CN216287787U - Tension-resistant composite insulator - Google Patents
Tension-resistant composite insulator Download PDFInfo
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- CN216287787U CN216287787U CN202122858850.3U CN202122858850U CN216287787U CN 216287787 U CN216287787 U CN 216287787U CN 202122858850 U CN202122858850 U CN 202122858850U CN 216287787 U CN216287787 U CN 216287787U
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- core rod
- composite insulator
- mandrel
- ring
- umbrella
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- 239000012212 insulator Substances 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 239000003365 glass fiber Substances 0.000 claims description 13
- 239000013307 optical fiber Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 239000011152 fibreglass Substances 0.000 claims 1
- 208000025274 Lightning injury Diseases 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000009421 internal insulation Methods 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 208000010392 Bone Fractures Diseases 0.000 description 5
- 206010017076 Fracture Diseases 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a tension composite insulator, which comprises an annular connecting piece, a grounding end equalizing ring and a mandrel which are connected in sequence, wherein the outer surface of the mandrel is provided with a sheath, the sheath comprises a large umbrella and a small umbrella, and the large umbrella and the small umbrella are arranged in sequence; one end of the grounding end equalizing ring is provided with a semicircular ring structural part, and the other end of the grounding end equalizing ring is provided with a reinforcing part; the mechanical stress action can be effectively improved, and the risk of breakage accidents caused by the large strain composite insulator under small load is reduced; the umbrella sleeve has the advantages of attractive appearance, few interfaces, firm and seamless contact between the mandrel and the sheath, good internal insulation performance, avoidance of interface breakdown, and effective solving of the problems of mechanical stress damage of the mandrel and fracture accident risk caused by lightning stroke at present.
Description
Technical Field
The utility model belongs to the technical field of power transmission lines, and particularly relates to a strain composite insulator.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Tension insulators are important elements in the process of erecting power transmission lines, and bear tensile loads and compressive and bending loads due to galloping, vibration and the like of wires in the using process. The existing strain composite insulator has small rod diameter, larger elastic deformation of a core rod under the load of small bending, compression and the like, weak bending resistance and torsion resistance, large deformation under small load to cause fracture accident risk and influence on the safe operation of a line;
the rod diameter of a tension composite insulator used in the existing 110-plus 220kV power transmission line is small, the diameter of a core rod is 18mm, the thickness of a sheath is 3-3.5mm, the core rod has larger elastic deformation when being subjected to small loads such as bending and compression, the bending resistance and the torsion resistance are weak, the deformation under small loads is increased, the risk of fracture accidents is caused, and the safe operation of the line is influenced; and when the lightning stroke acts on the equalizing ring, the mandrel is easy to deform and damage, and the risk of breakage accidents is easy to occur due to the large deformation.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a tension composite insulator.
According to some embodiments, the utility model adopts the following technical scheme:
a strain composite insulator comprises an annular connecting piece, a grounding end grading ring and a mandrel which are sequentially connected, wherein a sheath is arranged on the outer surface of the mandrel and comprises a large umbrella and a small umbrella which are sequentially arranged according to the sequence of the large umbrella and the small umbrella; one end of the grounding end equalizing ring is provided with a semicircular ring structural member, and the other end of the grounding end equalizing ring is provided with a reinforcing member.
Further, the reinforcement is connected with the plug, the reinforcement includes annular member and rectangle piece, and the annular member cup joints through the fastener and installs on the plug, the side-mounting earthing terminal equalizer ring of annular member, one side-mounting rectangle piece of annular member.
Further, the annular piece is made of annular metal materials and is provided with mounting holes, the mounting holes are used for mounting fasteners, and the fasteners are used for tightly connecting the annular piece with the core rod.
Furthermore, the outer diameter of the large umbrella is 7-8 times of the diameter of the core rod, and the outer diameter of the small umbrella is 4-5 times of the diameter of the core rod; the distance between two adjacent umbrellas is 0.5-1 times of the diameter of the core rod.
Further, the tension composite insulator further comprises a high-voltage end equalizing ring, one end of the core rod is connected with the grounding equalizing ring, and the other end of the core rod is connected with the high-voltage end equalizing ring.
Furthermore, the grounding end equalizing ring and the high-voltage end equalizing ring are made of aluminum alloy materials.
Furthermore, the core rod is an epoxy resin glass fiber rod; the optical fiber is arranged in the core rod, and the sheath is arranged outside the core rod. The two end parts of the optical fiber respectively penetrate out of the hardware fittings inserted at the two end parts of the core rod, the core rod is formed by wrapping the optical fiber by epoxy resin glass fiber raw materials and casting, and the core rod is cast by matching the optical fiber with the epoxy resin glass fiber. And sealing rings are arranged at two ends of the core rod.
Compared with the prior art, the utility model has the beneficial effects that:
the composite insulator comprises an annular connecting piece, a grounding end equalizing ring and a mandrel which are sequentially connected, wherein a sheath is arranged on the outer surface of the mandrel and comprises large umbrellas and small umbrellas which are sequentially arranged in sequence; one end of the grounding end grading ring is provided with a semicircular ring structural part, and the other end of the grounding end grading ring is provided with a reinforcing part, so that the bending resistance and torsion resistance of the tension-resistant composite insulator are improved, the ultimate tensile load of the tension-resistant composite insulator is effectively improved, the load bearing capacity of compression, bending and other forms generated by galloping and vibration of a power transmission line is improved, the mechanical stress action can be effectively improved, and the risk of fracture accidents caused by the deformation and enlargement of the tension-resistant composite insulator under a small load is reduced; the umbrella sleeve has the advantages of attractive appearance, few interfaces, firm and seamless contact between the mandrel and the sheath, good internal insulation performance, avoidance of interface breakdown, and effective solving of the problems of mechanical stress damage of the mandrel and fracture accident risk caused by lightning stroke at present.
Advantages of additional aspects of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic structural view of a tension composite insulator according to the present invention;
FIG. 2 is a schematic view of the ground strap assembly of the present invention;
wherein: 1. an annular metal connector; 2. a seal ring; 3. a ground terminal grading ring; 4. a core rod; 5. a sheath; 6. a large umbrella; 7. a small umbrella; 8. a high-voltage end small equalizing ring; 31. a semicircular ring structural member; 32. a rectangular member; 33. an annular member.
The specific implementation mode is as follows:
the utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The first embodiment is as follows:
as shown in fig. 1, the embodiment provides a tension composite insulator, which includes an annular connecting member, a ground end grading ring and a mandrel, which are connected in sequence, wherein a sheath is installed on the outer surface of the mandrel, and the sheath includes a large umbrella and a small umbrella, which are arranged in sequence from one large umbrella to the other; one end of the grounding end equalizing ring is provided with a semicircular ring structural part, and the other end of the grounding end equalizing ring is provided with a reinforcing part; the semicircular structural part is used for preventing direct lightning, and the rectangular structural part is used for providing the structural strength of the core rod at the equalizing ring of the grounding end, so that the phenomenon that the structure deforms and cannot work normally due to lightning stroke is avoided.
As an implementation mode, the tension composite insulator further comprises a high-voltage end grading ring, wherein the high-voltage end grading ring is arranged at one end of the core rod and is opposite to the grounding end grading ring. And the high-voltage end grading ring and the grounding end grading ring have the same structure.
In one embodiment, the two ends of the mandrel are further provided with sealing rings, and the sealing rings are used for firmly contacting the mandrel with the sheath without a gap, so that the inner insulation performance is good, and the phenomenon of interface breakdown is avoided.
In one embodiment, the core rod is an epoxy resin glass fiber rod; the optical fiber is arranged in the core rod, the sheath is arranged outside the core rod, and the umbrella skirt is sleeved outside the sheath; the two end parts of the optical fiber respectively penetrate out of the hardware fittings inserted at the two end parts of the core rod, the core rod is formed by wrapping the optical fiber by epoxy resin glass fiber raw materials and pouring, and the core rod is poured by matching the optical fiber with the epoxy resin glass fiber, so that the problem of interface bonding between the shed sheath and the optical fiber and between the shed sheath and the core rod is solved, and the production difficulty is reduced.
