CN203552823U - Umbrella-shaped structure of ultra-high-voltage tension composite insulator - Google Patents
Umbrella-shaped structure of ultra-high-voltage tension composite insulator Download PDFInfo
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- CN203552823U CN203552823U CN201320667400.9U CN201320667400U CN203552823U CN 203552823 U CN203552823 U CN 203552823U CN 201320667400 U CN201320667400 U CN 201320667400U CN 203552823 U CN203552823 U CN 203552823U
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- full skirt
- umbrella
- composite insulator
- skirt
- beveled structure
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Abstract
The utility model discloses an umbrella-shaped structure of an ultra-high-voltage tension composite insulator. The umbrella-shaped structure includes a core rod, a protective sleeve, a plurality of big umbrella skirts which are equal in diameter and a plurality of small umbrella skirts which are equal in diameter. The big umbrella skirts and the small umbrella skirts are arrayed alternatively on the outer surface layer of the protective sleeve. A plurality of fold edges with smaller umbrella extensions are arranged on the outer surface layer of the protective sleeve. The umbrella-shaped structure of the ultra-high-voltage tension composite insulator improves a design concept that composite insulators are used on straight lines and ceramic and glass insulators are used on tension strings so that the pollution flashover resistant capacity of the tension strings of power transmission lines can be improved and maintenance cost is lowered. Thus, the project expands the application range of the composite insulator and developed achievements can provide wider design choices for the design of the power transmission lines and particularly provide a design and type selection basis for type selection of alternating-current and direct-current ultra-high voltage tension strings. Therefore, ceramic or glass insulators used on the tension strings of current overhead lines at present can be replaced equivalently, the building investment of the power transmission lines can be saved and the operation safety of the power transmission lines can be improved.
Description
Technical field
The utility model relates to super UHV Overhead Transmission Line external insulation technical equipment technical field, especially a kind of super ultra high voltage Anti-tension composite insulator beveled structure.
Background technology
Insulator is one of crucial external insulation device affecting overhead transmission line fail safe, the development of nearly 40 years of composite insulator process, and technology reaches its maturity.Composite insulator is because it is lightweight, mechanical strength is high, resistant is dodged the advantages such as performance is good, operation maintenance is convenient and is widely applied in electric power system.At present, have over 2,000,000 and operate on transmission line in all parts of the country.
The full skirt of composite insulator is mainly used to the creepage distance and the not impact of climate of protection plug that provide necessary.But the flashover voltage of composite insulator is subject to the impact of several factors, the combined influence of factors such as air pressure, filthy degree (salt is close, ash is close), humidity, icing situation.Meanwhile, full skirt also can have influence near the Electric Field Distribution of composite insulator.Especially in super extra high voltage line, can the combination of the umbrella shape of composite insulator effectively reduce pollution flashover voltage, is one of key factor being related to overhead transmission line fail safe, is also the object of umbrella shape optimal design.
China is used thinking still to rest in the design concept of " straight line Composite; porcelain, glass for strain insulator-string " to insulator at present, because strain insulator-string is used porcelain and glass insulator, while existing tune to climb, work is more complicated, except too much increase insulator sheet number, also need to adjust conducting wire sag, consider that steel tower is stressed etc., and the deficiency of the anti-pollution flashover ability of strain insulator-string manifests day by day, strain insulator-string is used porcelain insulator also to need regularly to detect null value and cleaning simultaneously, and maintenance cost is higher.
Present stage is used composite insulator tension string comparatively general on 220kV and above transmission line, in superhigh pressure, UHV transmission line, use strain insulator-string also in the research trial period among a small circle, the composite insulator that strain insulator-string is used is at present general with suspension string composite insulator in raw material, version substantially.Super ultra high voltage refers to 220kV above, in China usually, refers to exchange 750kV, 1000kV and direct current 500kV, 800kV, 1100kV.The interchange USCD of the super UHV transmission line of China generally drops on the d level of SPS, and direct current drops on e level, and the creepage distance of engineering is had relatively high expectations.The general CF coefficient exchanging is generally in 3.6 left and right, and the CF coefficient of direct current is generally more than 3.8.
