CN108172351A - A kind of grading ring for enhancing transmission circuit insulator string dielectric strength - Google Patents
A kind of grading ring for enhancing transmission circuit insulator string dielectric strength Download PDFInfo
- Publication number
- CN108172351A CN108172351A CN201611114744.1A CN201611114744A CN108172351A CN 108172351 A CN108172351 A CN 108172351A CN 201611114744 A CN201611114744 A CN 201611114744A CN 108172351 A CN108172351 A CN 108172351A
- Authority
- CN
- China
- Prior art keywords
- ring
- dielectric strength
- transmission circuit
- ring body
- grading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
Landscapes
- Insulators (AREA)
Abstract
The invention discloses a kind of grading rings for enhancing transmission circuit insulator string dielectric strength, and including ring body and supporting rack, ring body passes through insulator chain, one end of supporting rack is connected with ring body, the other end is connected with insulator chain, and the ring diameter of ring body is adjustable, and the length of supporting rack is adjustable.The ring diameter of grading ring of the present invention and cover it is adjustable into depth, can grading ring size be adjusted according to insulator string type, so as to play the role of preferable pressure, the dielectric strength of reinforced insulation substring to insulator chain and gold utensil yoke plate, improve insulator chain insulation characterisitic, improve the stability of transmission line of electricity operation.
Description
Technical field
The present invention relates to super-pressure and UHV transmission equipment technical fields, and in particular to a kind of enhancing transmission line of electricity is exhausted
The grading ring of edge substring dielectric strength.
Background technology
Insulator chain is the important component of transmission line of electricity, electric insulation and mechanical support effect is played, especially super, extra-high
It presses in power transmission engineering, insulator chain is even more particularly important.Each insulator of insulator chain is more than insulation to the stray capacitance of conducting wire
Son stray capacitance over the ground, insulator chain Potential distribution are non-linear, U-shaped curve distribution, the electricity that side of wire insulator is born
Pressure is far more than other position insulators.Insulator both ends bear that voltage is relatively high, and electric field is larger, particularly conductor wire end, electric field
Gather, corona is strong, and shelf depreciation, flashover easily occurs.Corona, electric discharge can generate sour gas, sour gas be soluble in rainwater or
Moisture, the acid solution of formation cause to corrode to insulator, so as to cause the major accident that conducting wire is fallen.Therefore in the prior art one
As by installing suitable grading ring in insulator end, make surface electric field of insulator control in rational range, with
The field strength distribution of composite insulator is effectively improved, improves circuit operation stability.
But in super, UHV Transmission Engineering, due to super, UHV Transmission Engineering voltage class height, transmission of electricity corridor accounts for
Ground area is big, and it is very big and existing that the electric-field intensity distribution of insulator chain by the structure size and cover of grading ring is entered effect of depth
Grading ring generally using stereotyped structure, structure size and covering cannot be adjusted into depth so that the voltage and electric field of insulator chain
Distribution is difficult to be uniformly distributed, thus by existing sizing damage by pressure and shading ring improves the spread voltage of insulator chain and electricity
Field distribution effect is limited, and the dielectric strength of insulator chain is low, can not meet the needs of existing transmission line of electricity.
Invention content
The technical problem to be solved in the present invention is to provide a kind of grading rings of strong transmission circuit insulator string dielectric strength, lead to
Overregulating the ring diameter of grading ring and covering improves insulator chain and the distribution of gold utensil electric field into depth, and it is strong to enhance insulator chain insulation
Degree.
In order to solve the above technical problem, the present invention provides technical solution it is as follows：
A kind of grading ring for enhancing transmission circuit insulator string dielectric strength, including ring body and supporting rack, the ring body passes through exhausted
Edge substring, one end of support frame as described above are connected with the ring body, and the other end is connected with the insulator chain, the ring body
Ring diameter is adjustable, and the length of support frame as described above is adjustable.
The ring body includes the first connector and the second connector, and the first connector and the second connector are mutually socketed in can
It is telescopically connected.
First connector and the second connector are U-tube.
Support frame as described above includes supporting rod and fixed ring buckle, and one end and the ring body of the supporting rod be hinged, the other end and
Fixed ring buckle is mutually fixed, and the fixed ring buckle is connected with the insulator chain, and the supporting rod, fixed ring buckle and ring body are formed
Enclosed construction, the length of the supporting rod is adjustable.
The supporting rod includes the first fixing piece and the second fixing piece, and first fixing piece and the second fixing piece mutually cover
It connects in scalable connection.
First fixing piece and the second fixing piece are connected through a screw thread, and it is solid to be threadedly coupled depth first by adjusting
Determine part to stretch with respect to the second fixing piece.
The anchor ring of the ring body and the axis perpendicular of insulator.
The fixed ring buckle is round, track type or ellipse.
The material of support frame as described above is steel or aluminium, and the material of the ring body is steel or aluminium.
The invention has the advantages that：The ring diameter of grading ring and cover it is adjustable into depth, can be according to insulator string type
Grading ring size is adjusted, so as to be pressed insulator chain and gold utensil yoke plate, improves the electric field of insulator chain and gold utensil yoke plate
Distribution, the dielectric strength of reinforced insulation substring make the surface field strength control of insulator chain in rational range, improve defeated
Electric line operation stability.
Description of the drawings
Fig. 1 is the Equalized voltage ring construction schematic diagram of the present invention；
Fig. 2 is the ring body structurc schematic diagram of grading ring shown in FIG. 1；
Fig. 3 is the scheme of installation of grading ring and insulator chain shown in FIG. 1；
Fig. 4 is the use state diagram of grading ring；
In figure：1st, ring body, 1-1, the first connector, 1-2, the second connector, 2, supporting rod, 2-1, the first fixing piece, 2-2,
Two fixing pieces, 3, fixed ring buckle, 4, stent, 5, insulator chain, 6, gold utensil yoke plate, the 7, second grading ring, 8, third grading ring, 9,
First grading ring.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, a kind of grading ring for enhancing transmission circuit insulator string dielectric strength, including ring body 1 and supporting rack,
Ring body 1 passes through insulator chain, and one end of supporting rack is connected with ring body 1, and the other end is connected with insulator chain, the ring of ring body 1
Diameter is adjustable, and the length of supporting rack is adjustable；
Ring body 1 is U-shaped including the first connector 1-1 and the second connector 1-2, the first connector 1-1 and the second connector 1-2
Pipe, the U-tube of the second connector 1-2 and the U-tube of the first connector 1-1 are mutually socketed in scalable connection.It is stretched by adjusting
Contracting length adjusts the ring diameter size of ring body 1；The ring diameter of ring body 1 is made to can adapt to a variety of various sizes of insulator chains, simultaneously
Improve insulator chain and the distribution of gold utensil electric field, reinforced insulation substring dielectric strength；
As shown in Fig. 2, ring body 1 uses track type structure, L represents variable partition length in ring body 1, and L length is adjustable, and D is represented
The width of ring body 1；Ring body 1 uses track type, two opposite side of track type, that is, rectangle extend outward respectively one using the length of side as
The semi arch of diameter.Track type structure easy processing, is unlikely to deform.
Ring body 1 is scalable, passes through the adjusting of the flexible realization ring diameter size of ring body 1.
Supporting rack includes supporting rod 2 and fixed ring buckle 3, and one end and the stent 4 of supporting rod 2 are hinged, stent 4 and ring body 1
Mutually fixed, the other end of supporting rod 2 is mutually fixed with fixed ring buckle 3 by bolt, and the present embodiment includes two supporting rods 2 and two
Stent 4, two 4, two, stent fixed ring buckles 3 of supporting rod 2, one and a ring body 1 form enclosed construction, in use, fixed
Latch closure 3 is connected with insulator chain.
The length of wherein supporting rod 2 is adjustable, and supporting rod 2 includes the first fixing piece 2-1 and the second fixing piece 2-2, and first is solid
Determine part 2-1 and the second fixing piece 2-1 is mutually socketed in scalable connection, by the flexible adjusting for realizing 2 length of supporting rod, and then
It adjusts cover of the grading ring on insulator chain and enters depth, as shown in figure 3, H is the adjustable height of grading ring of the present invention in figure,
It that is to say that cover of the grading ring on insulator chain enters depth.
Further, the first fixing piece 2-1 and the second fixing piece 2-2 are connected through a screw thread, i.e. the end of the first fixing piece 2-1
Portion sets internal thread, and the end set external screw thread of the second fixing piece 2-2, external screw thread is mutually screwed with internal thread, by adjusting screw thread
Depth is screwed so that the first fixing piece 2-1 stretches with respect to the second fixing piece 2-2.
As shown in figure 3, the axis perpendicular of the anchor ring of ring body 1 and insulator chain 5, to play better voltage equalizing.
Further, round, track type or ellipse can be used in fixed ring buckle 3, in use, insulator chain is inserted in retainer ring
In button 3, and insulator chain is fixed with 3 phase of fixed ring buckle.
The material of supporting rack is steel, aluminium or other metal materials, and ring body 1 is steel pipe or aluminum pipe.
As shown in figure 3, when in use, the ring body 1 of grading ring is inserted in insulator chain 4, according to actual needs adjustment ring
Collapsing lengths of the first connector 1-1 with respect to the second connector 1-2 in body 1, and then the ring diameter size of ring body 1 is adjusted, it adjusts simultaneously
The threaded connection length of the first fixing piece 2-1 and the second fixing piece 2-2 of supporting rod 2 are saved, and then adjusts grading ring in insulator
Cover on string 5 enters depth H, finally fixes grading ring by fixed ring buckle 3 and 5 phase of insulator chain.Pass through the ring diameter ruler of ring body 1
The adjusting covered into depth H of very little adjusting and grading ring on insulator chain 5, can make grading ring to insulator chain and gold utensil
Yoke plate plays preferable voltage equalizing.
When multiple insulator chains connect, as shown in figure 4, including three insulator chains 5, these three insulator chains 5 pass through
Gold utensil yoke plate 6 is connected, and is distributed to improve the electric field of insulator chain 5 and gold utensil yoke plate 6,5 dielectric strength of reinforced insulation substring,
Transmission line of electricity operation stability is improved, following method can be used：It is equal close to 6 one end of gold utensil yoke plate arrangement first in insulator chain 5
Pressure ring 9,9 Equalized voltage ring construction using the present invention of the first grading ring adjusts the ring diameter of the ring body of the first grading ring 9, and adjusts the
The length of the supporting rod of one grading ring 9, and then adjust cover of first grading ring 9 on insulator chain 5 and enter depth H, it covers into depth H
It can be adjusted according to the change of 5 service condition of insulator chain, it is final to cause entirety of first grading ring 9 to insulator chain 5
Play the role of voltage equalizing protection；It preferably, can also be equal in the setting of the both ends of insulator chain 5 in order to reach preferably voltage equalizing
Pressure ring, respectively the second grading ring 7 and third grading ring 8, partial pressure is preferably realized with the end to insulator chain 5, wherein the
The Equalized voltage ring construction of the present invention can be used in two grading rings 7 and third grading ring 8, and sizing of the prior art can also be used and damage by pressure
（Structure size and covering cannot be adjusted into depth）；The ring diameter size of wherein the first grading ring is more than the ring diameter ruler of the second grading ring 7
Very little, the ring diameter size of the second grading ring 7 is more than the size of third grading ring 8.Three insulator chains 5 are phase homotype in the present embodiment
The insulator chain of three kinds of different types can also be used in formula.
In embodiment as shown in Figure 4, made by the arrangement of the first grading ring 9, the second grading ring 7 and third grading ring 8
With, can effectively according to insulator string type adjust grading ring size（Ring diameter is with covering into depth）, make it to insulator chain 5 and gold utensil
Yoke plate 6 is pressed, and improves the electric field distribution of insulator chain 5 and gold utensil yoke plate 6, and the dielectric strength of reinforced insulation substring 5 makes absolutely
The surface field strength control of edge substring 5 is effectively improved the field strength distribution of composite insulator in rational range, improves circuit
Operation stability；Available for surpassing, the design of the serial type of UHV Long Insulator String, realize insulator chain in follow-up super extra-high voltage project
Gradually application and popularization, improve insulator chain insulation characterisitic.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.The equivalent substitute or transformation that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (9)
1. a kind of grading ring for enhancing transmission circuit insulator string dielectric strength, it is characterized in that, it is described including ring body and supporting rack
Ring body passes through insulator chain, and one end of support frame as described above is connected with the ring body, and the other end is connected with the insulator chain,
The ring diameter of the ring body is adjustable, and the length of support frame as described above is adjustable.
2. the grading ring of enhancing transmission circuit insulator string dielectric strength as described in claim 1, it is characterized in that, the ring body
Including the first connector and the second connector, the first connector and the second connector are mutually socketed in scalable connection.
3. the grading ring of enhancing transmission circuit insulator string dielectric strength as claimed in claim 2, it is characterized in that, described first
Connector and the second connector are U-tube.
4. the grading ring of enhancing transmission circuit insulator string dielectric strength as described in claim 1, it is characterized in that, the support
Frame includes supporting rod and fixed ring buckle, and one end and the ring body of the supporting rod are hinged, and the other end is mutually fixed with fixed ring buckle, institute
It states fixed ring buckle with the insulator chain to be connected, the supporting rod, fixed ring buckle and ring body form enclosed construction, the support
The length of bar is adjustable.
5. the grading ring of enhancing transmission circuit insulator string dielectric strength as claimed in claim 4, it is characterized in that, the support
Bar includes the first fixing piece and the second fixing piece, and first fixing piece and the second fixing piece are mutually socketed in scalable connection.
6. the grading ring of enhancing transmission circuit insulator string dielectric strength as claimed in claim 5, it is characterized in that, described first
Fixing piece and the second fixing piece are connected through a screw thread, and being threadedly coupled the first fixing piece of depth opposite second by adjusting fixes
Part stretches.
7. the grading ring of enhancing transmission circuit insulator string dielectric strength as described in claim 1, it is characterized in that, the ring body
Anchor ring and insulator axis perpendicular.
8. the grading ring of enhancing transmission circuit insulator string dielectric strength as claimed in claim 4, it is characterized in that, the fixation
Latch closure is round, track type or ellipse.
9. the grading ring of enhancing transmission circuit insulator string dielectric strength as described in claim 1, it is characterized in that, the support
The material of frame is steel or aluminium, and the material of the ring body is steel or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114744.1A CN108172351B (en) | 2016-12-07 | 2016-12-07 | Grading ring for enhancing insulation strength of transmission line insulator string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114744.1A CN108172351B (en) | 2016-12-07 | 2016-12-07 | Grading ring for enhancing insulation strength of transmission line insulator string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108172351A true CN108172351A (en) | 2018-06-15 |
| CN108172351B CN108172351B (en) | 2020-04-24 |
Family
ID=62526484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114744.1A Active CN108172351B (en) | 2016-12-07 | 2016-12-07 | Grading ring for enhancing insulation strength of transmission line insulator string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108172351B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360695A (en) * | 2018-10-30 | 2019-02-19 | 扬州旺源电气有限公司 | A kind of insulator aluminum grading ring |
| CN109638701A (en) * | 2018-11-16 | 2019-04-16 | 许继集团有限公司 | A kind of switchgear |
| CN110133454A (en) * | 2019-04-17 | 2019-08-16 | 南京合继思瑞电力科技有限公司 | A kind of electric insulation part leakage current monitoring device |
| CN110146796A (en) * | 2019-06-17 | 2019-08-20 | 贵州电网有限责任公司 | A kind of simulation test device and its test method of Zero resistance insulator string heat generation characteristic |
| CN112397262A (en) * | 2020-11-06 | 2021-02-23 | 广东电网有限责任公司电力科学研究院 | Composite insulator grading ring with adjustable shielding depth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09304266A (en) * | 1996-05-21 | 1997-11-28 | Nippon Telegr & Teleph Corp <Ntt> | Method for holding fine particles by light radiation pressure and displacement measuring method |
| CN204808977U (en) * | 2015-07-22 | 2015-11-25 | 江苏神马电力股份有限公司 | Grading ring |
| CN204926930U (en) * | 2015-09-25 | 2015-12-30 | 武汉大学 | A runway type equalizer ring for block of four string composite insulator that dangles |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN205609296U (en) * | 2016-05-03 | 2016-09-28 | 温州中业文化创意发展有限公司 | Compound post insulators equalizer ring of special high voltage direct current |
-
2016
- 2016-12-07 CN CN201611114744.1A patent/CN108172351B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09304266A (en) * | 1996-05-21 | 1997-11-28 | Nippon Telegr & Teleph Corp <Ntt> | Method for holding fine particles by light radiation pressure and displacement measuring method |
| CN204808977U (en) * | 2015-07-22 | 2015-11-25 | 江苏神马电力股份有限公司 | Grading ring |
| CN204926930U (en) * | 2015-09-25 | 2015-12-30 | 武汉大学 | A runway type equalizer ring for block of four string composite insulator that dangles |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN205609296U (en) * | 2016-05-03 | 2016-09-28 | 温州中业文化创意发展有限公司 | Compound post insulators equalizer ring of special high voltage direct current |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360695A (en) * | 2018-10-30 | 2019-02-19 | 扬州旺源电气有限公司 | A kind of insulator aluminum grading ring |
| CN109638701A (en) * | 2018-11-16 | 2019-04-16 | 许继集团有限公司 | A kind of switchgear |
| CN109638701B (en) * | 2018-11-16 | 2020-11-17 | 许继集团有限公司 | Switch cabinet |
| CN110133454A (en) * | 2019-04-17 | 2019-08-16 | 南京合继思瑞电力科技有限公司 | A kind of electric insulation part leakage current monitoring device |
| CN110146796A (en) * | 2019-06-17 | 2019-08-20 | 贵州电网有限责任公司 | A kind of simulation test device and its test method of Zero resistance insulator string heat generation characteristic |
| CN112397262A (en) * | 2020-11-06 | 2021-02-23 | 广东电网有限责任公司电力科学研究院 | Composite insulator grading ring with adjustable shielding depth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108172351B (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108172351A (en) | A kind of grading ring for enhancing transmission circuit insulator string dielectric strength | |
| WO2019085706A1 (en) | Overhead power distribution line | |
| CN208112103U (en) | A kind of drainage thread ground connection cross-arm | |
| CN205663284U (en) | Electric power transportation hydraulic stretching bracing piece | |
| CN206673533U (en) | A kind of novel high-pressure transmission line of electricity angle pole mounting structure | |
| CN203747299U (en) | Mountable and dismountable dual-purpose airfoil-profile clamping device | |
| CN203892717U (en) | Fastening hoop single piece | |
| CN204407846U (en) | A kind of line lightning arrestor | |
| Sima et al. | Corona ring design of±800KV DC composite insulator based on computer analysis | |
| CN207624465U (en) | Insulator for ultra-high-tension power transmission line | |
| CN204205413U (en) | A kind of link rod of Electrified fastening screw | |
| CN207150120U (en) | Strain clamp | |
| CN204926930U (en) | A runway type equalizer ring for block of four string composite insulator that dangles | |
| CN215641633U (en) | Composite insulator performance test platform for metal shielding type sleeve | |
| CN207818925U (en) | A kind of Special wire-clip of live ground wire | |
| CN210110444U (en) | Grading ring suitable for multi-size insulator sleeve | |
| CN104505788A (en) | Large-span suspension type tubular bus-bar multiple-hanging-point combined metal fitting and mounting method thereof | |
| CN204343772U (en) | Narrow base cable shoe steel tube tower under four return cable | |
| CN208890100U (en) | Line lightning arrestor | |
| CN204928052U (en) | Rod -type vertical arrangement compact transmission line | |
| CN202405691U (en) | Wire insulation support | |
| CN209298858U (en) | +/-1100 KV direct-current line tension tower lightning arrester device | |
| CN207800933U (en) | A kind of curve band steel strengthens the earthing or grounding means of support | |
| RU2689383C1 (en) | INTERPHASE REMOTE STRUT OF OVERHEAD TRANSMISSION LINES WITH VOLTAGE OF 35-220 kV | |
| CN105391017A (en) | Extra-high voltage large-crossing cage type rigid wire jumper string with eight small-section drainage wire clamps and six large-section drainage wire clamps |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |