CN104252927A - Combined type strain insulator string with composite insulator of overhead transmission line - Google Patents
Combined type strain insulator string with composite insulator of overhead transmission line Download PDFInfo
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- CN104252927A CN104252927A CN201410535777.8A CN201410535777A CN104252927A CN 104252927 A CN104252927 A CN 104252927A CN 201410535777 A CN201410535777 A CN 201410535777A CN 104252927 A CN104252927 A CN 104252927A
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Abstract
The invention discloses a combined type strain insulator string with a composite insulator of an overhead transmission line. The combined type strain insulator string comprises a U-shaped tower connecting ring (1), an extension ring (2), a U-shaped ring (3), a connecting plate (4), right-angled hanging plates (5), ball eyes (6), composite insulators (7), socket-clevis eyes (8), two pairs of U-shaped inner arc rings (9) connected in a ring-and-ring manner, another ball eye (6), one to two antifouling porcelain insulators or glass insulators (10), another socket-clevis eye (8), another connecting plate (4), another right-angled hanging plate (11), an adjusting plate (12), a U-shaped ring (13), a strain clamp (14) and a carbon fiber composite core conductor (15). The antifouling porcelain insulators (or the glass insulators) are additionally arranged a the high-voltage ends of the composite insulators; through the utilization of the characteristics of high temperature resistance of the antifouling porcelain insulators or glass insulators, the problem that the mechanical property of the composite insulators is reduced under the condition that the conductor temperature of the overhead transmission line adopting the carbon fiber composite core conductor is 120-180 DEG C is solved, the composite insulator strings with the porcelain cores are enabled to work safely and reliably in the overhead transmission line adopting the carbon fiber composite core conductor, and the life cycle is reached, the connection is reliable, and the combined type strain insulator string is free from cleaning.
Description
Technical field:
The present invention relates to a kind of 35 ~ 500kV overhead power transmission line composite insulator composite type strain insulator-string, belong to the design of electric power system overhead transmission line, operation, maintenance field.
Background technology:
According to open source literature, so far, existing 2 about the patent of composite insulator suspension string, be described below respectively:
Combined insulator string (ZL200920119357.6): it discloses a kind of combined insulator string, comprise the composite rod insulator of main part, it is characterized in that at least being provided with dish-type glass insulator at side of wire on described shape suspended compound insulator.Side of wire dish-type glass insulation quantum count is 1 ~ 6, preferably 4 ~ 6.It has the advantage of plate-shaped suspension type insulator string and composite rod insulator concurrently, both there is very high anti-pollution characteristic, very high puncture voltage can be born, good electric erosion resistance energy, radio interference level is low, leakage current is little, Lightning performance is strong, overcomes again simultaneously and adopts separately dish-type porcelain suspension insulator to occur zero resistance insulator thus cause very large impact to operation of power networks or adopt separately poor or that employing composite rod insulator Lightning performance is poor etc. the separately defect of dish-type glass suspension insulator antifouling capacity.
Suspension type composite insulator (patent No. ZL201220696317.X): it discloses a kind of suspension type composite insulator, comprise composite insulator string and disk-like glass insulator string, described composite insulator string lower end is articulated with disk-like glass insulator string top, and single dish type glass insulator is hinged up and down forms by several for described disk-like glass insulator string.Adopt bulb hinged anatomical connectivity between composite insulator string and disk-like glass insulator string, can reduce to act on the bending load on composite insulator and eccentric load, protection composite insulator.Meanwhile, disk-like glass insulator string weight is large, has the effect of weight concurrently, significantly reduces the windage yaw phenomenon that insulator string produces, avoids the generation of windage yaw discharge accident, guarantee the safety of transmission line.
