CN109065292B - Full-insulation protective needle insulator and assembly method thereof - Google Patents
Full-insulation protective needle insulator and assembly method thereof Download PDFInfo
- Publication number
- CN109065292B CN109065292B CN201810921344.4A CN201810921344A CN109065292B CN 109065292 B CN109065292 B CN 109065292B CN 201810921344 A CN201810921344 A CN 201810921344A CN 109065292 B CN109065292 B CN 109065292B
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- screw rod
- insulator
- core body
- insulation
- connecting piece
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- 239000012212 insulator Substances 0.000 title claims abstract description 56
- 238000009413 insulation Methods 0.000 title claims abstract description 39
- 230000001681 protective effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 9
- 229920002379 silicone rubber Polymers 0.000 claims description 9
- 239000004945 silicone rubber Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 11
- 239000004412 Bulk moulding compound Substances 0.000 description 8
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000005341 toughened glass Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012770 industrial material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/20—Pin insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
Landscapes
- Insulators (AREA)
Abstract
The invention discloses a full-insulation protective needle insulator and an assembly method thereof, wherein the insulator comprises a core body, an insulation sheath and a screw rod, the insulation sheath is covered outside the core body, an umbrella skirt is arranged on the insulation sheath, and the umbrella skirt and the insulation sheath are of an integrated structure; an assembly hole is formed in the center of the lower part of the core body, a tubular connecting piece with internal threads is fixedly sleeved in the assembly hole, external threads matched with the internal threads are formed on the outer wall of the screw rod, and the upper part of the screw rod is mounted with the tubular connecting piece in a threaded fit manner; a limiting end is fixedly arranged at the bottom of the screw rod; the screw rod is sleeved with a nut used for fixing the screw rod on the cross arm. The full-insulation protective needle insulator has the advantages of good insulation performance, convenience and firmness in installation, stable structure, high bending strength, low cost and safety and reliability.
Description
Technical Field
The invention relates to the technical field of insulator equipment, in particular to a full-insulation protective needle insulator and an assembly method thereof.
Background
Insulators are devices mounted between conductors of different potential or between a conductor and a ground potential member, capable of withstanding voltage and mechanical stress. The insulating control is a special insulating control and can play an important role in overhead transmission lines. According to the material classification, the insulator comprises a porcelain insulator, a toughened glass insulator, a silicon rubber composite insulator and the like, and the porcelain insulator has the earliest application time, but the performance of the porcelain insulator can be rapidly reduced under the pollution and humidity conditions, and the line pollution flashover accident can be easily caused; the toughened glass insulator has the main advantages of high mechanical strength, zero value self-explosion, reduced operation workload, better arc resistance and slower aging process than porcelain. The method has the defects that the self-riot rate is high, and the glass fragments which are damaged and scattered by the impact of external force are easy to affect cultivation.
The silicon rubber composite insulator is generally composed of a core rod and a basic insulator which is made of silicon rubber, has higher bending resistance, impact resistance, shock resistance and explosion resistance, has the advantages of good pollution flashover performance, light weight, small size, low price, basically maintenance-free operation, small corona, small electromagnetic interference and the like, and is an ideal updated product of the traditional toughened glass insulator. The needle insulator with the stitch needle cap is used in large quantities at home and abroad at present, the needle insulator with the stitch needle cap made of metal is high in cost, and particularly the composite needle insulator with the high bending resistance requirement is higher in cost, and the needle insulator is fragile and easy to have insulation failure.
The needle insulator used at present is fixed on angle steel by using a nut up and down respectively when being installed, and the lower nut can vibrate and fall off when running for a long time, so that the insulator is in a string falling accident.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fully insulated protective pin insulator with good bending strength and insulating property and more firm installation and an assembly method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
the all-insulation protective needle insulator comprises a core body, an insulation sheath and a screw rod, wherein the insulation sheath is covered outside the core body, an umbrella skirt is arranged on the insulation sheath, and the umbrella skirt and the insulation sheath are of an integrated structure;
An assembly hole is formed in the center of the lower part of the core body, a tubular connecting piece with internal threads is fixedly sleeved in the assembly hole, external threads matched with the internal threads are formed on the outer wall of the screw rod, and the upper part of the screw rod is installed with the tubular connecting piece in a threaded fit manner; the bottom of the screw rod is fixedly provided with a limiting end head, and the screw rod is sleeved with a nut for fixing the screw rod on the cross arm.
In the technical scheme, the structure that the insulating sheath is sleeved outside the core body is adopted, so that the use of metal parts is reduced, the cost can be reduced, the discharge gap between the wire and the cross arm can be increased, and the possibility of discharging the high-voltage wire in severe weather is effectively reduced. The screw rod and the core body are in threaded connection through the embedded tubular connecting piece, and the embedded tubular connecting piece can greatly improve the bending strength of the insulator and is convenient to install. The embedded tubular connecting piece and the upper end and the lower end of the screw rod are both provided with passivation ends, so that the discharge of the lead to the tip can be effectively prevented. The screw (lower hardware) is embedded and connected in the core body, so that the insulation performance can be effectively improved, the mechanical strength is improved, and the product cost is reduced. The lower end of the screw rod is provided with a limiting end head to replace the lower nut, so that the insulator is ensured not to fall down due to loosening of the lower nut.
Preferably, the limiting end and the screw are of an integrated structure.
Preferably, the width of the limiting end head is larger than the diameter of the screw rod and larger than the diameter of the mounting hole on the cross arm for mounting the insulator.
Preferably, the core is integrally cast of DMC material. DMC material Dough molding compounds, i.e., bulk molding compound, is a dough-like prepreg formed by thoroughly mixing GF (chopped glass fibers), UP (unsaturated resin), MD (filler) and various additives. The bulk molding compound has excellent electrical performance, mechanical performance, heat resistance and chemical corrosion resistance, can meet the requirements of various products on performance, and is suitable for various molding processes. The core body is integrally cast by adopting DMC materials, so that the use of an upper hardware fitting (needle cap) is omitted, and the insulation gap and the bending strength can be effectively improved.
Preferably, the inclination angle of the umbrella skirt is more than or equal to 5 degrees. The umbrella skirt which is obliquely arranged can reduce dust accumulation, natural wind can easily clean the dust accumulation on the umbrella skirt, and the self-cleaning capability is strong.
Preferably, the umbrella skirt is vertically arranged in parallel, wherein the diameter of the middle umbrella skirt is smaller than that of the upper umbrella skirt and the lower umbrella skirt, so that the voltage bridging gap can be increased, and the insulation performance is improved.
Preferably, the insulating sheath is made of silicone rubber. The external insulation is made of silicon rubber material, so that the full insulation performance of the insulator can be ensured.
Preferably, the thickness of the insulating sheath is more than or equal to 5mm.
The invention also relates to an assembly method of the all-insulation protective needle insulator, which comprises the following steps:
(1) The upper end of the screw rod passes through a mounting hole on the cross arm, and the nut is sleeved on the screw rod by the rotation of the upper end of the screw rod, so that the screw rod is primarily fixed on the cross arm;
(2) The method comprises the steps that a core body with an insulating sheath is arranged on the upper part of a screw rod, and the upper part of the screw rod and a tubular connecting piece on the core body are tightly arranged together through threads;
(3) After the angle of the insulator is adjusted to a proper position, the nut is fastened, and then the installation is completed.
After the full-insulation protective needle insulator is installed, the insulator cannot fall off even if the long-term conductor breeze vibration influence is carried out, but only becomes more and more tight, so that the insulator is fastened and stably installed.
The invention has the beneficial effects that:
according to the full-insulation protective needle insulator, the insulating sheath is sleeved outside the core body, the embedded tubular connecting piece is arranged in the core body, and the screw rod is in threaded connection with the tubular connecting piece, so that the bending strength of the insulator can be greatly improved; the embedded tubular connecting piece and the upper end and the lower end of the screw rod are both provided with passivation ends, so that the discharge of the lead to the tip can be effectively prevented; the use of metal parts is reduced, the cost can be reduced, the discharge gap between the wire and the cross arm can be increased, and the possibility of discharging the high-voltage wire in severe weather is effectively reduced; the lower end of the screw rod is provided with the limiting end head, so that the problem that the insulator falls off from the cross arm easily due to the fact that the lower end is connected by adopting a nut can be avoided, and the insulator is more firmly installed. The core body is integrally cast by DMC material, so that the use of an upper hardware fitting (needle cap) is omitted, and the bending strength is met. The outer insulating sheath is made of silicone rubber to realize full-insulating protection, so that the inner core body can be prevented from being wetted, and the insulator whole body has the characteristics of stain resistance, self cleaning, hydrophobicity and the like of the silicone rubber, and long-term reliable operation of products is ensured.
The full-insulation protective needle insulator has the advantages of good insulation performance, convenience and firmness in installation, stable structure, high bending strength, low cost and safety and reliability.
Drawings
FIG. 1 is a schematic diagram of the structure of a fully insulated protective pin insulator of the present invention;
FIG. 2 is a schematic diagram of the structure of the fully insulated protective pin insulator of the present invention after installation;
reference numerals in the drawings: 1 is a core body, 2 is an insulating sheath, 3 is a screw rod, 4 is an umbrella skirt, 5 is a tubular connecting piece, 6 is a limiting end, 7 is a nut, and 8 is a cross arm.
Detailed Description
The following examples are given to illustrate the invention in detail, but are not intended to limit the scope of the invention in any way. The equipment elements referred to in the following examples are conventional equipment elements unless otherwise specified; the industrial materials are commercially available conventional industrial materials unless otherwise specified.
Example 1: referring to fig. 1, the full-insulation protection needle insulator comprises a core body 1, an insulation sheath 2 and a screw rod 3, wherein the core body 1 is formed by integrally casting DMC materials, the insulation sheath 2 is covered outside the core body 1, an umbrella skirt 4 is arranged on the insulation sheath 2, the umbrella skirt 4 and the insulation sheath 2 are of an integrated structure, the inclination angle of the umbrella skirt 4 is more than or equal to 5 degrees, the insulation sheath 2 is made of silicone rubber, and the thickness of the insulation sheath 2 is more than or equal to 5mm. In this embodiment, the umbrella skirt 4 is vertically arranged in parallel, wherein the diameter of the middle umbrella skirt is smaller than that of the upper and lower umbrella skirts.
An assembly hole is formed in the center of the lower part of the core body 1, a tubular connecting piece 5 with internal threads is fixedly sleeved in the assembly hole, external threads matched with the internal threads are formed on the outer wall of the screw rod 3, and the upper part of the screw rod 3 is mounted with the tubular connecting piece 5 through threaded fit; a limiting end head 6 is fixedly arranged at the bottom of the screw 3; the limiting end head 6 and the screw rod 3 are of an integrated structure, and the width of the limiting end head 6 is larger than the diameter of the screw rod 3 and larger than the diameter of a mounting hole on a cross arm 8 for mounting an insulator; the screw 3 is sleeved with a nut 7 for fixing the screw 3 on the cross arm.
Example 2: the method for assembling the all-insulation protective pin insulator in embodiment 1, see fig. 2, comprises the following steps:
(1) The upper end of the screw rod 3 passes through a mounting hole on the cross arm 8, and the nut 7 is sleeved on the screw rod 3 by the rotation of the upper end of the screw rod 3, so that the screw rod 3 is primarily fixed on the cross arm 8;
(2) The core body 1 with the insulating sheath 2 is arranged at the upper part of the screw rod 3, and the upper part of the screw rod 3 and the tubular connecting piece 5 on the core body 1 are fastened together through threads;
(3) After adjusting the angle of the insulator to a proper position, the nut 7 is fastened, and the installation is completed.
The full-insulation protective needle insulator can well meet the running requirement of a 10-22kV line, the damage bending strength is greater than 8kN, and the higher damage bending load can be realized by increasing the diameter of a core body, so that the requirement of 5kN in China is far higher.
While the invention has been described with reference to the embodiments, those skilled in the art will understand that various specific parameters in the above embodiments may be changed without departing from the spirit of the invention, and thus a plurality of specific embodiments are common variation ranges of the invention, and will not be described in detail herein.
Claims (6)
1. The full-insulation protective needle insulator is characterized by comprising a core body, an insulation sheath and a screw rod, wherein the insulation sheath is covered outside the core body, an umbrella skirt is arranged on the insulation sheath, and the umbrella skirt and the insulation sheath are of an integrated structure;
An assembly hole is formed in the center of the lower part of the core body, a tubular connecting piece with internal threads is fixedly sleeved in the assembly hole, external threads matched with the internal threads are formed on the outer wall of the screw rod, and the upper part of the screw rod is installed with the tubular connecting piece in a threaded fit manner; a limiting end is fixedly arranged at the bottom of the screw rod; the screw is sleeved with a nut used for fixing the screw on the cross arm;
the limiting end head and the screw rod are of an integrated structure;
the width of the limiting end head is larger than the diameter of the screw rod and larger than the diameter of a mounting hole on a cross arm for mounting the insulator;
The core body is formed by integrally casting DMC materials.
2. The fully insulated protective needle insulator according to claim 1, wherein the inclination angle of the umbrella skirt is not less than 5 degrees.
3. The fully insulated protective pin insulator of claim 1, wherein the insulating sheath is a silicone rubber material.
4. The fully insulated protective pin insulator of claim 1, wherein the thickness of the insulating sheath is greater than or equal to 5mm.
5. The fully insulated protective needle insulator according to claim 1, wherein the number of the sheds is three in vertical parallel arrangement, and the diameter of the middle shed is smaller than that of the upper shed and the lower shed.
6. The method for assembling a fully insulated protective pin insulator of claim 1, comprising the steps of:
(1) The upper end of the screw rod passes through a mounting hole on the cross arm, and the nut is sleeved on the screw rod by the rotation of the upper end of the screw rod, so that the screw rod is primarily fixed on the cross arm;
(2) The method comprises the steps that a core body with an insulating sheath is arranged on the upper part of a screw rod, and the upper part of the screw rod and a tubular connecting piece on the core body are tightly arranged together through threads;
(3) After the angle of the insulator is adjusted to a proper position, the nut is fastened, and then the installation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921344.4A CN109065292B (en) | 2018-08-14 | 2018-08-14 | Full-insulation protective needle insulator and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921344.4A CN109065292B (en) | 2018-08-14 | 2018-08-14 | Full-insulation protective needle insulator and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109065292A CN109065292A (en) | 2018-12-21 |
| CN109065292B true CN109065292B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810921344.4A Active CN109065292B (en) | 2018-08-14 | 2018-08-14 | Full-insulation protective needle insulator and assembly method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109065292B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201536158U (en) * | 2009-08-06 | 2010-07-28 | 曹希峰 | Wiring auxiliary reinforcing terminal |
| CN203839151U (en) * | 2014-03-03 | 2014-09-17 | 林生得 | Zinc oxide arrester without jumper |
| CN205984460U (en) * | 2016-08-23 | 2017-02-22 | 广水市高强度电瓷有限公司 | Elastic suspension insulator arrangement |
| EP3258561A1 (en) * | 2016-06-16 | 2017-12-20 | Ensto Finland Oy | An insulator |
| CN107833706A (en) * | 2017-12-22 | 2018-03-23 | 国网河北省电力有限公司衡水供电分公司 | A kind of emergent insulator |
| CN207339085U (en) * | 2017-11-06 | 2018-05-08 | 国网四川省电力公司攀枝花供电公司 | A kind of insulation column for being used to replace rod insulator |
| CN207718977U (en) * | 2017-12-21 | 2018-08-10 | 扬州发运电气有限公司 | A kind of polymeric metal oxide surge arrester |
| CN208690025U (en) * | 2018-08-14 | 2019-04-02 | 郑州祥和集团电气设备有限公司 | A kind of all insulation protection pin insulator |
-
2018
- 2018-08-14 CN CN201810921344.4A patent/CN109065292B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201536158U (en) * | 2009-08-06 | 2010-07-28 | 曹希峰 | Wiring auxiliary reinforcing terminal |
| CN203839151U (en) * | 2014-03-03 | 2014-09-17 | 林生得 | Zinc oxide arrester without jumper |
| EP3258561A1 (en) * | 2016-06-16 | 2017-12-20 | Ensto Finland Oy | An insulator |
| CN205984460U (en) * | 2016-08-23 | 2017-02-22 | 广水市高强度电瓷有限公司 | Elastic suspension insulator arrangement |
| CN207339085U (en) * | 2017-11-06 | 2018-05-08 | 国网四川省电力公司攀枝花供电公司 | A kind of insulation column for being used to replace rod insulator |
| CN207718977U (en) * | 2017-12-21 | 2018-08-10 | 扬州发运电气有限公司 | A kind of polymeric metal oxide surge arrester |
| CN107833706A (en) * | 2017-12-22 | 2018-03-23 | 国网河北省电力有限公司衡水供电分公司 | A kind of emergent insulator |
| CN208690025U (en) * | 2018-08-14 | 2019-04-02 | 郑州祥和集团电气设备有限公司 | A kind of all insulation protection pin insulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109065292A (en) | 2018-12-21 |
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