this embodiment, when the glue is completely dry, the pressing plate 5 can be removed or retained.

[0052] S3: The fiber composite material cloth is bonded and wound in the range of the starting end and the ending end of the wound carbon fiber plate for reinforcement, and a filling protective layer 3 is wrapped around the outer side of the wound carbon fiber plate 2 .

[0053] In this embodiment, the protective layer 3 is a filled ordinary foam insulation layer, which has a heat preservation function to prevent the water in the pipeline from freezing in the freeze-thaw area. At the same time, it can also effectively prevent the carbon fiber layer from being damaged by direct collision during transportation or installation, thereby affecting its mechanical properties.

[0054] Embodiment 2:

[0055] like Figure 2 and Figure 6A production process of a prestressed carbon fiber plate winding reinforced pipe is shown, the carbon fiber plate winding reinforced pipe comprises an inner liner pipe 1, a plurality of ribbed rings 7 are sequentially arranged on the outer wall of the inner liner pipe 1, a carbon fiber plate 2 is spirally wound on the outer wall of the inner liner pipe 1, a fiber composite material cloth 6 is wound around the starting end and the ending end of the carbon fiber plate within a certain range, a protective layer 3 is arranged on the outer wall of the carbon fiber plate 2, the inner liner pipe 1 is a ribbed metal single-layer pipe, and the specific steps of the production process are:

[0056] S1: Install the connection components 4 at both ends of the inner liner pipe 1, and install the ribbed rings 7 on the outer wall of the inner liner pipe 1 in sequence and at intervals;

[0057] In this embodiment, the connection assembly 4 is a socket-type connection assembly or a bolt-type connection assembly;

[0058] As an embodiment of the present invention, the socket-type connection assembly includes a male connection head 41 and a female connection head 42 arranged at both ends of the inner liner pipe 1, and an annular sealing ring is sleeved on the outer wall of the male connection head 41. When the pipes are connected, the male connection head 41 of one pipe is inserted into the female connection head 42 of another pipe.

[0059] In this embodiment, transition connection sections are provided at both ends of the inner liner pipe 1 for installing the connecting male head 41 and the connecting female head 42. The connecting male head 41 and the connecting female head 42 are installed at both ends of the inner liner pipe 1 by welding.

[0060] As another embodiment of the present invention, the bolted connection assembly includes connecting flanges 43 arranged at both ends of the liner pipe 1. The connecting flanges 43 are installed at both ends of the liner pipe 1 by welding. A plurality of bolt holes 44 are arranged on the connecting flange 43 in a circular array along its axis. When the pipelines are connected, the connecting flanges 43 of adjacent pipelines are connected by bolts.

[0061] S2: Winding the carbon fiber plate 2 on the inner liner tube 1;

[0062] S2.1: Apply glue to the winding starting end of the inner liner tube 1, and press the starting end of the carbon fiber plate 2 to the winding starting end through the pressing plate 5;

[0063] S2.2: After the carbon fiber plate 2 is evenly coated with glue on the glue coating box 14, it is spirally wound along the length direction of the liner tube 1 from the winding starting end;

[0064] S2.3: Apply glue to the end of the winding. After the winding is completed, the end of the carbon fiber plate 2 is pressed tightly to the end of the winding by the pressing plate 5.

[0065] In this embodiment, the angle of the spiral winding is greater than 85° and less than 90°, and the spiral winding method is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type superimposed winding. The winding method can be selected according to the pressure requirement of the pipeline. Among them: single-layer sparse winding is a single-layer winding with a winding spacing between the side walls of the spiral carbon fiber plate 2; single-layer tight winding is a single-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2; multi-layer tight winding is a multi-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2. When the multi-layer winding is performed, the spiral winding is firstly wound from the starting end to the end, and then from the end to the starting end, and the above steps are repeated until the number of winding layers reaches the predetermined number of layers, and then step S2.3 is performed. The plate-type superimposed winding is a partial overlap between the adjacent carbon fiber plates 2 of the spiral winding, and the overlap width is between 2-3mm. By setting the overlap width, the overall sealing type of the pipeline is improved, and the mechanical properties of the carbon fiber layer are improved, which solves the technical problem that the compressive strength of the adjacent carbon fiber plates 2 or the carbon fiber filament side wall joint position is weak and easy to break when tightly wound. In this embodiment, the glue is epoxy resin, and when the glue is completely dry, the pressing plate 5 can be disassembled or retained.

[0066] S3: The fiber composite material cloth 6 is bonded and wrapped within a certain range between the starting end and the ending end of the wound carbon fiber plate for reinforcement, and a filling protective layer 3 is wrapped around the outer side of the wound carbon fiber plate 2 .

[0067] In this embodiment, the protective layer 3 is a filled ordinary foam insulation layer, which has a heat preservation function to prevent the water in the pipeline from freezing in the freeze-thaw area. At the same time, it can also effectively prevent the carbon fiber layer from being damaged by direct collision during transportation or installation, thereby affecting its mechanical properties.

[0068] Embodiment 3:

[0069] like Figure 3 , Figure 7 and Fig. 9 A production process of a prestressed carbon fiber plate winding reinforced pipe is shown, wherein the carbon fiber plate winding reinforced pipe comprises an inner liner pipe 1, a carbon fiber plate 2 is spirally wound on the outer wall of the inner liner pipe 1, and an outer frame 8 is sleeved on the outer side of the carbon fiber plate 2;

[0070] The outer frame 8 is coaxially arranged with the inner liner 1, and a protective layer 3 is filled between the outer frame 8 and the carbon fiber plate 2. The inner liner 1 is any one of a ribless metal single-layer tube, a non-metallic single-layer tube, a reinforced concrete single-layer tube and a single-layer steel cylinder concrete tube. The specific steps of the production process are:

[0071] S1: Install the connection components 4 at both ends of the liner pipe 1;

[0072] In this embodiment, the connection assembly 4 is a socket-type connection assembly or a bolt-type connection assembly;

[0073] As an embodiment of the present invention, the socket-type connection assembly includes a male connection head 41 and a female connection head 42 arranged at both ends of the inner liner pipe 1, and an annular sealing ring is sleeved on the outer wall of the male connection head 41. When the pipes are connected, the male connection head 41 of one pipe is inserted into the female connection head 42 of another pipe.

[0074] In this embodiment, transition connection sections are provided at both ends of the inner liner pipe 1 for installing the connecting male head 41 and the connecting female head 42. The connecting male head 41 and the connecting female head 42 are installed at both ends of the inner liner pipe 1 by welding.

[0075] As another embodiment of the present invention, the bolted connection assembly includes connecting flanges 43 arranged at both ends of the liner pipe 1. The connecting flanges 43 are installed at both ends of the liner pipe 1 by welding. A plurality of bolt holes 44 are arranged on the connecting flange 43 in a circular array along its axis. When the pipelines are connected, the connecting flanges 43 of adjacent pipelines are connected by bolts.

[0076] S2: Winding the carbon fiber plate 2 on the inner liner tube 1;

[0077] S2.1: Apply glue to the winding starting end of the inner liner tube 1, and press the starting end of the carbon fiber plate 2 to the winding starting end through the pressing plate 5;

[0078] S2.2: After the carbon fiber plate 2 is evenly coated with glue on the glue coating box 14, it is spirally wound along the length direction of the liner tube 1 from the winding starting end;

[0079] S2.3: Apply glue to the end of the winding. After the winding is completed, the end of the carbon fiber plate 2 is pressed tightly to the end of the winding by the pressing plate 5.

[0080] In this embodiment, the angle of the spiral winding is greater than 85° and less than 90°, and the spiral winding method is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type superimposed winding. The winding method can be selected according to the pressure requirement of the pipeline. Among them: single-layer sparse winding is a single-layer winding with a winding spacing between the side walls of the spiral carbon fiber plate 2; single-layer tight winding is a single-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2; multi-layer tight winding is a multi-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2. When the multi-layer winding is performed, the spiral winding is firstly wound from the starting end to the end, and then from the end to the starting end, and the above steps are repeated until the number of winding layers reaches the predetermined number of layers, and then step S2.3 is performed. The plate-type superimposed winding is a partial overlap between the adjacent carbon fiber plates 2 of the spiral winding, and the overlap width is between 2-3mm. By setting the overlap width, the overall sealing type of the pipeline is improved, and the mechanical properties of the carbon fiber layer are improved, which solves the technical problem that the compressive strength of the adjacent carbon fiber plates 2 or the carbon fiber filament side wall joint position is weak and easy to break when tightly wound. In this embodiment, the glue is epoxy resin, and when the glue is completely dry, the pressing plate 5 can be disassembled or retained.

[0081] S3: The fiber composite material cloth 6 is bonded and wound in the range of the starting end and the ending end of the wound carbon fiber plate for reinforcement, and the filling protective layer 3 is wrapped on the outside of the wound carbon fiber plate 2.

[0082] In this embodiment, the protective layer 3 is a filled ordinary foam barrier. By utilizing the large deformation property of foam, an isolation layer is formed between the outer frame and the carbon fiber plate reinforced pipe, so that the external load is mainly borne by the outer frame, protecting the carbon fiber pipe from the external load.

[0083] S4: Install an outer frame 8 outside the protective layer 3, wherein the outer frame 8 is a truss structure or a half structure.

[0084] As an embodiment of the present application, the outer frame 8 is a truss structure, and the outer frame 8 includes a plurality of circular trusses 81 fixedly installed at intervals, and support rods 82 for connecting the plurality of circular trusses 81, and the plurality of support rods 82 are arranged in a circular array along the axis of the circular trusses 81, and the circular trusses 81 include a coaxially arranged inner ring 811 and an outer ring 812, and the inner ring 811 and the outer ring 812 are connected by a plurality of connecting rods, and the plurality of inner rings 811 and the plurality of outer rings 812 are respectively connected by the support rods 82.

[0085] In this embodiment, when the outer frame 8 is installed, the ring trusses 81 are first sleeved on the outer side of the protective layer 3 in sequence, and a plurality of the ring trusses 81 are connected by support rods 82. When the connection assembly is a bolted connection assembly, the connection flanges 43 at both ends are connected to the two ends of the support rods 82 respectively.

[0086] As another embodiment of the present application, the outer frame 8 is a Hough structure, and the outer frame 8 includes two symmetrically arranged polygonal connecting plates 83;

[0087] The two polygonal connecting plates 83 are connected by a flange plate and bolts, and the two polygonal connecting plates are connected to form a polygonal tubular sleeve.

[0088] In this embodiment, when the outer frame 8 is installed, the two polygonal connecting plates 83 are buckled onto the outer side of the protective layer 3 and are fastened by bolts.

[0089] Embodiment 4:

[0090] like Figure 4 , Figure 8 and Fig. 9 A production process of a prestressed carbon fiber plate winding reinforced pipe is shown, the carbon fiber plate winding reinforced pipe comprises an inner liner pipe 1, a plurality of rib rings 7 are sequentially arranged on the outer wall of the inner liner pipe 1, a carbon fiber plate 2 is spirally wound on the outer wall of the inner liner pipe 1, and an outer frame 8 is sleeved on the outer side of the carbon fiber plate 2;

[0091] The outer frame 8 is coaxially arranged with the inner liner 1, a protective layer 3 is filled between the outer frame 8 and the carbon fiber plate 2, the inner liner 1 is a ribbed metal single-layer tube, and the specific steps of the production process are:

[0092] S1: Install the connection components 4 at both ends of the inner liner pipe 1, and install the ribbed rings 7 on the outer wall of the inner liner pipe 1 in sequence and at intervals;

[0093] In this embodiment, the connection assembly 4 is a socket-type connection assembly or a bolt-type connection assembly;

[0094] As an embodiment of the present invention, the bolted connection assembly includes connecting flanges 43 arranged at both ends of the liner pipe 1. The connecting flanges 43 are installed at both ends of the liner pipe 1 by welding. A plurality of bolt holes 44 are arranged on the connecting flange 43 in a circular array along its axis. When the pipelines are connected, the connecting flanges 43 of adjacent pipelines are connected by bolts.

[0095] As another embodiment of the present invention, the socket-type connection assembly includes a male connection head 41 and a female connection head 42 arranged at both ends of the inner liner pipe 1, and an annular sealing ring is sleeved on the outer wall of the male connection head 41. When the pipes are connected, the male connection head 41 of one pipe is inserted into the female connection head 42 of another pipe.

[0096] S2: Winding the carbon fiber plate 2 on the inner liner tube 1;

[0097] S2.1: Apply glue to the winding starting end of the inner liner tube 1, and press the starting end of the carbon fiber plate 2 to the winding starting end through the pressing plate 5;

[0098] S2.2: After the carbon fiber plate 2 is evenly coated with glue on the glue coating box 14, it is spirally wound along the length direction of the liner tube 1 from the winding starting end;

[0099] S2.3: Apply glue to the end of the winding. After the winding is completed, the end of the carbon fiber plate 2 is pressed tightly to the end of the winding by the pressing plate 5.

[0100] In this embodiment, the angle of the spiral winding is greater than 85° and less than 90°, and the spiral winding method is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type superimposed winding. The winding method can be selected according to the pressure requirement of the pipeline. Among them: single-layer sparse winding is a single-layer winding with a winding spacing between the side walls of the spiral carbon fiber plate 2; single-layer tight winding is a single-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2; multi-layer tight winding is a multi-layer winding with no winding spacing between the side walls of the spiral carbon fiber plate 2. When winding multiple layers, first spirally wind from the starting end to the end, and then spirally wind from the end to the starting end, repeat the above steps until the number of winding layers reaches the predetermined number of layers, and then execute step S2.3. The plate-type overlapping winding is a spiral winding in which adjacent carbon fiber plates 2 partially overlap, and the overlap width is between 2-3 mm. By setting the overlap width, the sealing type of the entire pipeline is improved, and at the same time, the mechanical properties of the carbon fiber layer are improved, solving the technical problem that the carbon fiber layer is easily damaged due to the weak compressive strength of the seam position of the adjacent carbon fiber plates 2 or the carbon fiber filament side walls when tightly wound. In this embodiment, the glue is epoxy resin, and when the glue is completely dry, the pressing plate 5 can be disassembled or retained.

[0101] S3: A fiber composite material cloth 6 is bonded and wrapped within a certain range between the starting end and the ending end of the wound carbon fiber plate for reinforcement, and a filling protective layer 3 is wrapped around the outer side of the wound carbon fiber plate 2 .

[0102] In this embodiment, the protective layer 3 is a filled ordinary foam barrier. By utilizing the large deformation property of foam, an isolation layer is formed between the outer frame and the carbon fiber plate reinforced pipe, so that the external load is mainly borne by the outer frame, protecting the carbon fiber pipe from the external load.

[0103] S4: Install an outer frame 8 outside the protective layer 3, wherein the outer frame 8 is a truss structure or a half structure.

[0104] As an embodiment of the present application, the outer frame 8 is a truss structure, and the outer frame 8 includes a plurality of circular trusses 81 fixedly installed at intervals, and support rods 82 for connecting the plurality of circular trusses 81, and the plurality of support rods 82 are arranged in a circular array along the axis of the circular trusses 81, and the circular trusses 81 include a coaxially arranged inner ring 811 and an outer ring 812, and the inner ring 811 and the outer ring 812 are connected by a plurality of connecting rods, and the plurality of inner rings 811 and the plurality of outer rings 812 are respectively connected by the support rods 82.

[0105] In this embodiment, when the outer frame 8 is installed, the ring trusses 81 are first sleeved on the outer side of the protective layer 3 in sequence, and a plurality of the ring trusses 81 are connected by support rods 82. When the connection assembly is a bolted connection assembly, the connection flanges 43 at both ends are connected to the two ends of the support rods 82 respectively.

[0106] As another embodiment of the present application, the outer frame 8 is a Hough structure, and the outer frame 8 includes two symmetrically arranged polygonal connecting plates 83;

[0107] The two polygonal connecting plates 83 are connected by a flange plate and bolts, and the two polygonal connecting plates are connected to form a polygonal tubular sleeve.

[0108] In this embodiment, when the outer frame 8 is installed, the two polygonal connecting plates 83 are buckled onto the outer side of the protective layer 3 and are fastened by bolts.

[0109] Embodiment 5:

[0110] like Fig.10 A prestressed carbon fiber plate winding reinforced pipe production device is shown, characterized in that it is used to implement the prestressed carbon fiber plate winding reinforced pipe production process mentioned in the claim, including a carbon fiber plate winding device;

[0111] The carbon fiber plate winding device comprises a carbon fiber plate reel 10 and a rotating lifting device 9, and the liner pipe 1 is installed on the rotating lifting device 9;

[0112] A guide wheel group 11, a tension stabilizing device 12, a steering device 13 and a glue coating box 14 are sequentially arranged between the carbon fiber plate reel 10 and the rotating lifting device 9. The carbon fiber plate 2 at the front end of the carbon fiber plate reel 10 is fixed to the winding starting end of the inner liner pipe after passing through the guide wheel group 11, the tension stabilizing device 12 and the steering device 13 in sequence.

