CN203983918U - The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV - Google Patents
The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV Download PDFInfo
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- CN203983918U CN203983918U CN201420411569.2U CN201420411569U CN203983918U CN 203983918 U CN203983918 U CN 203983918U CN 201420411569 U CN201420411569 U CN 201420411569U CN 203983918 U CN203983918 U CN 203983918U
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Abstract
The utility model provides the two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV, comprise support and the wire clip body being hinged, wire clamp pressing plate, wire clip body is flexibly connected with support, wire clamp pressing plate and the groove being positioned on the wire clamp chuck of wire clip body end arrange respectively ring-shaped rubber liner, wire clip body arranges two, and be in the shape of the letter V and be movably connected in support two ends, at support and wire clip body connecting portion, vibration damping device is all set, the first reinforcement of annular spread is set respectively at two links of the support being connected with wire clip body, the second reinforcement and the 3rd reinforcement.This conductor spacer can the aeolian vibration of dehancer wire and subspan oscillation, improve the vibration damping performance of conductor spacer, and strengthen conductor spacer and bear the mechanical load under installation, maintenance and service conditions, guarantee safety, the reliability service of the above ultra-high-tension power transmission line of 500kV, there is the outstanding advantages such as simple in structure, bearing load ability height.
Description
Technical field
The utility model relates to electric power transmission line conductor spacer technical field, especially relates to the two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV.
Background technology
Conductor spacer is the requisite protection gold utensil of transmission line bundle conductor, and it not only can keep the spacing between oidiospore wire, also can play the whiplash preventing between wire, the effect that suppresses aeolian vibration and subspan oscillation.Existing rotary type conductor spacer is to use stainless steel track, between track interlayer and slide block, design certain interval, rotate flexibly, the brandishing causing although it can prevent the inhomogeneous icing of wire, but may there are following two kinds of problems: first, owing to being matched in clearance between track interlayer and slide block, rather than damping structure, can weaken like this inhibitory action of conductor spacer to gentle breeze vibration, heavy icing area circuit particularly, generally only join conductor spacer and be unworthy of stockbridge damper, therefore just lack necessary gold utensil and suppress gentle breeze and vibrated.The second, because track is in the relative outside of wire clamp, be directly exposed in natural environment, if meet with the extreme weathers such as sleet, severe cold, first the track that is exposed to outside may freeze and lose cornering rate, also just cannot play the effect of Anti-galloping.
For ultra-high-tension power transmission line more than 500kV, because electric pressure is very high, and it is often larger by way of regional climate change, even also may be by way of heavy ice-covering area, therefore its operation risk is larger.In the above High Voltage Transmission Line Engineering of existing 500kV, select JLHA1/G1A-1250/100 aluminium alloy conductors steel all to belong to first Application at home and abroad, have well perspective and promotional value, this diameter of wire is 47.85 millimeters, and sectional area of wire reaches 1250 square millimeters.For this large-section lead, because himself weight is very heavy, add it often more severe by way of local climate condition, therefore, the safety of the above ultra-high-tension power transmission line of 500kV, reliability service just suppress sub-conductor aeolian vibration and the ability of subspan oscillation and the mechanical load that self can bear to conductor spacer and have proposed very high index request, and existing rotary type conductor spacer and general transmission line quadripartion serial type and gold utensil used all can not meet the above High Voltage Transmission Line Engineering demand of 500kV completely.
Utility model content
The technical problems to be solved in the utility model is: the problem existing for prior art, the two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV are provided, not only vibration damping performance is strong, and it is high to bear mechanical load ability, can meet well the specific demand of ultra-high-tension power transmission line safety, reliability service.
The technical problems to be solved in the utility model realizes by the following technical solutions: the two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV, comprise support and the wire clip body being hinged, wire clamp pressing plate, described wire clip body is flexibly connected with support, described wire clamp pressing plate and the groove being positioned on the wire clamp chuck of wire clip body end arrange respectively ring-shaped rubber liner, described wire clip body arranges two, and be in the shape of the letter V and be movably connected in support two ends, at support and wire clip body connecting portion, vibration damping device is all set, the first reinforcement of annular spread is set respectively at two links of the support being connected with wire clip body, the second reinforcement and the 3rd reinforcement.
Preferably, described vibration damping device is mainly comprised of cross guide and cylindrical rubber post, and described cross pin cover is inlaid on wire clip body, and described cylindrical rubber post is inlaid in cross guide and the formed cavity of wire clip body with interference fit.