At present in the IEC standard and national standard of composite insulator, only provide suspension string with the basic demand of the beveled structure of composite insulator as a reference, to strain insulator-string with the umbrella shape research of composite insulator seldom.Research in Anti-tension composite insulator umbrella shape is also fewer both at home and abroad.
But the strain insulator-string of overhead transmission line is because mounting means is different from suspension string, insulation umbrella cover contamination mode, electric field distribution characteristic, wind field mechanical characteristic are all different from suspension string.Because the mounting means of strain insulator-string is that level is installed, the positive and negative of umbrella cover is compared with suspension string, is all easy to contamination; Special-purpose composite strain insulator in superhigh pressure, UHV transmission line, except meeting the requirement of transmission line, also should have installation easy, can bear to install and the function such as trample.
Utility model content
The utility model, for the deficiencies in the prior art, proposes a kind of super ultra high voltage Anti-tension composite insulator beveled structure, meets the instructions for use of super UHV Overhead Transmission Line strain insulator-string.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme: a kind of super ultra high voltage Anti-tension composite insulator beveled structure, comprise the large full skirt of plug, sheath, some equal diameters and the little full skirt of some equal diameters, described large full skirt and little full skirt are arranged alternately on described sheath extexine, and the extexine of described sheath is provided with the rib pleat that several less umbrellas stretch out.
Further, described large full skirt and little full skirt are symmetrical formula beveled structure.
Further, described large full skirt diameter is 148.75～201.25 mm, umbellule skirt diameter is 123.25～166.75 mm, umbrella spacing (i.e. axial distance between one group of full skirt) is 59.5～80.5mm, umbellule spacing (being the axial distance between adjacent two full skirts) is 29.75～40.25 mm, it is 53.12～71.88mm that the umbrella of large full skirt stretches out (being that jacket outer surface is to the radial dimension of gamp shirt rim edge), it is 41.22～55.78mm that the umbrella of little full skirt stretches out (being that jacket outer surface is to the radial dimension of umbellule shirt rim edge), (the folded angle in same plane and subumbrella inclination angle (being the folded angle in same plane on the high-pressure side surface of jacket surface and full skirt) that are the low-pressure end surface of jacket surface and full skirt are 78.8 °～106.6 ° at upper umbrella inclination angle, umbrella root portion chamfer radius (being that umbrella root portion chamfering refers to the radius of circle between full skirt and sheath) is 6.8～9.2 mm, it is 3～5 mm that the umbrella of rib pleat stretches out, the length of this beveled structure is 165.75～224.25 mm.
Further, the full skirt angle of described large full skirt and little full skirt is 4.5 °～6.1 °, and the full skirt root thickness of large full skirt is 7.41～10.03 mm, and the full skirt edge thickness of large full skirt is 4.04～5.46mm.
Further, the thickness of described sheath is 5.1～6.9 mm.
Further, described large full skirt diameter is 175 mm, and umbellule skirt diameter is 145 mm, umbrella spacing is 70 mm, and umbellule spacing is 35 mm, and it is 61 mm that the umbrella of large full skirt stretches out, it is 46 mm that the umbrella of little full skirt stretches out, and upper umbrella inclination angle and subumbrella inclination angle are 92.7 °, and umbrella root portion chamfer radius is 8 mm; It is 4 mm that the umbrella of rib pleat stretches out; The length of this beveled structure is 195 mm.
Further, the full skirt angle of described large full skirt and little full skirt is 5.3 °, and the thickness of sheath is 6.5mm.
Compared with prior art, the utlity model has following advantage: fundamentally improve the design concept of " straight line Composite, porcelain, glass for strain insulator-string ", can improve power line tension string resistant and dodge ability, reduce maintenance cost.This project has been expanded the scope of application of composite insulator, the achievement of development can be Transmission Line Design provides design alternative widely, especially in the type selecting for alternating current-direct current ultra high voltage strain insulator-string, provide design and model-selection foundation, the porcelain or the glass insulator that on can the current overhead transmission line strain insulator-string of equivalent substitution, use, save the construction investment of transmission line, improve the fail safe of transmission line operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is another structural representation of the present utility model;
Fig. 3 is a structural representation more of the present utility model;
Fig. 4 is two structural representations more of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail, the description of this part is only exemplary and explanatory, should not have any restriction to protection range of the present utility model.
