A high-strength composite pipe material for marine use and its preparation method and device

Abstract

The present invention relates to the technical field of composite pipes, and particularly to a high-strength composite pipe material for marine use, and a preparation method and device thereof. Polyethylene, an initiator, and a catalyst are mixed and stirred at a stirring rate of 300 revolutions per minute for 2 hours to obtain a first product; at the same time, a portion of the first product is taken out and placed in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius for 3 hours to obtain a second product; the first product and the second product are sequentially placed in an extruder for melt grafting, and the second product is made into an inner lining layer; the wall thickness and outer diameter of multiple first products are respectively adjusted to the parameters of an isolation layer, an outer protective layer, and an anti-wear layer, and the isolation layer, the outer protective layer, and the anti-wear layer are extruded in sequence; a support tube is placed inside the inner lining layer to prevent it from being squeezed and deformed; and an adhesive is applied to a steel cord to thereby improve the strength of the composite pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of composite pipes, and in particular to a high-strength composite pipe material for marine use and a preparation method and device thereof. Background Art

[0002] Currently, composite pipes are widely used in the transportation of oil and natural gas. They have the advantages of high cost performance and corrosion resistance. However, after long-term use, the ceramic pieces installed inside traditional composite pipes are prone to fall off.

[0003] In the prior art, it includes: providing the inner tube formed by splicing ceramic sheets; and providing the outer tube tensioned on the outside of the inner tube. On the one hand, by using ceramic sheets to splice the inner tube, the size and quality of the ceramic sheets can be accurately controlled, and the inner tube can be conveniently made by splicing. On the other hand, by tensioning the outer tube on the outside of the inner tube, the outer tube can apply tensioning force to the inner tube to apply compressive stress to the ceramic sheets, thereby making the splicing of the ceramic sheets more firm and preventing the ceramic sheets from falling off.

[0004] However, in the aforementioned existing technologies, in the ocean, the beach oil fields have the characteristics of harsh operating environment, complex geological conditions, and large pollution area after oil pipeline leakage. The beach oil fields are mainly composed of subtidal zone, intertidal zone and supratidal zone. Its environmental characteristics are that the subtidal zone is below the sea level all year round, the intertidal zone is the sea at high tide and the wetland after low tide. The sea and land environment changes frequently, and the sea ice erosion is serious in winter. The supratidal zone is similar to the land environment. Therefore, the strength requirements of the composite pipe are relatively high. The strength of the traditional composite pipe is relatively low and cannot meet the requirements of the marine environment. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-strength composite pipe material for marine use and a preparation method and device thereof, so as to solve the problems in the prior art that offshore oil fields have harsh operating environments, complex geological conditions, and large pollution areas after oil pipeline leakage. The offshore oil fields are mainly composed of subtidal zones, intertidal zones, and supratidal zones. Their environmental characteristics are that the subtidal zone is below the sea level all year round, the intertidal zone is the sea at high tide and the wetland after low tide, the sea and land environments change frequently, and sea ice erosion is serious in winter. The supratidal zone is similar to the land environment. Therefore, the strength requirements for composite pipes are high, while traditional composite pipes have low strength and cannot meet the problems of marine environment.

[0006] To achieve the above object, the present invention provides a method for preparing a high-strength composite pipe material for marine use, comprising the following steps:

[0007] The polyethylene, initiator and catalyst were mixed and stirred at a stirring rate of 300 rpm for 2 hours to obtain a first product;

[0008] At the same time, a portion of the first product was taken out and placed in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius for 3 hours to obtain a second product;

[0009] The first product and the second product are sequentially placed in an extruder for melt grafting, the second product is made into an inner lining layer, the wall thickness and outer diameter of the plurality of first products are adjusted to the parameters of the isolation layer, the outer protective layer and the anti-wear layer, respectively, and sequentially extruded to form the isolation layer, the outer protective layer and the anti-wear layer;

[0010] Place a support tube inside the lining layer to prevent it from being squeezed and deformed;

[0011] Apply adhesive to the steel cord, then rotate the inner liner to bond the steel cord to the outside of the inner liner to form a reinforcement layer;

[0012] Then, the adhesive is applied to the isolation layer, the anti-stretching layer, the outer protective layer and the anti-wear layer in sequence;

[0013] Bonding the insulation layer to the outside of the steel cord;

[0014] The composite pipe is then continuously rotated to wrap a reinforcing rubber strip around the outside of the isolation layer, while the armor layer is bonded on top. Multiple bumps are provided on the armor layer to fit into the grooves of the isolation layer to form a stable installation.

