CN202064367U - Insulating base for power tower - Google Patents
Insulating base for power tower Download PDFInfo
- Publication number
- CN202064367U CN202064367U CN2010206902196U CN201020690219U CN202064367U CN 202064367 U CN202064367 U CN 202064367U CN 2010206902196 U CN2010206902196 U CN 2010206902196U CN 201020690219 U CN201020690219 U CN 201020690219U CN 202064367 U CN202064367 U CN 202064367U
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- Prior art keywords
- basis
- anode
- sacrificial anode
- sacrificial
- base
- 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.)
- Expired - Lifetime
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- 238000009413 insulation Methods 0.000 claims description 19
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 210000002445 nipple Anatomy 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract 2
- 230000014509 gene expression Effects 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 230000002335 preservative effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model relates to an insulating base for a power tower. Generally, higher earth current is generated at an earth electrode site during failure, overhauling or single-electrode operation; and since the pole and tower base close to the earth electrode site is influenced by the earth current close to the earth electrode site for a long time, reinforcements in the base are corroded. The utility model provides the insulating base for the power tower. The insulating base is characterized by comprising a lead-out connector and sacrificial anodes, wherein the lead-out connector is led out from the insulating base and is buried underground; the sacrificial anodes are connected to the lead-out connector, are buried underground and are arranged around the base. When the higher earth current is generated, the anodes outside the base are firstly corroded, so that the reinforcements (cathodes) in the base are protected, and further, the entire pole and tower base is protected.
Description
Technical field
The utility model relates to a kind of insulation basis of electric power tower, more specifically, relates to insulate anode loss protection in the basic pattern of a kind of AC extra high voltage common-tower double-return road.
Background technology
In the prior art, general engineering foundation pattern is not considered insulation.Yet the earthing pole location can produce bigger earth-current when fault, maintenance or one pole operation, owing to be subjected near the influence of the earth-current earthing pole location for a long time, the basic internal reinforcing bar can be corroded near the pole and tower foundation the earthing pole location.Along with the growth of service time, the basis might be destroyed, and the iron tower that finally causes standing on the basis is damaged, to such an extent as to destroy the safe operation of whole piece transmission line of electricity.
When direct current grounding pole is nearer apart from ultra-high-tension power transmission line, can corrosiveness be arranged to the reinforcing bar near the basis of ultra-high-tension power transmission line.Yet because transmission line of electricity was all far away apart from the earthing pole location in the past, insulation measures is not taked in the former capital.When exchanging the 1000kV transmission line of electricity, need take insulation measures to the basis of the interchange 1000kV electric power line pole tower in the 2km scope around this utmost point location apart from direct current grounding pole location close together.
The utility model content
As mentioned above, need a kind of device that can insulate to the basis of power transmission line column, the basis of protection power transmission line column avoids being subjected to the corrosion of earth-current.
The insulation basis is to have installed cathode protection measure additional on original base form, and the reinforcing bar in the basis as negative electrode, is installed additional special material and makes anode.When producing significantly electric current, the anode outside the corrosion basis earlier, thus play the effect of protection basic internal reinforcing bar (negative electrode).And then protect whole pole and tower foundation.
According to one side of the present utility model, a kind of insulation basis of electric power tower is provided, it is characterized in that comprise: that draws from described basis draws connection, described draw connect be embedded in underground; Join described sacrificial anode of drawing connection to, described sacrificial anode is embedded in underground, and be disposed in described basis around.
According to one side of the present utility model, described sacrificial anode be arranged in equably described basis around.
According to one side of the present utility model, described sacrificial anode depends on the soil resistivity of number, this tower position of reinforcing bar in the position, basis of size, the electric power tower of electric power tower and the direction of possible earth-current in the quantity of each side on described basis.
According to one side of the present utility model, described sacrificial anode is 4-8 in the quantity of each side on described basis.
According to one side of the present utility model, the distance of described sacrificial anode and described edge of foundation is a 0.5-1 rice.
According to one side of the present utility model, described sacrificial anode is to be made of the metal alloy more active than the material on described basis.
According to one side of the present utility model, described sacrificial anode is a sacrificial magnesium alloy anode.
According to one side of the present utility model, described sacrificial anode comprises: cloth bag; Place the sacrificial magnesium alloy anode of described cloth bag; Fill the inserts of described cloth bag; The seal nipple that is connected with described sacrificial magnesium alloy anode; And the anode cable of drawing from described seal nipple, described anode cable joins the connection of drawing on described basis to.
According to one side of the present utility model, described sacrificial anode be vertical be embedded in underground.
As mentioned above, inventor of the present utility model has creatively proposed the basic pattern of a kind of insulation, and it can protect the reinforcing bar of basic pattern to avoid the corrosion of electric current, thereby improves the safety of whole power transmission system.
Description of drawings
Below with reference to accompanying drawing the utility model is described, yet, should be appreciated that appended accompanying drawing only is that schematically each parts in the accompanying drawing are not to draw in proportion.Identical in the accompanying drawings Reference numeral is represented identical parts, wherein:
Fig. 1 schematically shows according to the electric power column foot plinth of an embodiment of the present utility model and the layout of sacrificial anode;
Fig. 2 schematically shows the perspective plan view according to the layout of the electric power column foot plinth of an embodiment of the present utility model and sacrificial anode; And
Fig. 3 schematically shows the structure according to the sacrificial anode of an embodiment of the present utility model;
Fig. 4 schematically shows the partial enlarged drawing of drawing the joint that is connected according to the sacrificial anode of an embodiment of the present utility model and electric power column foot plinth.
The specific embodiment
To describe preferred embodiment of the present utility model at this, please refer to the diagram of enclosing.In the appended diagram of the utility model, identical reference number is promptly represented identical structural element.
The utility model proposes a kind of protective device of sacrificial anode.By this sacrificial anode, when producing bigger earth-current near the basis at power transmission line column, this earth-current will at first corrode this anode, protect the power transmission line column basis as negative electrode thus.
As shown in Figure 1, Reference numeral 110 expression ground, Reference numeral 111 expression test piles, Reference numeral 112 expression cathode cables, Reference numeral 113 expression anode cables, Reference numeral 114 expression sacrificial anodes, Reference numeral 115 expression fillers, Reference numeral 116 expression grounded screens.
Among the embodiment as shown in Figure 1, what sacrificial anode adopted is magnesium alloy anode 114, it is vertical be embedded in underground.In one embodiment, the embedding degree of depth of sacrificial anode is for being lower than at least 1 meter of ground line, and is not less than 0.5 meter apart from grounded screen 116.Each foundation pile has the anode on autonomous muscle basis to draw connection 113.Each sacrificial anode joins this anode to and draws in the connection 113.In one embodiment, this material of drawing connection 113 can adopt Hot-dip zinc-coated flat steel sheet, for example adopts-50 * 5 Hot-dip zinc-coated flat steel sheets.Cathode cable 112 is connected to grounded screen 116.Use filler 115 to surround sacrificial anodes 114 and prevent the physical streams chemical attack of becoming estranged.Place filler and sacrificial anode underground.Should be appreciated that introducing engaging of point for sacrificial anode herein with cathodic protection can adopt variety of way, for example welding.Under the situation of welding, need guarantee that pad polished totally, smooth, expose metallic luster.Carry out above-mentioned welding according to the heat release welding step.Tie point adopts anticorrosive paint to do preservative treatment (as epoxy resin, petroleum bitumen etc.).After using a period of time, the mode of occupation that can test sacrificial anode 114 by test pile 111.
Accompanying drawing 2 shows the perspective plan view of the basic pattern of insulation.As shown in Figure 2, Reference numeral 210 expression electric power column foot plinth.As shown in the figure, each sacrificial anode 114 by draw connect be arranged in electric power column foot plinth 210 around.In one embodiment, the distance at sacrificial anode and electric power column foot plinth edge is a 0.5-1 rice.Yet, should be appreciated that above-mentioned distance range is dispensable.As long as can make sacrificial anode center on electric power column foot plinth, stop earth-current corrosion basis itself, then any suitable distance all is to adopt.As shown in Figure 2, preferably, sacrificial anode 114 is arranged in around the electric power column foot plinth 210 equably.Yet above-mentioned even layout is not to be necessary, can anisotropically arrange sacrificial anode.For example, adopt more intensive sacrificial anode to arrange in the bigger side of earth-current intensity, and adopt common layout in other sides.Can decide the number of the quantity of the sacrificial anode on each side of electric power column foot plinth according to the direction of the soil resistivity of the number of reinforcing bar in the position of the size of electric power tower, electric power tower, the basis, this tower position and possible earth-current.For example, deliver in the electric power column foot plinth of stream 1000kV transmission line of electricity, use 4-8 sacrificial anode in each side at Wan Diandong.Other factors such as the size of consideration earth-current, surrounding environment, those skilled in the art can adopt different sacrificial anode quantity according to its concrete application fully in conjunction with instruction of the present utility model.Should be appreciated that and on each side on basis, also might not need sacrificial anode layout fully uniformly.