Preferably, described cylindrical rubber post arranges 16, at two connecting portions of support and wire clip body, arranges respectively 8, and 8 cylindrical rubber posts that are positioned at same connecting portion place are divided into two-layerly, lays respectively at wire clip body both sides.
Preferably, the damping coefficient of described cylindrical rubber post under-40-+40 ℃, 25Hz condition is 0.4-0.1.
Preferably, described support is in-line structure, at the wire clip body at support two ends and the inclination angle between support level part, is 30 degree.
Preferably, described support level is reserved two lifting hole(eyelet)s partly, and the center line between described two lifting hole(eyelet)s overlaps with the center line of support.
Preferably, at the first reinforcement of the same link of described support, angle between the second reinforcement, equate with angle between the second reinforcement, the 3rd reinforcement and be all greater than the angle between the first reinforcement, the 3rd reinforcement.
Preferably, form screw thread be flexibly connected between described wire clip body and support by eye bolt, slotted nut, the first split pin that runs through eye bolt in the setting of eye bolt end is slotted nut fixedly.
Preferably, the 4th reinforcement near wire clamp chuck is also set on described wire clip body.
Preferably, described wire clip body and wire clamp pressing plate close up fixedly after transmission pressure, and joint shaft pin center and the distance between the center line of described transmission pressure of described support and wire clip body connecting portion are 150mm.
Compared with prior art, the beneficial effects of the utility model are: because conductor spacer overall structure is bow-shaped structural, make transmission pressure become two division layouts, and by vibration damping device being all set at support and wire clip body connecting portion, thereby can the aeolian vibration of dehancer wire and subspan oscillation, and make conductor spacer distribution of force more balanced, improved the vibration damping performance of conductor spacer, avoid, under transmission line normal running (operation) conditions, transmission pressure is caused to damage; Simultaneously, by the first reinforcement, the second reinforcement and the 3rd reinforcement of annular spread are set respectively at two link joints of support, greatly improve conductor spacer and born the mechanical load under installation, maintenance and service conditions, the mechanical load that the active force producing while comprising line short and operating temperature, ambient temperature etc. cause, has met the above ultra-high-tension power transmission line of 500kV and has moved safely, reliably the engine request to conductor spacer.
Accompanying drawing explanation
Fig. 1 is the structural map of the two cracking separation rods of damp type for the above ultra-high-tension power transmission line of the utility model 500kV.
Fig. 2 is that B in Fig. 1 is to view.
Fig. 3 is the structure chart of Fig. 1 medium-height trestle.
Fig. 4 is the front view of wire clip body in Fig. 1.
Fig. 5 is the vertical view of wire clip body in Fig. 1.
Figure middle part product token name claims: 1-wire clip body, 2-wire clamp pressing plate, 3-rubber packing, 4-hinge axis, 5-support, 6-the first split pin, 7-bolt, 8-nut, 9-plain washer, 10-reference rounds pad, 11-bearing pin, 12-the second split pin, 13-cross guide, 14-cylindrical rubber post, 15-lifting hole(eyelet), 16-the first reinforcement, 17-the second reinforcement, 18-the 3rd reinforcement, 19-the 4th reinforcement, 20-wire clamp chuck.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the drawings and specific embodiments, the utility model is elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In the present embodiment, the applicable transmission pressure of conductor spacer is selected JLHA1/G1A-1250/100 aluminium alloy conductors steel, and its diameter is 47.85 millimeters, and sectional area of wire reaches 1250 square millimeters, calculates pull-off force and reaches 509130N.As shown in Figure 1 and Figure 2, described conductor spacer mainly comprises wire clip body 1, wire clamp pressing plate 2 and support 5, is hinged, with convenient for assembly between the wire clamp chuck 20 on described wire clip body 1 and wire clamp pressing plate 2 by hinge axis 4, because transmission pressure sectional area reaches 1250 square millimeters, in order to make 1 pair of transmission pressure of wire clip body have enough grips, and make wire respectively to stressed even, protect better transmission pressure not to be damaged simultaneously, the online groove that clamps plate 2 and be positioned on the wire clamp chuck 20 of wire clip body 1 end arranges respectively ring-shaped rubber liner 3, wire clamp pressing plate 2 can rotate with respect to wire clip body 1 around hinge axis 4, and by rubber packing 3 clamping transmission pressures, after wire clamp pressing plate 2 compression transmission pressures put in place, by bearing pin 11 and the second split pin 12, cooperatively interact and make wire clamp pressing plate 2 fixing with wire clip body 1 again, adjust the decrement of rubber packing 3, can guarantee the fair line grip of conductor spacer, effectively prevent getting loose of transmission pressure.Described wire clip body 1 arranges two, and is in the shape of the letter V and is movably connected in support 5 two ends, makes conductor spacer overall structure become a bow-shaped structural, and transmission pressure is arranged in conductor spacer two ends by apportion.