A kind of super ultra high voltage Anti-tension composite insulator beveled structure as shown in Figure 1, comprise the large full skirt of plug, sheath, some equal diameters and the little full skirt of some equal diameters, described large full skirt 1 is arranged alternately on described sheath extexine with umbellule skirt 2, and this large full skirt 1 is symmetrical formula beveled structure with umbellule skirt 2.On this sheath extexine, be provided with rib pleat 3, the combination of the full skirt that this rib pleat 3 stretches out for several less umbrellas.
Sheath diameter d
3be 53 mm, diameter of mandrel d
4for 40mm, jacket thickness is 6.5mm, large full skirt diameter d
1for 175mm, umbellule skirt diameter d
2be 145 mm, umbrella spacing L
1for 70mm, umbellule spacing L
2be 35 mm, the umbrella of large full skirt stretches out L
3for 61mm, the umbrella of little full skirt stretches out L
4for 46mm, upper umbrella inclination angle [theta]
1with subumbrella inclination angle [theta]
2be 92.7 °, the chamfer radius R of umbrella root portion is 8mm; The full skirt angle theta of large full skirt 1 and umbellule skirt 2
3be 5.3 °, the full skirt diameter d of rib pleat
5for 61mm, the full skirt root thickness t of large full skirt 1
1be 8.72 mm, the full skirt edge thickness t of large full skirt 1
2for 4.75mm; It is 4 mm that umbrella that mutually should rib pleat stretches out; The length L of this beveled structure
5be 195 mm.
The creep distance ratio that first this umbrella shape can meet super extra high voltage line requires, and reaches the creepage distance requiring under relevant voltage grade.By ANSYS Electric Field Simulation analysis and research result verification, this umbrella shape can be optimized the Electric Field Distribution situation of each full skirt on composite insulator, avoids occurring the point of high potential difference near umbrella cover.Beveled structure is conducive to improve the self-cleaning ability of Anti-tension composite insulator simultaneously, reduces the filthy degree of reality in using, and improves the resistant of power line tension string and dodges ability.Relatively little umbrella diameter and relatively thick umbrella root thickness improve the stressing conditions of full skirt in natural wind field, also can avoid installation, trample the destruction that full skirt is caused.The rib pleat that centre is vacated is conducive to the walking of trampling in line construction, increases certain creepage distance, and has anti-skidding, wear-resisting effect concurrently.
Strain insulator-string is that level is installed, and this is different from suspension string, and the insulator electric field distribution characteristic causing therefrom, contamination accumulation characteristics, icing characteristic, wind field mechanical characteristic etc. are all different from suspension string.So, the umbrella shape design of composite insulator, how can both meet the basic demand of power transmission engineering, meet again the basic demand to umbrella shape size in relevant criterion, optimize near Electric Field Distribution composite insulator simultaneously, have and in higher pollution flashover voltage, natural environment, have good self-cleaning ability reduce under contamination, ice coating state other advantages such as stable performance, by these advantages all organically embody with a kind of umbrella shape on, be a bright spot of the present embodiment.
The difference of the present embodiment and embodiment 1 is: sheath diameter d
3for 45.06mm, diameter of mandrel d
4for 34.86mm, jacket thickness is 5.1mm, large full skirt diameter d
1be 151.3 mm, umbellule skirt diameter d
2be 127.5 mm, umbrella spacing L
1for 59.5mm, umbellule spacing L
2be 29.75 mm, the umbrella of large full skirt stretches out L
3for 53.12mm, the umbrella of little full skirt stretches out L
4for 41.22mm, upper umbrella inclination angle [theta]
1with subumbrella inclination angle [theta]
2be 78.8 °, the chamfer radius R of umbrella root portion is 6.8mm.The full skirt angle theta of large full skirt 1 and umbellule skirt 2
3be 4.5 °, the full skirt root thickness t of large full skirt 1
1be 7.41 mm, the full skirt edge thickness t of large full skirt 1
2for 4.04mm; The full skirt diameter d of rib pleat
5for 54mm; The length L of this beveled structure
5be 165.75 mm.
