CN202307371U - Split-type grading and shielding ring device, and grading and shielding structure of high-voltage DC (direct current) line thereof - Google Patents
Split-type grading and shielding ring device, and grading and shielding structure of high-voltage DC (direct current) line thereof Download PDFInfo
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- CN202307371U CN202307371U CN2011203056636U CN201120305663U CN202307371U CN 202307371 U CN202307371 U CN 202307371U CN 2011203056636 U CN2011203056636 U CN 2011203056636U CN 201120305663 U CN201120305663 U CN 201120305663U CN 202307371 U CN202307371 U CN 202307371U
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Abstract
The utility model discloses a split-type grading and shielding ring device, and a grading and shielding structure of a high-voltage DC (direct current) line thereof. Specifically, the split-type grading and shielding ring device comprises at least three split-type grading and shielding rings which include a J-type grading and shielding ring for being arranged on the insulator side, a first grading and shielding ring for being arranged on the guide line side, and a second grading and shielding ring for being arranged between the J-type grading and shielding ring and the first grading and shielding ring. The split-type grading and shielding ring device disclosed by the utility model adopts a three-ring structure, and through a reasonable layout, the rings are formed into a shielding whole so as to equalize the voltage of an insulator and shielding the corona of an insulator string, thereby achieving a better voltage equalizing effect. In addition, the device and structure disclosed by the utility model also have the advantages of easiness in installation, low construction difficulty, and installation implemented without cutting off lines, and the like.
Description
Technical field
The utility model relates to transmission of electricity hvdc transmission line equipment field, split type all pressures shading ring in particularly a kind of ± 800kV extra-high voltage direct-current circuit.
Background technology
± 800kV direct current UHV transmission line is because voltage is high, and the voltage distributed pole of insulator is inhomogeneous in the insulator string, causes lead side insulator voltage very high, and gold utensil surface meeting generation corona, and the effect of grading ring is exactly the corona of controlling on the insulator.Corona be exactly when corona be exactly when the voltage on lead and the gold utensil is very high, its surperficial electric potential gradient surpassed that critical value produces visual corona.Because its surperficial air produces ionization under too high electric potential gradient, send blue radiance, send sound simultaneously, corona discharge phenomenon that Here it is.The harm of corona mainly shows as the pollution of environment and the loss of the energy.
Grading ring ring body diameter commonly used at present is 50mm, can not satisfy far away ± the anti-corona requirement of 800kV DC power transmission line.The aluminium bar that grading ring support commonly used at present is Φ 20～22 bends and forms its intensity and the anti-corona requirement that all can not satisfy extra high voltage line.The aluminium bar that grading ring support commonly used at present is Φ 20～22 bends and forms its intensity and the anti-corona requirement that all can not satisfy extra high voltage line.
At present, general grading ring ring body is generally the ring body of a closure, installs and change all inconveniences, in some occasions that need install additional and change, even will circuit be cut off and accomplish, and has not only strengthened workload, but also has needed aid, has increased cost.In addition, use always and all press shading ring ring body diameter less, anti-corona performance can not reach the requirement of extra high voltage line.
Summary of the invention
The purpose of the utility model is to provide the split type shading ring device of all pressing of a kind of novel being used for ± 800kV direct current UHV transmission line, and the corona of this device balanced insulator voltage of ability and shielding insulation substring reaches and better all presses effect.
In the first aspect of the utility model, a kind of split type shading ring device of all pressing is provided, comprising:
At least three split type shading rings of all pressing; J type comprising being used to be installed in the insulator side is all pressed shading ring; And be used to be installed in first of lead side and all press shading ring, and all press shading ring and first all to press second between the shading ring all to press shading ring in said J type.
In another preference, this device comprises 3 split type shading rings of all pressing.
In another preference, first all to press shading ring and/or second all to press shading ring be that the C type is all pressed shading ring.
In another preference, the J type all presses the shading ring ring body to adopt the branch body structure, is made up of left semi-ring and right semi-ring, and left semi-ring and right semi-ring are the J type.
In another preference, the J type all presses shading ring also to comprise: yoke plate and the support that is connected with right semi-ring with left semi-ring, thereby and support be fixed in yoke plate the fixing J of formation of left semi-ring and right semi-ring type all pressed shading ring.
In another preference, the C type all presses shading ring to comprise C type ring body and support, and support passes through bolt on C type ring body.
In another preference, the C type all presses the ring body of shading ring to be connected through bolt (25) with two V-type supports, and said two V-type supports are fastened to each other through bolt (24) at the middle part.
In another preference, the split type shading ring ring body of all pressing is that diameter is the aluminum pipe of 100-140mm.
More preferably, ring body is that diameter is the aluminum pipe of 100-140mm.
In another preference, it is 4.0-6.0mm that the J type is all pressed shading ring ring body aluminum pipe wall thickness.
More preferably, all to press shading ring ring body aluminum pipe wall thickness be 4.5mm to the J type.
In another preference, all pressing the shading ring support is that diameter is the aluminum pipe of 36mm, and crooked position is the orthodrome of radius 150mm.
In the second aspect of the utility model, a kind of all pressures shielding construction of hvdc transmission line is provided, comprising: direct current transportation lead, insulator and the above-mentioned split type shading ring device of all pressing.
In another preference, the first and second C types press all that spacing distance is 1790 ± 100mm between the shading ring, and it is 1850 ± 100mm that the 2nd C type all presses shading ring and J type all to press the spacing distance between the shading ring.
In should be understood that in the utility model scope, above-mentioned each technical characterictic of the utility model and hereinafter can mutual combination between specifically described each technical characterictic in (like embodiment), thus constitute new or optimized technical scheme.As space is limited, this tired no longer one by one stating.
Description of drawings
Fig. 1 all presses the structural representation of shading ring composite set for split open type in instance of the utility model;
Fig. 2 all presses the front view of shading ring J type for split open type in instance of the utility model;
Fig. 3 all presses the vertical view of shading ring J type for split open type in instance of the utility model;
Fig. 4 all presses the left view of shading ring J type for split open type in instance of the utility model;
Fig. 5 all presses the front view of shading ring C type for split open type in instance of the utility model;
Fig. 6 all presses the left view of shading ring C type for split open type in instance of the utility model.
Embodiment
The utility model people has researched and developed a kind of novel split type shading ring device of all pressing first through extensive and deep research.This device comprises: at least three split type shading rings of all pressing; J type comprising being used to be installed in the insulator side is all pressed shading ring; And be used to be installed in first of lead side and all press shading ring, and all press shading ring and first all to press second between the shading ring all to press shading ring in said J type.Through each shading ring of reasonable Arrangement, reach and better all press effect.In addition, the utility model also have simple installation, difficulty of construction low, advantages such as need not line disconnection is installed.Accomplished the utility model on this basis.
Term
As used herein, term " extra high voltage direct current transmission line " refers at least ± DC power transmission line of 600kV, for example ± 800kV, ± the 1000kV DC power transmission line.
The J type is all pressed shading ring
Referring to Fig. 2 to Fig. 4.J type open type in preference is all pressed shading ring, comprises ring bodies 1, and ring bodies is made up of with right semi-ring 5 left semi-ring 4; Two semi-rings are in the same plane, and port is relative, and left and right sides semi-ring is provided with mounting bracket 2 separately; Connect through bolt between ring body 1 and the support 2; Yoke plate 3 is fixing through bolt and support 2, also is provided with bolt hole on the yoke plate, through bolt shading ring is fixed on the power transmission line.Prevent the generation of corona with the hemisphere shutoff on the top of left semi-ring 4 and right semi-ring 5.The potential dividing ring of this kind structure can half be installed respectively, reduces difficulty of construction, and can not line disconnection accomplish, and has reduced workload, and need not increase aid, has reduced cost.
