CN111030016A - Suspension string structure - Google Patents
Suspension string structure Download PDFInfo
- Publication number
- CN111030016A CN111030016A CN201911249396.2A CN201911249396A CN111030016A CN 111030016 A CN111030016 A CN 111030016A CN 201911249396 A CN201911249396 A CN 201911249396A CN 111030016 A CN111030016 A CN 111030016A
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- Prior art keywords
- hanging
- suspension
- ring
- string
- plate
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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
- H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
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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
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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Abstract
本发明提供一种悬垂串结构，其将架空输电线路悬挂/锚固于铁塔上，悬垂串结构包括悬垂串左肢、悬垂串右肢、第一环环结构(17)、第二环环结构(9)和悬挂结构；悬垂串左肢位于悬挂结构的左上方，其通过第一环环结构(17)连接悬挂结构，悬垂串右肢位于悬挂结构的右上方，其通过第二环环结构(9)连接悬挂结构，第一环环结构(17)和第二环环结构(9)的尺寸均与悬垂串结构的设计破坏载荷成正比，降低了悬垂串的抢修难度和抢修成本。本发明基于机械强度匹配理论确定了架空输电线路中各组件的失效顺序，保护了架空输电线路其他组件，不会轻易损坏架空输电线路和铁塔，且减少悬垂串的抢修工作量，提高了抢修效率，减少了经济损失。
The invention provides a suspension string structure, which suspends/anchors an overhead transmission line on an iron tower. The suspension string structure includes a left leg of the suspension string, a right leg of the suspension string, a first ring structure (17), and a second ring structure (17). 9) and the suspension structure; the left limb of the suspension string is located at the upper left of the suspension structure, which is connected to the suspension structure through the first ring structure (17), and the right limb of the suspension string is located at the upper right of the suspension structure, which passes through the second ring structure (17). 9) Connect the suspension structure, the size of the first ring structure (17) and the second ring structure (9) are proportional to the design failure load of the suspension string structure, which reduces the difficulty and cost of emergency repair of the suspension string. The invention determines the failure sequence of each component in the overhead transmission line based on the mechanical strength matching theory, protects other components of the overhead transmission line, does not easily damage the overhead transmission line and the iron tower, reduces the emergency repair workload of the suspension string, and improves the emergency repair efficiency , reducing economic losses.
Description
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a suspension string structure.
Background
The hardware string is a structure formed by combining a plurality of types of hardware, and is mainly used for suspending/anchoring the overhead transmission line on an iron tower. The hardware string can be divided into a suspension string, a tension string and a jumper string according to purposes, the hardware string is mainly designed according to line parameters, the suspension string is mainly designed according to strength matching of the self weight, ice coating, wind load and the like of the overhead transmission line, and the tension string is mainly designed according to tensile strength of the overhead transmission line. The suspension string applied to engineering at present generally adopts a V-shaped suspension string, and the V-shaped suspension string is applied to a tangent tower, so that windage yaw and line-to-line distance can be reduced, the swinging of an insulator can be limited, and the size of a tower head and the width of a line corridor can be reduced.
In the operation process of an actual overhead transmission line, for different components, different product values, different damage repair difficulties and different costs are achieved, the failure sequence of each component of the suspension string in the prior art cannot be determined, and therefore the suspension string is high in repair difficulty and high in repair cost.
Disclosure of Invention
In order to overcome the defects of high emergency repair difficulty and high emergency repair cost in the prior art, the invention provides a suspension string structure which suspends/anchors an overhead transmission line on an iron tower and comprises a suspension string left limb, a suspension string right limb, a first annular structure (17), a second annular structure (9) and a suspension structure; hang string left limb and be located suspended structure's upper left side, it connects suspended structure through first ring loop structure (17), and it is located suspended structure's upper right side to hang string right limb, and it connects suspended structure through second ring loop structure (9), the size of first ring loop structure (17) and second ring loop structure (9) all with the design damage load direct ratio of hanging string structure, based on design damage load confirms the size of first ring loop structure (17) and second ring loop structure (9) makes it become weak link, has reduced the difficulty of salvageing and the cost of salvageing of hanging string.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
the invention provides a suspension string structure, which is used for suspending/anchoring an overhead transmission line on an iron tower and comprises a suspension string left limb, a suspension string right limb, a first ring structure (17), a second ring structure (9) and a suspension structure;
the left limb of the suspension string is positioned at the upper left of the suspension structure and is connected with the suspension structure through a first ring structure (17), the right limb of the suspension string is positioned at the upper right of the suspension structure and is connected with the suspension structure through a second ring structure (9);
the dimensions of the first loop structure (17) and the second loop structure (9) are each proportional to a design failure load of the pendulous string structure, the first loop structure (17) and the second loop structure (9) being dimensioned to be a weak link based on the design failure load.
The suspension structure comprises a suspension yoke plate (10), a suspension clamp (11) and a heavy hammer sheet (12);
the hanging connecting plate (10) is provided with hanging holes which are circumferentially distributed in the plane of the hanging connecting plate (10);
the suspension wire clamp (11) is fixed on the hanging hole through a bolt, and the weight piece (12) is fixed at the center of the suspension yoke plate (10) through a bolt.
The suspension clamp (11) comprises a ship-shaped clamp body (13), a clamp pressing plate (14) and a UB hanging plate (15);
the wire clamp pressing plate (14) is used for fixing an overhead transmission line and is connected with the ship-shaped wire clamp body (13) through bolts;
the upper end of the UB hanging plate (15) is provided with a first through hole, the lower end of the UB hanging plate is provided with a second through hole, the upper end of the UB hanging plate (15) is connected with the suspension connecting plate (10) through the first through hole and a bolt, and the lower end of the UB hanging plate is connected with the top of the ship-shaped wire clamp body (13) through the second through hole and the bolt.
The first through hole is a cloud-shaped through hole, and the second through hole is a circular through hole.
The left suspension string limb and the right suspension string limb respectively comprise an equalizing ring (7), and an EB hanging plate (1), a third ring structure (2), a DB adjusting plate (3), a TP adjusting plate (4), a U-shaped hanging ring (16), a ball head hanging ring (5), an insulator (6) and a socket head hanging plate (8) which are sequentially connected through bolts;
the EB hanging plate (1) is hung on an iron tower, and the equalizing ring (7) is sleeved on the outer side of the insulator (6).
The sizes of the U-shaped hanging ring (16) and the ball head hanging ring (5) are in direct proportion to the design breaking load of the suspension string structure, and the sizes of the U-shaped hanging ring (16) and the ball head hanging ring (5) are determined based on the design breaking load to be weak links.
The first ring structure, the second ring structure and the third ring structure (2) comprise two hanging rings of U-shaped structures which are connected back to back.
The suspension loop of one U-shaped structure of the first loop structure and the second loop structure is connected with the socket suspension plate (8), and the suspension loop of the other U-shaped structure is connected with the suspension connecting plate (10).
And the hanging ring of one U-shaped structure of the third ring structure (2) is connected with the EB hanging plate (1), and the hanging ring of the other U-shaped structure is connected with the DB adjusting plate (3).
The rod diameters of the U-shaped hanging ring (16), the bulb hanging ring (5) and the U-shaped hanging ring in back-to-back connection are all 18.5-38 mm.
The U-shaped hanging ring, the ball head hanging ring (5) and the hanging ring of the U-shaped structure connected back to back are formed through two forging processes, and the socket head hanging plate (8) is formed through a forging process and a machining process.
The number of the suspension clamps (11) is 2-8 and is even;
the centers of the suspension clamps (11) are positioned on the circumferences of the same circle.
The actual failure load of the pendulous string structure is more than 1.2 times the design failure load.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
the suspension string structure provided by the invention is used for suspending/anchoring an overhead transmission line on an iron tower and comprises a suspension string left limb, a suspension string right limb, a first ring structure (17), a second ring structure (9) and a suspension structure; the left limb of the suspension string is positioned at the upper left of the suspension structure, the suspension structure is connected through a first ring structure (17), the right limb of the suspension string is positioned at the upper right of the suspension structure, the suspension structure is connected through a second ring structure (9), the sizes of the first ring structure (17) and the second ring structure (9) are in direct proportion to the design damage load of the suspension string structure, the sizes of the first ring structure (17) and the second ring structure (9) are determined based on the design damage load to be weak links, the first ring structure (17) and the second ring structure (9) are set to be weak links, the first ring structure and the second ring structure fail under extreme or special conditions, and the emergency repair difficulty and the emergency repair cost of the suspension string are reduced;
the suspension string structure provided by the invention determines the failure sequence of each component in the overhead transmission line based on the mechanical strength matching theory, and each component can be damaged according to the failure sequence of hardware fittings, insulators, the overhead transmission line and the iron tower under extreme or special conditions, so that other components of the overhead transmission line are protected, the overhead transmission line and the iron tower cannot be easily damaged, the rush-repair workload of the suspension string is reduced, the rush-repair efficiency is improved, and the economic loss is reduced;
in the suspension string structure provided by the invention, the socket hanging plate is formed through a forging process and a machining process, the U-shaped hanging rings in the first ring structure (17) and the second ring structure (9) are formed through two forging processes, the strength grades of the rod diameter of the socket hanging plate and the rod diameter of the U-shaped hanging ring are specifically reduced, the socket hanging plate (8) and the U-shaped hanging ring are both set as weak links, and the failure sequence of each component is ensured;
the suspension wire clamp is also set as a weak link, namely when unbalanced tension on the left side and the right side of the suspension wire clamp is overlarge, the overhead transmission line is released along the direction of the overhead transmission line by breaking the wire clamp pressing plate (14) or breaking the bolt, and the iron tower is prevented from being damaged due to the influence of the tension.
Drawings
FIG. 1 is a schematic view of a pendant string configuration according to an embodiment of the present invention;
FIG. 2 is a front view of a suspension clamp in an embodiment of the invention;
FIG. 3 is a side view of a suspension clamp in an embodiment of the present invention;
FIG. 4 is a front view of a U-shaped suspension loop/back-to-back connected U-shaped structure in an embodiment of the present invention;
FIG. 5 is a right side view of a U-shaped link/back-to-back connected U-shaped structure link in an embodiment of the present invention;
FIG. 6 is a front view of the socket clevis in the embodiment of the present invention;
FIG. 7 is a side view of a clevis eye according to an embodiment of the present invention;
FIG. 8 is a top view of the clevis eye of the embodiment of the present invention;
FIG. 9 is a front view of a UB peg board in an embodiment of the present invention;
FIG. 10 is a side view of a UB peg board in an embodiment of the present invention;
FIG. 11 is a front view of a ball mount in an embodiment of the present invention;
FIG. 12 is a side view of a ball mount in an embodiment of the present invention;
in the figure, 1, EB hanging plate, 2, third ring structure, 3, DB adjusting plate, 4, TP adjusting plate, 5, ball head hanging ring, 6, insulator, 7, equalizing ring, 8, socket hanging plate, 9, second ring structure, 10, suspension connecting plate, 11, suspension clamp, 12, weight piece, 13, boat-shaped clamp body, 14, clamp pressing plate, 15, UB hanging plate, 16, U-shaped hanging ring, 17 and first ring structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention provides a suspension string structure, wherein an overhead transmission line is suspended/anchored on an iron tower by the suspension string structure, and the suspension string structure is V-shaped and comprises a suspension string left limb, a suspension string right limb, a first ring structure 17, a second ring structure 9 and a suspension structure;
the left limb of the suspension string is positioned at the upper left of the suspension structure and is connected with the suspension structure through a first ring structure 17, the right limb of the suspension string is positioned at the upper right of the suspension structure and is connected with the suspension structure through a second ring structure 9, the sizes of the first ring structure 17 and the second ring structure 9 are in proportion to the design breaking load of the suspension string structure, and the first ring structure 17 and the second ring structure 9 are determined to be weak links based on the design breaking load.
The suspension structure comprises a suspension yoke plate 10, a suspension clamp 11 and a heavy hammer sheet 12;
the suspension connecting plate 10 is provided with hanging holes which are distributed along the circumference in the plane of the suspension connecting plate 10;
the suspension clamp 11 is fixed on the hanging hole through a bolt, the weight piece 12 is fixed at the central position of the suspension connecting plate 10 through a bolt, and the six-split suspension connecting plate is adopted in the embodiment of the invention.
