CN109066554B - High-strength six-connection three-hanging-point wind-resistant tension string for extra-high voltage direct current circuit - Google Patents
High-strength six-connection three-hanging-point wind-resistant tension string for extra-high voltage direct current circuit Download PDFInfo
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- CN109066554B CN109066554B CN201810982879.2A CN201810982879A CN109066554B CN 109066554 B CN109066554 B CN 109066554B CN 201810982879 A CN201810982879 A CN 201810982879A CN 109066554 B CN109066554 B CN 109066554B
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- insulator
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Classifications
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- 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
- 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
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- 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
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
-
- 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
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
A high-strength six-connection three-hanging-point wind-resistant tension string for an extra-high voltage direct current circuit relates to the field of power transmission devices. The novel wire-connection type wire-connection device comprises an insulator string formed by connecting disc-type suspension insulator strings, wherein the insulator string is provided with six insulator strings which are arranged in two rows and three columns, one ends of the two insulator strings in the same column are respectively connected with a hanging point fitting through a first yoke plate, the other ends of the insulator strings in the same column are connected with a bowl head hanging plate, the bowl head hanging plates connected with the insulator strings in the same column are respectively connected with a three-change two yoke plate through a second yoke plate, the three-change two yoke plates are connected with a square yoke plate through two third parallel hanging plates, and the other ends of the square yoke plates are connected with strain clamps which are used for connecting wires. According to the invention, the structural strength of the tension string can be effectively improved by optimizing the hardware structure, the connection form and the number of insulators, so that the lead is fixed on the tension tower in a traction manner, and the normal operation of a power transmission line is ensured.
Description
Technical Field
The invention relates to the field of power transmission devices, in particular to a high-strength six-link three-hanging-point wind-resistant strain insulator string for an extra-high voltage direct current circuit.
Background
With the rapid development of socioeconomic performance, the demand for electricity by users has also increased rapidly. However, primary energy is unevenly distributed and is far away, and the power transmission channel is increasingly stressed. In order to solve the above problems, the construction of a transmission line of a higher voltage class as a backbone network for remote transmission is a new solution to improve transmission capacity. The strain insulator string in the overhead transmission line is used for pulling and fixing the transmission conductor on the strain tower, and is an important hardware string in the transmission line. Along with the construction of extra-high voltage, the voltage level is higher and higher, the section of the wire is required to be enlarged, the number of split wires is required to be increased, and therefore new hardware strings and hardware in the strings are required to be designed to improve the structural strength of the special hardware strings, and the special hardware strings are suitable for engineering requirements.
In addition, in northern severe wind areas of China, the accident of tearing of the welding part of the large-pipe-diameter shielding ring body and the support in the ultra-high voltage transmission line has occurred, so that the problem of how to improve the connection strength between the shielding ring support and the shielding ring body, which is the urgent need to be solved before the technicians.
Disclosure of Invention
The invention aims to provide a high-strength six-link three-hanging-point wind-resistant strain string for an extra-high voltage direct current line, and the structural strength of the strain string is ensured by reasonably optimizing the structure and the connection form of hardware fittings in the strain string, so that the requirements of engineering construction are met, and the normal operation of a power transmission line is ensured.
The technical scheme for achieving the purpose is as follows: the utility model provides an extra-high voltage direct current is six antithetical couplet three hanging point wind-resistant strain insulator-string for circuit which characterized in that: the novel wire-connection type wire-connection device comprises an insulator string formed by connecting disc-type suspension insulator strings, wherein the insulator string is provided with six insulator strings which are arranged in two rows and three columns, one ends of the two insulator strings in the same column are respectively connected with a hanging point fitting through a first yoke plate, the other ends of the insulator strings in the same column are connected with a bowl head hanging plate, the bowl head hanging plates connected with the insulator strings in the same column are respectively connected with a three-change two yoke plate through a second yoke plate, the three-change two yoke plates are connected with a square yoke plate through two third parallel hanging plates, and the other ends of the square yoke plates are connected with strain clamps which are used for connecting wires.
