CN107916820B - Composite material tower for transmission line and preparation method thereof - Google Patents
Composite material tower for transmission line and preparation method thereof Download PDFInfo
- Publication number
- CN107916820B CN107916820B CN201711025134.9A CN201711025134A CN107916820B CN 107916820 B CN107916820 B CN 107916820B CN 201711025134 A CN201711025134 A CN 201711025134A CN 107916820 B CN107916820 B CN 107916820B
- Authority
- CN
- China
- Prior art keywords
- tower
- composite
- composite fiber
- thermosetting resin
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a composite material tower for a transmission line and a preparation method thereof. The pole body of the composite material pole tower for the transmission line is formed by connecting a plurality of sections of pole tower units, the pole tower units are of hollow structures, and at least one pole tower unit in the plurality of sections of pole tower units is formed by alternately winding circumferential glass fibers coated with thermosetting resin and glass fiber unidirectional cloth coated with thermosetting resin to form a composite fiber body; the outer surface of the composite fiber body is alternately wound by annular carbon fibers coated with thermosetting resin and carbon fiber unidirectional cloth coated with thermosetting resin to form a first composite fiber layer; the outer surface of the first composite fiber layer is wound with circumferential glass fibers coated with thermosetting resin to form a second composite fiber layer; and the carbon fiber unidirectional cloth coated with the thermosetting resin and the glass fiber unidirectional cloth coated with the thermosetting resin are laid at a zero angle.
Description
Technical Field
The invention belongs to the technical field of transmission towers, and relates to a composite material tower for a transmission line and a preparation method thereof.
Background
The tower is the main bearing structure in the transmission line, must guarantee its safe and reliable in the use, and the tower that uses most extensively at present mainly has several categories such as wooden pole, concrete pole, steel pipe pole and iron tower. However, wood poles are easy to rot, concrete poles are easy to crack, and steel structural poles are easy to rust, so that the poles and towers have the defects of poor durability, high construction and transportation cost, high operation and maintenance difficulty and the like, and the safe operation of a line is influenced. The composite material tower has excellent insulation property, corrosion resistance, mechanical property and lower maintenance cost, can replace the traditional tower to be applied to the network construction of power transmission and distribution lines, and is particularly suitable for the power grid erection in severe environment areas with frequent lightning, serious pollution and serious environmental corrosion. With the development of new material technology and preparation technology thereof, composite material poles and towers are increasingly concerned by the domestic and foreign power industry, and have been applied in considerable scale in the power transmission projects in north america, western europe and other countries in recent years. The composite material tower is also applied to China to a certain extent, and is prepared by taking reinforced thermosetting resin such as glass fiber and carbon fiber as a base material and adopting processes such as small-angle winding and pultrusion, but the fiber is easy to slip during the small-angle winding, the near-zero layering cannot be realized, and the waste of end materials is easily caused by the small-angle winding.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a composite tower for power transmission lines and a method for manufacturing the same. The composite material tower for the transmission line has the advantages of high rigidity, light weight, good toughness and excellent fatigue resistance, and can replace the traditional composite material tower for the transmission line.
In order to achieve the above object, the present invention provides a composite material tower for a transmission line, wherein a rod body of the composite material tower for the transmission line is formed by connecting a plurality of sections of tower units, the tower units are of a hollow structure,
in the plurality of sections of tower units, at least one tower unit is formed by alternately winding circumferential glass fibers coated with thermosetting resin and glass fiber unidirectional cloth coated with thermosetting resin to form a composite fiber body; the outer surface of the composite fiber body is alternately wound by annular carbon fibers coated with thermosetting resin and carbon fiber unidirectional cloth coated with thermosetting resin to form a first composite fiber layer; the outer surface of the first composite fiber layer is wound with circumferential glass fibers coated with thermosetting resin to form a second composite fiber layer;
wherein the carbon fiber unidirectional cloth coated with the thermosetting resin and the glass fiber unidirectional cloth coated with the thermosetting resin are laid at a zero angle.
In the composite material tower for the transmission line, the first composite fiber layers of all tower units are formed by alternately winding annular carbon fibers coated with thermosetting resin and carbon fiber unidirectional cloth coated with thermosetting resin; or the first composite fiber layer of one part of the tower units is formed by alternately winding circumferential glass fibers coated with thermosetting resin and glass fiber unidirectional cloth coated with thermosetting resin, and the first composite fiber layer of the other part of the tower units is formed by alternately winding circumferential carbon fibers coated with thermosetting resin and carbon fiber unidirectional cloth coated with thermosetting resin; and all the carbon fiber unidirectional cloth coated with the thermosetting resin and the glass fiber unidirectional cloth coated with the thermosetting resin in the tower units are laid at a zero angle. The zero-angle laying means that the angle between the strength direction of the carbon fiber unidirectional cloth or the glass fiber unidirectional cloth and the axis of the tower unit is zero, namely the carbon fiber unidirectional cloth and the glass fiber unidirectional cloth are laid in parallel along the axis of the tower unit.
In the composite material tower for the power transmission line, the inner surface and the outer surface are relative to the axis of the tower unit, the tower unit is of a hollow structure, the surface facing the axis of the tower unit is the inner surface, and the surface departing from the axis of the tower unit is the outer surface.
According to a particular embodiment of the invention, the thermosetting resin comprises polyurethane or epoxy. When the first composite fiber layer adopts carbon fibers, the thermosetting resin is epoxy resin; when the first composite fiber layer is made of glass fibers, the thermosetting resin is polyurethane.
According to the specific embodiment of the invention, preferably, in the tower unit at the lower section of the rod body, the circumferential glass fiber coated with epoxy resin and the glass fiber unidirectional cloth coated with epoxy resin are alternately wound on the inner surface of the hollow structure to form the composite fiber body, and the glass fiber unidirectional cloth coated with epoxy resin is laid at a zero angle;
alternately winding annular carbon fibers coated with epoxy resin and carbon fiber unidirectional cloth coated with epoxy resin on the outer surface of the composite fiber body to form a first composite fiber layer, and laying the carbon fiber unidirectional cloth coated with epoxy resin on the outer surface of the composite fiber body at a zero angle;
and the circumferential glass fiber coated with epoxy resin is wound on the outer surface of the first composite fiber layer to form a second composite fiber layer.
According to the specific embodiment of the invention, preferably, in the tower units at the middle section and the upper section of the rod body, the circumferential glass fiber coated with polyurethane and the glass fiber unidirectional cloth coated with polyurethane are alternately wound on the inner surface of the hollow structure to form a composite fiber body, and the glass fiber unidirectional cloth coated with polyurethane is laid at a zero angle;
the first composite fiber layer is formed by alternately winding circumferential glass fibers coated with polyurethane and glass fiber unidirectional cloth coated with polyurethane on the outer surface of the composite fiber body, and the glass fiber unidirectional cloth coated with polyurethane is laid on the outer surface of the composite fiber body at a zero angle;
and the circumferential glass fiber coated with polyurethane is wound on the outer surface of the first composite fiber layer to form a second composite fiber layer.
In the composite material tower for the power transmission line, the upper section of the tower body refers to a tower unit connected with the cross arm and is far away from the ground when in use, the lower section refers to a tower unit connected with the steel grounding flange and is close to the ground or is in contact with the ground when in use, the middle section refers to a tower unit positioned between the upper section and the lower section, the upper section and the middle section can be composed of one or more tower units, and the lower section can also be composed of one or more tower units. The type of resin in the tower unit is related to the type of fiber, the selection of the type of fiber depends on the role of the tower unit in the tower shaft: the lower section of the pole body of the pole tower is made of carbon fiber, glass fiber and epoxy resin, so that the pole body can bear larger bearing capacity; the middle and upper pole tower units of the pole body of the pole tower are made of glass fiber and polyurethane, so that the pole body of the pole tower has better rigidity.
According to a specific embodiment of the present invention, preferably, the diameter of the circumferential glass fiber in the composite fiber body is 13-17 μm; the diameter of the annular carbon fiber or the annular glass fiber in the first composite fiber layer is 7-17 mu m; the diameter of the circumferential glass fiber in the second composite fiber layer is 13-17 μm.
In the composite material tower for the power transmission line, the composite fiber body adopts roving with the diameter of 13-17 mu m, the first composite fiber layer adopts roving with the diameter of 7-17 mu m, the roving is coated by thermosetting resin, and then the glass fiber in the second composite fiber layer is wound and bound, so that zero-angle laying of the carbon fiber unidirectional cloth and the glass fiber unidirectional cloth is realized, and no yarn slip occurs. Due to the realization of zero-angle laying, the material waste caused by small-angle winding is reduced, and compared with the small-angle winding, the preparation time of the tower unit is reduced. Compared with the existing composite material pole tower, the composite material pole tower has better strength and rigidity.
According to a specific embodiment of the present invention, preferably, the outer surface of the second composite fiber layer is sprayed with fluorocarbon paint; the fluorocarbon paint is prepared by mixing fluorocarbon resin, color filler, diluent solvent and curing agent according to the mass ratio of 10-12:1-2:4-5: 1-2. The color filler can be inorganic or organic filler, the diluting solvent can be organic solvent such as acetone, and the curing agent refers to a special curing agent for fluorocarbon resin and comprises anhydride or amine curing agent. The surface of the tower unit is sprayed with fluorocarbon paint to form a corrosion-resistant and aging-resistant layer, so that the aging resistance of the composite material tower body for the transmission line can be greatly improved, and the service life is prolonged.