Accompanying drawing 3 shows the concrete structure of sacrificial anode.As shown in Figure 3, Reference numeral 310 expressions, Reference numeral 311 expression anode cables, Reference numeral 312 expression seal nipples, Reference numeral 313 expression magnesium alloy anodes, Reference numeral 314 expression cloth bags, Reference numeral 315 expression fillers.In one embodiment, sacrificial anode is a magnesium alloy anode, is shaped as strip.The cast magnesium alloy anode is not answered warpage, its no burr in surface, and crackle, pore, field trash and attachment, shrinkage cavity, the cold shut degree of depth should be not less than 10% of magnesium anode thickness.The composition of magnesium alloy can also comprise an amount of aluminium, manganese.
Although use the material of magnesium alloy in this article as sacrificial anode, yet be to be understood that, can use more active metal of material (being generally iron) than the basis and alloy thereof as sacrificial anode, like this, when electrolytic corrosion takes place, realize the purpose of this utility model thereby will at first corrode the more active sacrificial anode of this electrochemical properties.For example, also can use kirsite.
As shown in Figure 3, magnesium alloy anode 313 places cloth bag 314, uses filler 315 to fill cloth bag.Use seal nipple 312 to be connected, and draw anode cable 311 from seal nipple 312 with magnesium alloy anode 313.As shown in Figure 4, anode cable 311 will join the engaging zones 411 that connects on 113 of drawing of electric power column foot plinth to.
As mentioned above, be on original base form, to have installed cathode protection measure additional according to insulation of the present utility model basis, the reinforcing bar in the basis as negative electrode, is installed additional special material and made anode.When electric current generation significantly, corrode the anode outside the basis earlier, thereby play the effect of protection basic internal reinforcing bar (negative electrode).And then protect whole pole and tower foundation.
Although described the utility model, should be appreciated that embodiment is exemplary, and scope of the present utility model is not limited to these embodiment with reference to specific embodiment.To the multiple modification of the foregoing description, modification, additional and to improve all be possible.Should expect these modification, modification, additional and improve and drop on as in the specifically described scope of the present utility model of following claim.
Claims (9)
1. the insulation basis of an electric power tower is characterized in that, comprising:
That draws from described basis draws connection, described draw connect be embedded in underground;
Join described sacrificial anode of drawing connection to, described sacrificial anode is embedded in underground, and be disposed in described basis around.
2. insulation according to claim 1 basis is characterized in that, described sacrificial anode be arranged in equably described basis around.
3. insulation according to claim 1 basis, it is characterized in that described sacrificial anode depends on the soil resistivity of number, this tower position of reinforcing bar in the position, basis of size, the electric power tower of electric power tower and the direction of possible earth-current in the quantity of each side on described basis.
4. according to claim 2 or 3 described insulation bases, it is characterized in that described sacrificial anode is 4-8 in the quantity of each side on described basis.
5. insulation according to claim 1 basis is characterized in that the distance of described sacrificial anode and described edge of foundation is a 0.5-1 rice.
6. insulation according to claim 1 basis is characterized in that, described sacrificial anode is that the alloy by the metal more active than the material on described basis constitutes.
7. insulation according to claim 6 basis is characterized in that described sacrificial anode is a sacrificial magnesium alloy anode.
8. insulation according to claim 1 basis is characterized in that described sacrificial anode comprises:
Cloth bag;
Place the sacrificial magnesium alloy anode of described cloth bag;
Fill the inserts of described cloth bag;
The seal nipple that is connected with described sacrificial magnesium alloy anode; And
From the anode cable that described seal nipple is drawn, described anode cable joins the connection of drawing on described basis to.
9. insulation according to claim 1 basis is characterized in that, described sacrificial anode be vertical be embedded in underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206902196U CN202064367U (en) | 2010-12-30 | 2010-12-30 | Insulating base for power tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206902196U CN202064367U (en) | 2010-12-30 | 2010-12-30 | Insulating base for power tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064367U true CN202064367U (en) | 2011-12-07 |
Family
ID=45058233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206902196U Expired - Lifetime CN202064367U (en) | 2010-12-30 | 2010-12-30 | Insulating base for power tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202064367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904602A (en) * | 2017-10-13 | 2018-04-13 | 西安理工大学 | A kind of device for preventing stray current corrosion underground utilities |
| CN110965065A (en) * | 2019-12-30 | 2020-04-07 | 苏州电力设计研究院有限公司 | Transformer substation grounding system |
-
2010
- 2010-12-30 CN CN2010206902196U patent/CN202064367U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904602A (en) * | 2017-10-13 | 2018-04-13 | 西安理工大学 | A kind of device for preventing stray current corrosion underground utilities |
| CN107904602B (en) * | 2017-10-13 | 2019-09-27 | 西安理工大学 | A kind of device preventing stray current corrosion underground utilities |
| CN110965065A (en) * | 2019-12-30 | 2020-04-07 | 苏州电力设计研究院有限公司 | Transformer substation grounding system |
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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: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111207 |
|
| CX01 | Expiry of patent term |