[0015] Then, the anti-stretching layer, the outer protective layer and the anti-wear layer are bonded in sequence;

[0016] After all bonding is completed, multiple pressing blocks are used to press the outside of the composite pipe to make it fit perfectly and reduce gaps;

[0017] Finally, determine the required size of the composite pipe and use the cutting device to cut the composite pipe;

[0018] Apply protective film and package for transportation.

[0019] The inner lining layer has a wall thickness of not less than 6 mm, an outer diameter of 93 mm, and is made of cross-linked polyethylene with a density of 0.94 g / cm³.

[0020] The reinforcement layer has a wall thickness of 3.6 mm and an outer diameter of 100.2 mm. The material is steel cord with a density of 8.6 g / cm³.

[0021] The isolation layer has a wall thickness of 2 mm and an outer diameter of 104.2 mm, and is made of polyethylene with a density of 6 g / cm³;

[0022] The armor layer has a wall thickness of 4 mm and an outer diameter of 108.2 mm. The material is heat-treated carbon steel. The tensile strength of the heat-treated carbon steel is not less than 690 MPa and the density is 8 g / cm³.

[0023] The anti-tensile layer has a wall thickness of 1.8 mm, an outer diameter of 112.2 mm, a tensile force of not less than 20 T, and a density of 8.6 g / cm³;

[0024] The outer protective layer has a wall thickness of 4 mm and an outer diameter of 120.2 mm, and is made of polyethylene with a density of 0.93 g / cm³;

[0025] The anti-wear layer has a wall thickness of 2mm and an outer diameter of 124.2mm, and is made of polyethylene. The surface is sprayed with an anti-ultraviolet agent with a concentration of 0.93g / cm;

[0026] In the step of mixing polyethylene, an initiator and a catalyst and stirring at a stirring rate of 300 rpm for 2 hours to obtain a first product:

[0027] The ratio of polyethylene, initiator and catalyst is 100:1:1;

[0028] The initiator is ammonium persulfate and the catalyst is ZN catalyst;

[0029] The extruder model is SJ-65 / 33 single screw extruder;

[0030] Parameters of the first product of the extruded isolation layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 104.5 mm, die temperature: 200°C, extrusion temperature: 200°C;

[0031] Parameters of the first product for extruding the outer protective layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, mold wall thickness: 4 mm, mold inner diameter: 120.5 mm, mold temperature: 200°C, extrusion temperature: 200°C;

[0032] Parameters of the first product of extruding the anti-wear layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 124.5 mm, die temperature: 200° C., extrusion temperature: 200° C.

[0033] The present invention also provides a device for preparing high-strength composite pipe materials for marine use, which adopts the above-mentioned method for preparing high-strength composite pipe materials for marine use, including a base, an electric slide rail, a slider, a pressing unit, a motor, a threaded rod, a movable plate, a support tube, a plurality of anti-slide blocks and a supporting unit, wherein the electric slide rail is arranged on the inner top wall of the base, the slider is interactively connected to the electric slide rail, the pressing unit is arranged below the slider, the motor is fixedly connected to the base and is located on one side of the base, the base has a slide groove, one end of the threaded rod is fixedly connected to the output end of the motor, the other end of the threaded rod passes through the base and is rotatably connected to the inner side wall of the slide groove, the movable plate has a threaded hole, the threaded hole and the threaded rod are mutually adapted, the support tube is rotatably connected to the movable plate and is located on one side of the movable plate, a composite pipe is sleeved on the support tube, a plurality of anti-slide blocks are fixedly connected to the support tube and are sequentially distributed between the support tube and the composite pipe, and the supporting unit is arranged on the base.

[0034] The pressing unit includes a first cylinder and a pressing block. The first cylinder is fixedly connected to the slider and is located below the slider. The output end of the first cylinder is fixedly connected to the pressing block. The pressing block and the composite tube are adapted to each other.

[0035] In which, the supporting unit includes a second cylinder, a third cylinder, a connecting plate and a supporting ring, the second cylinder is fixedly connected to the base and is located on the inner top wall of the base, the output end of the second cylinder is fixedly connected to the third cylinder, the output end of the third cylinder is fixedly connected to the connecting plate, the supporting ring is fixedly connected to the connecting plate and is located below the connecting plate, and the supporting ring is located on the side of the composite tube away from the movable plate.

[0036] The present invention also provides a high-strength composite pipe material for marine use, which adopts the above-mentioned method for preparing the high-strength composite pipe material for marine use, including an inner lining layer, a reinforcement layer, an isolation layer, an armor layer, an anti-tensile layer, an outer protective layer, an anti-wear layer, a reinforcing rubber strip and a plurality of protrusions, the isolation layer has a plurality of grooves, the reinforcement layer is arranged on the outside of the inner lining layer, the isolation layer is arranged on the outside of the reinforcement layer, the reinforcing rubber strip is wrapped around the outside of the isolation layer, a plurality of the protrusions are sequentially arranged on the inside of the armor layer, and the plurality of the protrusions are respectively adapted to the corresponding grooves, the anti-tensile layer is arranged on the outside of the armor layer, the outer protective layer is arranged on the outside of the anti-tensile layer, and the anti-wear layer is arranged on the outside of the outer protective layer.

[0037] The present invention provides a high-strength composite pipe material for marine use and a preparation method and device thereof. The method comprises the following steps: mixing polyethylene, an initiator and a catalyst at a stirring rate of 300 rpm for 2 hours to obtain a first product; taking out a portion of the first product at the same time, placing it in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius, and cross-linking for 3 hours to obtain a second product; placing the first product and the second product in an extruder in turn for melt grafting, and making the second product into an inner lining layer; adjusting the wall thickness and outer diameter of the plurality of first products to the parameters of the isolation layer, outer protective layer and anti-wear layer, respectively, and extruding them in turn to form an isolation layer, outer protective layer and anti-wear layer; placing a support cylinder inside the inner lining layer to prevent it from being squeezed and deformed; applying adhesive on the steel cord, and then rotating the inner lining layer to bond the steel cord to the outside of the inner lining layer to form a reinforcement layer; then the isolation layer, the tensile strength layer, Adhesive is applied to the outer protective layer and the anti-wear layer in turn; the isolation layer is bonded to the outside of the steel cord; then the composite pipe is continuously rotated, a reinforcing rubber strip is wrapped around the outside of the isolation layer, and the armor layer is bonded at the same time. The armor layer is provided with a plurality of protrusions that cooperate with the grooves of the isolation layer to form a stable installation; then the tensile strength layer, the outer protective layer and the anti-wear layer are bonded in turn; after all the bonding is completed, the outside of the composite pipe is pressed by a plurality of pressing blocks to make it fit perfectly and reduce gaps; finally, the required size of the composite pipe is determined, and the composite pipe is cut using a cutting device; a protective film is applied, and the pipe is packaged and transported. Thus, the heat-treated carbon steel of the armor layer and the steel cord of the reinforcement layer can improve the strength of the composite pipe, and the tensile strength layer can withstand a tensile force of 20T. The outer protective layer and the anti-wear layer protect the outside of the composite pipe, thereby meeting the use in the marine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0039] Figure 1 It is a structural schematic diagram of a device for preparing high-strength composite pipe materials for ocean use according to the present invention.

[0040] Figure 2 It is a cross-sectional view of the device for preparing high-strength composite pipe materials for ocean use according to the present invention.

[0041] Figure 3 The present invention Figure 2 AA line section view.

[0042] Figure 4 It is a cross-sectional view of the high-strength composite pipe material for marine use according to the present invention.

[0043] Figure 5 It is a schematic structural diagram of the high-strength composite pipe material for ocean use of the present invention.

[0044] Figure 6 The present invention is a flow chart of the steps of the method for preparing a high-strength composite pipe material for ocean use.

[0045] 101-base, 102-electric slide rail, 103-slider, 104-motor, 105-threaded rod, 106-movable plate, 107-support cylinder, 108-anti-slider, 109-slide groove, 110-threaded hole, 111-composite tube, 112-first cylinder, 113-pressing block, 114-second cylinder, 115-third cylinder, 116-connecting plate, 117-holding ring, 201-inner lining, 202-reinforcement layer, 203-isolation layer, 204-armor layer, 205-tensile strength layer, 206-outer protective layer, 207-anti-wear layer, 208-reinforced rubber strip, 209-bump, 210-groove. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0047] See also Figure 6 The present invention provides a method for preparing a high-strength composite pipe material for marine use, comprising the following steps:

[0048] S1: mixing polyethylene, an initiator, and a catalyst with stirring at a rate of 300 rpm for 2 hours to obtain a first product;

[0049] S2: At the same time, a portion of the first product is taken out and placed in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius for 3 hours to obtain a second product;

[0050] S3: The first product and the second product are sequentially placed in an extruder for melt grafting. The second product is made into the inner lining layer 201. The wall thickness and outer diameter of the plurality of first products are adjusted to the parameters of the isolation layer, outer protective layer and anti-wear layer, respectively. The isolation layer 203, outer protective layer 206 and anti-wear layer 207 are sequentially extruded.

[0051] S4: Place the support tube 107 inside the inner lining layer 201 to prevent it from being squeezed and deformed;

[0052] S5: Apply adhesive to the steel cord, then rotate the inner liner 201 to bond the steel cord to the outside of the inner liner 201 to form a reinforcement layer 202;

[0053] S6: Then, adhesive is applied to the isolation layer 203, the anti-stretching layer 205, the outer protective layer 206 and the anti-wear layer 207 in sequence;

[0054] S7: bonding the isolation layer 203 to the outside of the steel cord;

[0055] S8: The composite tube 111 is then continuously rotated to wrap a reinforcing rubber strip 208 around the outside of the isolation layer 203 and bond the armor layer 204. The armor layer 204 is provided with a plurality of protrusions 209 that cooperate with the grooves 210 of the isolation layer 203 to form a stable installation.

[0056] S9: Then, the anti-stretching layer 205, the outer protective layer 206 and the anti-wear layer 207 are bonded in sequence;

[0057] S10: After all bonding is completed, multiple pressing blocks 113 are used to press the outside of the composite tube 111 to make it fit perfectly and reduce gaps;

[0058] S11: Finally, the required size of the composite tube 111 is determined, and the composite tube 111 is cut using a cutting device;

[0059] S12: Apply protective film and package for transportation.

[0060] When using a method for preparing a high-strength composite pipe material for marine use according to the present embodiment, polyethylene, an initiator and a catalyst are mixed and stirred at a stirring rate of 300 rpm for 2 hours to obtain a first product; at the same time, a portion of the first product is taken out and placed in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius for 3 hours to obtain a second product; the first product and the second product are sequentially placed in an extruder for melt grafting, and the second product is made into an inner lining layer 201, and the wall thickness and outer diameter of the plurality of first products are respectively adjusted to the parameters of the isolation layer, the outer protective layer and the anti-wear layer, and extruded in sequence to form an isolation layer 203, an outer protective layer 206 and an anti-wear layer 207; a support cylinder 107 is placed inside the inner lining layer 201 to prevent it from being squeezed and deformed; an adhesive is applied to the steel cord, and then the inner lining layer 201 is rotated to bond the steel cord to the inner lining The outside of the layer 201 is formed with a reinforcement layer 202; then the isolation layer 203, the tensile strength layer 205, the outer protective layer 206 and the anti-wear layer 207 are coated with adhesive in turn; the isolation layer 203 is bonded to the outside of the steel cord; then the composite tube 111 is continuously rotated, and the reinforcing rubber strip 208 is wound around the outside of the isolation layer 203, and the armor layer 204 is bonded at the same time. The armor layer 204 is provided with a plurality of protrusions 209 which cooperate with the grooves 210 of the isolation layer 203 to form a stable installation; then the tensile strength layer 205, the outer protective layer 206 and the anti-wear layer 207 are bonded in turn; after all the bonding is completed, the outside of the composite tube 111 is pressed by a plurality of pressing blocks 113 to make it fit perfectly and reduce gaps; finally, the required size of the composite tube 111 is determined, and the composite tube 111 is cut using a cutting device; a protective film is applied, and the tube is packaged and transported.

[0061] The elastic modulus of the composite pipe 111 is 2.1×10ˆ5 (MPa), the Poisson's ratio of the composite pipe 111 is 0.27, the force-deformation relationship of the composite pipe 111 is 5%, the tensile strength of the composite pipe 111 is 20T, the thermal expansion coefficient of the composite pipe 111 is 12×10-6 / ℃, the thermal conductivity of the composite pipe 111 is 0.4W / (m·K), the ultimate pressure of the composite pipe 111 is 36MPa, the compressive strength of the composite pipe 111 is 24MPa, the bending strength of the composite pipe 111 is 300MPa, the shear limit load of the composite pipe 111 is 550MPa (steel) and 15MPa polyethylene, the strength of the composite pipe 111 is 12MPa, and the impact strength of the composite pipe 111 is 543J / m.

[0062] The test environment requirements for the composite pipe 111 are as follows: the environmental conditions for the tidal sea environment mechanical parameter test of the flexible composite pipe 111 are: the average wave height is 3.02m, the wave period is 13.66s; the ocean current velocity range is 20cm / s to 105cm / s; the sea ice level is normal ice year, and the ice thickness is 20cm to 30cm; the average formation settlement velocity is 26.7mm / a; the pipeline operating pressure is 0MPa to 4.0MPa; the pipeline temperature range is 20℃ to 80℃;

[0063] In the step of mixing polyethylene, an initiator and a catalyst and stirring at a stirring rate of 300 rpm for 2 hours to obtain a first product, the initiator is ammonium persulfate, the catalyst is a ZN catalyst, and the extruder model is a SJ-65 / 33 single-screw extruder;

[0064] Parameters of the first product of the extruded isolation layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 104.5 mm, die temperature: 200°C, extrusion temperature: 200°C;

[0065] Parameters of the first product for extruding the outer protective layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, mold wall thickness: 4 mm, mold inner diameter: 120.5 mm, mold temperature: 200°C, extrusion temperature: 200°C;

[0066] Parameters of the first product of extruding the anti-wear layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 124.5 mm, die temperature: 200° C., extrusion temperature: 200° C.

[0067] See also Figures 1 to 3The present invention also provides a device for preparing high-strength composite pipe materials for marine use, which adopts the above-mentioned method for preparing high-strength composite pipe materials for marine use, including a base 101, an electric slide rail 102, a slider 103, a pressing unit, a motor 104, a threaded rod 105, a movable plate 106, a support cylinder 107, a plurality of anti-slide blocks 108 and a supporting unit, wherein the electric slide rail 102 is arranged on the inner top wall of the base 101, the slider 103 is interactively connected with the electric slide rail 102, the pressing unit is arranged below the slider 103, the motor 104 is fixedly connected to the base 101 and is located on one side of the base 101, and the base 101 has a slide groove 109. One end of the threaded rod 105 is fixedly connected to the output end of the motor 104, and the other end of the threaded rod 105 passes through the base 101 and is rotatably connected to the inner wall of the slide groove 109. The movable plate 106 has a threaded hole 110, and the threaded hole 110 is adapted to the threaded rod 105. The support tube 107 is rotatably connected to the movable plate 106 and is located on one side of the movable plate 106. A composite tube 111 is sleeved on the support tube 107. Multiple anti-slip blocks 108 are fixedly connected to the support tube 107 and are distributed in sequence between the support tube 107 and the composite tube 111. The supporting unit is arranged on the base 101.

[0068] In this embodiment, the base 101 supports the entire preparation device. First, the composite tube 111 is sleeved on the outside of the support tube 107, and the supporting unit then supports the composite tube 111 on the movable plate 106. The pressing unit is started to press the composite tube 111. After the pressing is completed, the supporting is cancelled. At the same time, the staff can rotate the support tube 107, rotate the angle of the composite tube 111, and then press it again to make the layers of the composite tube 111 fit tightly together. The motor 104 is started to drive the threaded rod 105 to rotate, cooperate with the threaded hole 110, and drive the movable plate 106 to move. The position of the composite tube 111 can be adjusted to facilitate the pressing unit to press different positions. The anti-sliding block 108 can prevent the composite tube 111 from slipping.

[0069] Furthermore, the pressing unit includes a first cylinder 112 and a pressing block 113. The first cylinder 112 is fixedly connected to the slider 103 and is located below the slider 103. The output end of the first cylinder 112 is fixedly connected to the pressing block 113. The pressing block 113 and the composite tube 111 are adapted to each other.

[0070] In this embodiment, the first cylinder 112 is activated to drive the pressing block 113 to move downward to press the composite tube 111 .

[0071] Furthermore, the supporting unit includes a second cylinder 114, a third cylinder 115, a connecting plate 116 and a supporting ring 117. The second cylinder 114 is fixedly connected to the base 101 and is located on the inner top wall of the base 101. The output end of the second cylinder 114 is fixedly connected to the third cylinder 115. The output end of the third cylinder 115 is fixedly connected to the connecting plate 116. The supporting ring 117 is fixedly connected to the connecting plate 116 and is located below the connecting plate 116. The supporting ring 117 is located on the side of the composite tube 111 away from the movable plate 106.

[0072] In this embodiment, the second cylinder 114 is started, driving the third cylinder 115 and the supporting ring 117 to adjust the height. The third cylinder 115 is started, and through the connection of the connecting plate 116, it drives the supporting ring 117 to move into the outside of the support tube 107, thereby supporting the composite tube 111.

[0073] When using the method for preparing a high-strength composite pipe material for marine use of the present embodiment, the composite pipe 111 is first sleeved on the outside of the support tube 107, the second cylinder 114 is started, driving the third cylinder 115 and the supporting ring 117 to adjust the height, the third cylinder 115 is started, and through the connection of the connecting plate 116, drives the supporting ring 117 to move into the outside of the support tube 107, thereby supporting the composite pipe 111, the first cylinder 112 is started, driving the pressing block 113 to move downward, pressing the composite pipe 111, and canceling the pressing after the pressing is completed. At the same time, the staff can rotate the support cylinder 107, rotate the angle of the composite tube 111, and then press it again to make the layers of the composite tube 111 fit tightly together. The motor 104 is started to drive the threaded rod 105 to rotate, cooperate with the threaded hole 110, and drive the movable plate 106 to move. The position of the composite tube 111 can be adjusted to facilitate the pressing unit to press different positions. The anti-slider 108 can prevent the composite tube 111 from slipping, thereby rotating and pressing the composite tube 111 to make the layers fit tightly together and improve the preparation quality.

[0074] See also Figure 4 and Figure 5The present invention also provides a high-strength composite pipe material for marine use, comprising an inner lining layer 201, a reinforcement layer 202, an isolation layer 203, an armor layer 204, an anti-tensile layer 205, an outer protective layer 206, an anti-wear layer 207, a reinforcing rubber strip 208 and a plurality of protrusions 209, wherein the isolation layer 203 has a plurality of grooves 210, the reinforcement layer 202 is arranged on the outside of the inner lining layer 201, the isolation layer 203 is arranged on the outside of the reinforcement layer 202, the reinforcing rubber strip 208 is wound on the outside of the isolation layer 203, a plurality of the protrusions 209 are sequentially arranged on the inside of the armor layer 204, and the plurality of the protrusions 209 are respectively adapted to the corresponding grooves 210, the anti-tensile layer 205 is arranged on the outside of the armor layer 204, the outer protective layer 206 is arranged on the outside of the anti-tensile layer 205, and the anti-wear layer 207 is arranged on the outside of the outer protective layer 206.

[0075] Among them, the inner lining layer 201 is at the innermost part of the composite pipe 111 and is used for transporting the medium. The reinforcement layer 202 can strengthen the inner lining layer 201 to prevent it from being easily deformed and cracked. The isolation layer 203 separates the reinforcement layer 202 and the armor layer 204, provides certain protection for the inner lining layer 201, and facilitates the installation of the armor layer 204. The armor layer 204 can greatly improve the tensile strength of the composite pipe 111. When installing the armor layer 204, first wrap and install the reinforcing rubber strip 208, and then align the protrusion 209 with the groove 210, thereby improving the stability of the armor layer 204. With the help of adhesive, the heat-treated carbon steel can achieve a stable installation effect. The anti-tensile layer 205 can also provide a tensile force of 20T. The outer protective layer 206 and the wear layer protect the outside of the entire composite pipe 111 to avoid wear and improve the service life.

[0076] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A device for preparing high-strength composite pipe materials for marine use, characterized in that: The cam is mounted on a drive link receptacle, wherein the cam is mounted on a drive link receptacle and the drive link is located on a side of the cam frame, wherein the cam frame is located on a track and is adapted to track the movement of the cam frame. The pressing unit includes a first cylinder and a pressing block, wherein the first cylinder is fixedly connected to the slider and is located below the slider, and an output end of the first cylinder is fixedly connected to the pressing block, and the pressing block and the composite tube are adapted to each other; The abutting unit includes a second cylinder, a third cylinder, a connecting plate, and an abutting ring. The second cylinder is fixedly connected to the base and is located on the inner top wall of the base. The output end of the second cylinder is fixedly connected to the third cylinder. The output end of the third cylinder is fixedly connected to the connecting plate. The abutting ring is fixedly connected to the connecting plate and is located below the connecting plate. The abutting ring is located on the side of the composite pipe away from the movable plate. The method for preparing the high-strength composite pipe material for marine use comprises the following steps: The polyethylene, initiator and catalyst were mixed and stirred at a stirring rate of 300 rpm for 2 hours to obtain a first product; At the same time, a portion of the first product was taken out and placed in a heating furnace for cross-linking treatment at a heating temperature of 200 degrees Celsius for 3 hours to obtain a second product; The first product and the second product are sequentially placed in an extruder for melt grafting and extrusion, and the second product is made into an inner lining layer. The wall thickness and outer diameter of the plurality of first products are adjusted to the parameters of the isolation layer, the outer protective layer and the anti-wear layer, respectively, and sequentially extruded to form the isolation layer, the outer protective layer and the anti-wear layer; Place a support tube inside the lining layer to prevent it from being squeezed and deformed; Apply adhesive to the steel cord, then rotate the inner liner to bond the steel cord to the outside of the inner liner to form a reinforcement layer; Then, the adhesive is applied to the isolation layer, the anti-stretching layer, the outer protective layer and the anti-wear layer in sequence; Bonding the insulation layer to the outside of the steel cord; The composite pipe is then continuously rotated to wrap a reinforcing rubber strip around the outside of the isolation layer, while the armor layer is bonded on top. Multiple bumps are provided on the armor layer to fit into the grooves of the isolation layer to form a stable installation. Then, the anti-stretching layer, the outer protective layer and the anti-wear layer are bonded in sequence; After all bonding is completed, multiple pressing blocks are used to press the outside of the composite pipe to make it fit perfectly and reduce gaps; Finally, determine the required size of the composite pipe and use the cutting device to cut the composite pipe; Apply protective film and package for transportation; The inner lining layer has a wall thickness of not less than 6 mm, an outer diameter of 93 mm, and is made of cross-linked polyethylene with a density of 0.94 g / cm³. The reinforcement layer has a wall thickness of 3.6 mm and an outer diameter of 100.2 mm, and is made of steel cord with a density of 8.6 g / cm³; The isolation layer has a wall thickness of 2 mm and an outer diameter of 104.2 mm; The armor layer has a wall thickness of 4 mm and an outer diameter of 108.2 mm. The material is heat-treated carbon steel. The tensile strength of the heat-treated carbon steel is not less than 690 MPa and the density is 8 g / cm³. The anti-tensile layer has a wall thickness of 1.8 mm, an outer diameter of 112.2 mm, a tensile force of not less than 20 T, and a density of 8.6 g / cm³; The outer protective layer has a wall thickness of 4 mm and an outer diameter of 120.2 mm, and is made of polyethylene with a density of 0.93 g / cm³; The anti-wear layer has a wall thickness of 2mm and an outer diameter of 124.2mm, and is sprayed with an anti-ultraviolet agent on the surface; In the step of mixing polyethylene, an initiator and a catalyst and stirring at a stirring rate of 300 rpm for 2 hours to obtain a first product: The ratio of polyethylene, initiator and catalyst is 100:1:1; The initiator is ammonium persulfate and the catalyst is ZN catalyst; The extruder model is SJ-65 / 33 single screw extruder; Parameters of the first product of the extruded isolation layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 104.5 mm, die temperature: 200°C, extrusion temperature: 200°C; Parameters of the first product for extruding the outer protective layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, mold wall thickness: 4 mm, mold inner diameter: 120.5 mm, mold temperature: 200°C, extrusion temperature: 200°C; Parameters of the first product of extruding the anti-wear layer: screw diameter: 65 mm, screw aspect ratio: 33:1, screw speed: 200 rpm, die wall thickness: 2 mm, die inner diameter: 124.5 mm, die temperature: 200° C., extrusion temperature: 200° C.

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