The difference of the present embodiment and embodiment 1 is sheath diameter d
3be 60.94 mm, diameter of mandrel d
4for 47.14mm, jacket thickness is 6.9mm, large full skirt diameter d
1be 204.7 mm, umbellule skirt diameter d
2be 172.5 mm, umbrella spacing L
1for 80.5mm, umbellule spacing L
2be 40.25 mm, the umbrella of large full skirt stretches out L
3for 71.88mm, the umbrella of little full skirt stretches out L
4for 55.78mm, upper umbrella inclination angle [theta]
1with subumbrella inclination angle [theta]
2be 106.6 °, the chamfer radius R of umbrella root portion is 9.2 mm.The full skirt angle theta of large full skirt 1 and umbellule skirt 2
3be 6.1 °, the full skirt root thickness t of large full skirt 1
1be 10.03 mm, the full skirt edge thickness t of large full skirt 1
2for 5.46mm; The full skirt diameter d of rib pleat
5for 65mm; The length L of this beveled structure
5be 224.25 mm.
embodiment 4
The difference of the present embodiment and embodiment 1 is sheath diameter d
3be 63 mm, diameter of mandrel d
4for 50mm, jacket thickness is 6.5mm; Large full skirt diameter d
1for 191mm, umbellule skirt diameter d
2be 163 mm, umbrella spacing L
1for 70mm, umbellule spacing L
2be 35 mm, the umbrella of large full skirt stretches out L
3for 64mm, the umbrella of little full skirt stretches out L
4for 50mm, upper umbrella inclination angle [theta]
1with subumbrella inclination angle [theta]
2be 92.7 °, the chamfer radius R of umbrella root portion is 8mm; The full skirt angle theta of large full skirt 1 and umbellule skirt 2
3be 5.3 °, the full skirt root thickness t of large full skirt 1
1be 8.86 mm, the full skirt edge thickness t of large full skirt 1
2for 4.75mm; The full skirt diameter d of rib pleat
5for 72mm; The length L of this beveled structure
5for 184.15mm.
embodiment 5
The difference of the present embodiment and embodiment 1 is sheath diameter d
3for 43mm, diameter of mandrel d
4for 30mm; Jacket thickness is 6.5mm, large full skirt diameter d
1for 163mm, umbellule skirt diameter d
2for 135mm, umbrella spacing L
1for 70mm, umbellule spacing L
2for 35mm, the umbrella of large full skirt stretches out L
3for 60mm, the umbrella of little full skirt stretches out L
4for 46mm, upper umbrella inclination angle [theta]
1with subumbrella inclination angle [theta]
2be 92.7 °, the chamfer radius R of umbrella root portion is 8mm; The full skirt angle theta of large full skirt 1 and umbellule skirt 2
3be 5.3 °, the full skirt root thickness t of large full skirt 1
1be 8.48 mm, the full skirt edge thickness t of large full skirt 1
2for 4.75mm; The full skirt diameter d of rib pleat
5for 50mm; The length L of this beveled structure
5be 212.42 mm.
The umbrella shape of the utility model composite insulator, is the combination that two large umbellules add rib pleat, and as shown in Figures 1 to 4, the diversity of the mode of this combination, all can meet most super UHV transmission line for the basic demand of creepage distance.This utility model is mainly used in using porcelain or glass insulator in the current overhead transmission line strain insulator-string of equivalence replacement.
Umbrella shape size meets selection and the size of high-tension insulator under the filthy condition of IEC/TS 60815-3 < < completely and determines---the 3rd part: and seven basic demands of " checking of formal parameter " in polymer insulator > > for AC system, and in the recommended range in " zero deflection ";
The design reference providing according to academic documents, this umbrella shape size also can be coincide with most results of study, makes composite insulator have good electrical characteristic, contamination accumulation characteristics.
In view of the mounting means of strain insulator-string, this umbrella shape has adopted symmetrical form, and is different from the suspension string form of the Tiliting umbrella of employing conventionally.The method that the author has adopted the solid coupling Simulation of ANSYS bidirectional flow to analyze, contrast verification the contamination accumulation characteristics of that tilt, vertical, symmetrical umbrella shape, result shows, symmetrical umbrella shape has better contamination effect and a self-cleaning ability in natural environment.
Another advantage of symmetrical umbrella is, under identical umbrella angle, relative tilt umbrella or vertical umbrella are thinner, and in the situation that identical umbrella root thickness, symmetrical umbrella is less than the umbrella angle of Tiliting umbrella or vertical umbrella.Such design can meet necessary mechanical strength, can bear trampling of maintenance worker and can not damage; Meanwhile, the high wind weather in natural environment can be effectively resisted in such design, prevents that full skirt from damaging and affect the piece electrical performance of composite insulator.
Be compared to existing composite insulator umbrella shape on market, the utility model, when meeting basic demand and optimizing electric, mechanical property, can significantly reduce glue consumption, increases economic efficiency.The rib pleat structure of original creation, such structure is convenient to staff and is patrolled and examined strain insulator, have resistance toly trample, anti-skidding, wear-resistant effect.
Claims (7)
1. a super ultra high voltage Anti-tension composite insulator beveled structure, comprise the large full skirt of plug, sheath, some equal diameters and the little full skirt of some equal diameters, described large full skirt and little full skirt are arranged alternately on described sheath extexine, it is characterized in that: the extexine of described sheath is provided with the rib pleat that several less umbrellas stretch out.
2. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 1, is characterized in that: described large full skirt and little full skirt are symmetrical formula beveled structure.
3. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 1 or 2, it is characterized in that: described large full skirt diameter is 148.75～201.25 mm, umbellule skirt diameter is 123.25～166.75 mm, umbrella spacing is 59.5～80.5mm, umbellule spacing is 29.75～40.25 mm, it is 53.12～71.88mm that the umbrella of large full skirt stretches out, it is 41.22～55.78mm that the umbrella of little full skirt stretches out, upper umbrella inclination angle and subumbrella inclination angle are 78.8 °～106.6 °, and umbrella root portion chamfer radius is 6.8～9.2 mm; It is 3～5 mm that the umbrella of rib pleat stretches out; The length of this beveled structure is 165.75～224.25 mm.
4. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 1 or 2, it is characterized in that: the full skirt angle of described large full skirt and little full skirt is 4.5 °～6.1 °, the full skirt root thickness of large full skirt is 7.41～10.03 mm, and the full skirt edge thickness of large full skirt is 4.04～5.46mm.
5. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 1 or 2, is characterized in that: the thickness of described sheath is 5.1～6.9 mm.
6. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 3, it is characterized in that: described large full skirt diameter is 175 mm, umbellule skirt diameter is 145 mm, umbrella spacing is 70 mm, umbellule spacing is 35 mm, and it is 61 mm that the umbrella of large full skirt stretches out, and it is 46 mm that the umbrella of little full skirt stretches out, upper umbrella inclination angle and subumbrella inclination angle are 92.7 °, and umbrella root portion chamfer radius is 8 mm; It is 4 mm that the umbrella of rib pleat stretches out; The length of this beveled structure is 195 mm.
7. super ultra high voltage Anti-tension composite insulator beveled structure as claimed in claim 4, it is characterized in that: the full skirt angle of described large full skirt and little full skirt is 5.3 °, large full skirt full skirt root thickness is 8.72mm, and large full skirt full skirt edge thickness is 4.75mm, and the thickness of sheath is 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667400.9U CN203552823U (en) | 2013-10-28 | 2013-10-28 | Umbrella-shaped structure of ultra-high-voltage tension composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667400.9U CN203552823U (en) | 2013-10-28 | 2013-10-28 | Umbrella-shaped structure of ultra-high-voltage tension composite insulator |
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| Publication Number | Publication Date |
|---|---|
| CN203552823U true CN203552823U (en) | 2014-04-16 |
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|---|---|---|---|
| CN201320667400.9U Expired - Fee Related CN203552823U (en) | 2013-10-28 | 2013-10-28 | Umbrella-shaped structure of ultra-high-voltage tension composite insulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545057A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN104157379A (en) * | 2014-08-18 | 2014-11-19 | 国家电网公司 | Multilevel composite insulator |
-
2013
- 2013-10-28 CN CN201320667400.9U patent/CN203552823U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545057A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN103545057B (en) * | 2013-10-28 | 2017-03-15 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN104157379A (en) * | 2014-08-18 | 2014-11-19 | 国家电网公司 | Multilevel composite insulator |
| CN104157379B (en) * | 2014-08-18 | 2016-08-17 | 国家电网公司 | A kind of multistage composite insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |