CN103545056A - Composite insulator umbrella-shaped structure - Google Patents

Composite insulator umbrella-shaped structure Download PDF

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Publication number
CN103545056A
CN103545056A CN201310515266.5A CN201310515266A CN103545056A CN 103545056 A CN103545056 A CN 103545056A CN 201310515266 A CN201310515266 A CN 201310515266A CN 103545056 A CN103545056 A CN 103545056A
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China
Prior art keywords
umbrella
full skirt
skirt
composite insulator
diameter
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CN201310515266.5A
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CN103545056B (en
Inventor
李启源
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XINJIANG XINNENG TIANNING ELECTRIC INSULATION MATERIALS CO Ltd
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XINJIANG XINNENG TIANNING ELECTRIC INSULATION MATERIALS CO Ltd
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Abstract

The invention discloses a composite insulator umbrella-shaped structure. The composite insulator umbrella-shaped structure comprises a mandrel, a protective sleeve, large umbrella skirts and a small umbrella skirt, wherein the large umbrella skirts and the small umbrella skirt are arranged in an alternate mode, the diameter of each large umbrella skirt ranges from 151.3mm to 204.7mm, the diameter of the small umbrella skirt ranges from 127.5mm to 172.5mm, the umbrella interval ranges from 59.5mm to 80.5mm, the minimum umbrella interval ranges from 29.75mm to 40.25mm, the length of the extending portion of each large umbrella skirt ranges from 53.12mm to 71.88mm, the length of the extending portion of the small umbrella shirt ranges from 41.22mm to 55.78mm, the upper umbrella dip angle and the lower umbrella dip angle range from 78.8 degrees to 106.6 degrees, and the radius of the chamfer of the root portion of each umbrella ranges from 6.8mm to 9.2mm. According to the composite insulator umbrella-shaped structure, the electric field distribution condition of each umbrella skirt on a composite insulator can be optimized, the high potential difference is prevented from appearing nearby an umbrella sleeve, the self-cleaning capacity of the tension-resistant composite insulator can be beneficially improved due to the symmetrical umbrella-shaped structure, the pollution flashover voltage of the composite insulator is raised, and the pollution-flashover-resistant capacity of a tension-resistant string of an electric transmission line is improved.