In one embodiment, one end of the mandrel is connected with the ground grading ring, the other end of the mandrel is connected with the high-voltage end grading ring, and the mandrel is connected with the ground grading ring.
As an embodiment, the grounding end equalizing ring and the high-voltage end equalizing ring are made of aluminum alloy; one end of the grounding grading ring and one end of the high-voltage end grading ring are provided with semicircular ring structures, the semicircular ring structures are located on one side face of the mandril, and the semicircular ring structures are used for improving voltage distribution of the insulator string and preventing direct lightning. As an embodiment, earthing terminal equalizer ring still includes the reinforcement, is connected with the plug through the reinforcement, the reinforcement includes annular member and rectangle piece, and the annular member cup joints through the fastener and installs on the plug, the side-mounting earthing terminal equalizer ring of annular member, a side-mounting rectangle piece of annular member, the rectangle piece is installed on the plug and is located the relative side of semicircle ring structure, the reinforcement makes effectively prevent to puncture the plug through the rectangle piece of opposite flank when earthing equalizer ring bears the thunderbolt, lead to plug buckling deformation, the plug mechanical stress that effectively has solved present thunderbolt and lead to is impaired, the accident risk of breaking takes place.
In one embodiment, the annular member is made of an annular metal material and has mounting holes for mounting fasteners for fastening the annular member to the core rod. The end of the rectangular piece has an arc-shaped chamfer to avoid scratching an installer during installation, and the rectangular piece can be connected to one side of the end face of the annular piece in a welding manner.
In one embodiment, the annular metal connector 1 is an annular metal connector 1, and the annular metal connector 1 at the end is hot-galvanized.
In one embodiment, the outer diameter of the large umbrella is 7-8 times of the diameter of the core rod, and the outer diameter of the small umbrella is 4-5 times of the diameter of the core rod; the distance between two adjacent umbrellas is 0.5 to 1 time of the diameter of the core rod; the thickness of the sheath is 0.2-0.25 times of the diameter of the core rod. Specifically, the thickness of the sheath is 5mm, and the diameter of the epoxy resin glass fiber rod is 24 mm; the number of the large umbrella skirts is 11, the number of the small umbrella skirts is 10, the diameter of the large umbrella skirts is 170mm, the diameter of the small umbrella skirts is 135mm, the arrangement structure among the umbrella skirts is in a large-small form, and the production is carried out by adopting a production process of extruding, wrapping and penetrating the umbrella.
Specifically, fig. 1 is a preferred embodiment of the present invention, and the present invention will now be further described by referring to a 110kV strain composite insulator with a nominal structure height of 1240mm, in conjunction with the accompanying drawings.
According to the figure 1, the 110kV strain composite insulator comprises an annular metal connecting piece 1 positioned at the end part, a sealing ring 2 positioned at the end part of a core rod, a grading ring 3 at a grounding end, an epoxy resin glass fiber rod 4 positioned at the center, a sheath 5 covering the surface of the epoxy resin glass fiber rod, a large shed 6 on the surface of the sheath, a small shed 7 on the surface of the sheath and a small grading ring 8 at a high-voltage end; the annular metal connecting piece 1 at the end part is subjected to hot galvanizing treatment; the grounding end equalizing ring and the high-voltage end equalizing ring are made of aluminum alloy materials; the thickness of the sheath is 5mm, and the diameter of the epoxy resin glass fiber rod is 24 mm; the number of the large umbrella skirts is 11, the number of the small umbrella skirts is 10, the diameter of the large umbrella skirts is 170mm, the diameter of the small umbrella skirts is 135mm, the arrangement structure among the umbrella skirts is in a large-small form, and the production is carried out by adopting a production process of extruding, wrapping and penetrating the umbrella.
Compared with the existing core rod with the diameter of 18mm, the sheath with the thickness of 3-3.5mm is coated with the epoxy resin glass fiber rod with the diameter of 24mm, the diameter of the core rod is increased by 4mm, and the thickness of the sheath is increased by 1.5-2 mm.
Earthing terminal equalizer ring still includes the reinforcement, is connected with the plug through the reinforcement, the reinforcement includes annular member and rectangle piece, and the annular member cup joints through the fastener and installs on the plug, the side-mounting earthing terminal equalizer ring of annular member, a side-mounting rectangle piece of annular member, the rectangle piece is installed on the plug and is located the relative side of semicircle ring structure, the reinforcement makes effectively prevent to puncture the plug through the rectangle piece of opposite flank when earthing equalizer ring bears the thunderbolt, lead to plug buckling deformation, effectively solved the plug mechanical stress that present thunderbolt leads to impaired, the emergence accident risk.
The utility model improves the bending resistance and torsion resistance of the tension composite insulator, effectively improves the ultimate tensile load of the tension composite insulator, improves the load bearing capacity in the forms of compression, bending and the like generated by galloping and vibration of a power transmission line, can effectively improve the action of mechanical stress, and reduces the risk of fracture accidents caused by the large deformation of the tension composite insulator under small load; the umbrella cover has beautiful appearance, few interfaces, firm contact between the core rod and the sheath, no gap, good internal insulation performance and no interface breakdown.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art.
Claims (10)
1. A strain composite insulator is characterized by comprising an annular connecting piece, a grounding end equalizing ring and a mandrel which are sequentially connected, wherein a sheath is arranged on the outer surface of the mandrel and comprises large umbrellas and small umbrellas which are sequentially arranged according to the sequence of the large umbrellas and the small umbrellas; one end of the grounding end equalizing ring is provided with a semicircular ring structural member, and the other end of the grounding end equalizing ring is provided with a reinforcing member.
2. The tension composite insulator according to claim 1, wherein the reinforcing member is connected to the mandrel, the reinforcing member comprises an annular member and a rectangular member, the annular member is sleeved on the mandrel through a fastening member, the grounding end equalizing ring is installed on the side surface of the annular member, and the rectangular member is installed on one side of the annular member.
3. The strain composite insulator of claim 2, wherein said annular member is formed of an annular metallic material and has mounting holes therein for receiving fasteners for securing the annular member to the mandrel.
4. The strain composite insulator of claim 1, wherein the outer diameter of the large umbrella is 7-8 times the diameter of the core rod, and the outer diameter of the small umbrella is 4-5 times the diameter of the core rod; the distance between two adjacent umbrellas is 0.5 to 1 time of the diameter of the core rod; the thickness of the sheath is 0.2-0.25 times of the diameter of the core rod.
5. The tension composite insulator according to claim 1, wherein the tension composite insulator further comprises a high-voltage end grading ring, one end of the core rod is connected with the grounding grading ring, and the other end of the core rod is connected with the high-voltage end grading ring.
6. The tension composite insulator according to claim 5, wherein the ground side grading ring and the high voltage side grading ring are made of aluminum alloy.
7. The tension composite insulator of claim 1, wherein said core rod is an epoxy fiberglass rod.
8. The strain composite insulator of claim 7, wherein said core rod has an optical fiber disposed therein and a jacket disposed outside said core rod.
9. The tension composite insulator of claim 8, wherein the two ends of the optical fiber respectively penetrate through the fittings inserted at the two ends of the core rod, the core rod is formed by wrapping the optical fiber with epoxy resin glass fiber raw material and casting, and the core rod is cast by matching the optical fiber with the epoxy resin glass fiber.
10. The tension composite insulator according to claim 1, wherein sealing rings are further provided at both ends of the core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858850.3U CN216287787U (en) | 2021-11-19 | 2021-11-19 | Tension-resistant composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858850.3U CN216287787U (en) | 2021-11-19 | 2021-11-19 | Tension-resistant composite insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216287787U true CN216287787U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122858850.3U Active CN216287787U (en) | 2021-11-19 | 2021-11-19 | Tension-resistant composite insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216287787U (en) |
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2021
- 2021-11-19 CN CN202122858850.3U patent/CN216287787U/en active Active
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