The C type is all pressed shading ring
Referring to Fig. 5, Fig. 6, the C type open type in preferred row is all pressed shading ring, comprises ring body 21; Being shaped as circle and adopting hatch frame of ring body; Opening is through the hemisphere shutoff, and ring body 21 is provided with mounting bracket 22, and ring body 21 adopts bolt 24 to be connected with support 22; Support 22 is provided with bolt hole, through bolt shading ring is fixed on the power transmission line.This kind structure can be installed shading ring at last, thereby injures the shielding ring body when having avoided the lifting insulator string.
The split type shading ring device of all pressing
Referring to Fig. 1, in a preference, the shading ring device adopts two C types all to press shading ring, and it is that 1790mm is arranged near lead one side through gold utensil that the C type is all pressed the distance between the shading ring.The J type all presses shading ring to be set near insulator string one side, is connected on the insulator string through gold utensil.It is 1850mm that the J type all presses shading ring and C type all to press the distance of shading ring, and this kind layout can reach good all pressures effect, the corona of shielding insulation substring.
In a preference, it is that the aluminum pipe of 120mm bends and forms that the ring body of the utility model 1,11,21 adopts diameters, support 2,12, and 22 to adopt diameters be that the aluminum pipe of 36mm bends, support 2,12,22 great circles that to have a radius be 150mm.
All press shielding construction
In a preference, all press the shading ring structure to comprise: direct current transportation lead, insulator string and the above-mentioned split type shading ring device of all pressing.The first and second C types press all that spacing distance is 1790mm between the shading ring, and it is 1850mm that described the 2nd C type all presses shading ring and J type all to press the spacing distance between the shading ring.The J type all presses shading ring to be set at insulator one side, is connected with insulator string through yoke plate and gold utensil, and first and second C type all presses shading ring to be set on the lead, is connected through gold utensil with lead by the bolt hole on the support.This structure can balanced insulator voltage and the corona of shielding insulation substring, reaches good all pressures effect.
Compare with prior art, the utlity model has following major advantage:
1. the ring body diameter that adopts of the utility model is that 120mm can satisfy ± the transmission of electricity requirement of 800Kv DC power transmission line.
2. the utility model support adopts the orthodrome transition, and one of which can prevent crooked position point discharge bloom, and it two can get out of the way the insulator shirt rim, prevents the interference of support and insulator.
3. the utility model adopts near the insulator side and divides body structure, and grading ring can be installed respectively, reduces difficulty of construction; In some occasions that need install additional and change, need circuit not cut off and accomplish, not only reduce workload, but also need not increase aid, reduced cost.The ring body end prevents the generation of corona with the hemisphere shutoff;
4. the utility model all presses shading ring to adopt tricyclic structure, through three positions of all pressing shading ring of reasonable Arrangement, makes them form the corona of a whole next balanced insulator voltage of shielding and shielding insulation substring, reaches and better all presses effect.
5. the utility model adopts ring body and support through bolted minute body structure near the shading ring of lead side, and ring body adopts hatch frame, can shading ring be installed at last, injures the shielding ring body when having avoided the lifting insulator string, reduces shield effectiveness.
In a certain ± 800KV DC power transmission line; Adopted described shading ring device and the structure of all pressing of the utility model; The split type shading ring device of all pressing comprises three split type shading rings of all pressing; J type comprising being used to be installed in the insulator side is all pressed shading ring, and a C type that is used to be installed in the lead side all presses shading ring, and all presses a shading ring and a C type the 2nd C type between the shading ring of all pressing all to press shading ring in said J type.The first and second C types press all that spacing distance is 1790mm between the shading ring, and it is 1850mm that described the 2nd C type all presses shading ring and J type all to press the spacing distance between the shading ring.
Test result shows, this device and structure be satisfied ± and the transmission of electricity requirement of 800Kv DC power transmission line, prevent the generation of corona effectively, and obtained good all pressures effect
All documents in that the utility model is mentioned are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition after having read the above-mentioned teachings of the utility model, those skilled in the art can do various changes or modification to the utility model, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. the split type shading ring device of all pressing is characterized in that, comprising:
At least three split type shading rings of all pressing; J type comprising being used to be installed in the insulator side is all pressed shading ring; And be used to be installed in first of lead side and all press shading ring, and all press shading ring and first all to press second between the shading ring all to press shading ring in said J type.
2. the split type shading ring device of all pressing according to claim 1 is characterized in that, said first all to press shading ring and/or second all to press shading ring be that the C type is all pressed shading ring.
3. the split type shading ring device of all pressing according to claim 1 is characterized in that, said J type all presses the shading ring ring body to adopt the branch body structure, is made up of left semi-ring and right semi-ring, and said left semi-ring and right semi-ring are the J type.
4. the split type shading ring device of all pressing according to claim 3; It is characterized in that; Said J type all presses shading ring also to comprise: yoke plate and the support that is connected with right semi-ring with left semi-ring, thereby and said support be fixed in said yoke plate the fixing J of formation of left semi-ring and right semi-ring type all pressed shading ring.
5. the split type shading ring device of all pressing according to claim 2 is characterized in that said C type all presses shading ring to comprise C type ring body and support, and said support passes through bolt on C type ring body.
6. the split type shading ring device of all pressing according to claim 1 is characterized in that, the said split type shading ring ring body of all pressing is that diameter is the aluminum pipe of 100-140mm.
7. the split type shading ring device of all pressing according to claim 1 is characterized in that it is 4.0-6.0mm that said J type is all pressed shading ring ring body aluminum pipe wall thickness.
8. according to claim 4 or the 5 described split type shading ring devices of all pressing, it is characterized in that the said shading ring support of all pressing is that diameter is the aluminum pipe of 36mm, crooked position is the orthodrome of radius 150mm.
9. all pressures shielding construction of a hvdc transmission line is characterized in that, comprising: arbitrary described split type shading ring device of all pressing among direct current transportation lead, insulator and the claim 1-8.
10. the shielding construction of all pressing according to claim 9; It is characterized in that; The said first and second C types press all that spacing distance is 1790 ± 100mm between the shading ring, and it is 1850 ± 100mm that said the 2nd C type all presses shading ring and J type all to press the spacing distance between the shading ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203056636U CN202307371U (en) | 2011-08-22 | 2011-08-22 | Split-type grading and shielding ring device, and grading and shielding structure of high-voltage DC (direct current) line thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203056636U CN202307371U (en) | 2011-08-22 | 2011-08-22 | Split-type grading and shielding ring device, and grading and shielding structure of high-voltage DC (direct current) line thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307371U true CN202307371U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203056636U Expired - Lifetime CN202307371U (en) | 2011-08-22 | 2011-08-22 | Split-type grading and shielding ring device, and grading and shielding structure of high-voltage DC (direct current) line thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202307371U (en) |
Cited By (2)
| 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 |
| CN113671871A (en) * | 2021-08-17 | 2021-11-19 | 国网安徽省电力有限公司合肥供电公司 | Power cable thermal field environment monitoring alarm device and method |
-
2011
- 2011-08-22 CN CN2011203056636U patent/CN202307371U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| CN113671871A (en) * | 2021-08-17 | 2021-11-19 | 国网安徽省电力有限公司合肥供电公司 | Power cable thermal field environment monitoring alarm device and method |
| CN113671871B (en) * | 2021-08-17 | 2024-01-16 | 国网安徽省电力有限公司合肥供电公司 | Electric cable thermal field environment monitoring alarm device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200063 Wuning Road, Shanghai, No. 409, No. Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Patentee after: Nanjing Curcuit Appliance Factory Address before: 200063 Wuning Road, Shanghai, No. 409, No. Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group Patentee before: Nanjing Curcuit Appliance Factory |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |