CN117458374A - Insulating sheath structure for power transmission and transformation overhead conductor and installation method thereof - Google Patents
Insulating sheath structure for power transmission and transformation overhead conductor and installation method thereof Download PDFInfo
- Publication number
- CN117458374A CN117458374A CN202311442325.0A CN202311442325A CN117458374A CN 117458374 A CN117458374 A CN 117458374A CN 202311442325 A CN202311442325 A CN 202311442325A CN 117458374 A CN117458374 A CN 117458374A
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- wire clamp
- sleeve
- wire
- insulating
- overhead
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- 239000004020 conductor Substances 0.000 title claims abstract description 105
- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 230000009466 transformation Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000009434 installation Methods 0.000 title claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 32
- 239000011810 insulating material Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 6
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920001179 medium density polyethylene Polymers 0.000 claims description 3
- 239000004701 medium-density polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000005770 birds nest Nutrition 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000005765 wild carrot Nutrition 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
-
- 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
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
-
- 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
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
- H02G7/125—Damping spacers
Abstract
The invention discloses an insulating sheath structure for a power transmission and transformation overhead conductor and an installation method thereof, the insulating sheath structure comprises two overhead conductors, an insulating sleeve and a split spacing wire clamp, the split spacing wire clamp is provided with a first wire clamping groove and a second wire clamping groove, the first wire clamping groove and the second wire clamping groove are mutually and alternately distributed, the two overhead conductors respectively pass through the first wire clamping groove and the second wire clamping groove of the split spacing wire clamp so that the split spacing wire clamp is fixed on the overhead conductor, the insulating sleeve is wrapped outside the split spacing wire clamp and the overhead conductor positioned near the split spacing wire clamp, and two end face insulating baffles are respectively arranged at two ends of the insulating sleeve.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to an insulating sheath structure for a power transmission and transformation overhead conductor and an installation method thereof.
Background
In an overhead transmission line, wire split spacers have a fitting for fixing a space between wires to prevent wires from whipping each other, to suppress breeze vibration and sub-span vibration, and the like. The conductor split spacer is mainly used for limiting the relative movement between sub-conductors and a connecting clamp for holding the conductors under the normal operation condition, a clamping head of the connecting clamp is used for clamping the split sub-conductors,
in the prior art, the power transmission and transformation overhead bare conductor is required to be subjected to insulation wrapping treatment in a high-risk area, so that the risk of single-phase grounding or three-phase short circuit is reduced. Such as: an overhead exposed busbar in a transformer substation, in particular a steel beam of a portal frame and a reverse bow bare conductor below the steel beam are easy to generate single-phase grounding and even cause three-phase short circuit faults due to insufficient safety distance caused by floating objects, bird nests or large birds approaching; overhead conductors in cities, overhead conductors with black spots damaged by external forces, etc. Although the existing power transmission and transformation overhead conductor is subjected to insulation treatment, the existing conductor split spacer is not subjected to insulation treatment, so that the overhead transmission line still has the problems of single-phase grounding, three-phase short circuit fault and the like caused by insufficient safety distance due to floating objects, bird nests or large birds approaching.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the insulating sheath structure and the mounting method, which are used for insulating the whole overhead conductor and the split spacing wire clamp, playing a good role in protecting the split spacing wire clamp, improving the insulation level and the insulation capacity of the whole overhead conductor and the split spacing wire clamp, reducing the risk of forming single-phase grounding and three-phase short circuits, ensuring the operation safety of a power grid, ensuring the whole insulating sheath structure to be very convenient to mount, adopting an open design, and being capable of being rapidly mounted and overhauled during power failure overhaul.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, the invention provides an insulating sheath structure for a power transmission and transformation overhead conductor, the insulating sheath structure comprises two overhead conductors, an insulating sleeve and a split spacing wire clamp, the split spacing wire clamp is provided with a first wire clamping groove and a second wire clamping groove, the first wire clamping groove and the second wire clamping groove are mutually distributed at intervals, the two overhead conductors respectively pass through the first wire clamping groove and the second wire clamping groove of the split spacing wire clamp so that the split spacing wire clamp is fixed on the overhead conductor, the insulating sleeve wraps the split spacing wire clamp and the outside of the overhead conductor positioned near the split spacing wire clamp, two end face insulating baffles are respectively arranged at two ends of the insulating sleeve, and the insulating sleeve and the end face insulating baffles at two ends of the insulating sleeve seal the overhead conductor and the split spacing wire clamp in the insulating sleeve.