As shown in fig. 2 and 3, the suspension clamp 11 includes a boat-shaped clamp body 13, a clamp pressing plate 14, and a UB hanging plate 15;
the wire clamp pressing plate 14 is used for fixing the overhead transmission line and is connected with the boat-shaped wire clamp body 13 through bolts, namely, the overhead transmission line penetrates through the boat-shaped wire clamp body 13. When the unbalanced tension on the left side and the right side of the suspension clamp is too large, the overhead transmission line is released along the direction of the overhead transmission line by the fracture of the wire clamp pressing plate 14 or the fracture of the bolt, and the iron tower is prevented from being damaged due to the influence of the tension.
As shown in fig. 9 and 10, the upper end of the UB-hanging plate 15 is provided with a first through hole, the lower end thereof is provided with a second through hole, the upper end of the UB-hanging plate 15 is connected with the suspension link plate 10 through the first through hole and a bolt, and the lower end thereof is connected with the top of the boat-shaped wire clamp body 13 through the second through hole and a bolt.
The first through hole is a cloud-shaped through hole, so that relative movement of the bolt in the cloud-shaped through hole is ensured, and the shape of the first through hole is as shown in fig. 9; the second through hole is a circular through hole.
The left limb and the right limb of the suspension string respectively comprise an equalizing ring 7, and an EB hanging plate 1, a third ring structure 2, a DB adjusting plate 3, a TP adjusting plate 4, a U-shaped hanging ring 16, a ball head hanging ring 5, an insulator 6 and a socket head hanging plate 8 which are connected in sequence through bolts;
the EB hanging plate 1 is hung on an iron tower, and the equalizing ring 7 is sleeved on the outer side of the insulator 6.
The third loop structure 2 comprises two U-shaped suspension loops connected back to back.
The hanging ring of one U-shaped structure of the first ring structure/the second ring structure is connected with the socket hanging plate 8, and the hanging ring of the other U-shaped structure is connected with the suspension yoke plate 10.
The hanging ring of one of the U-shaped structures of the third ring structure 2 is connected with the EB hanging plate 1, and the hanging ring of the other U-shaped structure is connected with the DB adjusting plate 3.
Because the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are all rod diameter structures, the sizes of the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are determined based on the design breaking load of the suspension string structure, the actual breaking load is more than 1.2 times of the design breaking load, the embodiment of the invention is 1.2 times, and the concrete steps are as follows:
when the designed damage load of the suspension string structure is 210kN, the rod diameters of the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are all designed to be 18.5mm, and the rod diameters can enable the practical damage load to reach 252kN, so that the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are damaged;
when the damage load on the suspension string structure is 550kN, the rod diameters of the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are all designed to be 28mm, and the rod diameters can enable the actual damage load to reach 660kN, so that the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are damaged;
when the damage load borne by the suspension string structure is 840kN, the rod diameters of the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are all designed to be 38mm, and the rod diameters can enable the actual damage load to reach 1008kN, so that the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are damaged;
in order to design the sizes, the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back are formed through two forging processes, the strength levels of the rod diameters of the U-shaped hanging ring 16, the ball head hanging ring 5 and the hanging rings of the U-shaped structures connected back to back can be reduced, the specific structures of the U-shaped hanging ring 16/the hanging rings of the U-shaped structures connected back to back are shown in fig. 4 and 5, the specific structures of the ball head hanging ring 5 are shown in fig. 11 and 12, the bowl head hanging plate 8 is formed through the forging process and the machining process, the strength level of the rod diameter of the bowl head hanging plate 8 is reduced, and the specific structures of the bowl head hanging plate 8 are shown in fig. 6-8. The ball head hanging ring 5, the socket hanging plate 8 and the U-shaped hanging ring are all set to be weak links, and the failure sequence of each component is guaranteed.
The number of the suspension clamps 11 is 2-8, and is even, and in the embodiment of the invention, 6 suspension clamps are adopted, as shown in fig. 1; the centers of the respective suspension clamps 11 are located on the circumferences of the same circle.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalents to the specific embodiments of the present invention with reference to the above embodiments, and such modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention as set forth in the claims.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249396.2A CN111030016B (en) | 2019-12-09 | 2019-12-09 | A hanging string structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249396.2A CN111030016B (en) | 2019-12-09 | 2019-12-09 | A hanging string structure |
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| Publication Number | Publication Date |
|---|---|
| CN111030016A true CN111030016A (en) | 2020-04-17 |
| CN111030016B CN111030016B (en) | 2025-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911249396.2A Active CN111030016B (en) | 2019-12-09 | 2019-12-09 | A hanging string structure |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05292636A (en) * | 1992-04-09 | 1993-11-05 | Furukawa Electric Co Ltd:The | Overhead power line suspension support device |
| JP2001037056A (en) * | 1999-07-19 | 2001-02-09 | Seiichiro Hirano | Method for lightening iron tower by narrow wire interval |
| US20050081458A1 (en) * | 2003-10-15 | 2005-04-21 | Mcdonald Richard A. | Breakaway support for overhead lines |
| CN201188525Y (en) * | 2008-03-11 | 2009-01-28 | 成都电力金具总厂 | Suspension loop for bowls head |
| CN101521363A (en) * | 2008-02-26 | 2009-09-02 | 北京国网富达科技发展有限责任公司 | Protecting method, device and system for electric power pylon |
| CN201549282U (en) * | 2009-09-18 | 2010-08-11 | 成都电力金具总厂 | Single-joint V-shaped suspension insulator string used for UHV transmission line |
| CN203260430U (en) * | 2013-04-18 | 2013-10-30 | 中国电力工程顾问集团中南电力设计院 | Suspension insulator string applicable to large height difference |
| CN104376934A (en) * | 2014-11-20 | 2015-02-25 | 国家电网公司 | Compact type tri-connection V-shaped suspension string for light-ice area |
| CN206673527U (en) * | 2017-05-03 | 2017-11-24 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of scissors crossing double hanging point ground wire strain insulator-string |
| CN209184193U (en) * | 2018-10-08 | 2019-07-30 | 国核电力规划设计研究院有限公司 | Duplex suspension string |
| CN110137889A (en) * | 2019-06-21 | 2019-08-16 | 陕西臻源电力科技服务有限公司 | A kind of anti-dancing device of New Damping type |
-
2019
- 2019-12-09 CN CN201911249396.2A patent/CN111030016B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05292636A (en) * | 1992-04-09 | 1993-11-05 | Furukawa Electric Co Ltd:The | Overhead power line suspension support device |
| JP2001037056A (en) * | 1999-07-19 | 2001-02-09 | Seiichiro Hirano | Method for lightening iron tower by narrow wire interval |
| US20050081458A1 (en) * | 2003-10-15 | 2005-04-21 | Mcdonald Richard A. | Breakaway support for overhead lines |
| CN101521363A (en) * | 2008-02-26 | 2009-09-02 | 北京国网富达科技发展有限责任公司 | Protecting method, device and system for electric power pylon |
| CN201188525Y (en) * | 2008-03-11 | 2009-01-28 | 成都电力金具总厂 | Suspension loop for bowls head |
| CN201549282U (en) * | 2009-09-18 | 2010-08-11 | 成都电力金具总厂 | Single-joint V-shaped suspension insulator string used for UHV transmission line |
| CN203260430U (en) * | 2013-04-18 | 2013-10-30 | 中国电力工程顾问集团中南电力设计院 | Suspension insulator string applicable to large height difference |
| CN104376934A (en) * | 2014-11-20 | 2015-02-25 | 国家电网公司 | Compact type tri-connection V-shaped suspension string for light-ice area |
| CN206673527U (en) * | 2017-05-03 | 2017-11-24 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of scissors crossing double hanging point ground wire strain insulator-string |
| CN209184193U (en) * | 2018-10-08 | 2019-07-30 | 国核电力规划设计研究院有限公司 | Duplex suspension string |
| CN110137889A (en) * | 2019-06-21 | 2019-08-16 | 陕西臻源电力科技服务有限公司 | A kind of anti-dancing device of New Damping type |
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| Publication number | Publication date |
|---|---|
| CN111030016B (en) | 2025-10-21 |
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