CN113635571A - Basalt fiber reinforced composite insulating cross arm device and preparation method thereof - Google Patents
Basalt fiber reinforced composite insulating cross arm device and preparation method thereof Download PDFInfo
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- CN113635571A CN113635571A CN202111049526.5A CN202111049526A CN113635571A CN 113635571 A CN113635571 A CN 113635571A CN 202111049526 A CN202111049526 A CN 202111049526A CN 113635571 A CN113635571 A CN 113635571A
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- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 148
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 105
- 239000007822 coupling agent Substances 0.000 claims abstract description 23
- 238000004381 surface treatment Methods 0.000 claims abstract description 21
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims description 41
- 229920000647 polyepoxide Polymers 0.000 claims description 41
- 239000011324 bead Substances 0.000 claims description 30
- 239000011521 glass Substances 0.000 claims description 30
- 229920002379 silicone rubber Polymers 0.000 claims description 27
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- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
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- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
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- Insulating Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to a basalt fiber reinforced composite insulating cross arm device and a preparation method thereof, wherein the composite insulating cross arm device comprises: the insulating core rod made of basalt fiber composite material has the advantages of high mechanical strength, strong weather resistance, excellent electrical insulation and the like, and an inner lining layer made of SMC composite material and an outer lining layer made of SMC composite material are respectively arranged on the inner surface and the outer surface of the hollow basalt fiber pipe body, so that the mechanical strength, the electrical insulation and the weather resistance of the composite insulating cross arm are further enhanced, the weight of the composite insulating cross arm is reduced, and the stability is high; the gamma-aminopropyltriethoxysilane is used as a coupling agent to perform surface treatment on the insulating core rod, and the gamma-aminopropyltriethoxysilane is used as the coupling agent to effectively improve the bonding strength of basalt fibers and a polymer system, further enhance the mechanical strength, the electrical insulation property and the weather resistance of the composite insulating cross arm, and have high stability.
Description
Technical Field
The invention relates to the technical field of power transmission line matched components, in particular to a basalt fiber reinforced composite insulating cross arm device and a preparation method thereof.
Background
In the field of electric power facilities, a composite insulating cross arm for a transmission line is an important matched structural member, one end of the composite insulating cross arm is connected with a transmission tower through fixing equipment such as hardware fittings, and the other end of the composite insulating cross arm is connected with a transmission lead. The silicon rubber umbrella skirt on the insulating cross arm has the functions of increasing the creepage distance and improving the insulating level of the composite cross arm.
The cross arm comprises an early fuse wire cross arm, a solid core rod composite insulating cross arm and a hollow filling type composite insulating cross arm. The early fuse wire insulation cross arm is made of wood or iron, but the problems of insulation level reduction, wide power transmission corridor, large influence of wind swing and the like can occur in the long-term operation process. The hollow filling type composite insulating cross arm mainly comprises a hollow core tube, a filling material and an umbrella skirt, is small in mass and convenient to transport, has the difficult problems of neck clamping such as the filling material is not too close, and cannot meet the requirement of the inner insulating sealing performance of the hollow filling type composite insulating cross arm when being used outdoors. At present, solid core rods are mostly adopted in composite insulating cross arms with larger market share. The solid core rod is prepared from glass fiber and matrix resin through a pultrusion process. The composite cross arm of the glass fiber core rod is limited by the defects of mechanical properties, high temperature resistance and corrosion resistance of glass fibers, and the glass fiber core rod composite cross arm is easy to cause the occurrence of grounding short circuit faults due to the fact that the end part of the glass fiber core rod composite cross arm is often subjected to overlarge displacement when bearing load, and is short in service life in a damp and hot environment or an acidic environment.