According to the specific embodiment of the invention, preferably, the shaft body is formed by connecting more than 3 sections of tower units, and two adjacent sections of tower units are fixedly connected through flanges.
According to the specific embodiment of the invention, preferably, a steel grounding flange is connected to the bottom of the stem, and the stem bottom is inserted into the steel grounding flange in a conical manner and is bonded with the steel grounding flange. The bonding mode can meet the requirement of larger bending rigidity of the bottom of the shaft body.
According to the specific embodiment of the invention, preferably, the upper part of the rod body is connected with the composite material insulating cross arm through a steel hoop. The composite material insulating cross arm is prepared by impregnating glass fiber with epoxy resin and performing a pultrusion process.
According to the specific embodiment of the invention, preferably, the composite material insulating cross arm is provided with an insulating pull rod.
The invention also provides a preparation method of the composite material tower for the transmission line, which comprises the following steps:
the method comprises the following steps: coating a release agent on the surface of a mould, and then alternately and spirally winding the glass fiber impregnated with the thermosetting resin glue solution and the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the mould to reach a preset thickness to form a composite fiber body, wherein the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mould at a zero angle;
step two: adjusting the fiber tension and the preset linear shape of the carbon fibers, adjusting the tension of the carbon fiber unidirectional cloth, then alternately and spirally winding the carbon fibers impregnated with the thermosetting resin glue solution and the carbon fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the surface of the composite fiber body to reach a preset thickness to form a first composite fiber layer, and then continuously winding the glass fibers impregnated with the thermosetting resin glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the carbon fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mold at a zero angle;
or adjusting the fiber tension and the preset linear shape of the glass fiber, adjusting the tension of the glass fiber unidirectional cloth, and then alternately and spirally winding the glass fiber impregnated with the thermosetting resin glue solution and the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the surface of the composite fiber body to reach the preset thickness to form a first composite fiber layer; then winding the continuous glass fiber impregnated with the thermosetting resin glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mould at a zero angle;
step three: and (3) curing, demolding and finishing the composite fiber body processed in the second step to obtain a crude product of the pole tower unit, spraying fluorocarbon paint on the surface of the crude product of the pole tower unit, and heating, baking and forming to obtain the pole tower unit.
In the above preparation method, the first step may be performed by: according to the process requirements, a mould is cleaned and coated with a release agent, glass fibers sequentially pass through a sheep eye, a yarn guide pore plate and a yarn dividing comb, then are drawn into a glue groove filled with thermosetting resin, pass through a frame type pressure lever, are drawn to the yarn comb through a glue dripping roller, and then the glass fibers dipped in thermosetting resin glue solution are spirally wound on the mould to reach the preset thickness and length to form a composite fiber body.
According to the specific embodiment of the present invention, preferably, in the third step, the curing of the composite fiber body is divided into three stages, the curing temperature of the first stage is 80-100 ℃, and the curing time is 0.5 h; the curing temperature of the second stage is 100-120 ℃, and the curing time is 1 h; the curing temperature of the third stage is 110-.
According to the specific embodiment of the present invention, preferably, in the third step, the temperature for the heating, baking and forming is 110-120 ℃, and the time is 1.5 h.
According to the specific embodiment of the present invention, preferably, the preparation method further comprises a step of connecting the tower units into tower shafts, and the step comprises:
arranging a plurality of sections of tower units with trimmed end parts on a general assembly support, smearing adhesive on the end parts of the tower units to bond two adjacent tower units, then inserting flanges into the two end parts which are bonded with each other, keeping the planes of the flanges perpendicular to the axis of the tower units, polishing connecting joints formed by the flanges and the tower units, and reinforcing the connecting joints with resin by adopting epoxy resin or unsaturated polyester, so that the flanges and the tower units are integrated into a whole, and a tower rod body is obtained.
According to the specific embodiment of the invention, preferably, the preparation method further comprises the step of connecting the composite insulating cross arm to the pole body of the tower by using a steel hoop.
According to the specific embodiment of the invention, preferably, the preparation method further comprises the step of connecting insulating pull rods between two ends of the composite insulating cross arm and the pole body of the pole tower.
According to the specific embodiment of the invention, preferably, the preparation method further comprises the step of inserting the bottom cone of the pole body of the tower into the steel grounding flange and bonding the bottom cone with the steel grounding flange.
The invention also provides the application of the composite material tower for the transmission line in power transportation, communication, high-speed railways and municipal administration.
Compared with the prior composite material tower, the invention has the beneficial effects that:
(1) according to the invention, the tower units with different functions are obtained by adopting the mode of combining glass fiber, carbon fiber and epoxy resin and combining glass fiber and polyurethane to design the fiber laying layer of the composite material tower, so that the tower with high rigidity and excellent fatigue resistance is obtained;
(2) according to the invention, the tower unit is manufactured by adopting a method of laying zero-degree fibers and spirally winding, so that material loss is saved compared with small-angle winding, meanwhile, the problem of yarn slipping caused by small-angle winding is avoided, the process operability is strong, and the working efficiency is higher;
(3) compared with the prior art, the pole body of the pole tower made of the composite fibers and the thermosetting resin has better strength and rigidity, and has better advantages when being applied in some special environments.
(4) The shaft body of the tower for the transmission line is sprayed with the fluorocarbon paint, so that the aging resistance of the shaft body of the tower for the transmission line can be greatly improved, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural view of a composite tower for a power transmission line in example 1.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited thereto.
Example 1
The embodiment provides a composite material tower for a power transmission line, the structure of the composite material tower for the power transmission line is shown in fig. 1, the composite material tower for the power transmission line is formed by connecting 3 sections of tower units 1 with hollow structures, and two adjacent sections of tower units are fixedly connected through flanges 2;
in the pole tower unit 1 at the middle section and the upper section of the pole body, the inner surface of the hollow structure is alternately wound by the circumferential glass fiber coated with polyurethane and the glass fiber unidirectional cloth coated with polyurethane to form a composite fiber body, the diameter of the glass fiber is 17 mu m, and the glass fiber unidirectional cloth coated with polyurethane is laid at a zero angle; the method comprises the following steps that circumferential glass fiber coated with polyurethane and glass fiber unidirectional cloth coated with the polyurethane are alternately wound on the outer surface of a composite fiber body to form a first composite fiber layer, the glass fiber is roving with the diameter of 17 mu m, and the glass fiber unidirectional cloth coated with the polyurethane is laid on the outer surface of the composite fiber body at a zero angle; and the circumferential glass fiber coated with polyurethane is wound on the outer surface of the first composite fiber layer to form a second composite fiber layer, and the glass fiber is roving with the diameter of 17 mu m.
In the tower unit 1 at the lower section of the rod body, the inner surface of a hollow structure is alternately wound by circumferential glass fiber coated with epoxy resin and glass fiber unidirectional cloth coated with epoxy resin to form a composite fiber body, the diameter of the glass fiber is 17 mu m, and the glass fiber unidirectional cloth coated with epoxy resin is laid at a zero angle; alternately winding annular carbon fibers coated with epoxy resin and carbon fiber unidirectional cloth coated with epoxy resin on the outer surface of the composite fiber body to form a first composite fiber layer, wherein the carbon fibers are roving with the diameter of 7 mu m, and the carbon fiber unidirectional cloth coated with epoxy resin is laid on the outer surface of the composite fiber body at a zero angle; and the circumferential glass fiber coated with epoxy resin is wound on the outer surface of the first composite fiber layer to form a second composite fiber layer, and the glass fiber is roving with the diameter of 17 mu m.
The bottom of the rod body is inserted into the steel grounding flange 3 in a conical manner and is bonded with the steel grounding flange 3, and the upper part of the rod body is connected with a composite material insulating cross arm 5 through a steel hoop 4; and an insulating pull rod 6 is arranged on the composite material insulating cross arm 5. The composite material insulating cross arm 5 is prepared by impregnating glass fiber with epoxy resin and performing pultrusion.
The composite material tower for the transmission line is prepared by the following method:
(1) preparing a middle and upper pole tower unit 1 of the pole body:
the method comprises the following steps: according to the process requirements, cleaning the surface of a die and coating a release agent, sequentially passing glass fibers through sheep eyes, a yarn guide pore plate and a yarn dividing comb, then drawing the glass fibers into a glue groove filled with polyurethane, drawing the glass fibers into the yarn comb through a frame type pressure bar and a glue dripping roller, and then alternately and spirally winding the glass fibers dipped with polyurethane glue solution and the glass fiber unidirectional cloth dipped with the polyurethane glue solution on the die to reach the preset thickness and length to form a composite fiber body;
step two: adjusting the tension and the preset linear shape of the glass fiber, adjusting the tension of the glass fiber unidirectional cloth, and then alternately and spirally winding the glass fiber dipped with the polyurethane glue solution and the glass fiber unidirectional cloth dipped with the polyurethane glue solution on the surface of the composite fiber body to reach the preset thickness to form a first composite fiber layer; then winding the continuous glass fiber dipped with the polyurethane glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the glass fiber unidirectional cloth soaked with the polyurethane glue solution is laid on the surface of the mould at a zero angle; the glass fiber unidirectional cloth is tightly bound on the outer surface of the mold by the glass fibers in the composite fiber body, the first composite fiber layer and the second composite fiber layer;
step three: placing the composite fiber body coated by the first composite fiber layer and the second composite fiber layer in a curing furnace, curing at 90 ℃ for 0.5h, curing at 110 ℃ for 1h, curing at 120 ℃ for 2.5h, discharging from the furnace, demolding to form a hollow structure, and finishing to obtain a first tower unit crude product;
step four: and (3) spraying fluorocarbon paint on the rod body (all surfaces) of the crude rod body of the pole tower unit, heating for 1.5 hours at the temperature of 120 ℃, and baking and forming to obtain the first pole tower unit for the middle section and the upper section of the rod body.
(2) Preparing a tower unit 1 at the lower section of the rod body:
the method comprises the following steps: according to the process requirements, cleaning the surface of a die and coating a release agent, sequentially passing glass fibers through sheep eyes, a yarn guide pore plate and a yarn dividing comb, then drawing the glass fibers into a glue groove filled with epoxy resin, drawing the glass fibers into the yarn comb through a frame type pressure bar and a glue dripping roller, and then alternately and spirally winding the glass fibers impregnated with epoxy resin glue solution and glass fiber unidirectional cloth impregnated with epoxy resin glue solution on the die to reach the preset thickness and length to form a composite fiber body;
step two: adjusting the tension and the preset linear shape of the carbon fibers, adjusting the tension of the carbon fiber unidirectional cloth, and then alternately and spirally winding the carbon fibers impregnated with the epoxy resin glue solution and the carbon fiber unidirectional cloth impregnated with the epoxy resin glue solution on the surface of the composite fiber body to reach the preset thickness to form a first composite fiber layer; then winding the continuous glass fiber impregnated with the epoxy resin glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the glass fiber unidirectional cloth impregnated with the epoxy resin glue solution and the carbon fiber unidirectional cloth impregnated with the epoxy resin glue solution are laid on the surface of the mold at a zero angle; the glass fiber unidirectional cloth and the carbon fiber unidirectional cloth are tightly bound on the outer surface of the mold by the glass fibers in the composite fiber body and the second composite fiber layer and the carbon fibers in the first composite fiber layer;
step three: placing the composite fiber body coated by the first composite fiber layer and the second composite fiber layer in a curing furnace, curing at 90 ℃ for 0.5h, curing at 110 ℃ for 1h, curing at 120 ℃ for 2.5h, discharging from the furnace, demolding to form a hollow structure, and finishing to obtain a first tower unit crude product;
step four: and (3) spraying the rod body (all surfaces) of the crude rod body of the pole tower unit with fluorocarbon paint, heating for 1.5 hours at 120 ℃, and baking for forming to obtain a second pole tower unit for the lower section of the rod body.
(3) Connecting the pole body of the tower:
the method comprises the following steps: sequentially arranging 2 sections of first tower units and 1 section of second tower units with trimmed end parts on a final assembly support, coating an adhesive on two opposite end parts of adjacent tower units to bond the adjacent two tower units, then inserting a flange 2 into the two end parts which are bonded with each other, keeping the plane of the flange perpendicular to the axis of the tower units, and polishing and reinforcing resin at a joint seam formed by the inserted flange and the tower units to integrate the flange and the tower units into a whole to obtain a tower body;
step two: connecting a composite material insulating cross arm 5 to a first tower unit on the upper section of the tower body of the tower by adopting a steel hoop 4 connection mode, and connecting two ends of the composite material insulating cross arm 5 with the first tower unit on the upper section of the tower body of the tower by adopting an insulating pull rod 6;
step three: inserting a second tower unit cone at the lower section of the tower rod body into the steel grounding flange 3, and bonding the second tower unit cone with the steel grounding flange 3;
alternatively, the first and second electrodes may be,
the method comprises the following steps: inserting the 1 section of the second tower unit 1 cone into the steel grounding flange 3, and bonding the second tower unit 1 cone with the steel grounding flange 3 to form a lower section of tower unit;
step two: sequentially arranging 2 sections of first tower units with trimmed end parts and 1 section of lower sections on a general assembly support by using tower units, coating adhesive on two opposite end parts of adjacent tower units to bond the two adjacent tower units, inserting flanges into the two end parts which are bonded with each other, keeping the plane of the flange vertical to the axis of the tower units, polishing and reinforcing resin at a joint seam formed by the inserted flanges and the tower units to enable the flanges and the tower units to form a whole, and obtaining a tower rod body;
step three: adopt steel staple bolt 4 connected mode with insulating cross arm 5 of combined material on the first kind shaft tower unit of pole tower pole body upper segment, adopt insulating pull rod 6 to connect between the insulating cross arm 5 both ends of this combined material and the first kind shaft tower unit of pole tower pole body upper segment.
The fluorocarbon paint of the embodiment is prepared from the following raw materials in parts by weight: 12 parts of fluorocarbon resin, 1 part of organic color filler, 5 parts of acetone solvent and 1 part of special curing agent for fluorocarbon resin.
The mechanical property test is carried out on the composite material transmission line tower A and the existing composite material transmission line tower B, and the test results are shown in table 1:
TABLE 1
As can be seen from table 1, under the same diameter and length, the weight of the tower a is reduced by 2% compared with the weight of the tower B, but the longitudinal bending strength is improved by 33.33%, the compressive strength is improved by 20%, and the shear strength is improved by 4.8%. The total weight of the composite material of the tower body is 2167kg (without hardware fittings), and the weight is reduced by 46kg compared with the existing composite tower.
Therefore, the composite material tower provided by the invention adopts the carbon fiber, the weight of the tower is greatly reduced, the structural design is reasonable, the mechanical property is excellent, the longitudinal bending strength, the compression strength and the shearing resistance of the composite material tower for the power transmission line can be greatly improved, and the defect of insufficient rigidity of the existing composite material tower is overcome.
Claims (15)
1. The utility model provides a combined material shaft tower for transmission line which characterized in that: the pole body of the composite material pole tower for the transmission line is formed by connecting a plurality of sections of pole tower units, the pole tower units are of hollow structures,
in the plurality of sections of tower units, at least one tower unit is formed by alternately winding circumferential glass fibers coated with thermosetting resin and glass fiber unidirectional cloth coated with thermosetting resin to form a composite fiber body; the outer surface of the composite fiber body is alternately wound by annular carbon fibers coated with thermosetting resin and carbon fiber unidirectional cloth coated with thermosetting resin to form a first composite fiber layer; the outer surface of the first composite fiber layer is wound with circumferential glass fibers coated with thermosetting resin to form a second composite fiber layer;
wherein the thermosetting resin-coated carbon fiber unidirectional cloth and the thermosetting resin-coated glass fiber unidirectional cloth are laid at a zero angle;
in the tower unit at the lower section of the rod body, the inner surface of the hollow structure is alternately wound by circumferential glass fiber coated with epoxy resin and glass fiber unidirectional cloth coated with epoxy resin to form a composite fiber body, and the glass fiber unidirectional cloth coated with epoxy resin is laid at a zero angle;
the outer surface of the composite fiber body in the tower unit at the lower section of the rod body is alternately wound by annular carbon fibers coated with epoxy resin and carbon fiber unidirectional cloth coated with epoxy resin to form a first composite fiber layer, and the carbon fiber unidirectional cloth coated with epoxy resin is laid on the outer surface of the composite fiber body in the tower unit at the lower section of the rod body at a zero angle;
the outer surface of a first composite fiber layer in a tower unit at the lower section of the rod body is wound with circumferential glass fiber coated with epoxy resin to form a second composite fiber layer;
in the tower units at the middle section and the upper section of the rod body, the inner surface of the hollow structure is alternately wound by the circumferential glass fiber coated with polyurethane and the glass fiber unidirectional cloth coated with polyurethane to form a composite fiber body, and the glass fiber unidirectional cloth coated with polyurethane is laid at a zero angle;
the outer surfaces of the composite fiber bodies in the tower units at the middle section and the upper section of the rod body are alternately wound by circumferential glass fibers coated with polyurethane and glass fiber unidirectional cloth coated with polyurethane to form a first composite fiber layer, and the glass fiber unidirectional cloth coated with polyurethane is laid on the outer surfaces of the composite fiber bodies in the tower units at the middle section and the upper section of the rod body at a zero angle;
and the outer surface of the first composite fiber layer in the tower unit at the middle section and the upper section of the rod body is wound with the circumferential glass fiber coated with polyurethane to form a second composite fiber layer.
2. The composite tower for transmission lines of claim 1, wherein: the diameter of the circumferential glass fiber in the composite fiber body in the plurality of sections of tower units is 13-17 mu m;
the diameter of the circumferential carbon fiber or the circumferential glass fiber in the first composite fiber layer in the tower units of the plurality of sections is 7-17 mu m;
the diameter of the annular glass fiber in the second composite fiber layer in the plurality of sections of tower units is 13-17 mu m.
3. The composite tower for transmission lines of claim 1, wherein: the outer surface of the second composite fiber layer in the plurality of sections of tower units is sprayed with fluorocarbon paint; the fluorocarbon paint is prepared by mixing fluorocarbon resin, color filler, diluent solvent and curing agent according to the mass ratio of 10-12:1-2:4-5: 1-2.
4. The composite tower for transmission lines of claim 1, wherein: the pole body is formed by connecting more than 3 sections of pole tower units, and two adjacent sections of pole tower units are fixedly connected through flanges.
5. The composite tower for transmission lines of claim 4, wherein: the bottom of the rod body is connected with a steel grounding flange, and the bottom of the rod body is inserted into the steel grounding flange in a conical mode and is bonded with the steel grounding flange.
6. The composite tower for transmission lines of claim 4, wherein: the upper part of the rod body is connected with a composite material insulating cross arm through a steel hoop.
7. The composite tower for transmission lines of claim 6, wherein: and an insulating pull rod is arranged on the composite material insulating cross arm.
8. A method of manufacturing a composite tower for a transmission line according to any one of claims 1 to 7, comprising the steps of:
the method comprises the following steps: coating a release agent on the surface of a mould, and then alternately and spirally winding the glass fiber impregnated with the thermosetting resin glue solution and the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the mould to reach a preset thickness to form a composite fiber body, wherein the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mould at a zero angle;
step two: adjusting the fiber tension and the preset linear shape of the carbon fibers, adjusting the tension of the carbon fiber unidirectional cloth, then alternately and spirally winding the carbon fibers impregnated with the thermosetting resin glue solution and the carbon fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the surface of the composite fiber body to reach a preset thickness to form a first composite fiber layer, and then continuously winding the glass fibers impregnated with the thermosetting resin glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the carbon fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mold at a zero angle;
or adjusting the fiber tension and the preset linear shape of the glass fiber, adjusting the tension of the glass fiber unidirectional cloth, and then alternately and spirally winding the glass fiber impregnated with the thermosetting resin glue solution and the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution on the surface of the composite fiber body to reach the preset thickness to form a first composite fiber layer; then winding the continuous glass fiber impregnated with the thermosetting resin glue solution on the outer surface of the first composite fiber layer to form a second composite fiber layer; the glass fiber unidirectional cloth impregnated with the thermosetting resin glue solution is laid on the surface of the mould at a zero angle;
step three: and (3) curing, demolding and finishing the composite fiber body processed in the second step to obtain a crude product of the pole tower unit, spraying fluorocarbon paint on the surface of the crude product of the pole tower unit, and heating, baking and forming to obtain the pole tower unit.
9. The method of claim 8, wherein: in the third step, the curing of the composite fiber body is divided into three stages, wherein the curing temperature of the first stage is 80-100 ℃, and the curing time is 0.5 h; the curing temperature of the second stage is 100-120 ℃, and the curing time is 1 h; the curing temperature of the third stage is 110-.
10. The method of claim 9, wherein: in the third step, the temperature for heating, baking and forming is 110-120 ℃, and the time is 1.5 h.
11. The method of claim 8, wherein: the preparation method also comprises the step of connecting the tower units into a tower rod body, wherein the step comprises the following steps:
arranging a plurality of sections of tower units with trimmed end parts on a general assembly support, smearing adhesive on the end parts of the tower units to bond two adjacent tower units, then inserting flanges into the two end parts which are bonded with each other, keeping the planes of the flanges perpendicular to the axis of the tower units, polishing connecting joints formed by the flanges and the tower units, and reinforcing the connecting joints with resin by adopting epoxy resin or unsaturated polyester, so that the flanges and the tower units are integrated into a whole, and a tower rod body is obtained.
12. The method of claim 11, wherein: the preparation method further comprises the step of connecting the composite insulating cross arm to the pole body of the pole tower by using a steel hoop.
13. The method of manufacturing according to claim 12, wherein: the preparation method further comprises the step of connecting insulating pull rods between two ends of the composite insulating cross arm and the pole body of the pole tower.
14. The method of manufacturing according to claim 13, wherein: the preparation method further comprises the step of inserting the bottom cone of the pole body of the pole tower into the steel grounding flange and bonding the bottom cone with the steel grounding flange.
15. Use of the composite tower according to any one of claims 1 to 7 for power transmission lines in electric power transportation, communications, high speed railways and in municipalities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025134.9A CN107916820B (en) | 2017-10-27 | 2017-10-27 | Composite material tower for transmission line and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025134.9A CN107916820B (en) | 2017-10-27 | 2017-10-27 | Composite material tower for transmission line and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107916820A CN107916820A (en) | 2018-04-17 |
| CN107916820B true CN107916820B (en) | 2020-03-27 |
Family
ID=61895052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711025134.9A Active CN107916820B (en) | 2017-10-27 | 2017-10-27 | Composite material tower for transmission line and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107916820B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664523A (en) * | 2018-11-30 | 2019-04-23 | 合肥海银杆塔有限公司 | A kind of preparation method of composite material pole tower |
| CN111775512B (en) * | 2020-07-30 | 2022-06-24 | 重庆金山洋生管道有限公司 | High-strength composite material structure pipe and processing technology thereof |
| CN112721130A (en) * | 2020-12-07 | 2021-04-30 | 宁波市电力设计院有限公司 | Manufacturing process of light composite material tower, core mold and light composite material tower |
| CN113954386A (en) * | 2021-10-14 | 2022-01-21 | 亨弗劳恩(江苏)复合材料研发有限公司 | Composite material part and preparation device and method thereof |
| CN113914698A (en) * | 2021-11-05 | 2022-01-11 | 合肥海银杆塔有限公司 | Thermoplastic composite material tower |
| CN115234155A (en) * | 2022-08-23 | 2022-10-25 | 国网山东省电力公司临沂供电公司 | Insulating ladder for power supply maintenance of composite material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577972C (en) * | 2008-07-02 | 2010-01-06 | 江苏省电力公司无锡供电公司 | Production method of high strength composite material electric pole |
| CN102261193B (en) * | 2011-06-10 | 2012-12-12 | 北京玻钢院复合材料有限公司 | Composite cross arm for power transmission line and preparation method thereof |
| CN202913752U (en) * | 2012-11-23 | 2013-05-01 | 沧州供电公司 | Flanged joint structure for composite pole tower |
| CN103061565B (en) * | 2013-01-25 | 2014-10-29 | 哈尔滨工业大学 | Method for manufacturing tapered tube made of glass fiber and carbon fiber hybrid composite materials |
| PL227920B1 (en) * | 2015-03-24 | 2018-01-31 | Alumast Spólka Akcyjna | Composite light pole |
| CN105625791A (en) * | 2016-03-04 | 2016-06-01 | 赵欣 | Coating type composite material tower and preparation method thereof |
-
2017
- 2017-10-27 CN CN201711025134.9A patent/CN107916820B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107916820A (en) | 2018-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107916820B (en) | Composite material tower for transmission line and preparation method thereof | |
| CN107740629B (en) | Composite material pole tower for carbon fiber pultrusion plate reinforced power transmission line and preparation method thereof | |
| CN201043360Y (en) | Composite-material telegraph pole | |
| CN103216041B (en) | Plane grid rib for structure reinforcement, mould and manufacturing method of plane grid rib | |
| CN111852154B (en) | High-strength composite material electric pole | |
| CN102022589B (en) | Method and device for preparing composite tube having axial fibers | |
| CN201950820U (en) | Preparing device for composite material pipe having longitudinal fibers | |
| CN207469874U (en) | A kind of carbon fiber pultruded panels enhance composite material pole tower used for transmission line | |
| CN2534296Y (en) | Fiber reinforced plastic electric wire pole | |
| CN113250517B (en) | Electric power tower composite structure and preparation method thereof | |
| CN202227764U (en) | Composite electric cross arm | |
| CN212219374U (en) | Resin material production line based on vertical heavy vertical stretching method | |
| NL2029892B1 (en) | Composite material production line and production method based on vertical gravity tensioning method | |
| CN111300848A (en) | Insulating pole tower internal mold mould based on vertical heavy vertical tension method | |
| CA3141580A1 (en) | Composite material production line and production method based on vertical gravity tensioning method | |
| CN111559096A (en) | Insulating tower production line bundling structure based on vertical heavy vertical tension method | |
| CN111271361A (en) | Fastening screw for vulcanizing machine, preparation method of fastening screw and vulcanizing machine | |
| CN219281081U (en) | FRP reinforced recombinant bamboo constraint bamboo-concrete combined column | |
| CN212603547U (en) | Insulating pole tower internal mold mould based on vertical heavy vertical tension method | |
| CN212422250U (en) | Insulating tower production line bundling structure based on vertical heavy vertical tension method | |
| CN213082438U (en) | Resin cloth winding device of insulating tower production line based on vertical heavy vertical stretching method | |
| CN212422244U (en) | Insulating pole tower mould based on vertical heavy vertical tension method | |
| CN213137880U (en) | Insulating tower core mold group based on vertical heavy vertical tension method | |
| CN212422246U (en) | Vertical hydraulic traction equipment | |
| CN213082437U (en) | Tensioning device of insulating tower production line based on vertical redraw method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |