CN213752150U - Special composite support insulator for outdoor cable terminal - Google Patents
Special composite support insulator for outdoor cable terminal Download PDFInfo
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- CN213752150U CN213752150U CN202023261197.4U CN202023261197U CN213752150U CN 213752150 U CN213752150 U CN 213752150U CN 202023261197 U CN202023261197 U CN 202023261197U CN 213752150 U CN213752150 U CN 213752150U
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- type hardware
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- outdoor cable
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Abstract
The utility model discloses a special composite supporting insulator for an outdoor cable terminal, which comprises a solid core rod; seat-type hardware fittings are respectively sleeved at two ends of the core rod, and the outer walls of the core rod and the seat-type hardware fittings are wrapped with silicon rubber umbrella skirts; the core rod is embedded into the inner concave cavity of the seat type hardware fitting, a screw hole is further formed in one side, opposite to the inner concave cavity, of the seat type hardware fitting, and a full-tooth bolt matched with the screw hole is arranged in the screw hole; a flat gasket, a spring pad and a fastening nut are sequentially arranged on the full-tooth bolt from one side close to the seat type hardware fitting to the outside; the composite support insulator is convenient to overhaul and replace, large in dry arc distance and creepage distance and good in insulating property.
Description
Technical Field
The utility model relates to an outdoor cable termination annex field especially relates to a special composite support insulator of outdoor cable termination.
Background
The composite insulator has the advantages of small volume, convenient maintenance, light weight, convenient installation, high mechanical strength, difficult breakage, excellent seismic performance, good pollution resistance, fast production period, high quality stability and the like. The method is widely applied to related products in the high-voltage electrical industry at present. The support insulator is an indispensable part in the installation of outdoor cable terminal, will bear the gravity of a whole set of cable terminal from mechanical properties to prevent that cable terminal from shaking and swaing, will insulate between a whole set of cable terminal and the ground from electrical properties, the most porcelain insulator or epoxy resin of adopting of present cable terminal manufacturing enterprise pours the piece as cable terminal's insulating support part, and these two kinds of products exist following not enoughly:
firstly, the method comprises the following steps: the manufacturing process of the porcelain insulator is complex, the qualification rate in the production process is relatively low, and the overall cost is high;
secondly, the method comprises the following steps: the porcelain insulator is heavy and inconvenient to transport and install;
thirdly, the method comprises the following steps: the porcelain insulator is a brittle material and is easy to break under stress in the transportation and installation processes;
fourthly: the traditional insulator fixing screw and the insulator are integrated, so that the maintenance and the replacement are inconvenient in the operation process, the whole cable terminal needs to be dismantled, and the labor and the time are wasted;
fifth, the method comprises the following steps: the traditional porcelain insulator and resin material insulator have short dry arc distance and small creepage distance due to cost factor, and the insulating property can not completely meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's shortcoming, providing an outdoor cable terminal special composite support insulator that overhauls to change convenience, dry arc distance and creepage distance are big, and insulating properties is good.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
a composite supporting insulator special for an outdoor cable terminal comprises a solid core rod; seat-type hardware fittings are respectively sleeved at two ends of the core rod, and the outer walls of the core rod and the seat-type hardware fittings are wrapped with silicon rubber umbrella skirts; the core rod is embedded into the inner concave cavity of the seat type hardware fitting, a screw hole is further formed in one side, opposite to the inner concave cavity, of the seat type hardware fitting, and a full-tooth bolt matched with the screw hole is arranged in the screw hole; and the full-tooth bolt is provided with a flat gasket, a spring pad and a fastening nut in sequence from one side close to the seat type hardware fitting to the outside.
Preferably, the core rod is a solid epoxy resin core rod, the core rod is made of glass fiber cloth epoxy resin, the core rod is of a solid structure, the integral drawing one-step forming process is adopted, and the core rod is good in insulating property, good in mechanical strength and excellent in compression resistance.
Preferably, the silicon rubber umbrella skirt comprises a plurality of large umbrella skirts and small umbrella skirts which are arranged at intervals, and most preferably 3 large umbrella skirts and 2 small umbrella skirts; the dry arc distance of the silicon rubber umbrella skirt is not less than 140mm, and the creepage distance exceeds 340 mm; the silicon rubber umbrella skirt is made of silicon rubber materials, and has the advantages of light weight, good insulating property, ageing resistance, ultraviolet resistance, good hydrophobicity and self-cleaning property.
Preferably, the outer diameter of the large umbrella skirt is 101-103mm, and most preferably 102 mm; the outer diameter of the small umbrella skirt is 87mm-89mm, and the most preferable is 88 mm.
Preferably, the seat type hardware tool, the full-tooth bolt, the flat gasket, the spring pad and the fastening nut are made of stainless steel or hot galvanizing materials.
Preferably, the seat-type hardware fitting is made of aluminum alloy.
Preferably, the two ends of the core rod are sleeved with seat-type hardware fittings, and the bending strength of the core rod is not less than 3KN after the outer wall of the core rod is wrapped by the silicon rubber umbrella skirt; the power frequency withstand voltage is not lower than 45kV/1 min; the lightning impulse withstand voltage of each of the positive polarity and the negative polarity for 10 times is not lower than 70 kV.
The utility model has the advantages that:
firstly, the method comprises the following steps: the product cost is obviously reduced, the production period of the product is shortened, and the delivery capacity is rapidly improved;
secondly, the method comprises the following steps: the split type transportation is realized, the field installation is convenient, the labor intensity of installation is reduced, and the installation time is saved;
thirdly, the method comprises the following steps: the maintenance and replacement are convenient and fast, the cable can be replaced in a non-power-off state, and the cable terminal does not need to be detached in the replacement process, and the cable terminal is saved by more than 6 hours compared with an integrated product.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 is a core rod, 2 is a seat type hardware fitting, 2.1 is an inner concave cavity, 2.2 is a screw hole, 3 is a silicon rubber umbrella skirt, 3.1 is a large umbrella skirt, 3.2 is a small umbrella skirt, 4 is a full-tooth bolt, 5 is a flat gasket, 6 is a spring cushion, and 7 is a fastening nut.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
A composite supporting insulator special for an outdoor cable terminal comprises a solid core rod 1; the two ends of the core rod 1 are respectively sleeved with the seat type hardware fittings 2, and the outer walls of the core rod 1 and the seat type hardware fittings 2 are wrapped with the silicon rubber umbrella skirt 3; the core rod 1 is embedded into the inner concave cavity 2.1 of the seat type hardware tool 2, a screw hole 2.2 is further formed in one side, opposite to the inner concave cavity 2.1, of the seat type hardware tool 2, and a full-tooth bolt 4 matched with the screw hole 2.2 is arranged in the screw hole 2.2; and the full-tooth bolt 4 is provided with a flat gasket 5, a spring pad 6 and a fastening nut 7 in sequence from one side close to the seat type hardware tool 2 to the outside.
Preferably, the core rod 1 is a solid epoxy resin core rod, the core rod 1 is made of glass fiber cloth epoxy resin, the core rod is of a solid structure, and the whole drawing one-step forming process is adopted, so that the insulating property is good, the mechanical strength is good, and the compression resistance is excellent.
Preferably, the silicon rubber umbrella skirt 3 comprises a plurality of large umbrella skirts 3.1 and small umbrella skirts 3.2 which are arranged at intervals, and most preferably 3 large umbrella skirts 3.1 and 2 small umbrella skirts 3.2; the dry arc distance of the silicon rubber umbrella skirt 3 is not less than 140mm, and the creepage distance exceeds 340 mm; the silicon rubber umbrella skirt 3 is made of silicon rubber materials, and has the advantages of light weight, good insulating property, ageing resistance, ultraviolet resistance, good hydrophobicity and self-cleaning property.
Preferably, the outer diameter of the large umbrella skirt 3.1 is 101-103mm, and most preferably 102 mm; the outer diameter of the small umbrella skirt 3.2 is 87mm-89mm, and the most preferable is 88 mm.
Preferably, the seat-type hardware 2, the all-tooth bolt 4, the flat gasket 5, the spring washer 6 and the fastening nut 7 are made of stainless steel or hot galvanizing materials.
Preferably, the seat-type hardware fitting 2 is made of an aluminum alloy material.
Preferably, the seat-type hardware fittings 2 are sleeved at two ends of the core rod 1, and the bending strength of the core rod is not less than 3KN after the outer wall of the core rod is wrapped by the silicon rubber umbrella skirt 3; the power frequency withstand voltage is not lower than 45kV/1 min; the lightning impulse withstand voltage of each of the positive polarity and the negative polarity for 10 times is not lower than 70 kV.
During transportation, the transportation can be carried out in a split mode, and the transportation cannot be damaged due to the material; when the core rod is transported to a site for installation, the core rod is pushed into the silicon rubber umbrella skirt 3, and then the two ends of the core rod are pushed into the seat-type hardware fittings 2 to be tightly propped; after the assembly is finished, the seat-type hardware tool 2 at the lower end is in surface contact with the top of the user installation platform according to the direction of the silicon rubber umbrella skirt 3, the full-tooth bolt 4 penetrates through an installation hole reserved in the user installation platform and then is connected with a screw hole 2.2 of the seat-type hardware tool 2, then the full-tooth bolt is sequentially sleeved with the flat gasket 5 and the spring gasket 6 in sequence, and finally the flat gasket and the spring gasket are locked by the fastening nut 7, so that the lower end fixation is finished.
The seat type hardware tool 2 at the upper end of the mandrel 1 is contacted with the bottom surface of a lower flange of a cable terminal or the bottom surface of a support bottom plate of the cable terminal, the full-tooth bolt 4 penetrates through a fixing hole on the bottom surface of the lower flange or a positioning hole on the support bottom plate and then is connected with a screw hole 2.2 of the seat type hardware tool 2, then is sequentially sleeved with a flat gasket 5 and a spring gasket 6 in sequence, and finally is locked by a fastening nut 7, so that the upper end is fixed; the whole composite support insulator is convenient to disassemble and assemble, and convenient and fast to overhaul and replace.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides a special composite support insulator of outdoor cable termination which characterized in that: comprising a solid core rod (1); seat-type fittings (2) are respectively sleeved at two ends of the core rod (1), and silicone rubber umbrella skirts (3) are wrapped on the outer walls of the core rod (1) and the seat-type fittings (2); the core rod (1) is embedded into an inner concave cavity (2.1) of the seat type hardware fitting (2), a screw hole (2.2) is further formed in one side, opposite to the inner concave cavity (2.1), of the seat type hardware fitting (2), and a full-tooth bolt (4) matched with the screw hole (2.2) is arranged in the screw hole (2.2); the full-tooth bolt (4) is provided with a flat gasket (5), a spring pad (6) and a fastening nut (7) from one side close to the seat type hardware fitting (2) to the outside in sequence.
2. The special composite supporting insulator for outdoor cable terminals according to claim 1, characterized in that: the core rod (1) is a solid epoxy resin core rod.
3. The special composite supporting insulator for outdoor cable terminals according to claim 1, characterized in that: the silicon rubber umbrella skirt (3) comprises a plurality of large umbrella skirts (3.1) and small umbrella skirts (3.2) which are arranged at intervals; the dry arc distance of the silicon rubber umbrella skirt (3) is not less than 140mm, and the creepage distance exceeds 340 mm.
4. The special composite supporting insulator for outdoor cable terminals according to claim 3, characterized in that: the outer diameter of the large umbrella skirt (3.1) is 101-103 mm; the outer diameter of the small umbrella skirt (3.2) is 87mm-89 mm.
5. The special composite supporting insulator for outdoor cable terminals according to claim 1, characterized in that: the seat type hardware (2), the full-tooth bolt (4), the flat gasket (5), the spring pad (6) and the fastening nut (7) are made of stainless steel or hot galvanizing materials.
6. The special composite supporting insulator for outdoor cable terminals according to claim 1, characterized in that: the seat type hardware fitting (2) is made of aluminum alloy.
7. The special composite supporting insulator for outdoor cable terminals according to claim 1, characterized in that: the two ends of the core rod (1) are sleeved with the seat type hardware fittings (2), and the bending strength of the core rod is not less than 3KN after the outer wall of the core rod is wrapped by the silicon rubber umbrella skirt (3); the power frequency withstand voltage is not lower than 45kV/1 min; the lightning impulse withstand voltage of each of the positive polarity and the negative polarity for 10 times is not lower than 70 kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023261197.4U CN213752150U (en) | 2020-12-30 | 2020-12-30 | Special composite support insulator for outdoor cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023261197.4U CN213752150U (en) | 2020-12-30 | 2020-12-30 | Special composite support insulator for outdoor cable terminal |
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| Publication Number | Publication Date |
|---|---|
| CN213752150U true CN213752150U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023261197.4U Active CN213752150U (en) | 2020-12-30 | 2020-12-30 | Special composite support insulator for outdoor cable terminal |
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| CN (1) | CN213752150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2798212C1 (en) * | 2022-12-22 | 2023-06-19 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Hybrid post insulator |
-
2020
- 2020-12-30 CN CN202023261197.4U patent/CN213752150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2798212C1 (en) * | 2022-12-22 | 2023-06-19 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Hybrid post insulator |
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