Further, a first perforation and a second perforation are formed in each end face insulating baffle, the first perforation and the second perforation are distributed at intervals, and two overhead conductors respectively penetrate through the first perforation and the second perforation of each end face insulating baffle to install the two end face insulating baffles at two ends of the insulating sleeve.
Further, the insulating sleeve comprises a sleeve made of insulating materials and a cavity structure positioned inside the sleeve, wherein the sleeve is provided with a sleeve opening communicated with the cavity structure, and the sleeve opening is used for the entrance and exit of the overhead conductor and the split spacing wire clamp into and out of the cavity structure.
Further, the sleeve opening is provided with a buckle structure, the buckle structure comprises a plurality of buckles distributed at intervals, and clamping grooves corresponding to the buckles in number and in positions, the buckles are located at one end of the sleeve and axially arranged along the sleeve opening, the buckles extend from one end of the sleeve opening to the other end, the clamping grooves are located at the other end of the sleeve, where the buckles are located, opposite to the sleeve, and the buckles are inserted into the clamping grooves so as to fasten the sleeve opening.
Further, the insulating material comprises one of polyurethane, polyvinyl chloride, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke zero-halogen polyethylene, polytetrafluoroethylene, silicone rubber and EPDM.
Further, the overhead conductor comprises a conductor insulation sheath and a power transmission and transformation conductor, wherein the conductor insulation sheath is wrapped outside the power transmission and transformation conductor.
Further, the split spacing wire clamp comprises an upper wire clamp body and a lower wire clamp body, the upper wire clamp body is arranged above the lower wire clamp body, the upper wire clamp body is provided with a first upper half arc-shaped wire groove and a second upper half arc-shaped wire groove, a first lower half arc-shaped wire groove and a second lower half arc-shaped wire groove are respectively arranged on the inner side surface of the lower wire clamp body and the opposite inner side surface of the upper wire clamp body, the first upper half arc-shaped wire groove and the first lower half arc-shaped wire groove are vertically communicated to form a first wire clamp groove, and the second upper half arc-shaped wire groove and the second lower half arc-shaped wire groove are vertically communicated to form a second wire clamp groove.
Further, the split spacing wire clamp comprises a fastener and a fixing piece, the upper wire clamp body is provided with an upper fixing hole, the lower wire clamp body and the upper fixing hole of the upper wire clamp body are correspondingly arranged at the lower fixing hole, and the fastener penetrates through the lower fixing hole of the lower wire clamp body from the upper fixing hole of the upper wire clamp body and is fixed by the fixing piece, so that the upper wire clamp body is arranged above the lower wire clamp body.
On the other hand, the invention also provides a mounting method of the insulating sheath structure for the power transmission and transformation overhead conductor, which comprises the following mounting steps:
step 1), two overhead conductors respectively pass through a first wire clamping groove and a second wire clamping groove of a split spacing wire clamp, and the split spacing wire clamp is fixed between the two overhead conductors to form a conductor split spacing rod;
step 2) the sleeve buckle is pulled out of the clamping groove, so that the buckle and the clamping groove are not fastened with the sleeve opening any more, the sleeve opening is opened, and then an overhead conductor fixed with the overhead conductor is placed;
step 3) wrapping the split spacing wire clamp and the overhead wire embedded near the split spacing wire clamp by using a sleeve of an insulating sleeve, inserting a buckle into a clamping groove, and fastening a sleeve opening of the sleeve;
step 4) embedding two end face insulating baffles at two ends of an insulating sleeve respectively so as to seal the overhead conductor and the split spacing wire clamp in the insulating sleeve;
and 5) adjusting the flatness of the overhead conductor and the insulating sleeve.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention discloses an insulating sheath structure, which comprises two overhead conductors, an insulating sleeve and a split spacing wire clamp, wherein the split spacing wire clamp is provided with a first wire clamping groove and a second wire clamping groove, the first wire clamping groove and the second wire clamping groove are distributed at intervals, the two overhead conductors respectively pass through the first wire clamping groove and the second wire clamping groove of the split spacing wire clamp so as to be fixed on the overhead conductors, the insulating sleeve is wrapped outside the split spacing wire clamp and the overhead conductors positioned nearby the split spacing wire clamp, two end face insulating baffles are respectively arranged at two ends of the insulating sleeve, the overhead conductors and the split spacing wire clamp are sealed in the insulating sleeve through the insulating sleeve and the end face insulating baffles at two ends of the insulating sleeve, so that the overhead conductors and the split spacing wire clamp are integrally insulated.
(2) The insulating sleeve comprises a sleeve and a cavity structure, the sleeve is provided with a sleeve opening, the sleeve opening is used for an overhead conductor and a split spacing wire clamp to enter and exit the cavity structure, the sleeve opening is provided with a buckle structure, the buckle structure comprises a plurality of buckles distributed at intervals and a plurality of clamping grooves corresponding to the buckles in number and in position, the buckles are positioned on one end of the sleeve and axially arranged along the sleeve opening, the buckles extend from one end of the sleeve opening to the other end, the clamping grooves are positioned on the other end of the sleeve opposite to the sleeve where the buckles are positioned, and the buckles are inserted into the clamping grooves so as to fasten the sleeve opening. The insulating sleeve of the invention adopts an open design, can be quickly installed and overhauled during power failure overhauling, and is very convenient for detaching and installing the overhead conductor and the split spacing wire clamp from the inside of the insulating sleeve during maintenance.
(3) The insulating sleeve comprises the sleeve, is made of insulating materials, has good insulating performance on the overhead conductor and the split spacing wire clamp, has excellent weather resistance, and can play a good role in protecting the split spacing wire clamp.
Drawings
Fig. 1 is a view showing the use of the insulating sheath structure of the present invention in a power transmission and transformation overhead conductor;
FIG. 2 is a schematic illustration of an insulative sleeve wrapped split spacer clip of the present invention;
FIG. 3 is an exploded view of the insulating sheath structure of the present invention;
FIG. 4 is a schematic view of an insulating sleeve according to the present invention;
FIG. 5 is a schematic diagram of a second embodiment of an insulating sleeve according to the present invention;
FIG. 6 is a schematic view of the structure of the sleeve of the present invention;
FIG. 7 is a schematic diagram of a split spacer clip and overhead conductor of the present invention;
FIG. 8 is a second schematic diagram of the relationship between a split spacer clip and an overhead conductor of the present invention;
fig. 9 is a schematic structural view of a split spacer clip of the present invention.
In the figure: overhead conductor 1, insulating sleeve 2, sleeve 21, cavity structure 22, sleeve opening 23, snap structure 24, snap 241, snap groove 242, end face insulating barrier 3, split spacer wire clamp 4, first wire clamp slot 41, second wire clamp slot 42, upper wire clamp body 43, first upper semi-arc wire clamp 431, second upper semi-arc wire clamp 432, lower wire clamp body 44, first lower semi-arc wire clamp 441, second lower semi-arc wire clamp 442, fastener 45, 35kV sleeve 5.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the principles of the invention by way of example, and, together with the description, serve to explain the principles of the invention. In the drawings to which reference is made, the same or similar components in different drawings are denoted by the same reference numerals.
As shown in fig. 1-9, a first embodiment of the present invention provides an insulating sheath structure for a power transmission and transformation overhead conductor 1, the insulating sheath structure includes two overhead conductors 1, an insulating sleeve 2, and a split spacing wire clamp 4, the split spacing wire clamp 4 is provided with a first wire clamping groove 41 and a second wire clamping groove 42, the first wire clamping groove 41 and the second wire clamping groove 42 are distributed at intervals, the two overhead conductors 1 respectively pass through the first wire clamping groove 41 and the second wire clamping groove 42 of the split spacing wire clamp 4, the split spacing wire clamp 4 is conveniently fixed on the overhead conductor 1, two ends of the overhead conductor 1 are respectively connected with 35kV sleeves 5, the insulating sleeve 2 is wrapped outside the split spacing wire clamp 4 and the overhead conductor 1 located near the split spacing wire clamp 4, two end face insulating baffles 3 are respectively installed at two ends of the insulating sleeve 2, a first perforation and a second perforation are provided on each end face insulating baffle 3, the first perforation and the second perforation are mutually and alternately distributed, two overhead conductors 1 respectively pass through the first perforation and the second perforation of each end surface insulation baffle plate 3 to install the two end surface insulation baffle plates 3 at two ends of the insulation sleeve 2, the invention seals the overhead conductors 1 and the split spacing wire clamps 4 in the insulation sleeve 2 through the insulation sleeve 2 and the end surface insulation baffle plates 3 at two ends of the insulation sleeve, the invention can realize the integral insulation of the overhead conductors 1 and the split spacing wire clamps 4, the invention can protect the split spacing wire clamps 4 and can also promote the integral insulation level and capability of the overhead conductors 1 and the split spacing wire clamps 4 through arranging the insulation sleeve 2, the invention ensures that the metal parts of the split spacing wire clamps 4 are not exposed and foreign matters cannot touch by sealing the split spacing wire clamps 4 in the insulation sleeve 2, thereby reducing the risk of forming single-phase grounding and three-phase short circuit, improving the operation safety of the power grid, and the insulating sleeve 2 provided by the invention can be reused.
In the specific implementation of the invention, the insulating sleeve 2 comprises a sleeve 21 and a cavity structure 22, wherein the sleeve 21 is made of an insulating material, the cavity structure 22 is positioned in the sleeve 21, a sleeve opening 23 communicated with the cavity structure 22 is arranged on the sleeve 21, the sleeve opening 23 is used for the air wire 1 and the split spacing clip 4 to enter and exit the cavity structure 22, and the insulating material comprises one of polyurethane, polyvinyl chloride, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke zero-halogen polyethylene, polytetrafluoroethylene, silicon rubber and EPDM. The invention is also provided with the buckling structure 24 on the sleeve opening 23, the buckling structure 24 comprises a plurality of buckling pieces 241 which are distributed at intervals and clamping grooves 242 which are equal in number and correspond to the buckling pieces 241 in position, the buckling pieces 241 are arranged on one end of the sleeve 21 and axially along the sleeve opening 23, the buckling pieces 241 extend from one end to the other end of the sleeve opening 23, the clamping grooves 242 are arranged on the other end of the sleeve 21 opposite to the sleeve 21 where the buckling pieces 241 are arranged, and the buckling pieces 241 are inserted into the clamping grooves 242 so as to buckle the sleeve opening 23. The insulating sleeve 2 of the invention adopts an open design, can be quickly installed and overhauled during power failure overhauling, and is very convenient for detaching and installing the overhead conductor 1 and the split spacing wire clamp 4 from the insulating sleeve 2 during maintenance, the sleeve 21 is made of insulating materials, has good insulating performance on the overhead conductor 1 and the split spacing wire clamp 4, has excellent weather resistance, and can play a good role in protecting the split spacing wire clamp 4.
The overhead conductor 1 comprises a conductor insulation sheath and a power transmission and transformation conductor, wherein the conductor insulation sheath is wrapped outside the power transmission and transformation conductor and can play an insulation role on the power transmission and transformation conductor.
In a specific implementation, the split spacing wire clip 4 of the present invention includes an upper wire clip body 43 and a lower wire clip body 44, the upper wire clip body 43 is mounted above the lower wire clip body 44, the upper wire clip body 43 is provided with a first upper half arc wire slot 431 and a second upper half arc wire slot 432, opposite inner sides of the lower wire clip body 44 and the upper wire clip body 43 are respectively provided with a first lower half arc wire slot 441 and a second lower half arc wire slot 442, the first upper half arc wire slot 431 and the first lower half arc wire slot 441 are vertically penetrated to form a first wire clip slot 41, the second upper half arc wire slot 432 and the second lower half arc wire slot 442 are vertically penetrated to form a second wire clip 42, the split spacing wire clip 4 of the present invention includes a fastener 45 and a fixing piece, the upper wire clip body 43 is provided with an upper fixing hole, the lower wire clip body 44 and the upper fixing hole of the upper wire clip body 43 are correspondingly positioned in the lower fixing hole, the fastener 45 penetrates from the upper fixing hole of the upper wire clip body 43 to the lower fixing hole of the lower wire clip body 44 and is vertically penetrated by the fixing piece of the fixing piece, thereby realizing the upper wire clip body 43 and the upper wire clip body 44 is vertically mounted. The split spacing wire clamp 4 can enable the overhead conductor 1 to pass through the first wire clamping groove 41 and the second wire clamping groove 42, and then the upper wire clamp body 43 is fixed on the lower wire clamp body 44 through the fastener 45 and the fixing piece, so that the split spacing wire clamp 4 and the overhead conductor 1 are fixed, the fastener 45 can be a bolt, and the fixing piece can be a nut.
In other embodiments, rubber pads are fixed inside the first wire clamping groove 41 and the second wire clamping groove 42 of the split spacing wire clamp 4, so that the overhead wire 1 can be protected.
On the other hand, the invention also provides a mounting method of the insulating sheath structure for the power transmission and transformation overhead conductor 1, which comprises the following mounting steps:
step 1), two overhead conductors 1 respectively pass through a first wire clamping groove 41 and a second wire clamping groove 42 of a split spacing wire clamp 4, and the split spacing wire clamp 4 is fixed between the two overhead conductors 1 to form a conductor split spacing rod;
step 2) the sleeve 21 is clamped 241 to be pulled out of the clamping groove 242, so that the clamping groove 242 and the clamping groove 241 are not clamped with the sleeve opening 23 any more, and the sleeve opening 23 is opened, and then the overhead conductor 1 with the overhead conductor 1 fixed thereon is put in;
step 3) then wrapping the split spacing wire clamp 4 and the overhead conductor 1 embedded near the split spacing wire clamp 4 by the sleeve 21 of the insulating sleeve 2, inserting the buckle 241 into the clamping groove 242, and fastening the sleeve opening 23 of the sleeve 21;
step 4) embedding two end face insulating baffles 3 at two ends of the insulating sleeve 2 respectively so as to seal the overhead conductor 1 and the split spacing wire clamp 4 in the insulating sleeve 2;
step 5) the flatness of the overhead conductor 1 and the insulating sleeve 2 is adjusted.
While the invention has been described in detail in connection with the present embodiments, the above description is illustrative of the invention and is not intended to limit the scope of the invention, i.e., the invention is not limited to the specific embodiments disclosed herein.
Claims (9)
1. An insulating sheath structure for a power transmission and transformation overhead conductor, which is characterized in that: the insulation sheath structure comprises two overhead wires, an insulation sleeve and a split spacing wire clamp, wherein the split spacing wire clamp is provided with a first wire clamping groove and a second wire clamping groove which are distributed at intervals, the two overhead wires respectively penetrate through the first wire clamping groove and the second wire clamping groove of the split spacing wire clamp so that the split spacing wire clamp is fixed on the overhead wires, the insulation sleeve wraps the split spacing wire clamp and the outside of the overhead wires located near the split spacing wire clamp, two end face insulation baffles are respectively arranged at two ends of the insulation sleeve, and the insulation sleeve and the end face insulation baffles at two ends of the insulation sleeve seal the overhead wires and the split spacing wire clamp in the insulation sleeve.
2. The insulating jacket structure for a power transmission and transformation overhead conductor according to claim 1, wherein: the first perforation and the second perforation are formed in each end face insulating baffle, the first perforation and the second perforation are distributed at intervals, and the two overhead conductors respectively penetrate through the first perforation and the second perforation of each end face insulating baffle to install the two end face insulating baffles at two ends of the insulating sleeve.
3. The insulating jacket structure for a power transmission and transformation overhead conductor according to claim 1, wherein: the insulating sleeve comprises a sleeve made of insulating materials and a cavity structure positioned in the sleeve, wherein the sleeve is provided with a sleeve opening communicated with the cavity structure, and the sleeve opening is used for the air wire and the split spacing wire clamp to enter and exit the cavity structure.
4. An insulating jacket structure for a power transmission and transformation overhead conductor according to claim 3, characterized in that: the sleeve opening is equipped with buckle structure, buckle structure include a plurality of mutual interval distribution's buckle and with buckle equiquantity and the corresponding draw-in groove of position, buckle be located telescopic one end and set up along sleeve opening axial, buckle extends to the other end from sleeve open-ended one end, the draw-in groove is located the sleeve other end that the buckle is located sleeve position relatively, the buckle inserts in the draw-in groove so that the fastening sleeve opening.
5. An insulating jacket structure for a power transmission and transformation overhead conductor according to claim 3, characterized in that: the insulating material comprises one of polyurethane, polyvinyl chloride, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, polytetrafluoroethylene, silicone rubber and EPDM.
6. The insulating jacket structure for a power transmission and transformation overhead conductor according to claim 1, wherein: the overhead conductor comprises a conductor insulation sheath and a power transmission and transformation conductor, and the conductor insulation sheath is wrapped outside the power transmission and transformation conductor.
7. The insulating jacket structure for a power transmission and transformation overhead conductor according to claim 1, wherein: the split spacing wire clamp comprises an upper wire clamp body and a lower wire clamp body, the upper wire clamp body is arranged above the lower wire clamp body, the upper wire clamp body is provided with a first upper half arc-shaped wire groove and a second upper half arc-shaped wire groove, a first lower half arc-shaped wire groove and a second lower half arc-shaped wire groove are respectively formed in the inner side surface of the lower wire clamp body and the opposite side surface of the upper wire clamp body, the first upper half arc-shaped wire groove and the first lower half arc-shaped wire groove are vertically communicated to form a first wire clamp groove, and the second upper half arc-shaped wire groove and the second lower half arc-shaped wire groove are vertically communicated to form a second wire clamp groove.
8. The insulating jacket structure for a power transmission and transformation overhead conductor according to claim 1, wherein: the split spacing wire clamp comprises a fastener and a fixing piece, wherein the upper wire clamp body is provided with an upper fixing hole, the lower wire clamp body and the upper fixing hole of the upper wire clamp body are correspondingly arranged at the lower fixing hole, and the fastener penetrates through the lower fixing hole of the lower wire clamp body from the upper fixing hole of the upper wire clamp body and is fixed by the fixing piece, so that the upper wire clamp body is arranged above the lower wire clamp body.
9. The installation method of the insulating sheath structure for the power transmission and transformation overhead conductor is characterized by comprising the following steps of: the installation method comprises the following installation steps:
step 1), two overhead conductors respectively pass through a first wire clamping groove and a second wire clamping groove of a split spacing wire clamp, and the split spacing wire clamp is fixed between the two overhead conductors to form a conductor split spacing rod;
step 2) the sleeve buckle is pulled out of the clamping groove, so that the buckle and the clamping groove are not fastened with the sleeve opening any more, the sleeve opening is opened, and then an overhead conductor fixed with the overhead conductor is placed;
step 3) wrapping the split spacing wire clamp and the overhead wire embedded near the split spacing wire clamp by using a sleeve of an insulating sleeve, inserting a buckle into a clamping groove, and fastening a sleeve opening of the sleeve;
step 4) embedding two end face insulating baffles at two ends of an insulating sleeve respectively so as to seal the overhead conductor and the split spacing wire clamp in the insulating sleeve;
and 5) adjusting the flatness of the overhead conductor and the insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311442325.0A CN117458374A (en) | 2023-11-01 | 2023-11-01 | Insulating sheath structure for power transmission and transformation overhead conductor and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311442325.0A CN117458374A (en) | 2023-11-01 | 2023-11-01 | Insulating sheath structure for power transmission and transformation overhead conductor and installation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117458374A true CN117458374A (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311442325.0A Pending CN117458374A (en) | 2023-11-01 | 2023-11-01 | Insulating sheath structure for power transmission and transformation overhead conductor and installation method thereof |
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| CN (1) | CN117458374A (en) |
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| CN204441836U (en) * | 2015-03-16 | 2015-07-01 | 国家电网公司 | Binary fission lead spacer |
| CN105958408A (en) * | 2016-06-16 | 2016-09-21 | 国网山东省电力公司五莲县供电公司 | Novel wedge type insulating strain clamp capable of preventing wire from falling off |
| RU171230U1 (en) * | 2017-02-08 | 2017-05-25 | Общество С Ограниченной Ответственностью "Мзва" (Ооо "Мзва") | DEVICE FOR TEMPORARY EARTHING OF THE ISOLATED ELECTRIC TRANSMISSION AIR LINES 6-35 KV |
| CN207069523U (en) * | 2017-08-29 | 2018-03-02 | 上海长沪线缆附件有限公司 | Insulating sheath component for aerial condutor sectioning |
| CN116388100A (en) * | 2023-05-04 | 2023-07-04 | 国网新疆电力有限公司超高压分公司 | Novel anti-loosening and anti-slip spacer for split conductor of power transmission and transformation system |
| CN219874783U (en) * | 2023-05-30 | 2023-10-20 | 安徽红绿黄电气科技有限公司 | Novel power clamp type insulating sheath |
| CN116884676A (en) * | 2023-07-28 | 2023-10-13 | 广东电网有限责任公司江门供电局 | Insulation reinforcing device for power transmission and transformation overhead bare conductor and installation method thereof |
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