Further, a first parallel hanging plate, a traction plate, a second parallel hanging plate, a first adjusting plate and two first U-shaped hanging rings are sequentially connected between the first connecting plate and the hanging point hardware fitting.
Further, a first Z-shaped right-angle hanging plate, a third connecting plate, a ZBD-type right-angle hanging plate, a second Z-shaped right-angle hanging plate, a second adjusting plate and a second U-shaped hanging ring are sequentially connected between the square connecting plate and the strain clamp.
Further, an extension pull rod is connected between the second Z-shaped right-angle hanging plate and the second adjusting plate, and the extension pull rod is connected with the second adjusting plate through a fourth right-angle hanging plate.
Further, the first adjusting plate and the second adjusting plate have the same structure, and comprise two crossed side edges with obtuse angles and arc edges arranged between the two side edges, connecting holes are formed at the crossing positions of the two side edges, and the connecting holes are formed at intervals along the arc edges.
Further, an equalizing ring is arranged in the insulator string and is composed of two semi-rings which are symmetrically arranged, end sealing balls are arranged at the ends of the semi-rings, and an equalizing ring support is arranged on the equalizing ring.
Further, the two ends of the square yoke plate are connected with shielding rings, two groups of shielding ring supports which are arranged in a crossing mode are arranged on the shielding rings, and the shielding ring supports are connected with the square yoke plate through L-shaped connecting pieces.
Further, the shielding ring support comprises a C-shaped left support and a C-shaped right support, the C-shaped left support and the C-shaped right support are arranged in a back-to-back mode, the vertical sections of the L-shaped connecting pieces are connected between the C-shaped left supports and the C-shaped right supports of the two shielding ring supports through bolts respectively, and the horizontal sections of the L-shaped connecting pieces are connected with the square connecting plates through bolts.
Further, the bowl head hanging plate comprises a bowl head seat positioned at the upper part and a U-shaped seat positioned at the lower part, a fastening bolt is arranged at the lower part of the U-shaped seat in a penetrating way, a fastening nut is screwed on the fastening bolt and provided with a first cotter pin, and an R-shaped pin for locking the ball head is arranged on the bowl head seat.
Further, the hanging point fitting comprises a hanging plate, a hanging hole is formed in the hanging plate, locking connectors are respectively connected to two ends of the hanging plate, locking nuts are respectively connected to two ends of the locking connectors, and a second cotter pin is arranged at the two ends of the locking connectors.
The invention has the beneficial effects that:
in order to solve the problems in the prior art, a high-strength six-link three-hanging-point wind-resistant tension string for an extra-high voltage direct current circuit is provided, and a mature processing technology is adopted, so that the structural strength of a hardware fitting and the strength of the hardware fitting string are easily ensured;
according to the invention, the structural strength of the tension string can be effectively improved by optimizing the hardware structure, the connection form and the number of insulators, so that the lead is fixed on the tension tower in a traction manner, and the normal operation of a power transmission line is ensured.
The shielding ring is an annular body, two groups of supports which are arranged in a crossing way are arranged on the shielding ring, and the two groups of supports which are arranged in a crossing way can effectively improve the reliability and the wind resistance of the shielding ring in high altitude use.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic structural view of an adjusting plate;
FIG. 4 is a schematic structural view of a grading ring;
FIG. 5 is a schematic view of a shield ring;
FIG. 6 is a schematic view of the structure of an L-shaped connector;
FIG. 7 is a schematic view of the structure of the bowl head hanging plate;
fig. 8 is a schematic structural diagram of the hanging point hardware fitting;
FIG. 9 is a schematic structural view of a ball-point suspension loop;
FIG. 10 is a schematic view of the traction plate;
fig. 11 is a schematic structural view of a tri-plate manifold.
Detailed Description
As shown in fig. 1-11, the insulator string 1 comprises six insulator strings connected by a disc-type suspension insulator string, wherein the insulator strings 1 are arranged in two rows and three columns, the insulator strings 1 are internally provided with equalizing rings 30, the equalizing rings 30 are composed of two semi-rings which are symmetrically arranged, end sealing balls are arranged at the ends of the semi-rings, and equalizing ring supports 31 are arranged on the equalizing rings 30.
One end of the two insulator strings 1 in the same row respectively sequentially passes through the ball hanging ring 4 and the first connecting plate 2
The first parallel link plate 5, the traction plate 6, the second parallel link plate 7, the first adjusting plate 8 and the two first U-shaped links 9 are connected with the hanging point fitting 3, the hanging point fitting 3 comprises a hanging plate 3.1, hanging holes 3.2 are formed in the hanging plate 3.1, two ends of the hanging plate 3.1 are respectively connected with locking joints 3.3, and two ends of the locking joints 3.3 are respectively connected with locking nuts 3.4 and are provided with second cotter pins 3.5.
The other end of the insulator string 1 in the same row is connected with a bowl head hanging plate 10, as shown in fig. 7, the bowl head hanging plate 10 comprises a bowl head seat 10.1 which is arranged on the upper portion and connected with the insulator string 1, and a U-shaped seat 10.2 which is arranged on the lower portion, a fastening bolt 10.3 is arranged on the lower portion of the U-shaped seat 10.2 in a penetrating mode, a fastening nut 10.4 is screwed on the fastening bolt 10.3 and provided with a first cotter pin 10.5, and an R-shaped pin 10.6 which locks the ball head of the bowl head hanging plate 10 is arranged on the bowl head seat 10.1.
The bowl head hanging plate 10 of the insulator string 1 in the same column is connected with a three-change two-way connecting plate 12 through a second connecting plate 11 respectively, the three-change two-way connecting plate 12 is connected with a square connecting plate 14 through two hanging plates 13, two ends of the square connecting plate 14 are provided with shielding rings 27, two groups of shielding ring supports 27 which are arranged in a crossing mode are arranged on the shielding rings 27, the shielding ring supports 27 are connected with the square connecting plate 14 through L-shaped connecting pieces 16, the shielding ring supports 27 comprise C-shaped left supports 17 and C-shaped right supports 18, the C-shaped left supports 17 and the C-shaped right supports 18 are arranged in a back mode, vertical sections of the L-shaped connecting pieces 16 are connected between the C-shaped left supports 17 and the C-shaped right supports 08 of the two-way connecting plate 17 through bolts respectively, and horizontal sections of the L-shaped connecting pieces 16 are connected with the three-change two-way connecting plate 14 through bolts.
The upper end of square yoke plate 14 is connected with strain clamp 15, and strain clamp 15 is used for connecting the wire, has connected gradually first Z type right angle link plate 19, third link plate 20, ZBD type right angle link plate 21, second Z type right angle link plate 22, second regulating plate 25 and second U-shaped link 26 between square yoke plate 14 and the strain clamp 15, and Z type right angle link plate structure form is connected to this embodiment adoption ZBD type right angle link plate, makes whole strain insulator string make the atress more even like this, improves structural strength to satisfy the user demand.
The second Z-shaped right-angle hanging plate 22 and the second adjusting plate 25 can be connected with an extension pull rod 23 according to the length requirement, and the extension pull rod 23 is connected with the second adjusting plate 25 through a fourth right-angle hanging plate 24.
The first adjusting plate 8 and the second adjusting plate 25 have the same structure, and comprise two crossed obtuse-angle sides and an arc-shaped side arranged between the two crossed obtuse-angle sides, wherein connecting holes are formed at the crossing positions of the two crossed obtuse-angle sides, and the connecting holes are formed at intervals along the arc-shaped side.
The difference between the arrangement and the prior art mainly lies in the distribution form of the insulator string, namely the six-link three-hanging-point balanced distribution form, and the Z-shaped right-angle hanging plate structure form is connected by adopting the ZBD-shaped right-angle hanging plate, so that the whole strain string is more uniformly stressed, the structural strength is improved, the use requirement is met, two groups of shielding ring brackets 27 which are arranged in a crossing way are arranged on the shielding ring 27, and the reliability and the wind resistance performance of the shielding ring in high altitude use are effectively improved.
Claims (6)
1. The utility model provides an extra-high voltage direct current is six antithetical couplet three hanging point wind-resistant strain insulator-string for circuit which characterized in that: the wire-connecting device comprises an insulator string formed by connecting disc-type suspension insulator strings, wherein the insulator string is provided with six insulator strings which are arranged in two rows and three columns, one ends of the two insulator strings in the same column are respectively connected with a hanging point fitting through a first yoke plate, the other ends of the insulator strings in the same column are connected with a bowl head hanging plate, the bowl head hanging plates connected with the insulator strings in the same column are respectively connected with a three-change two yoke plate through a second yoke plate, the three-change two yoke plates are connected with a square yoke plate through two third parallel hanging plates, the other ends of the square yoke plates are connected with strain clamps, and the strain clamps are used for connecting wires;
The square connecting plate and the strain clamp are sequentially connected with a first Z-shaped right-angle hanging plate, a third connecting plate, a ZBD-type right-angle hanging plate, a second Z-shaped right-angle hanging plate, a second adjusting plate and a second U-shaped hanging ring;
the two ends of the square connecting plate are connected with shielding rings, two groups of shielding ring brackets which are arranged in a crossing way are arranged on the shielding rings, and the shielding ring brackets are connected with the square connecting plate through L-shaped connecting pieces;
the shielding ring supports comprise C-shaped left supports and C-shaped right supports, the C-shaped left supports and the C-shaped right supports are arranged in a back-to-back mode, vertical sections of the L-shaped connecting pieces are connected between the C-shaped left supports and the C-shaped right supports of the two shielding ring supports through bolts respectively, and horizontal sections of the L-shaped connecting pieces are connected with the square connecting plates through bolts;
The hanging point hardware fitting comprises a hanging plate, a hanging hole is formed in the hanging plate, locking connectors are respectively connected to two ends of the hanging plate, locking nuts are respectively connected to two ends of the locking connectors, and a second cotter pin is arranged at the two ends of the locking connectors.
2. The high-strength six-link three-hanging-point wind-resistant strain string for extra-high voltage direct current lines according to claim 1, wherein the string is characterized in that: the first parallel hanging plate, the traction plate, the second parallel hanging plate, the first adjusting plate and the two first U-shaped hanging rings are sequentially connected between the first connecting plate and the hanging point fitting.
3. The high-strength six-link three-hanging-point wind-resistant strain string for extra-high voltage direct current lines according to claim 1, wherein the string is characterized in that: an extension pull rod is connected between the second Z-shaped right-angle hanging plate and the second adjusting plate, and is connected with the second adjusting plate through a fourth right-angle hanging plate.
4. The high-strength six-link three-hanging-point wind-resistant strain string for extra-high voltage direct current lines according to claim 2, wherein the high-strength six-link three-hanging-point wind-resistant strain string is characterized in that: the structure of the first adjusting plate is the same as that of the second adjusting plate, the first adjusting plate comprises two crossed side edges with obtuse angles and an arc-shaped edge arranged between the two side edges, connecting holes are formed at the crossing positions of the two side edges, and the connecting holes are formed at intervals along the arc-shaped edge.
5. The high-strength six-link three-hanging-point wind-resistant strain string for extra-high voltage direct current lines according to claim 1, wherein the string is characterized in that: the grading ring is arranged in the insulator string and consists of two semi-rings which are symmetrically arranged, end sealing balls are arranged at the ends of the semi-rings, and a grading ring support is arranged on the grading ring.
6. The high-strength six-link three-hanging-point wind-resistant strain string for extra-high voltage direct current lines according to claim 1, wherein the string is characterized in that: the bowl head hanging plate comprises a bowl head seat and a U-shaped seat, wherein the bowl head seat is arranged on the upper portion, the U-shaped seat is arranged on the lower portion of the U-shaped seat, a fastening bolt is arranged on the lower portion of the U-shaped seat in a penetrating mode, a fastening nut is screwed on the fastening bolt, a first cotter pin is arranged on the fastening bolt, and an R-shaped pin for locking the ball head is arranged on the bowl head seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982879.2A CN109066554B (en) | 2018-08-27 | 2018-08-27 | High-strength six-connection three-hanging-point wind-resistant tension string for extra-high voltage direct current circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982879.2A CN109066554B (en) | 2018-08-27 | 2018-08-27 | High-strength six-connection three-hanging-point wind-resistant tension string for extra-high voltage direct current circuit |
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| Publication Number | Publication Date |
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| CN109066554A CN109066554A (en) | 2018-12-21 |
| CN109066554B true CN109066554B (en) | 2024-07-16 |
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| CN201810982879.2A Active CN109066554B (en) | 2018-08-27 | 2018-08-27 | High-strength six-connection three-hanging-point wind-resistant tension string for extra-high voltage direct current circuit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110047630B (en) * | 2019-06-03 | 2024-05-24 | 江苏天南电力股份有限公司 | Tension string of three split conductors of insulator |
| CN110571738A (en) * | 2019-08-20 | 2019-12-13 | 中国能源建设集团江苏省电力设计院有限公司 | device and method for leading and connecting multiple split conductors in transmission line gear |
| CN113871111A (en) * | 2021-09-18 | 2021-12-31 | 国网江苏省电力有限公司建设分公司 | A six-link six-hanging suspension string for large span and large tonnage |
| CN120545900A (en) * | 2024-11-18 | 2025-08-26 | 中国电力工程顾问集团西南电力设计院有限公司 | A configuration method for vertically arranging conductor tension strings in extremely heavy ice areas |
| CN122370092A (en) * | 2026-06-10 | 2026-07-10 | 国网陕西省电力有限公司电力科学研究院 | Vibration and Collision Prevention Device for Tension Insulator Strings Based on Multi-Degree-of-Freedom Adjustment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208707269U (en) * | 2018-08-27 | 2019-04-05 | 江苏捷凯电力器材有限公司 | A kind of high-intensitive six or the three hanging point wind resistance strain insulator-strings of UHVDC Transmission Lines |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2673133B2 (en) * | 1992-11-20 | 1997-11-05 | 日本カタン株式会社 | Large bundle diameter 6 conductor 3 continuous tension insulator device |
| JP3362885B2 (en) * | 1992-12-01 | 2003-01-07 | 旭テック株式会社 | Large bundle 6 conductors 3 stations tension device |
| JP3256774B2 (en) * | 1995-12-20 | 2002-02-12 | 日本カタン株式会社 | Tensioning method for overhead power transmission lines, tension insulator device for multiconductor and bolt type tension clamp used in this tensioning method |
| CN2912044Y (en) * | 2006-04-24 | 2007-06-13 | 国电电力建设研究所 | Strain insulator string for super-high voltage transmitting line |
| CN201508736U (en) * | 2009-09-25 | 2010-06-16 | 浙江省电力公司 | Split type six-joint tension string with pressure equalizing ring |
| CN202258577U (en) * | 2012-01-13 | 2012-05-30 | 中国电力工程顾问集团华东电力设计院 | 6-connection 550kN large-tonnage insulator suspension hardware string for extra-high voltage direct current large span |
| CN105469909A (en) * | 2015-12-30 | 2016-04-06 | 中国电力工程顾问集团西南电力设计院有限公司 | Strain insulator string equipped with five yoke plates and three suspension points and used for extra-high voltage direct current circuit |
| CN205829110U (en) * | 2016-07-14 | 2016-12-21 | 江苏双汇电力发展股份有限公司 | ± 1100kV combination hardware fitting used for transmission line |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208707269U (en) * | 2018-08-27 | 2019-04-05 | 江苏捷凯电力器材有限公司 | A kind of high-intensitive six or the three hanging point wind resistance strain insulator-strings of UHVDC Transmission Lines |
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