The structure of above-mentioned support 5 as shown in Figure 3, its overall structure is in-line, both ends are the joint part being flexibly connected with wire clip body 1, this joint part length is less than support 5 horizontal component length, and this joint part and support 5 horizontal components form 30 degree angles, after support 5 two ends are connected with wire clip body 1 respectively, at the wire clip body 1 at support 5 two ends and the inclination angle between support 5 horizontal components, be 30 degree.At support 5 horizontal components, also reserve two lifting hole(eyelet)s 15, and the center line between two lifting hole(eyelet)s 15 overlaps with the center line of support 5, by lifting hole(eyelet) 15, can conveniently lift conductor spacer, simultaneously, after lifting completes, can also utilize the anti-dancing device of this lifting hole(eyelet) 15 assembling, thereby reduced, on support 5, offer unnecessary installing hole, be conducive to improve the mechanical strength of support 5.The first reinforcement 16, the second reinforcement 17 and the 3rd reinforcement 18 of annular spread are set respectively at 5 two links of the support being connected with wire clip body 1, and at the first reinforcement 16 of support 5 same links, angle between the second reinforcement 17, equate and be all greater than the angle between the first reinforcement 16, the 3rd reinforcement 18 with the angle between the second reinforcement 17, the 3rd reinforcement 18, the angle between described the first reinforcement 16 and the 3rd reinforcement 18 is 80 degree.Adopt said structure not only to make support 5 compact conformations, and its distribution of force is also more reasonable, has greatly improved the mechanical load ability of support 5, is conducive to guarantee transmission line safety, reliability service.
Tolerance short circuit current centripetal force is the leading indicator to conductor spacer Performance Assessment, is the aspect playing a decisive role in its technical conditions.When this conductor spacer is applicable to JLHA1/G1A-1250/100 aluminium alloy conductors steel, the running tension of transmission line calculates 25% of pull-off force according to transmission pressure and calculates, according to IEC conductor spacer centripetal force formula:
In above-mentioned formula:
Fmax-tolerance short circuit current centripetal force maximum,
Icc-short-circuit current value, general value 50KA, is equivalent to standard value,
D-transmission pressure diameter,
T-sub-conductor tension force, it calculates value is 25% of wire calculating pull-off force,
S-sub-conductor division diameter,
K-is yarn numerical value fixedly, and two cracking separation rods are got K=1.585.
By D=47.85mm, the above-mentioned formula of S=650mm substitution, in the time of can calculating corresponding short circuit, maximum centripetal force Fmax is 29.74KN, that is to say, whole conductor spacer is when short circuit, should guarantee that it can bear the destructive power of 29.74KN, like this fail safe, the reliability of the above ultra-high-tension power transmission line operation of guarantee 500kV.
Because short circuit centripetal force is had relatively high expectations, thus also very high to the requirement of mechanical strength of wire clamp integral body, for this reason, must carry out necessary intensity and anticorona design to wire clip body 1, strengthen the vibration damping performance of conductor spacer.The structure of described wire clip body 1 as shown in Figure 4, Figure 5, arranges the 4th reinforcement 19 near wire clamp chuck 20, effectively to improve the mechanical load ability of wire clip body 1 on wire clip body 1.Especially, the arc surface that the arc surface of described wire clamp chuck 20 is not partly waited by radius forms, distance between the center of circle of the center of circle of maximum radius circular arc and least radius circular arc is 3mm, the A place arc radius of wire clamp chuck 20 ends is 25mm, adopts this structure can effectively strengthen the anticorona performance of wire clip body 1.As shown in Figure 2, between wire clip body 1 and support 5, be by eye bolt 7, slotted nut 8, to form screw threads to be flexibly connected, the first split pin 6 that runs through eye bolt 7 in eye bolt 7 end settings is slotted nut 8 fixedly; Loosening in order to prevent slotted nut 8, plain washer 9 and reference rounds pad 10 are also set between slotted nut 8 and eye bolt 7.As shown in Figure 1 and Figure 2, at support 5, with the joint portion that is connected between wire clip body 1, vibration damping device is all set, this vibration damping device is mainly comprised of cross guide 13 and cylindrical rubber post 14, when concrete assembling, first cross guide 13 is inlaid on wire clip body 1, recycling specific purpose tool is inlaid in cylindrical rubber post 14 in cross guide 13 and the formed cavity of wire clip body 1 with interference fit, finally by eye bolt 7, is run through the middle through holes of cross guide 13 and wire clip body 1 is flexibly connected and is integral with support 5.
