JP7388630B2 - Reinforced resin pipe, method for manufacturing reinforced resin pipe, Magnus type thrust generator, wind power generator, hydraulic power generator, and tidal power generator - Google Patents

Description

The present invention provides a reinforced resin pipe, a method for manufacturing the reinforced resin pipe, a Magnus type thrust generator equipped with the reinforced resin pipe as a cylindrical blade, a wind power generator, a hydraulic power generator using the Magnus type thrust generator, and related to tidal power generators.

In recent years, reinforced resin pipes have been in demand for use in large-diameter fluid transport pipes with diameters exceeding several meters, such as sewer pipes, and structures such as buildings and wind turbines, as they are lightweight and easy to construct. It has increased.

For example, Patent Document 1 discloses a reinforced plastic tube formed into a tubular shape by winding a woven fabric containing reinforcing fibers in a helical shape so that the direction of the reinforcing fibers is parallel to the axial direction of the tube. has been done. In this reinforced plastic tube, since the reinforcing fibers are arranged parallel to the axial direction of the tube, the tensile strength in the axial direction of the tube can be improved.

Japanese Patent Application Publication No. 2007-136997

However, since the reinforced plastic tube disclosed in Patent Document 1 is a thin-walled tube, it is susceptible to buckling deformation when subjected to a bending load or a compressive load in the axial direction of the tube.

As a method for preventing buckling deformation, it is known to employ a sandwich structure in which a lightweight core material is inserted between an inner layer and an outer layer of fiber-reinforced resin. Therefore, it is conceivable to adopt a sandwich structure to the reinforced plastic tube disclosed in Patent Document 1. In this case, when manufacturing a reinforced plastic tube, for example, if the core material is wound helically, the core material undergoes bending deformation and cannot exhibit its original compressive strength. Furthermore, the core material that can be used to manufacture reinforced plastic tubes is limited to those thin enough to be wound helically, making it difficult to ensure sufficient strength.

The present invention has been made in view of the above circumstances, and provides a reinforced resin tube that is easy to manufacture and can improve strength against buckling deformation, a method for manufacturing the reinforced resin tube, and a cylindrical blade. It is an object of the present invention to provide a Magnus-type thrust generator including the reinforced resin pipe, and a wind power generator, a hydraulic power generator, and a tidal power generator using the Magnus-type thrust generator.

The present invention solves the above problems, and a reinforced resin pipe according to an embodiment of the present invention has
an inner layer made of a first fiber-reinforced resin formed into a tubular shape;
a plurality of core materials each formed in the shape of a tile and arranged side by side along the outer peripheral surface of the inner layer;
and an outer layer made of a second fiber-reinforced resin formed so as to cover the plurality of core materials.

In addition, in the above reinforced resin pipe,
The plurality of core materials are
The tubes are characterized in that they are arranged in a staggered manner in the circumferential direction of the tube.

In addition, in the above reinforced resin pipe,
Each of the plurality of core materials is
a concave curved surface that follows the outer peripheral surface of the inner layer;
It is characterized by having a convex curved surface that follows the inner circumferential surface of the outer layer.

In addition, in the above reinforced resin pipe,
Each of the plurality of core materials is
It is characterized in that it is made of an anisotropic material whose stiffness varies depending on the direction, and is arranged so that the stiffness in a direction that coincides with the radial direction of the tube is higher than the stiffness in other directions.

In addition, in the above reinforced resin pipe,
Each of the plurality of core materials is
The pipe is characterized in that it includes a honeycomb-shaped wall portion that forms a cavity that penetrates the tube in the radial direction.

Furthermore, the method for manufacturing a reinforced resin pipe according to an embodiment of the present invention includes:
an inner layer forming step of forming an inner layer by helically winding a first reinforcing fiber around the outer peripheral surface of the core material and impregnating the first reinforcing fiber with a first resin;
a core material arrangement step of arranging a plurality of core materials, each formed in a tile shape, side by side along the outer peripheral surface of the inner layer;
an outer layer forming step of forming an outer layer by winding a second reinforcing fiber in a helical shape so as to cover the plurality of core materials, and impregnating the second reinforcing fiber with a second resin;
The method is characterized by including a molding step of curing or solidifying the first resin and the second resin.

