CN204288963U - Composite insulator string containing size grading ring - Google Patents

Composite insulator string containing size grading ring Download PDF

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Publication number
CN204288963U
CN204288963U CN201420667656.4U CN201420667656U CN204288963U CN 204288963 U CN204288963 U CN 204288963U CN 201420667656 U CN201420667656 U CN 201420667656U CN 204288963 U CN204288963 U CN 204288963U
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China
Prior art keywords
grading ring
ring
little
ring body
insulator string
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Active
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CN201420667656.4U
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Chinese (zh)
Inventor
张志伟
郭慧豪
桑建超
任文静
魏志华
贾中伟
罗洪超
黄山
何桂兰
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ZHENGZHOU XIANGHE GROUP ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
ZHENGZHOU ZHONGCHUANG HUIDA ELECTRIC Co Ltd
State Grid Corp of China SGCC
Zhengzhou Power Supply Co of Henan Electric Power Co
Original Assignee
ZHENGZHOU XIANGHE GROUP ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
ZHENGZHOU ZHONGCHUANG HUIDA ELECTRIC Co Ltd
State Grid Corp of China SGCC
Zhengzhou Power Supply Co of Henan Electric Power Co
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Application filed by ZHENGZHOU XIANGHE GROUP ELECTRIC EQUIPMENT MANUFACTURING Co Ltd, ZHENGZHOU ZHONGCHUANG HUIDA ELECTRIC Co Ltd, State Grid Corp of China SGCC, Zhengzhou Power Supply Co of Henan Electric Power Co filed Critical ZHENGZHOU XIANGHE GROUP ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
Priority to CN201420667656.4U priority Critical patent/CN204288963U/en
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Abstract

The utility model discloses a kind of composite insulator string containing size grading ring, comprise large, little grading ring and stringinsulator unit, two kinds multi-form large, little grading ring and several stringinsulator units are with the use of composition composite insulator string, greatly described, little grading ring includes ring body, grading ring bracing frame and fixing and locking bolt, greatly, little grading ring is opening shape, opening portion is discharging gap, can not corrode by electric field by available protecting insulator end, and the assemblage gap of two pendulous string isolator can be met, ensure that two grading rings can not cause distortion because of collision in the vibration of wind dance, displacement, thus ensure the safe and reliable operation of insulator and ± 800kV DC power transmission line.The utility model is novel in design, structure is unique; well can either meet ± the operation demand of 800kV DC line, protection insulator end does not corrode by electric field; be convenient to again online replacing and installation; great saving line upkeep cost; guarantee that circuit runs reliably and with long-term, there are very high economic results in society.

Description

Composite insulator string containing size grading ring
Technical field:
The utility model relates to composite insulator string in a kind of extra-high voltage electric transmission and transformation system and pressure-equalizing device thereof, particularly relates to a kind of composite insulator string containing size grading ring, belongs to extreme high voltage technical field.
Background technology:
Composite insulator is a very important equipment in transmission line, and all presses shielding problem to be affect a transmission line security of operation whether key factor.Problems of The Electric Field mainly its Analysis of End Electric Field of composite insulator, the electric field strength on gold utensil is comparatively large, in air oxygen detrition situation, may corona phenomenon be there is in gold utensil, therefore, need the electric field strength managing to reduce hardware end, uniform ring is installed, the electric field strength of hardware end is reduced.Traditional grading ring and composite insulator obviously can not meet the needs of UHV transmission line, particularly can not meet ± the requirement of 800kV direct-current ultra high voltage power grids circuits.
Utility model content:
Technical problem to be solved in the utility model is: provide a kind of composite insulator string containing size grading ring; large and small grading ring with the use of; can not corrode by electric field by available protecting insulator end; and the assemblage gap of two pendulous string isolator can be met; ensure the phenomenon that two grading rings can not cause because of collision being out of shape, being shifted in the vibration of wind dance, thus ensure the safe and reliable operation of insulator and ± 800kV DC power transmission line.
The technical scheme that the utility model is taked for technical solution problem is:
A kind of composite insulator string containing size grading ring, comprise large grading ring, little grading ring and stringinsulator unit, described large grading ring comprises large grading ring ring body, large grading ring bracing frame and large grading ring fixing and locking bolt, described large grading ring ring body is provided with large ring body opening, the ring body end face of described large ring body opening both sides is spherical shape, gap between two ring body end faces is less than or equal to the diameter of 1/8 large ring body, described large grading ring bracing frame is outward extending insulated connecting piece, in different " S " type, described large grading ring fixing and locking bolt and large grading ring bracing frame are positioned at large grading ring ring body side, be fixedly connected with by rivet between described large grading ring bracing frame one end with large grading ring ring body, the other end is bolted on the insulation ball-and-socket gold utensil of composite insulator string side by large grading ring fixing and locking, described little grading ring comprises little grading ring ring body, little grading ring bracing frame and little grading ring fixing and locking bolt, described little grading ring ring body is provided with little ring body opening, the ring body end face of described little ring body opening both sides is spherical shape, gap between two ring body end faces is less than or equal to the diameter of 1/8 little ring body, described little grading ring bracing frame is outward extending insulated connecting piece, in " L " type, described little grading ring fixing and locking bolt and little grading ring bracing frame are positioned at little grading ring ring body side, described " L " type little grading ring bracing frame one end is fixedly connected with between little grading ring ring body, the other end is bolted on the insulation bulb gold utensil of composite insulator string opposite side by little grading ring fixing and locking, described stringinsulator unit comprises insulation bulb gold utensil, little grading ring, insulator string, large grading ring and insulation ball-and-socket gold utensil, and described little grading ring and insulation bulb gold utensil are positioned at the opposite side that the side of insulator string, described large grading ring and insulation ball-and-socket gold utensil are positioned at insulator string.
Described stringinsulator unit is several, and the insulation bulb gold utensil of adjacent two stringinsulator units and insulation ball-and-socket gold utensil match each other and link together; Several stringinsulator units combine formation composite insulator string mutually.
Described composite insulator string side is provided with arcing horn starting rod.
The ring part of described large grading ring and little grading ring selects YL113 aluminum alloy materials to process, and surface finish, prevents point discharge; Described large grading ring bracing frame selects that integral cast steel is zinc-plated to be formed, for large grading ring provides enough strength support; Described little grading ring bracing frame selects high-strength aluminum alloy material to process, for little grading ring provides the support of sufficient intensity.
The utility model by by the large and small grading ring of two kinds of different types with the use of; electrical performance demands and the installation requirement of DC Insulator can be met completely; can not corrode by electric field by available protecting insulator end; and the assemblage gap of two pendulous string isolator can be met; ensure that two grading rings can not cause distortion, displacement because of collision in the vibration of wind dance, thus ensure the safe and reliable operation of insulator and ± 800kV DC power transmission line.
In the utility model, large grading ring and little grading ring are all designed to opening shape, and opening portion is discharging gap, when electric charge savings is too much, and can self-discharge release pressure.Meanwhile, the opening design of two size ring bodies, is conducive to the online installation and removal of grading ring, does not need to dismantle insulator, again lift the replacing that circuit just easily can realize grading ring.
The utility model is novel in design, structure is unique; well can either meet ± 800kV DC line operation demand, protection insulator end does not corrode by electric field; be convenient to again online replacing and installation; great saving line upkeep cost; and excellent material effectively can avoid corrosion; guarantee to run reliably and with long-term, there are very high market application foreground and economic results in society.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of large grading ring in the utility model;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the structural representation of the medium and small grading ring of the utility model;
Fig. 5 is the right view of Fig. 4.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further explained and illustrate:
See Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of composite insulator string containing size grading ring, comprise large grading ring 10, little grading ring 20 and stringinsulator unit, described large grading ring 10 comprises large grading ring ring body 1, large grading ring bracing frame 2 and large grading ring fixing and locking bolt 3, large grading ring ring body 1 is provided with large ring body opening 4, the ring body end face of large ring body opening 4 both sides is spherical shape 5, gap between two ring body end faces is less than or equal to the diameter of 1/8 large ring body, large grading ring bracing frame 2 is outward extending insulated connecting piece, in different " S " type, large grading ring fixing and locking bolt 3 and large grading ring bracing frame 2 are positioned at large grading ring ring body 1 side, be fixedly connected with by rivet between large grading ring bracing frame 2 one end with large grading ring ring body 1, the other end is fixed on the insulation ball-and-socket gold utensil 9 of composite insulator string side by large grading ring fixing and locking bolt 3, described little grading ring 20 comprises little grading ring ring body 11, little grading ring bracing frame 21 and little grading ring fixing and locking bolt 31, little grading ring ring body 11 is provided with little ring body opening 41, the ring body end face of described little ring body opening 41 both sides is spherical shape 51, gap between two ring body end faces is less than or equal to the diameter of 1/8 little ring body, little grading ring bracing frame 21 is outward extending insulated connecting piece, in " L " type, little grading ring fixing and locking bolt 31 and little grading ring bracing frame 21 are positioned at little grading ring ring body 11 side, " L " type little grading ring bracing frame 21 one end is fixedly connected with between little grading ring ring body 11, the other end is fixed on the insulation bulb gold utensil 8 of composite insulator string opposite side by little grading ring fixing and locking bolt 31, described stringinsulator unit comprises insulation bulb gold utensil 8, little grading ring 20, insulator string 7, large grading ring 10 and insulation ball-and-socket gold utensil 9, and little grading ring 20 and insulation bulb gold utensil 8 are positioned at the opposite side that the side of insulator string 7, large grading ring 10 and insulation ball-and-socket gold utensil 9 are positioned at insulator string 7, described stringinsulator unit is several, and the insulation bulb gold utensil 8 of adjacent two stringinsulator units and insulation ball-and-socket gold utensil 9 match each other and link together, several stringinsulator units combine formation composite insulator string mutually, composite insulator string side is provided with arcing horn starting rod 6.
Wherein: the ring part of large grading ring 10 and little grading ring 20 selects YL113 aluminum alloy materials to process, and surface finish, prevents point discharge; Large grading ring bracing frame 2 selects that integral cast steel is zinc-plated to be formed, for large grading ring 10 provides enough strength support; Little grading ring bracing frame 21 selects high-strength aluminum alloy material to process, for little grading ring 20 provides the support of sufficient intensity.
In the utility model, large grading ring 10 and little grading ring 20 are all designed to opening shape, and opening portion is discharging gap, when electric charge savings is too much, and can self-discharge release pressure.Meanwhile, the opening design of two size ring bodies, is conducive to the online installation and removal of grading ring, does not need to dismantle insulator, again lift the replacing that circuit just easily can realize grading ring.The utility model is novel in design, structure is unique; well can either meet ± 800kV DC line operation demand, protection insulator end does not corrode by electric field; be convenient to again online replacing and installation; great saving line upkeep cost; and excellent material effectively can avoid corrosion; guarantee to run reliably and with long-term, there are very high market application foreground and economic results in society.

Claims (3)

1. the composite insulator string containing size grading ring, comprise large grading ring (10), little grading ring (20) and stringinsulator unit, it is characterized in that: described large grading ring (10) comprises large grading ring ring body (1), large grading ring bracing frame (2) and large grading ring fixing and locking bolt (3), described large grading ring ring body (1) is provided with large ring body opening (4), the ring body end face of described large ring body opening (4) both sides is spherical shape (5), gap between two ring body end faces is less than or equal to the diameter of 1/8 large ring body, described large grading ring bracing frame (2) is outward extending insulated connecting piece, in different " S " type, described large grading ring fixing and locking bolt (3) and large grading ring bracing frame (2) are positioned at large grading ring ring body (1) side, described large grading ring bracing frame (2) one end is fixedly connected with by rivet with between large grading ring ring body (1), the other end is fixed on the insulation ball-and-socket gold utensil (9) of composite insulator string side by large grading ring fixing and locking bolt (3), described little grading ring (20) comprises little grading ring ring body (11), little grading ring bracing frame (21) and little grading ring fixing and locking bolt (31), described little grading ring ring body (11) is provided with little ring body opening (41), the ring body end face of described little ring body opening (41) both sides is spherical shape (51), gap between two ring body end faces is less than or equal to the diameter of 1/8 little ring body, described little grading ring bracing frame (21) is outward extending insulated connecting piece, in " L " type, described little grading ring fixing and locking bolt (31) and little grading ring bracing frame (21) are positioned at little grading ring ring body (11) side, described " L " type little grading ring bracing frame (21) one end is fixedly connected with between little grading ring ring body (11), the other end is fixed on the insulation bulb gold utensil (8) of composite insulator string opposite side by little grading ring fixing and locking bolt (31), described stringinsulator unit comprises insulation bulb gold utensil (8), little grading ring (20), insulator string (7), large grading ring (10) and insulation ball-and-socket gold utensil (9), and described little grading ring (20) and bulb gold utensil (8) that insulate are positioned at the opposite side that the side of insulator string (7), described large grading ring (10) and ball-and-socket gold utensil (9) that insulate are positioned at insulator string (7).
2. the composite insulator string containing size grading ring according to claim 1, it is characterized in that: described stringinsulator unit is several, the insulation bulb gold utensil (8) of adjacent two stringinsulator units and insulation ball-and-socket gold utensil (9) match each other and link together; Several stringinsulator units combine formation composite insulator string mutually.
3. the composite insulator string containing size grading ring according to claim 2, is characterized in that: described composite insulator string side is provided with arcing horn starting rod (6).
CN201420667656.4U 2014-11-11 2014-11-11 Composite insulator string containing size grading ring Active CN204288963U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201420667656.4U CN204288963U (en) 2014-11-11 2014-11-11 Composite insulator string containing size grading ring

Publications (1)

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CN204288963U true CN204288963U (en) 2015-04-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104376932A (en) * 2014-11-11 2015-02-25 国家电网公司 Composite insulator string with big grading rings and small grading rings
CN108831639A (en) * 2018-06-11 2018-11-16 山东彼岸电力科技有限公司 A kind of middle part screening arrangement for folded suspension insulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104376932A (en) * 2014-11-11 2015-02-25 国家电网公司 Composite insulator string with big grading rings and small grading rings
CN108831639A (en) * 2018-06-11 2018-11-16 山东彼岸电力科技有限公司 A kind of middle part screening arrangement for folded suspension insulator

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