The people such as State Network Electric Power Research Institute Zhang Rui publish thesis " experimental study that composite insulator is applied to carbon fiber composite core wire enlarging project " in " high voltage technique " the 10th phase in 2011.Introduce in literary composition: carbon fiber composite core wire has the advantages such as high temperature resistant, ampacity is large, allowable temperature even can more than 200 DEG C in short-term for they, if use composite insulator, when its high temperature is delivered to composite insulator high voltage end, the crimp strength performance of plug, silastic material and metal-ware bonding pad can be affected, time serious, string accident can be caused.For this reason, from theory calculate, verification experimental verification, analysis on Operating, 4 aspects such as analogue test, analyze under hot operation condition, thermo parameters method situation and the key factor affecting composite insulator runnability of composite insulator high voltage end, and according to the first #1 line of the Liaoning Area 220kV the Liao Dynasty actual motion composite insulator of 2 years electric under ACCC-713 Carbon fiber alloy wire, Mechanical Property Analysis, and in laboratory conditions, the mechanical performance result of variations of composite insulator at different tests temperature, Attention question and suggestion is answered when proposing practical application.Research shows, along with the rising of electric insulator steel foot temperature, composite insulator intensity declines gradually, can be reduced to 50% of initial strength under 180 DEG C of conditions.
From above data, published 2 two patents belong to wire suspension string aspect, some dish-type glass insulators are increased at the high-pressure side of composite insulator, object is to improve puncture voltage and electric erosion resistance energy, reducing insulator string windage yaw, do not consider when adopting carbon fiber composite core wire, conductor temperature in 180 DEG C of situations, on the impact of combined insulator string mechanical performance; So far, composite insulator strain insulator-string patent is not still had.
The strain insulator-string applied in current electrical network mainly contains following 4 kinds: porcelain insulator strain insulator-string, glass insulator strain insulator-string, composite insulator tension string and porcelain core composite insulator tension string; Guo Wang company progressively eliminates first two, main consideration first two insulator strain string needs cleaning, maintenance workload is large, in addition, composite insulator is used for large-tonnage strain insulator-string, being in careful state always, mainly considering that composite insulator is produced mechanical performance decline situation because turning round in running.
Adopt the bulb hinged anatomical connectivity of conventional between published 2 two patent requirements composite insulator strings and disk-like glass insulator string, but once to there is 220kV strain insulator-string in Yantai electrical network fall string because composite insulator is connected with dish type porcelain insulator ball pivot until Yantai electrical network and economize net off-the-line significant blackouts accident.Therefore, published 2 two patents are defective in connection, are unsuitable for the assembling of strain insulator-string.
Still there is no carbon fiber composite core wire at present in high temperature, During Process of Long-term Operation to the test report of composite suspension insulator string electric property impact or operating experience.Therefore, adopting the combination of safe and reliable composite insulator tension string and 1 antifouling porcelain insulator or glass insulator, is necessary.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art and a kind of mechanical performance guaranteeing composite insulator is provided, guarantee composite insulator safe and reliable operation in the overhead transmission line adopting carbon fiber composite core wire, reach life cycle management, connect reliable, to exempt from cleaning overhead power transmission line composite insulator composite type strain insulator-string.
Object of the present invention can be reached by following measure: a kind of overhead power transmission line composite insulator composite type strain insulator-string, it is characterized in that it comprises the U-shaped ring of connection tower, the U-shaped ring of connection tower connects prolongation ring, extend ring and connect U-shaped ring, U-shaped ring connects yoke plate, the two ends of yoke plate connect a right angle link plate respectively, each right angle link plate all connects a ball-eye, each ball-eye all connects a composite insulator string, each composite insulator string all connects a socket-clevis eye, 2 pairs of U-shaped rings of inner arc that the equal connecting ring-ring of each socket-clevis eye connects, 2 pairs of U-shaped rings of inner arc that each ring-ring connects all connect a ball-eye, each ball-eye connects 1 ~ 2 antifouling porcelain insulator or glass insulator, antifouling porcelain insulator or glass insulator connect socket-clevis eye, two socket-clevis eyes are connected to the two ends of yoke plate, connection right angle, the middle part link plate of yoke plate, right angle link plate connection adjustment plate 1 adjusts plate and connects U-shaped ring, U-shaped ring connects strain clamp, strain clamp connects carbon fiber composite core wire.
In order to realize object of the present invention further, described antifouling porcelain insulator or glass insulator are 1 ~ 2.
The present invention can produce following good effect compared with the prior art: one is adopt composite insulator in strain insulator-string, exempts from cleaning; Two is install antifouling porcelain insulator or glass insulator additional at composite insulator high-pressure side, plays heat-blocking action, guarantees the mechanical performance of composite insulator; Three are, the U-shaped ring of 2 pairs of inner arcs connected with ring-ring between composite insulator with porcelain insulator is connected, composite insulator and porcelain insulator is avoided to come off, and ball-eye, the socket-clevis eye of supporting connection gold utensil, avoid crimp, cause bulb to be deviate from from ball-and-socket, reach life cycle management design concept.Therefore the present invention has the advantage that insulator string connects reliably, exempts from cleaning, string accident can not be fallen in running, antifouling porcelain insulator or glass insulator be easy contamination in long term high temperature, low temperature alternate run, in insulation coordination design, do not need the insulation property considering antifouling porcelain insulator or glass insulator, only need to consider its heat insulating function and mechanical performance, guarantee porcelain core composite insulator string group safe and reliable operation in the overhead transmission line adopting carbon fiber composite core wire.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Embodiment: preferred forms of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment: a kind of overhead power transmission line composite insulator composite type strain insulator-string (see Fig. 1), it is as follows successively to live end from earth terminal: the U-shaped ring 1 of U-1695 type connection tower, PH-12120 type extends ring 2, the U-shaped ring 3 of U-1290 type, L-12-70/400 type yoke plate 4, be divided into two again, often join by right angle link plate 5, QP-0750 type ball-eye 6, FXBW-110/120-3 type composite insulator string 7, socket-clevis eye 8, the U-shaped ring 9 of 2 pairs of inner arcs that ring-ring connects, ball-eye 6, 1 antifouling porcelain insulator of XWP2-7 type or glass insulator 10, socket-clevis eye 8 is formed, then 1 string is combined into by L-12-70/400 type yoke plate 4, then Z-12100 type right angle link plate 11 is followed successively by, DB-12100-240 type adjustment plate 12, the U-shaped ring 13 of U-1290 type, NY-300/40A type strain clamp 14 and carbon fiber composite core wire 15, above-mentioned parts can select other models as required.The U-shaped ring 1 of connection tower connects prolongation ring 2, extend ring 2 and connect U-shaped ring 3, U-shaped ring 3 connects yoke plate 4, the two ends of yoke plate 4 connect a right angle link plate 5 respectively, each right angle link plate 5 all connects a ball-eye 6, each ball-eye 6 all connects a composite insulator string 7, each composite insulator string 7 all connects a socket-clevis eye 8, the U-shaped ring 9 of 2 pairs of inner arcs that the equal connecting ring-ring of each socket-clevis eye 8 connects, the U-shaped ring 9 of 2 pairs of inner arcs that each ring-ring connects all connects a ball-eye 6, each ball-eye 6 connects 1 ~ 2 antifouling porcelain insulator or glass insulator 10, antifouling porcelain insulator or glass insulator 10 connect socket-clevis eye 8, two socket-clevis eyes 8 are connected to the two ends of yoke plate 4, connection right angle, the middle part link plate 11 of yoke plate 4, right angle link plate 11 connects adjustment plate 12, adjustment plate 12 connects U-shaped ring 13, U-shaped ring 13 connects strain clamp 14, strain clamp 14 connects carbon fiber composite core wire 15.The heat that high-pressure side carbon fiber composite core wire 15 produces at 120 ~ 180 DEG C of high temperature, by increase by 1 ~ 2 antifouling porcelain insulator of XWP2-7 type or glass insulator 10, is reduced to minimum, guarantees the electric property of composite insulator 7 by the present invention to greatest extent; Composite insulator 7 is connected with the U-shaped ring 9 of 2 pairs of inner arcs connected with ring-ring between porcelain insulator or glass insulator 10, avoids composite insulator 7 to come off with porcelain insulator or glass insulator 10.
Claims (2)
1. an overhead power transmission line composite insulator composite type strain insulator-string, it is characterized in that it comprises the connection U-shaped ring of tower (1), the connection U-shaped ring of tower (1) connects prolongation ring (2), extend ring (2) and connect U-shaped ring (3), U-shaped ring (3) connects yoke plate (4), the two ends of yoke plate (4) connect a right angle link plate (5) respectively, each right angle link plate (5) all connects a ball-eye (6), each ball-eye (6) all connects a composite insulator string (7), each composite insulator string (7) all connects a socket-clevis eye (8), 2 pairs of U-shaped rings of inner arc (9) that the equal connecting ring-ring of each socket-clevis eye (8) connects, 2 pairs of U-shaped rings of inner arc (9) that each ring-ring connects all connect a ball-eye (6), each ball-eye (6) connects 1 ~ 2 antifouling porcelain insulator or glass insulator (10), antifouling porcelain insulator or glass insulator (10) connect socket-clevis eye (8), two socket-clevis eyes (8) are connected to the two ends of yoke plate (4), the connection right angle, middle part link plate (11) of yoke plate (4), right angle link plate (11) connects adjustment plate (12), adjustment plate (12) connects U-shaped ring (13), U-shaped ring (13) connects strain clamp (14), strain clamp (14) connects carbon fiber composite core wire (15).
2. a kind of overhead power transmission line composite insulator composite type strain insulator-string according to claim 1, is characterized in that described antifouling porcelain insulator or glass insulator (10) are 1 ~ 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535777.8A CN104252927A (en) | 2014-10-13 | 2014-10-13 | Combined type strain insulator string with composite insulator of overhead transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410535777.8A CN104252927A (en) | 2014-10-13 | 2014-10-13 | Combined type strain insulator string with composite insulator of overhead transmission line |
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| CN104252927A true CN104252927A (en) | 2014-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766679A (en) * | 2018-05-25 | 2018-11-06 | 华润电力风能（阳江）有限公司 | Single conductor duplex pendency composite insulator |
| CN108766678A (en) * | 2018-05-25 | 2018-11-06 | 华润电力风能（阳江）有限公司 | Single conductor double strain composite insulator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10324443A1 (en) * | 2003-05-28 | 2004-12-16 | Thales Broadcast & Multimedia Gmbh | Isolators for use with electrical overhead cables are mounted with steel retaining bars to protect against mechanical failure |
| CN101615454A (en) * | 2009-05-07 | 2009-12-30 | 金华电业局 | Combined insulator string |
| CN102280227A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator tension string of overhead transmission line |
| CN202940071U (en) * | 2012-12-14 | 2013-05-15 | 山东电力集团公司电力科学研究院 | Suspension type combination insulator |
| CN203659541U (en) * | 2014-01-20 | 2014-06-18 | 国家电网公司 | Three umbrella-type suspension insulator string applied to converter station |
| CN204215824U (en) * | 2014-10-13 | 2015-03-18 | 国家电网公司 | A kind of overhead power transmission line composite insulator composite type strain insulator-string |
-
2014
- 2014-10-13 CN CN201410535777.8A patent/CN104252927A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10324443A1 (en) * | 2003-05-28 | 2004-12-16 | Thales Broadcast & Multimedia Gmbh | Isolators for use with electrical overhead cables are mounted with steel retaining bars to protect against mechanical failure |
| CN101615454A (en) * | 2009-05-07 | 2009-12-30 | 金华电业局 | Combined insulator string |
| CN102280227A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator tension string of overhead transmission line |
| CN202940071U (en) * | 2012-12-14 | 2013-05-15 | 山东电力集团公司电力科学研究院 | Suspension type combination insulator |
| CN203659541U (en) * | 2014-01-20 | 2014-06-18 | 国家电网公司 | Three umbrella-type suspension insulator string applied to converter station |
| CN204215824U (en) * | 2014-10-13 | 2015-03-18 | 国家电网公司 | A kind of overhead power transmission line composite insulator composite type strain insulator-string |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766679A (en) * | 2018-05-25 | 2018-11-06 | 华润电力风能（阳江）有限公司 | Single conductor duplex pendency composite insulator |
| CN108766678A (en) * | 2018-05-25 | 2018-11-06 | 华润电力风能（阳江）有限公司 | Single conductor double strain composite insulator |
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Application publication date: 20141231 |