Basalt fiber is listed as a green strategic material because it is green and environmentally friendly in the production process. The prior researches show that the basalt fiber has higher elastic modulus and breaking strength compared with the glass fiber, can maintain the stability of performance at 700 ℃, has smaller strength loss amount in an acid environment or an alkaline environment, and is a better glass fiber substitute material. The basalt fiber is adopted to replace the glass fiber to prepare the composite insulating cross arm solid core rod, so that the defects of large deflection, low service life in a specific environment and the like caused by the glass fiber can be avoided, and the popularization and the application of the composite insulating cross arm in severe environment areas such as heavily polluted areas, mountain areas, coastal areas and the like are facilitated. At present, the technology for preparing the composite insulating cross arm solid core rod by adopting basalt fibers to replace glass fibers is continuously updated, and the mechanical strength, the electrical insulating property and the weather resistance of the composite insulating cross arm solid core rod are still to be further improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a basalt fiber reinforced composite insulating cross arm device which not only has excellent weather resistance and good mechanical property and electrical insulating property, but also can reduce the cross section area, lighten the whole weight of the cross arm and reduce the cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the insulating core rod, the insulating outer sleeve and the hardware fitting device; an insulating outer sleeve is fixedly arranged on the outer peripheral wall of the insulating core rod in the length direction, and hardware fittings are respectively arranged at two ends of the insulating outer sleeve; the hardware fitting device is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the preparation method of the insulating core rod comprises the following steps: 1) preparing a hollow basalt fiber pipe body; 2) arranging an inner liner layer made of SMC composite material on the inner surface of the hollow basalt fiber pipe body; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) and arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body to obtain the insulating core rod.
Further, the insulating outer sleeve is made of high-temperature vulcanized silicone rubber.
Furthermore, the insulating overcoat is the umbrella skirt structure, the insulating overcoat has a plurality ofly, and evenly distributed along the length direction of insulating plug.
Further, the preparation method of the insulating core rod comprises the following steps: 1) preparing a hollow basalt fiber pipe body with the wall thickness of 6-8 mm; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.1-1.3 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.5-1.8 mm; and obtaining the insulating core rod.
Further, the basalt fiber pipe body is of a square pipe structure.
Furthermore, glass beads are added into the epoxy resin filled in the hollow basalt fiber pipe body, and the adding amount of the glass beads is 1.5-1.8% of the weight of the epoxy resin.
Furthermore, the particle size of the glass beads is 25-35 microns.
The invention also provides a preparation method of the basalt fiber reinforced composite insulating cross arm device, which comprises the following steps:
(1) preparing an insulating core rod: 1) preparing a hollow basalt fiber pipe body; 2) arranging an inner liner layer made of SMC composite material on the inner surface of the hollow basalt fiber pipe body; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body to obtain the insulating core rod;
(2) surface treatment: carrying out surface treatment on the insulating core rod by using gamma-aminopropyltriethoxysilane as a coupling agent to obtain a treated insulating core rod;
(3) connecting a hardware fitting: respectively arranging hardware fittings at two ends of the treated insulating core rod through a hardware fitting crimping machine to obtain the insulating core rod with the hardware fittings;
(4) connecting an insulating outer sleeve: and (3) placing the insulating core rod with the hardware fitting in silicon rubber injection equipment, and pouring to ensure that an insulating outer sleeve is fixedly arranged on the outer peripheral wall of the insulating core rod in the length direction, thus obtaining the composite insulating cross arm device.
Further, in the step (2), gamma-aminopropyltriethoxysilane is used as a coupling agent and directly sprayed on the inner surface and the outer surface of the insulating core rod, and the insulating core rod is subjected to surface treatment to obtain the treated insulating core rod.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the basalt fiber reinforced composite insulating cross arm device has the advantages of high mechanical strength, strong weather resistance, excellent electrical insulation and the like because the composite insulating cross arm is made of the insulating core rod made of the basalt fiber composite material, and an inner lining layer made of an SMC composite material and an outer lining layer made of an SMC composite material are respectively arranged on the inner surface and the outer surface of a hollow basalt fiber pipe body, so that the mechanical strength, the electrical insulation and the weather resistance of the composite insulating cross arm are further enhanced, the weight of the composite insulating cross arm is reduced, and the composite insulating cross arm device is strong in practicability and high in stability.
According to the basalt fiber reinforced composite insulating cross arm device, the cross section of the insulating core rod is rectangular, and the composite cross arm insulating core rod has the advantages of small cross section area, light overall weight of the composite cross arm, high specific strength and the like on the premise of meeting the mechanical strength of a line; the gamma-aminopropyltriethoxysilane is used as a coupling agent to carry out surface treatment on the insulating core rod, and the gamma-aminopropyltriethoxysilane is used as the coupling agent to effectively improve the bonding strength of basalt fibers and a polymer system, so that the mechanical strength, the electrical insulation property and the weather resistance of the composite insulating cross arm are further enhanced, and the composite insulating cross arm is high in practicability and stability.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a perspective view of the composite insulated crossarm apparatus of the present invention;
fig. 2 is a schematic structural diagram of the composite insulating cross arm device of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, fig. 1 is a perspective view of a basalt fiber reinforced composite insulating cross arm device according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a basalt fiber reinforced composite insulating cross arm device according to the invention.
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component; more specifically, one end of the insulating core rod 1 is provided with a hardware fitting for connecting with a hoop of a tower, and the other end of the insulating core rod 1 is fixedly provided with a wire hardware fitting for hanging a transmission wire;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
the preparation method of the insulating core rod 1 comprises the following steps: 1) preparing a hollow basalt fiber pipe body with the wall thickness of 6-8 mm, wherein the basalt fiber pipe body is of a square pipe structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.1-1.3 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.5-1.8% of the weight of the epoxy resin, and the particle size of the glass beads is 25-35 microns; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.5-1.8 mm; thus obtaining the insulating core rod 1.
Example 1
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 6 mm, wherein the basalt fiber tube body is of a square tube structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.1 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.5% of the weight of the epoxy resin, and the particle size of the glass beads is 25 microns; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.5 mm; obtaining the insulating core rod 1;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 2
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 8 mm, wherein the basalt fiber tube body is of a square tube structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.3 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.8% of the weight of the epoxy resin, and the particle size of the glass beads is 35 microns; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.8 mm; obtaining the insulating core rod 1;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 3
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 7 mm, wherein the basalt fiber tube body is of a square tube structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.2 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.6% of the weight of the epoxy resin, and the particle size of the glass beads is 30 microns; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.6 mm; obtaining the insulating core rod 1;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 4
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 7 mm, wherein the basalt fiber tube body is of a square tube structure; 2) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.6% of the weight of the epoxy resin, and the particle size of the glass beads is 30 microns; 3) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.6 mm; obtaining the insulating core rod 1;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 5
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 7 mm, wherein the basalt fiber tube body is of a square tube structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.2 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.6% of the weight of the epoxy resin, and the particle size of the glass beads is 30 microns, so that the insulating core rod 1 is obtained;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 6
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 7 mm, wherein the basalt fiber tube body is of a square tube structure; 2) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.6% of the weight of the epoxy resin, and the particle size of the glass beads is 30 microns, so that the insulating core rod 1 is obtained;
(2) surface treatment: using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod, and carrying out surface treatment on the insulating core rod to obtain a treated insulating core rod;
(3) connecting a hardware fitting: placing the treated insulating core rod in a groove position of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(4) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Example 7
The utility model provides a basalt fiber reinforced composite insulating cross arm device, composite insulating cross arm device includes: the device comprises an insulation core rod 1, an insulation outer sleeve 2 and a hardware fitting device 3; an insulating outer sleeve 2 is fixedly arranged on the outer peripheral wall of the insulating core rod 1 in the length direction, and two ends of the insulating outer sleeve are respectively provided with a hardware fitting device 3; the hardware fitting device 3 is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the insulating outer sleeve 2 is made of high-temperature vulcanized silicone rubber, the insulating outer sleeve 2 is of an umbrella skirt structure, and a plurality of insulating outer sleeves 2 are uniformly distributed along the length direction of the insulating core rod 1;
a preparation method of a basalt fiber reinforced composite insulating cross arm device comprises the following steps:
(1) preparing an insulating core rod: 1) stirring epoxy resin, a curing agent, an accelerator, a flame retardant, an internal mold release agent and a pigment according to a certain proportion, pouring the mixture into an impregnation tank, leading out basalt fibers from a creel, impregnating the basalt fibers in the impregnation tank, feeding the basalt fibers into a core rod die, and performing pultrusion and segmented cutting by a tractor and a cutting machine to prepare a hollow basalt fiber tube body with the wall thickness of 7 mm, wherein the basalt fiber tube body is of a square tube structure; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.2 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain the filled basalt fiber pipe body, wherein glass beads are also added into the epoxy resin, the addition amount of the glass beads is 1.6% of the weight of the epoxy resin, and the particle size of the glass beads is 30 microns; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.6 mm; obtaining the insulating core rod 1;
(2) connecting a hardware fitting: placing the insulating core rod 1 in a trench of a hardware crimping machine, and respectively arranging hardware devices at two ends of the treated insulating core rod through the hardware crimping machine to obtain the insulating core rod with hardware;
(3) connecting an insulating outer sleeve: cleaning the surface of an insulating core rod with a hardware fitting, coating an interface reinforcing coating, placing the insulating core rod in silicon rubber injection equipment, injecting a uniformly mixed high-temperature vulcanized silicon rubber material to form a casting umbrella skirt to wrap the insulating core rod, and fixedly arranging an insulating outer sleeve on the outer peripheral wall of the insulating core rod in the length direction to obtain the composite insulating cross arm device.
Verifying the electrical performance, mechanical performance and weather resistance of the composite insulating cross arm device prepared in the above embodiments 1 to 7, specifically, putting the composite insulating cross arm device prepared in the embodiments 1 to 7 into a composite insulating cross arm aging test system, building a composite insulating cross arm simulation environment by using different functional modules in a closed space and assisting with devices of a cement pole frame, a metal hoop, a metal connecting rod, an eccentric motor, an insulator and a spring, and effectively simulating complex environments such as rain, salt fog, ultraviolet illumination, temperature change and the like in practical application by combining units capable of providing various environmental factors, and estimating the electrical performance, mechanical performance and weather resistance of the composite insulating cross arm according to parameters such as strain condition, leakage current, partial discharge and temperature of the composite insulating cross arm measured in real time in the test process, Mechanical properties and weather resistance;
the aging test result of the composite insulating cross arm shows that the electrical performance, the mechanical performance and the weather resistance of the composite insulating cross arm devices prepared in the embodiments 1 to 3 are obviously superior to those of the composite insulating cross arm devices prepared in the embodiments 4 to 7; therefore, the basalt fiber reinforced composite insulating cross arm device and the preparation method thereof have the advantages that the composite insulating cross arm adopts the insulating core rod made of the basalt fiber composite material, the mechanical strength is high, the weather resistance is high, the electric insulating property is excellent, and the like, the inner lining layer made of the SMC composite material and the outer lining layer made of the SMC composite material are respectively arranged on the inner surface and the outer surface of the hollow basalt fiber pipe body, the mechanical strength, the electric insulating property and the weather resistance of the composite insulating cross arm are further enhanced, the weight of the composite insulating cross arm is reduced, the practicability is high, and the stability is high; the gamma-aminopropyltriethoxysilane is used as a coupling agent to carry out surface treatment on the insulating core rod, and the gamma-aminopropyltriethoxysilane is used as the coupling agent to effectively improve the bonding strength of the basalt fiber and polymer system, so that the mechanical strength, the electrical insulation property and the weather resistance of the composite insulating cross arm are further enhanced.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a basalt fiber reinforced composite insulating cross arm device which characterized in that, composite insulating cross arm device includes: the insulating core rod, the insulating outer sleeve and the hardware fitting device; an insulating outer sleeve is fixedly arranged on the outer peripheral wall of the insulating core rod in the length direction, and hardware fittings are respectively arranged at two ends of the insulating outer sleeve; the hardware fitting device is used for fixing the composite insulating cross arm and the power transmission and transformation equipment component;
the preparation method of the insulating core rod comprises the following steps: 1) preparing a hollow basalt fiber pipe body; 2) arranging an inner liner layer made of SMC composite material on the inner surface of the hollow basalt fiber pipe body; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) and arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body to obtain the insulating core rod.
2. The basalt fiber reinforced composite insulating cross arm assembly of claim 1, wherein the insulating jacket is made of high temperature vulcanized silicone rubber.
3. The basalt fiber reinforced composite insulating cross arm device according to claim 1, wherein the insulating coat is of a shed structure, and the insulating coat is provided with a plurality of insulating coats which are uniformly distributed along the length direction of the insulating core rod.
4. The basalt fiber reinforced composite insulating cross arm device according to claim 1, wherein the preparation method of the insulating core rod comprises the following steps: 1) preparing a hollow basalt fiber pipe body with the wall thickness of 6-8 mm; 2) arranging an inner liner made of SMC composite material on the inner surface of the hollow basalt fiber pipe body, wherein the thickness of the inner liner is 1.1-1.3 mm; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body, wherein the thickness of the outer lining layer is 1.5-1.8 mm; and obtaining the insulating core rod.
5. The basalt fiber reinforced composite insulating cross arm apparatus of claim 1, wherein the basalt fiber pipe body is a square tube structure.
6. The basalt fiber reinforced composite insulating cross arm device according to claim 1, wherein glass beads are further added to the epoxy resin filled in the hollow basalt fiber tube body, and the addition amount of the glass beads is 1.5-1.8% of the weight of the epoxy resin.
7. The basalt fiber reinforced composite insulating cross arm device according to claim 6, wherein the glass beads have a particle size of 25 to 35 micrometers.
8. The preparation method of the basalt fiber reinforced composite insulating cross arm device according to claim 1, characterized by comprising the following steps:
(1) preparing an insulating core rod: 1) preparing a hollow basalt fiber pipe body; 2) arranging an inner liner layer made of SMC composite material on the inner surface of the hollow basalt fiber pipe body; 3) filling epoxy resin in the hollow basalt fiber pipe body to obtain a filled basalt fiber pipe body; 4) arranging an outer lining layer made of SMC composite material on the outer surface of the filled basalt fiber pipe body to obtain the insulating core rod;
(2) surface treatment: carrying out surface treatment on the insulating core rod by using gamma-aminopropyltriethoxysilane as a coupling agent to obtain a treated insulating core rod;
(3) connecting a hardware fitting: respectively arranging hardware fittings at two ends of the treated insulating core rod through a hardware fitting crimping machine to obtain the insulating core rod with the hardware fittings;
(4) connecting an insulating outer sleeve: and (3) placing the insulating core rod with the hardware fitting in silicon rubber injection equipment, and pouring to ensure that an insulating outer sleeve is fixedly arranged on the outer peripheral wall of the insulating core rod in the length direction, thus obtaining the composite insulating cross arm device.
9. The preparation method of the basalt fiber reinforced composite insulating cross arm device according to claim 8, wherein in the step (2), the insulating core rod is subjected to surface treatment by using gamma-aminopropyltriethoxysilane as a coupling agent and directly spraying the coupling agent on the inner surface and the outer surface of the insulating core rod to obtain the treated insulating core rod.
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Application publication date: 20211112 |