Furthermore, in the method for manufacturing the reinforced resin pipe,
The core material placement step includes:
The present invention is characterized in that the plurality of core materials are arranged side by side by sequentially sending out tape members to which the plurality of core materials are temporarily fixed to the outer peripheral surface of the inner layer.

Furthermore, the Magnus type thrust generator according to an embodiment of the present invention includes:
It is characterized in that the reinforced resin tube described above is provided as a cylindrical blade that generates a Magnus force by rotating in a fluid.

Further, a wind power generator, a hydraulic power generator, or a tidal power generator according to an embodiment of the present invention is characterized in that the Magnus-type thrust generator described above is used.

According to the reinforced resin pipe according to one embodiment of the present invention, a plurality of core materials formed in a tile shape are arranged in line along the outer peripheral surface of the inner layer as the core layer between the inner layer and the outer layer. Ru. Therefore, a plurality of core materials having a predetermined thickness are arranged between the inner layer and the outer layer without undergoing bending deformation to realize a sandwich structure, thereby improving the strength against buckling deformation. . Moreover, since the core layer is formed by arranging a plurality of core materials in line along the outer peripheral surface of the inner layer, the reinforced resin pipe can be easily manufactured.

FIG. 1 is a front view showing a reinforced resin pipe 1A according to a first embodiment of the present invention. 1 is a cross-sectional view taken along line AA, showing a reinforced resin pipe 1A according to a first embodiment of the present invention. A core material 30A according to a first embodiment of the present invention is shown, with (a) being a perspective view and (b) being a side view. It is a figure which shows the manufacturing method of 1 A of reinforced resin pipes based on the 1st Embodiment of this invention. FIG. 2 is a front view showing a reinforced resin pipe 1B according to a second embodiment of the present invention. A core material 30B according to a second embodiment of the present invention is shown, with (a) being a perspective view and (b) being a side view. FIG. 3 is a perspective view showing a vertical axis Magnus type wind power generator 10 according to a third embodiment of the present invention. FIG. 3 is a front view showing a schematic configuration of a vertical axis Magnus type wind power generator 10 according to a third embodiment of the present invention.

Specific embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a front view showing a reinforced resin pipe 1A according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA, showing the reinforced resin pipe 1A according to the first embodiment of the present invention. FIG. 3 shows a core material 30A according to the first embodiment of the present invention, in which (a) is a perspective view and (b) is a side view.

The reinforced resin tube 1A is a fiber reinforced resin tube having a sandwich structure in which a core layer 3 is disposed between an inner layer 2 and an outer layer 4. The reinforced resin pipe 1A is used, for example, as a large-diameter fluid transport pipe with a diameter exceeding several meters, such as a sewer pipe, or as a structure such as a building, a tunnel, a bridge, or a windmill.

The inner layer 2 is made of a first fiber-reinforced resin and is formed into a tubular shape. The first fiber-reinforced resin is obtained by curing or solidifying the first resin impregnated into the first reinforcing fibers.

The core layer 3 consists of a plurality of core materials 30A. Each of the plurality of core materials 30A is formed in a tile shape, and by arranging the plurality of core materials 30A along the outer peripheral surface of the inner layer 2 according to a predetermined layout pattern, the core layer 3 form.

As shown in FIG. 3, the core material 30A is a plate-shaped member that has external dimensions of length L, width W, and thickness T, and is gently curved as a whole. The core material 30A includes a concave curved surface 300 that follows the outer peripheral surface of the inner layer 2, a convex curved surface 301 that follows the inner peripheral surface of the outer layer 4, and a first side surface 302 that is arranged in the axial direction D1 of the reinforced resin pipe 1A. It has a second side surface 303 arranged in the circumferential direction D2 of the reinforced resin pipe 1A. The thickness T of the core material 30A corresponds to the thickness of the core layer 3.

In order to prevent a gap from forming between the concave curved surface 300 and the inner layer 2 when the core materials 30A are arranged side by side along the outer circumferential surface of the inner layer 2, the curvature of the concave curved surface 300 is equal to that of the inner layer 2. It is set according to the curvature of the outer peripheral surface of. Further, in order to prevent a gap from occurring between the convex curved surface 301 and the outer layer 4, the curvature of the convex curved surface 301 is set to match the curvature of the inner circumferential surface of the outer layer 4.

As the material of the core material 30A, an anisotropic material or an isotropic material is used. As the anisotropic material, for example, wood such as balsa wood is used. As the isotropic material, for example, a foam such as polyurethane is used.

The anisotropic material is a material whose rigidity differs depending on the direction, and the rigidity in the direction that coincides with the radial direction D3 of the reinforced resin pipe 1A is higher than the rigidity in other directions (axial direction D1 and circumferential direction D2). Placed. For example, when balsa wood is used as the anisotropic material, the wood fibers contained in the balsa wood function as reinforcing fibers, so that the stiffness in the reinforcing fiber direction 304 along the wood fibers becomes high. Therefore, the reinforcing fiber direction 304 of the balsa wood is oriented in the radial direction D3 of the reinforced resin pipe 1A, as shown in FIG. 3(b), and the concave curved surface 300 and the convex curved surface 301 become end surfaces. Therefore, the core material 30A is arranged so that the stress strain characteristics are high in the radial direction D3 of the reinforced resin tube 1A.

The plurality of core materials 30A are arranged in a staggered manner in the circumferential direction D2 of the reinforced resin pipe 1A, as shown in FIG. 1 as an example of a layout pattern. This is called a broken joint in the tile layout method, and when the joints are between the side surfaces of the adjacent core materials 30A, the joints 31 in the axial direction D1 that exist between the second side surfaces 303 are Although continuous, the joints 32 in the circumferential direction D2 existing between the first side surfaces 302 are arranged so as not to be continuous.

Note that the core material 30A may be a non-curved planar plate if the width W is sufficiently small relative to the diameter of the reinforced resin tube 1A. Further, the core material 30A may be arranged without gaps when arranged along the outer circumferential surface of the inner layer 2, the shape of the core material 30A may be changed as appropriate, and the layout of the core material 30A may be The pattern may be changed as appropriate. When changing the shape of the core material 30A, materials with different shapes may be combined. Examples of the layout pattern of the core material 30A include, in addition to the above-mentioned broken joints, through joints, quarter joints, wickerwork, and the like.

The outer layer 4 is made of a second fiber-reinforced resin and is formed to cover the plurality of core materials 30A. The second fiber-reinforced resin is obtained by curing or solidifying a second resin impregnated into second reinforcing fibers. Note that the outer circumferential surface of the outer layer 4 may be provided with patterns such as unevenness, lines, protrusions, etc., or may be subjected to surface treatment to prevent deterioration and damage.

As the first reinforcing fibers and the second reinforcing fibers, for example, carbon fibers, glass fibers, synthetic resin fibers, metal fibers, etc. are used. The first reinforcing fibers and the second reinforcing fibers are oriented in one or more arbitrary directions. Note that the first reinforcing fibers and the second reinforcing fibers may be made of the same material or may be made of different materials.

The first resin and the second resin are thermosetting resins or thermoplastic resins. In the case of a thermosetting resin, it is cured by being heated to a predetermined temperature and molded into the inner layer 2 and outer layer 4. In the case of thermoplastic resin, it is heated to a predetermined temperature to soften, then cooled and solidified, and is molded into the inner layer 2 and outer layer 4. Note that the first resin and the second resin may be the same material or may be different materials. Further, for curing or solidifying the first resin and the second resin, any method other than heating can be used, such as a method of emitting light having a predetermined wavelength.

As the thermosetting resin, for example, epoxy resin, unsaturated polyester resin, phenol resin, vinyl ester resin, etc. are used.

As the thermoplastic resin, for example, nylon resin, polyester resin, ABS resin, acrylic resin, polyethylene resin, polystyrene resin, polyamide resin, polypropylene resin, polyvinyl chloride resin, polycarbonate resin, etc. are used.

(Method for manufacturing reinforced resin pipe 1A)
FIG. 4 is a diagram showing a method for manufacturing the reinforced resin pipe 1A according to the first embodiment of the present invention.

In this embodiment, a case will be described in which a reinforced resin pipe 1A is manufactured using a manufacturing apparatus 5 including a cylindrical mandrel 50. The mandrel 50 is attached to the apparatus main body (not shown) so as to be rotatable about the rotation axis O and extend horizontally. An endless steel belt 51 is helically wound around the mandrel 50, and the surface of the steel belt 51 constitutes a core material 100.

The steel belt 51 sequentially moves in the axial direction of the mandrel 50 as the mandrel 50 rotates, and when it moves to the tip of the mandrel 50, it passes through the inside of the mandrel 50 and is returned to the fixed end of the mandrel 50.

The manufacturing apparatus 5 having such a configuration rotates the mandrel 50, and as the steel belt 51 moves to the tip of the mandrel 50, an inner layer forming step, a core material arrangement step, an outer layer forming step, and , the molding process is performed continuously. Here, the description will be made assuming that the first resin and the second resin are thermosetting resins.

First, in the inner layer forming step, the first reinforcing fibers 20 are helically wound around the surface of the steel belt 51, that is, the outer peripheral surface of the core material 100, and the first reinforcing fibers 20 are coated with a first resin. The inner layer 2 is formed by impregnation.

The first reinforcing fibers 20 may be supplied in the form of bundles such as rovings or yarns, or sheets or woven fabrics (cloths) in which fibers are oriented in one direction or in multiple directions. ), it may be supplied in the form of a band like a non-woven fabric.

Further, as an impregnation method of impregnating the first reinforcing fibers 20 with the first resin, for example, before winding the first reinforcing fibers 20 around the core material 100, a tank containing the first resin (impregnating A method of applying the first resin while winding the first reinforcing fibers 20 around the core material 100, a prepreg in which the first reinforcing fibers 20 are pre-impregnated with the first resin. A method such as winding the core material 100 around the core material 100 is used.

Next, in the core material arrangement step, the core layer 3 is formed by arranging a plurality of core materials 30A side by side along the outer peripheral surface of the inner layer 2 according to a predetermined layout pattern.

For example, the core materials 30A are arranged side by side by using a robot manipulator (not shown) that can grasp the core materials 30A and place them at predetermined positions.

At this time, an adhesive may be applied to the concave curved surface 300, the first side surface 302, and the second side surface 303 of the core material 30A. Furthermore, an adhesive, resin, or the like may be applied to the joints 31 and 32 after the plurality of core materials 30A are arranged side by side.

Next, in the outer layer forming step, the second reinforcing fibers 40 are helically wound so as to cover the plurality of core materials 30A, and the second reinforcing fibers 40 are impregnated with a second resin to form an outer layer. form 4.

Note that the second reinforcing fibers 40 may be supplied in the same manner as the first reinforcing fibers 20, or may be supplied in a different manner. Further, the impregnation method for impregnating the second reinforcing fibers 40 with the second resin may be the same impregnation method as the impregnation method for impregnating the first reinforcing fibers 20 with the second resin, or a different impregnation method may be used. Good too.

Next, in the molding step, the first resin impregnated into the first reinforcing fibers 20 and the second resin impregnated into the second reinforcing fibers 40 are cured.

Here, a portion in which the inner layer 2, core layer 3, and outer layer 4 are laminated is inserted into a curing furnace 52 and heated to a predetermined temperature, thereby curing the first resin and the second resin.

In the molding step, the first resin and the second resin may be cured separately. For example, the first resin may be cured after the inner layer forming step or the core material placement step, and the first resin may be cured after the outer layer forming step. , the second resin may be cured. Further, the first resin and the second resin may be heated by heating means such as a heater built into the mandrel 50.

As described above, the reinforced resin pipe 1A is molded by continuously performing a series of steps.

According to the reinforced resin pipe 1A according to the present embodiment, a plurality of core materials 30A formed in a tile shape are arranged along the outer peripheral surface of the inner layer 2 as the core layer 3 between the inner layer 2 and the outer layer 4. will be placed. Therefore, the plurality of core materials 30A having a predetermined thickness T are arranged between the inner layer 2 and the outer layer 4 without being subjected to bending deformation to realize a sandwich structure, thereby improving the strength against buckling deformation. can do.

Moreover, since the core layer 3 is formed by arranging the plurality of core materials 30A in a row along the outer peripheral surface of the inner layer 2, the reinforced resin pipe 1A can be easily manufactured.

At this time, the plurality of core materials 30A are arranged in a staggered manner with respect to the circumferential direction D2 of the reinforced resin tube 1A. Therefore, since the joints 32 are disposed so as not to be continuous in the circumferential direction D2 of the reinforced resin pipe 1A, the strength against buckling deformation can be improved at any position in the axial direction D1 of the reinforced resin pipe 1A. .

Further, each of the plurality of core materials 30A has a concave curved surface 300 that follows the outer peripheral surface of the inner layer 2 and a convex curved surface 301 that follows the inner peripheral surface of the outer layer 4. Therefore, since the core material 30A is molded in close contact with the inner layer 2 and the outer layer 4, the strength against buckling deformation can be improved.

Furthermore, each of the plurality of core materials 30A is made of an anisotropic material whose rigidity differs depending on the direction, and the rigidity in the direction (reinforcing fiber direction 304) that coincides with the radial direction D3 of the reinforced resin pipe 1A is different from that in other directions. The rigidity is higher than that of the Therefore, the stress strain characteristics of the reinforced resin tube 1A in the radial direction D3 become high, so that the strength against buckling deformation can be improved.

(Second embodiment)
FIG. 5 is a front view showing a reinforced resin pipe 1B according to the second embodiment of the present invention. FIG. 6 shows a core material 30B according to a second embodiment of the present invention, in which (a) is a perspective view and (b) is a side view.

In the reinforced resin pipe 1A according to the first embodiment, the core material 30A has been described as being a plate-shaped member. On the other hand, in the reinforced resin pipe 1B according to the second embodiment, the core material 30B includes a honeycomb-shaped wall portion 305 that forms a cavity 306 penetrating the reinforced resin pipe 1B along the radial direction D3. In this case, the shape of the core material 30B is changed. Other basic configurations and manufacturing methods are the same as those in the first embodiment, so the description will focus on the parts that are different from the first embodiment.

When placed on the outer peripheral surface of the inner layer 2, the core material 30B has a honeycomb-shaped wall 305 that stands upright in the radial direction D3 of the reinforced resin tube 1A, and a plurality of voids 306 surrounded by the wall 305. have Therefore, the cross-sectional shape of the wall portion 305 in the radial direction D3 of the reinforced resin tube 1A forms a hexagonal honeycomb structure. Further, the void portion 306 is a cell space that penetrates between the concave curved surface 300 and the convex curved surface 301.

As shown in FIG. 6(a), the core materials 30B are formed so that the hexagonal shape is not chipped and adjacent core materials 30B mesh with each other without any gaps. Therefore, when the plurality of core materials 30B are arranged side by side along the outer circumferential surface of the inner layer 2, the wall portions 305 are arranged without gaps, as shown in FIG.

Note that the shape of the honeycomb structure is not limited to a hexagon, and may be, for example, a triangle, a quadrangle, a circle, or a combination of multiple polygons. Moreover, although the core material 30B shown in FIG. 6(a) has 18 voids 306, the number of voids 306 may be changed as appropriate.

According to the reinforced resin pipe 1B according to the present embodiment, the plurality of core members 30B are provided with a honeycomb-shaped wall portion 305 that forms a void portion 306 penetrating the reinforced resin pipe 1B along the radial direction D3. Therefore, the reinforced resin pipe 1B is covered with the honeycomb-shaped wall portion 305 in the circumferential direction D2 of the reinforced resin pipe 1B, so that the strength against buckling deformation can be improved.

(Third embodiment)
FIG. 7 is a perspective view showing a vertical axis Magnus type wind power generator 10 according to a third embodiment of the present invention. FIG. 8 is a front view showing a schematic configuration of a vertical axis Magnus type wind power generator 1 according to a third embodiment of the present invention.

The Magnus type thrust generator includes reinforced resin pipes 1A and 1B according to the first or second embodiment as cylindrical blades 13 that generate Magnus force by rotating in a fluid. The vertical axis Magnus type wind power generator 10 according to the present embodiment is one application example of the Magnus type thrust generating device.

The vertical axis Magnus type wind power generator 10 includes a support case 11 installed on the installation surface S, a generator 110 and a speed increaser 111 arranged inside the support case 11, and a speed increaser 111. A rotary support part 12 is connected to the generator 110 via a rotary support part 12 that is rotatable about a first rotation axis O1 perpendicular to the installation surface S, and a first rotation support part 12 that is parallel to the first rotation axis O1 is connected to the generator 110 via three cylindrical blades 13 that are rotatable around the second rotation axis O2, and a current plate arranged parallel to the second rotation axis O2 at a position spaced apart from the cylindrical blades 13 by a predetermined distance. 14, and is rotatable around the first rotation axis O1 by being fixed to the rotation support part 12, and each of the three cylindrical blades 13 is arranged on a circumference centered on the first rotation axis O1. It includes a cylindrical wing support part 15 that is pivotally supported.

Each of the three cylindrical wings 13 is made of reinforced resin pipes 1A and 1B according to the first or second embodiment. The cylindrical blade 13 is rotatably supported by an upper rotation transmission shaft section 130A and a lower rotation transmission shaft section 130B, which are respectively arranged coaxially with the second rotation axis O2, and a rotation transmission shaft section 130B connected to the lower rotation transmission shaft section 130B. The drive unit 131 rotates about the second rotation axis O2.

The current plate 14 has, for example, a plate-like shape, and is supported by the cylindrical blade support portion 15 so as to be rotatable about the first rotation axis O1. Further, the baffle plate 14 is arranged at a position opposite to the traveling direction of the cylindrical blade 13 when the cylindrical blade 13 moves clockwise on the circumference centered on the first rotation axis O1.

The vertical axis Magnus type wind power generator 10 having the above configuration generates wind from a predetermined direction while the cylindrical blade 13 is rotated (rotated) clockwise around the second rotation axis O2 by the rotary drive unit 131. (Airflow), a Magnus force is generated in the cylindrical blade 13. Then, the Magnus force generated in the cylindrical blade 13 acts in a direction to move the cylindrical blade 13 clockwise around the first rotation axis O1. As a result, the rotation support part 12 rotates clockwise, and the generator 110 connected to the rotation support part 12 generates electricity.

In addition, as another application example of the Magnus type thrust generation device, the Magnus type thrust generation device may be applied to a wind rotation device, for example, by connecting the rotation support portion 12 to a rotating machine such as a pump. In addition, instead of using wind (airflow) as the energy source of the Magnus type thrust generator, by using water current, waves, tides, etc., the Magnus type thrust generator can be used as a hydroelectric power generator or a tidal power generator. Alternatively, the Magnus type thrust generating device may be applied to a hydraulic rotating device or a tidal rotating device by connecting the rotating support portion 12 to a rotating machine such as a pump.

As described above, according to the Magnus type thrust generator according to the present embodiment, the cylindrical blade 13 includes the reinforced resin pipes 1A and 1B according to the first or second embodiment. Therefore, even if a bending load or the like is applied in the axial direction of the cylindrical blade 13 (second rotation axis O2), the cylindrical blade 13 is not easily deformed, which improves the rigidity and durability of the Magnus type thrust generator. be able to.

(Other embodiments)
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the technical idea of the present invention.

For example, in the first embodiment, the inner layer 2 is formed by helically winding the first reinforcing fibers 20 in the inner layer forming step, and the outer layer 4 is formed by winding the first reinforcing fibers 20 in a helical shape in the outer layer forming step. The explanation has been made assuming that the reinforcing fibers 40 are formed by winding them in a helical shape. On the other hand, the inner layer 2 may be formed by stacking a plurality of layers by winding a plurality of first reinforcing fibers 20 in a helical shape in the inner layer forming step, and the outer layer 4 may be formed by stacking a plurality of layers by winding a plurality of first reinforcing fibers 20 in a helical shape, and In the process, a plurality of layers may be laminated by winding a plurality of second reinforcing fibers 40 in a helical shape. In that case, the plurality of first reinforcing fibers 20 may be laminated so that their orientations intersect, or the plurality of second reinforcing fibers 40 may be laminated so that their orientations intersect. good.

Furthermore, in the first embodiment, the plurality of core materials 30A are described as being arranged by a robot manipulator in the core material arrangement step. On the other hand, in the core material arrangement process, the plurality of core materials 30A are continuously supplied to the outer peripheral surface of the inner layer 2 while being temporarily fixed to the tape member, so that the core materials 30A are sequentially arranged. You can.

Specifically, the tape member is wound into a roll with a plurality of core materials 30A arranged in one row or in multiple rows in the supply direction (longitudinal direction) of the tape member and temporarily secured. 50 is sequentially delivered to the outer circumferential surface of the inner layer 2. Then, the plurality of core materials 30A are arranged along the outer circumferential surface of the inner layer 2 by detaching from the tape member in order from those adhered to the outer circumferential surface of the inner layer 2. In addition, when the tape member is constituted by a tape member containing reinforcing fibers, the second layer forming the outer layer 4 is wound by helically winding the tape member while temporarily fixing the plurality of core materials 30A. It may also be used as the reinforcing fiber 40.

Furthermore, in the first and second embodiments described above, the cross-sectional shape of the reinforced resin pipes 1A and 1B is circular, as shown in FIG. 2, but the cross-sectional shape of the reinforced resin pipes 1A and 1B may be polygonal. In that case, the shapes and layout patterns of the core materials 30A and 30B may be changed as appropriate.

1A, 1B...Reinforced resin pipe, 2...Inner layer, 3...Core layer, 4...Outer layer,
5... Manufacturing equipment, 10... Vertical axis Magnus type wind generator, 11... Support casing,
12... Rotation support part, 13... Cylindrical blade, 14... Current plate, 15... Cylindrical blade support part,
20... First reinforcing fiber, 30A, 30B... Core material, 31, 32... Joint,
40... Second reinforcing fiber, 50... Mandrel, 51... Steel belt,
52... Hardening furnace, 100... Core material, 110... Generator, 111... Speed increaser,
130A... Upper rotation transmission shaft part, 130B... Lower rotation transmission shaft part,
131... Rotation drive unit, 300... Concave curved surface, 301... Convex curved surface,
302...first side surface, 303...second side surface, 304...reinforcing fiber direction,
305...Wall part, 306...Void part,
D1...Axial direction, D2...Circumferential direction, D3...Radial direction

Claims (7)

A reinforced resin tube used as a cylindrical blade that generates Magnus force by rotating in a fluid,
an inner layer made of a first fiber-reinforced resin formed into a tubular shape;
a plurality of core materials each formed in the shape of a tile and arranged side by side along the outer peripheral surface of the inner layer;
and an outer layer made of a second fiber-reinforced resin formed to cover the plurality of core materials,
Each of the plurality of core materials is
It is made of an anisotropic material whose stiffness varies depending on the direction, and is arranged so that the stiffness in a direction that coincides with the radial direction of the tube is higher than the stiffness in other directions.
A reinforced resin pipe characterized by: A reinforced resin tube used as a cylindrical blade that generates Magnus force by rotating in a fluid,
an inner layer made of a first fiber-reinforced resin formed into a tubular shape;
a plurality of core materials each formed in the shape of a tile and arranged side by side along the outer peripheral surface of the inner layer;
and an outer layer made of a second fiber-reinforced resin formed to cover the plurality of core materials,
Each of the plurality of core materials is
A honeycomb-shaped wall portion is provided that forms a cavity passing through the tube along the radial direction, and the wall portion is formed so that the adjacent core materials mesh with each other without chipping.
A reinforced resin pipe characterized by: The plurality of core materials are
arranged in a staggered manner in the circumferential direction of the tube,
The reinforced resin pipe according to claim 1 or 2, characterized in that: Each of the plurality of core materials is
a concave curved surface that follows the outer peripheral surface of the inner layer;
a convex curved surface that follows the inner circumferential surface of the outer layer;
The reinforced resin pipe according to any one of claims 1 to 3, characterized in that: A method for manufacturing a reinforced resin tube used as a cylindrical blade that generates Magnus force by rotating in a fluid, the method comprising:
an inner layer forming step of forming an inner layer by helically winding a first reinforcing fiber around the outer peripheral surface of the core material and impregnating the first reinforcing fiber with a first resin;
a core material arrangement step of arranging a plurality of core materials, each formed in a tile shape, side by side along the outer peripheral surface of the inner layer;
an outer layer forming step of forming an outer layer by winding a second reinforcing fiber in a helical shape so as to cover the plurality of core materials, and impregnating the second reinforcing fiber with a second resin;
a molding step of curing or solidifying the first resin and the second resin,
The core material placement step includes:
arranging the plurality of core materials side by side by sequentially sending out a tape member to which the plurality of core materials are temporarily fixed to the outer peripheral surface of the inner layer;
A method for manufacturing a reinforced resin pipe, characterized by: The reinforced resin tube according to any one of claims 1 to 4 is provided as a cylindrical blade that generates a Magnus force by rotating in a fluid.
A Magnus type thrust generator characterized by: Using the Magnus type thrust generator according to claim 6,
A wind power generator, a hydraulic power generator or a tidal power generator.

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