[0113] In this embodiment, when the carbon fiber plate 2 is wound, the downward traction of the tension stabilizing device 12 and the rotation of the rotating lifting device 9 itself form a counter-tension, forming prestress on the carbon fiber plate 2 and bonding it to the inner lining tube 1 at the same time. The prestress of the carbon fiber plate 2 is preferably controlled to 5% to 60% of the standard value of the tensile strength.

[0114] In this embodiment, when the carbon fiber plate 2 is wound, the inner liner tube 1 is installed on the rotating lifting device 9, and the carbon fiber plate 2 at the front end of the carbon fiber plate reel 10 is pressed and locked on the inner liner tube 1 through the pressing plate 5. The carbon fiber plate reel 10 discharges at a uniform speed, and the rotating lifting device 9 drives the inner liner tube 1 to rotate and move up and down to achieve the winding of the carbon fiber plate 2. In this embodiment, the adhesive glue is evenly applied to the carbon fiber plate 2 through the glue box 14. The steering device 13 can realize the flipping of the carbon fiber plate 2 before entering the glue box 14, and adjust the carbon fiber plate 2 from a horizontal state to a vertical state.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A production process for prestressed carbon fiber plate winding reinforced pipe, characterized in that: The specific steps are: S1: Install the connection components at both ends of the liner pipe; S2: Winding a carbon fiber sheet on the liner tube; S3: The fiber composite material cloth is bonded and wound within the starting end and the ending end of the wound carbon fiber plate for reinforcement, and a filling protective layer is wrapped around the outer side of the wound carbon fiber plate.

2. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 1, characterized in that: The connection assembly is a socket-type connection assembly or a flange bolt-type connection assembly or a welding connection assembly.

3. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 1, characterized in that: The specific steps of winding the carbon fiber plate on the inner liner pipe in step S2 are: S2.1: Apply adhesive glue to the winding start end on the inner liner pipe, and press the starting end of the carbon fiber plate to the winding start end through a pressing plate; S2.2: After the carbon fiber plate is evenly coated with glue on the glue coating box, it is spirally wound along the length direction of the liner pipe from the winding starting end; S2.3: After the winding is completed, apply adhesive glue to the end of the winding, and press the end of the carbon fiber plate to the end of the winding by a pressing plate.

4. A process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 1 or 3, characterized in that: The inner liner pipe is any one of a ribless metal single-layer pipe, a ribbed metal single-layer pipe, a non-metallic single-layer pipe, a reinforced concrete single-layer pipe and a single steel cylinder concrete pipe.

5. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 3, characterized in that: The spiral winding angle is greater than 85° and less than 90°.

6. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 3, characterized in that: The winding method of the carbon fiber plate is any one of single-layer sparse winding, single-layer tight winding, multi-layer tight winding and plate-type stacked winding.

7. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 3, characterized in that: The inner liner pipe is a ribbed metal single-layer pipe, and step S1 also includes sequentially installing ribbed rings at intervals on the outer wall of the inner liner pipe.

8. The process for producing a prestressed carbon fiber plate-wrapped reinforced pipe according to claim 3, characterized in that: The method further comprises step S4: installing an outer frame on the outer side of the protective layer, wherein the outer frame is a truss structure or a half structure.

9. A prestressed carbon fiber plate winding reinforced pipe production device, characterized in that: A process for producing a prestressed carbon fiber plate-wound reinforced pipe according to any one of claims 1 to 8, comprising a carbon fiber plate-wound device; The carbon fiber plate winding device comprises a carbon fiber plate reel and a rotating lifting device, and the liner pipe is installed on the rotating lifting device; A guide wheel group, a tension stabilizing device, a steering device and a glue coating box are arranged in sequence between the carbon fiber plate reel and the rotating lifting device. The front end of the carbon fiber plate reel passes through the guide wheel group, the tension stabilizing device, the steering device and the glue coating box in sequence and is fixed to the winding starting end of the inner liner pipe.

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