For the above ultra-high-tension power transmission line of 500kV, the sectional area of the transmission pressure of its use is all larger, own wt is also heavier, and the damping capacity of conductor spacer depends on that the performance of its damping element rubber packing 3, cylindrical rubber post 14 and cylindrical rubber post 14 are at the mounting structure of conductor spacer turning joint place.Rubber packing 3 wherein mainly plays the effect of protection transmission pressure, therefore, just very crucial at the cylindrical rubber post 14 of conductor spacer turning joint place.As shown in Figure 1 and Figure 2, described cylindrical rubber post 14 arranges 16 altogether, at support 5 and two connecting portion joints of wire clip body 1, arrange respectively 8, and 8 cylindrical rubber posts 14 that are positioned at same connection joint are divided into two-layerly, lay respectively at wire clip body 1 both sides.The damping coefficient of described cylindrical rubber post 14 under-40-+40 ℃, 25Hz condition is 0.4-0.1.Stressed more reasonable due to cylindrical rubber post, vibration damping performance is more superior, therefore, adopt said structure can guarantee that the conductor spacer assembling possesses good vibration damping performance, the vibration of transmission pressure gentle breeze and subspan oscillation are had to good protective action.In addition, the rubber packing 3 adopting, cylindrical rubber post 14 are except possessing good damping capacity, also should there is certain conductive characteristic, designing requirement according to IEEE about conductor spacer, potential difference between conductor spacer and wire should be less than 300V, between conductor spacer and wire and inside and outside joint, can not produce electric discharge phenomena like this, the security of operation of the above ultra-high-tension power transmission line of assurance 500kV, reliable.When conductor spacer assembles, wire clip body 1 is too short, and wire clamp pressing plate 2 arm of forces are short, and mounting torque is large; But wire clip body 1 is oversize, the moment of flexure of wire clamp integral body is too large, also be not easy to guarantee wire clamp intensity, simultaneously, consider the factors such as the versatility of wire clamp and interchangeability, therefore, when carrying out conductor spacer structural design, after wire clip body 1 and wire clamp pressing plate 2 close up fixedly transmission pressure, definite support 5 wherein and joint shaft pin center and the distance between the center line of transmission pressure of wire clip body 1 connecting portion are 150mm.
Consider that the tolerance short circuit current centripetal force of this conductor spacer has relatively high expectations, also consider the many factors such as production cost, technical process control, product service condition and Engineering Reliability requirement simultaneously, therefore the critical piece of conductor spacer product is made as wire clip body 1, wire clamp pressing plate 2 all adopt high-intensity ZL101A aluminum alloy materials, and carry out T6 heat treatment, its intensity can reach 270-290Mpa, thereby improved conductor spacer, bears the mechanical load ability under installation, maintenance and service conditions.
In the above ultra-high-tension power transmission line of 500kV, the sectional area of transmission pressure used is very large, and by adopting of the present utility model pair of cracking separation rod can reduce wire division number, and the mechanical performance of large-section lead is better, and sag is less, and overload capacity is also stronger.Particularly when icing operating mode, act on steel tower total vertical, level and longitudinal loading all little.Therefore, common conductors on quad bundled serial type and the gold utensil used with general circuit are compared, this double split large cross-section line serial type not only can guarantee that transmission line is constant to the conveying capacity of electric energy, and wind resistance snow ability is stronger, thereby effectively reduced the operation risk of transmission line, the coefficient of safety of power transmission engineering is higher; Meanwhile, be also conducive to alleviate the steel tower quality in transmission line and reduce basic expense, having improved the economy of engineering construction.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; it should be pointed out that all any modifications of doing within spirit of the present utility model and principle, be equal to replacement and improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a 500kV, the wire clip body (1) that comprises support (5) and be hinged, wire clamp pressing plate (2), described wire clip body (1) is flexibly connected with support (5), described wire clamp pressing plate (2) and the groove being positioned on the wire clamp chuck (20) of wire clip body (1) end arrange respectively ring-shaped rubber liner (3), it is characterized in that: described wire clip body (1) arranges two, and be in the shape of the letter V and be movably connected in support (5) two ends, at support (5) and wire clip body (1) connecting portion, vibration damping device is all set, first reinforcement (16) of annular spread is set respectively at (5) two links of the support being connected with wire clip body (1), the second reinforcement (17) and the 3rd reinforcement (18).
2. two cracking separation rods of damp type according to claim 1, it is characterized in that: described vibration damping device is mainly comprised of cross guide (13) and cylindrical rubber post (14), it is upper that described cross guide (13) is inlaid in wire clip body (1), and described cylindrical rubber post (14) is inlaid in cross guide (13) and the formed cavity of wire clip body (1) with interference fit.
3. two cracking separation rods of damp type according to claim 2, it is characterized in that: described cylindrical rubber post (14) arranges 16, at support (5) and two connecting portions of wire clip body (1), arrange respectively 8, and 8 the cylindrical rubber posts (14) that are positioned at same connecting portion place are divided into two-layer, lay respectively at wire clip body (1) both sides.
4. according to the two cracking separation rods of the damp type described in claim 2 or 3, it is characterized in that: the damping coefficient of described cylindrical rubber post (14) under-40-+40 ℃, 25Hz condition is 0.4-0.1.
5. two cracking separation rods of damp type according to claim 1, it is characterized in that: described support (5) is in-line structure, be positioned at the wire clip body (1) at support (5) two ends and the inclination angle between support (5) horizontal component and be 30 degree.
6. two cracking separation rods of damp type according to claim 5, it is characterized in that: described support (5) horizontal component is reserved two lifting hole(eyelet)s (15), and the center line between described two lifting hole(eyelet)s (15) overlaps with the center line of support (5).
7. according to the two cracking separation rods of the damp type described in claim 1,2,3 or 5, it is characterized in that: be positioned at first reinforcement (16), the angle between the second reinforcement (17) of the same link of described support (5) and equate with angle between the second reinforcement (17), the 3rd reinforcement (18) and be all greater than the angle between the first reinforcement (16), the 3rd reinforcement (18).
8. according to the two cracking separation rods of the damp type described in claim 1,2,3 or 5, it is characterized in that: between described wire clip body (1) and support (5), by eye bolt (7), slotted nut (8), form screw thread and be flexibly connected, the first split pin (6) that runs through eye bolt (7) in eye bolt (7) end setting is slotted nut (8) fixedly.
9. according to the two cracking separation rods of the damp type described in claim 1,2,3 or 5, it is characterized in that: the 4th reinforcement (19) near wire clamp chuck (20) is also set on described wire clip body (1).
10. according to the two cracking separation rods of the damp type described in claim 1,2,3 or 5, it is characterized in that: described wire clip body (1) and wire clamp pressing plate (2) close up fixedly after transmission pressure, and joint shaft pin center and the distance between the center line of described transmission pressure of described support (5) and wire clip body (1) connecting portion are 150mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420411569.2U CN203983918U (en) | 2014-07-24 | 2014-07-24 | The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420411569.2U CN203983918U (en) | 2014-07-24 | 2014-07-24 | The two cracking separation rods of damp type for the above ultra-high-tension power transmission line of a kind of 500kV |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105720541A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | V-shaped damping-wire clamp damping wire |
| CN105720542A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Musical-scale type damping wire |
| KR101716083B1 (en) * | 2016-04-26 | 2017-03-14 | 한국전력공사 | Spacer damper for bundle conductor |
| CN107026420A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type |
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2014
- 2014-07-24 CN CN201420411569.2U patent/CN203983918U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720541A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | V-shaped damping-wire clamp damping wire |
| CN105720542A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Musical-scale type damping wire |
| CN105720541B (en) * | 2014-12-04 | 2017-09-01 | 国家电网公司 | A kind of V-arrangement dump wire clamp damping wire |
| CN105720542B (en) * | 2014-12-04 | 2017-09-01 | 国家电网公司 | A kind of scale formula damping wire |
| CN107026420A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type |
| CN107026420B (en) * | 2016-02-02 | 2020-07-24 | 中国电力科学研究院 | Elastic resistance type conductor clamp spacer with half-split number interval |
| KR101716083B1 (en) * | 2016-04-26 | 2017-03-14 | 한국전력공사 | Spacer damper for bundle conductor |
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Owner name: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST Free format text: FORMER NAME: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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| CP01 | Change in the name or title of a patent holder |
Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Patentee after: Chengdu Electric Power Fittings General Factory Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation Patentee before: Chengdu Electric Power Fittings General Factory |