Description

A kind of umbrella structure of composite insulator
Technical field
Type of the present invention relates to super UHV Overhead Transmission Line external insulation technical equipment field, is specifically related to a kind of umbrella structure of composite insulator.
Background technology
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, when strain insulator-string is used porcelain and glass insulator to exist 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., therefore the deficiency of the anti-pollution flashover ability of strain insulator-string manifests day by day, and 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 transmission line, at superhigh pressure, UHV transmission line is used strain insulator-string also in research trial period among a small circle, the composite insulator that strain insulator-string is used is at present at raw material, version is general with suspension string composite insulator substantially, the strain insulator-string mounting means of overhead transmission line is different from suspension string, insulation umbrella cover contamination mode, electric field distribution characteristic, wind field mechanical characteristic is all also different from suspension string, the mounting means of strain insulator-string is that level is installed, the positive and negative of umbrella cover is compared with suspension string, all be easy to contamination.
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, strain insulator-string is that level is installed, this is different from suspension string, the insulator electric field distribution characteristic causing therefrom, contamination accumulation characteristics, icing characteristic, wind field mechanical characteristics 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 the Electric Field Distribution of composite insulator simultaneously, there is higher pollution flashover voltage, in natural environment, there is good self-cleaning ability to reduce contamination, other advantage such as stable performance under ice coating state, by these advantages all organically embody with a kind of umbrella shape on, it is the difficult point of composite insulator umbrella shape.And 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.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of umbrella structure of composite insulator, this beveled structure can be optimized Electric Field Distribution, improve self-cleaning ability, can meet the instructions for use of super UHV Overhead Transmission Line strain insulator-string.
Object of the present invention is carried out specific implementation by the following technical programs:
A kind of umbrella structure of composite insulator, comprise plug, sheath, the large full skirt of some equal diameters and the little full skirt of some equal diameters, described large full skirt and umbellule skirt alternative arrangement, described large full skirt diameter is 151.3 ~ 204.7 mm, umbellule skirt diameter is 127.5 ~ 172.5 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.
The full skirt angle of described large full skirt and little full skirt is 4.5 ° ~ 6.1 °, the full skirt root thickness of the large full skirt full skirt thickness of jacket outer surface 10mm position (apart from) is 7.41 ~ 10.03 mm, and the full skirt edge thickness of the large full skirt full skirt thickness of 10mm position, full skirt edge (apart from) is 4.04 ~ 5.46mm.
The thickness of described sheath is 5.1 ~ 6.9mm.
Described large full skirt and little full skirt are symmetrical formula beveled structure.
Described large full skirt diameter is preferably 178mm, umbellule skirt diameter is preferably 150mm, umbrella spacing is preferably 70mm, umbellule spacing is preferably 35mm, the umbrella of large full skirt stretches out and is preferably 62.5mm, the umbrella of little full skirt stretches out and is preferably 48.5mm, and upper umbrella inclination angle and subumbrella inclination angle are all preferably 92.7 °, and umbrella root portion chamfer radius is preferably 8mm.
The full skirt angle of described large full skirt and little full skirt is preferably 5.3 °, and large full skirt full skirt root thickness is preferably 8.72mm, and large full skirt full skirt edge thickness is preferred 4.75mm, and the thickness of sheath is preferably as 6.5mm.
A kind of umbrella structure of composite insulator of the present invention, meet the basic demand of power transmission engineering, meet again the basic demand to umbrella shape size in relevant criterion, can optimize the Electric Field Distribution situation of each full skirt on composite insulator, avoid occurring the point of high potential difference near umbrella cover, simultaneously, the symmetrical expression beveled structure of full skirt is conducive to improve the self-cleaning ability of Anti-tension composite insulator, reduce the filthy degree of reality in using, improve the pollution flashover voltage of composite insulator, improve the resistant of power line tension string and dodge ability, also can avoid installation, trample the destruction that full skirt is caused.Be compared to existing composite insulator umbrella shape on market, the present invention, when meeting basic demand and optimizing electric, mechanical property, can significantly reduce glue consumption, increases economic efficiency.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the structural representation of a kind of umbrella structure of composite insulator of the present invention.
In figure: the large full skirt of 1-; The little full skirt of 2-; 3-sheath; 4-plug; d 1-large full skirt diameter; d 2-umbellule skirt diameter; d 3-sheath diameter; d 4-diameter of mandrel; L 1-umbrella spacing; L 2-umbellule spacing; L 3the umbrella of-large full skirt stretches out; L 4the umbrella of-little full skirt stretches out; θ 1-upper umbrella inclination angle; θ 2-subumbrella inclination angle; θ 3-full skirt angle; R-umbrella root portion chamfer radius; t 1-full skirt root thickness; t 2-full skirt edge thickness.
Embodiment
embodiment 1
As shown in Figure 1, a kind of umbrella structure of composite insulator described in the embodiment of the present invention, comprises the large full skirt 1 of plug 4, sheath 3, some equal diameters and the umbellule skirt 2 of some equal diameters, large full skirt 1 and umbellule skirt 2 alternative arrangements, sheath diameter d 3be 53 mm, diameter of mandrel d 4for 40mm, jacket thickness is 6.5mm, large full skirt diameter d 1for 178mm, umbellule skirt diameter d 2be 150 mm, umbrella spacing L 1for 70mm, umbellule spacing L 2be 35 mm, the umbrella of large full skirt stretches out L 3for 62.5mm, the umbrella of little full skirt stretches out L 4for 48.5mm, 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 8.72 mm, the full skirt edge thickness t of large full skirt 1 2for 4.75mm.
Mounting means in view of strain insulator-string, large full skirt 1 is symmetrical formula beveled structure with umbellule skirt 2, and be different from the form of the Tiliting umbrella that suspension string conventionally adopts, by the method that 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 demonstration, the symmetrical full skirt of planform has better contamination effect and self-cleaning ability in natural environment.
Another advantage of symmetrical full skirt 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.
This beveled structure 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.
embodiment 2
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.
embodiment 3
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.
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.
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.
Patent of the present invention will fundamentally be improved 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, can save the construction investment of transmission line, improve the fail safe of transmission line operation.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention; be not limited to the present invention; for a person skilled in the art; its technical scheme that still can record aforementioned each embodiment regulates; or part technical characterictic is wherein equal to replacement; within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (6)

1. a umbrella structure of composite insulator, comprise plug, sheath, the large full skirt of some equal diameters and the little full skirt of some equal diameters, described large full skirt and umbellule skirt alternative arrangement, it is characterized in that: described large full skirt diameter is 151.3 ~ 204.7 mm, umbellule skirt diameter is 127.5 ~ 172.5 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 °, umbrella root portion chamfer radius is 6.8 ~ 9.2 mm.
2. a kind of umbrella structure of composite insulator according to claim 1, 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.
3. a kind of umbrella structure of composite insulator according to claim 1, is characterized in that: the thickness of described sheath is 5.1 ~ 6.9mm.
4. according to a kind of umbrella structure of composite insulator described in claims 1 to 3 any one, it is characterized in that: described large full skirt and little full skirt are symmetrical formula beveled structure.
5. a kind of umbrella structure of composite insulator according to claim 4, it is characterized in that: described large full skirt diameter is preferably 178mm, umbellule skirt diameter is preferably 150mm, umbrella spacing is preferably 70mm, umbellule spacing is preferably 35mm, and the umbrella of large full skirt stretches out and is preferably 62.5mm, and the umbrella of little full skirt stretches out and is preferably 48.5mm, upper umbrella inclination angle and subumbrella inclination angle are all preferably 92.7 °, and umbrella root portion chamfer radius is preferably 8mm.
6. a kind of umbrella structure of composite insulator according to claim 5, it is characterized in that: the full skirt angle of described large full skirt and little full skirt is preferably 5.3 °, large full skirt full skirt root thickness is preferably 8.72mm, large full skirt full skirt edge thickness is preferred 4.75mm, and the thickness of sheath is preferably as 6.5mm.
CN201310515266.5A 2013-10-28 2013-10-28 A kind of umbrella structure of composite insulator Expired - Fee Related CN103545056B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105931766A (en) * 2016-07-04 2016-09-07 安徽天达网络科技有限公司 Composite needle type insulator
CN106782933B (en) * 2017-01-13 2019-02-22 清华大学深圳研究生院 A kind of wind-resistant composite insulator and its mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06245358A (en) * 1993-02-10 1994-09-02 Furukawa Electric Co Ltd:The Deterioration preventer for polymer insulator
CN101419856A (en) * 2008-11-11 2009-04-29 中国南方电网有限责任公司电网技术研究中心 DC composite supporting column insulator and umbrella skirt construction thereof
CN203085296U (en) * 2012-12-06 2013-07-24 新疆电力公司 A novel strong wind resisting-type composite insulator applied to strong wind regions
CN103345987A (en) * 2013-06-17 2013-10-09 甘肃省电力公司检修公司 Silicon-fluorine composite insulator with 300KN or 400KN breaking load
CN203552820U (en) * 2013-10-28 2014-04-16 新疆新能天宁电工绝缘材料有限公司 Umbrella-shaped structure of composite insulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06245358A (en) * 1993-02-10 1994-09-02 Furukawa Electric Co Ltd:The Deterioration preventer for polymer insulator
CN101419856A (en) * 2008-11-11 2009-04-29 中国南方电网有限责任公司电网技术研究中心 DC composite supporting column insulator and umbrella skirt construction thereof
CN203085296U (en) * 2012-12-06 2013-07-24 新疆电力公司 A novel strong wind resisting-type composite insulator applied to strong wind regions
CN103345987A (en) * 2013-06-17 2013-10-09 甘肃省电力公司检修公司 Silicon-fluorine composite insulator with 300KN or 400KN breaking load
CN203552820U (en) * 2013-10-28 2014-04-16 新疆新能天宁电工绝缘材料有限公司 Umbrella-shaped structure of composite insulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105931766A (en) * 2016-07-04 2016-09-07 安徽天达网络科技有限公司 Composite needle type insulator
CN106782933B (en) * 2017-01-13 2019-02-22 清华大学深圳研究生院 A kind of wind-resistant composite insulator and its mold

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