CN207993537U - Drainage cable and deep well type vertical grounding electrode - Google Patents
Drainage cable and deep well type vertical grounding electrode Download PDFInfo
- Publication number
- CN207993537U CN207993537U CN201820080893.9U CN201820080893U CN207993537U CN 207993537 U CN207993537 U CN 207993537U CN 201820080893 U CN201820080893 U CN 201820080893U CN 207993537 U CN207993537 U CN 207993537U
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- leading cable
- zinc
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- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 239000011701 zinc Substances 0.000 claims description 31
- 229910052725 zinc Inorganic materials 0.000 claims description 31
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000005260 corrosion Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000005253 cladding Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 239000004698 Polyethylene Substances 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 229920000915 polyvinyl chloride Polymers 0.000 description 8
- 239000004800 polyvinyl chloride Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a drainage cable and deep well type vertical grounding utmost point relates to the ground connection technical field in the direct current transmission engineering. The problem of how to improve drainage cable's wear resistance is solved. The utility model discloses the drainage cable include the conductor and from interior to exterior in proper order cladding in conductor shielding layer, insulating layer, insulation shield, metallic shield, inner sheath, armor and the oversheath outside the conductor, the material of oversheath is polyurethane. The utility model discloses drainage cable is used for the perpendicular earthing pole of deep-well type.
Description
Technical field
The utility model is related in DC transmission engineering grounding technology field more particularly to a kind of leading cable and deep-well
Type vertical grounding electrode.
Background technology
Currently, in grounding technology field in DC transmission engineering, deep-well type vertical grounding electrode refers to that will feed steel pipe
It is vertical to be put into Deep Underground and introduce a kind of ground junction on feed steel pipe using leading cable by the earth current on ground
Structure, compared to the horizontal grounding pole of shallow buried type, deep-well type vertical grounding electrode is because it is small with floor space, is wanted to addressing region
The small advantages such as low with step voltage of low, ground resistance are sought, and have obtained more and more concerns.
Deep-well depth residing for deep-well type vertical grounding electrode usually in 1000m and 1000m or more, and the bore of deep-well compared with
Small, the diameter of only 380mm, lower half portion have even narrowed down to 320mm, and leading cable is being installed so far depth larger caliber
When in smaller well, friction inevitably is generated with the borehole wall, and in the prior art, the material of the oversheath of leading cable is logical
Be often polyethylene or polyvinyl chloride, the quality of polyethylene and polyvinyl chloride is harder, and elasticity is poor, therefore with wall friction
Abrasion is easy tod produce in the process.
Utility model content
A kind of leading cable of the utility model offer and deep-well type vertical grounding electrode, for solving how to improve leading cable
Wear-resisting property the problem of.
In order to achieve the above objectives, the utility model adopts the following technical solution：
In a first aspect, the utility model provides a kind of leading cable, be used for deep-well type vertical grounding electrode, including conductor with
And it is coated on conductor shield outside the conductor, insulating layer, insulation screen, metal screen layer, interior shield successively from the inside to the outside
The material of set, armor and oversheath, the oversheath is polyurethane.
Further, the thickness of the oversheath is 2.8~3.2mm.
Further, the metal screen layer is around the copper strips being wrapped in outside insulation screen.
Further, the armor includes zinc-coated wire layer and band, and the zinc-coated wire layer includes along the conductor
More axially extending zinc-coated wires, more zinc-coated wires uniformly arrange for one week around the outer wall of the inner sheath, institute
It states band to be wound in outside the zinc-coated wire layer, the more zinc-coated wires is fixed on the inner sheath.
Preferably, anti-corrosion material is filled between adjacent two zinc-coated wires.
Preferably, the anti-corrosion material is pitch.
Further, the quantity of the armor is multiple, radial layer of multiple armors along the leading cable
It is folded to be set between the inner sheath and the oversheath.
Preferably, a diameter of 51~57mm of the leading cable.
Second aspect, the utility model provide a kind of deep-well type vertical grounding electrode, including feed steel pipe and leading cable,
The feed steel pipe is vertically placed in deep-well, and the leading cable is the leading cable described in any technical solution as above, institute
State the earthed circuit connection on one end and ground of leading cable, the other end extend in the deep-well and with the feed steel pipe
Side wall connection.
A kind of leading cable and deep-well type vertical grounding electrode provided by the utility model, due to the oversheath of leading cable
Material is polyurethane, and compared to polyethylene or polyvinyl chloride, the hardness of polyurethane is relatively low, and elasticity is higher, can effectively avoid
Leading cable scratches when with wall friction, to improve the wearability of leading cable.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the cross section structure schematic diagram of the utility model embodiment leading cable.
Reference numeral：
1-conductor；2-conductor shields；3-insulating layers；4-insulation screens；5-metal screen layers；6-interior shields
Set；61-aluminium-plastic tapes；62-inner sheath main bodys；7-armors；71-zinc-coated wire layers；72-bands；8-oversheaths.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
Novel limitation.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Referring to Fig.1, Fig. 1 is a specific embodiment of the utility model embodiment leading cable, the drainage of the present embodiment
Cable is used for deep-well type vertical grounding electrode, including conductor 1 and the conductor shielding that is coated on successively from the inside to the outside outside the conductor 1
Layer 2, insulating layer 3, insulation screen 4, metal screen layer 5, inner sheath 6, armor 7 and oversheath 8, the material of the oversheath 8
Material is polyurethane.
A kind of leading cable provided by the utility model is compared since the material of the oversheath 8 of leading cable is polyurethane
Relatively low in the hardness of polyethylene or polyvinyl chloride, polyurethane, elasticity is higher, can effectively avoid leading cable from rubbing with the borehole wall
It is scratched when wiping, to improve the wearability of leading cable.
In the above-described embodiments, the thickness of oversheath 8 is not specifically limited, still, in order to ensure the resistance to of leading cable
Performance is ground, while avoiding increasing the diameter of leading cable because the thickness of oversheath 8 is larger, it is preferred that the thickness of oversheath 8
For 2.8~3.2mm, when the thickness of oversheath 8 within this range when, the thickness of oversheath 8 is moderate, can either be to leading cable shape
At effective protection, the wearability of leading cable is promoted, and can be avoided due to the thickness of oversheath 8 is larger to the straight of leading cable
Diameter produces bigger effect.
Wherein, conductor shield 2 is that very low and thinner thickness semiconductive material is constituted by resistivity, is used for uniform conductor
The electric field of 1 outer surface, to avoid conductor 1 and absolutely is caused due to generating air gap when 1 outer surface of conductor is rough and conductor strand
Shelf depreciation occurs between edge layer 3.Wherein, the material of conductor shield 2 is not specifically limited, exemplary, conductor shield 2
Material can be semiconductive crosslinking mixture.In addition, being not specifically limited to the thickness of conductor shield 2, it is preferred that lead
The thickness of body shielded layer 2 is 0.7mm, at this point, the thinner thickness of conductor shield 2, materials cost is relatively low, to the straight of leading cable
Diameter influences smaller.
In addition, being not specifically limited to the material of insulating layer 3, as long as earth current can be obstructed in transmission in conductor 1
.Meanwhile the thickness of insulating layer 3 is not specifically limited, it is preferred that the thickness of insulating layer 3 is 3.4mm, at this point, can have
Effect barrier electric current, while influence of the insulating layer 3 to the diameter of leading cable can be reduced.
Furthermore insulation screen 4 for avoid due to insulating layer 3 face crack the defects of with sent out between metal screen layer 5
Raw shelf depreciation.Wherein, the material of insulation screen 4 is not specifically limited, exemplary, the material of insulation screen 4 can be with
For semiconductive crosslinking mixture.In addition, being not specifically limited to the thickness of insulation screen 4, it is preferred that insulation screen 4
Thickness be 0.9mm, at this point, the thinner thickness of insulation screen 4, materials cost is relatively low, on the diameter of leading cable influence compared with
It is small.
In the embodiment shown in fig. 1, metal screen layer 5 primarily serves the effect of shielding electric field.Wherein, to metallic shield
The structure of layer 5 is not specifically limited, it is preferred that metal screen layer 5 can be it is wrapped in the copper strips outside insulation screen 4, copper
Resistivity is smaller, and electric field shielding effect is more excellent.In addition, being not specifically limited to the thickness of metal screen layer 5, it is preferred that metal
The thickness of shielded layer 5 is 0.1mm, at this point, metal screen layer 5 while playing preferably shield effectiveness, can be avoided because certainly
The thickness of body is larger and is produced bigger effect to the diameter of leading cable.
In the embodiment shown in fig. 1, inner sheath 6 can be plastic sheath, or protective metal shell can also be multiple
Sheath is closed, is not specifically limited herein.But when inner sheath 6 is plastic sheath, the material of plastic sheath usually selects insulation
Either polyvinyl chloride polyethylene or polyvinyl chloride cannot effectively obstruct moisture to the polyethylene of better performances, therefore in deep-well
Moisture is easy penetrating into the conductor 1 in leading cable radially across inner sheath 6 along leading cable, so as to cause causing to drain
The deterioration of the transmission performance of cable；When inner sheath 6 is protective metal shell, the compact structure of protective metal shell is waterproof, can reach
Good radial water-resisting effect, but metal material higher price, cause the cost of inner sheath 6 higher.According to presented above, it is
Improve the radial water-resisting performance of leading cable, while in order to save cost, it is preferred that as shown in Figure 1, inner sheath 6 include around
It the aluminium-plastic tape 61 that is wrapped in outside the second water blocking layer and extrudes in the inner sheath main body 62 outside aluminium-plastic tape 61, in this way, with regard to shape
At composite jacket, during extruding inner sheath main body 62, the temperature and pressure of inner sheath main body 62 can be such that plastic-aluminum answers
It is preferably bonded between the outer surface and the inner surface of inner sheath main body 62 of crossed belt 61, while also making aluminium-plastic tape 61 wrapped
Good bonding is obtained between putting up.Make moisture complete along the radial approach penetrated into conductor 1 of leading cable as a result,
Block, to play the role of excellent radial water-resisting, while composite jacket and it is not all made by metal material, therefore cost
It is relatively low.Wherein, it is preferred that the material of inner sheath main body 62 is polyethylene or polyvinyl chloride, polyethylene and polyvinyl chloride it is exhausted
Edge performance is more excellent, can play effective insulation protection.
In order to prevent water by water conservancy diversion cable side wall breakage or end face axially diffusing along water conservancy diversion cable, it is preferred that such as
Shown in Fig. 1, between insulation screen 4 and metal screen layer 5 be equipped with the first water blocking layer (not shown), metal screen layer 5 with
The second water blocking layer (not shown) is equipped between inner sheath 6, the first water blocking layer is around the first resistance being wrapped in outside insulation screen 4
Water band, the second water blocking layer are around the second waterstop being wrapped in outside metal screen layer 5.In this way, leading cable with feed steel pipe it
Between the side wall of the junction one end that cannot form effective sealing or leading cable connection feed steel pipe when occurring damaged, the
It is expanded after one waterstop and the water suction of the second waterstop, effectively blocks penetrating passage, it is therefore prevented that water is in end face or breakage into one
Step diffusion reduces the possibility that whole water conservancy diversion cable is scrapped, in this way, in repair, only need to repair or cut off on water conservancy diversion cable
Infiltration part, avoid repair from replacing greater depth even whole water conservancy diversion cable, to significantly having saved deep-well type
The maintenance cost of vertical grounding electrode.
Since deep-well is usually filled by coke, in coke have a small amount of sulphur, and in the water in deep-well have chlorine from
Son, these substances easily corrode leading cable.In order to avoid the above problem, armor 7 can be made as structure shown in Fig. 1,
That is, armor 7 includes zinc-coated wire layer 71 and band 72, zinc-coated wire layer 71 includes the more axially extending platings along conductor 1
Zinc steel wire, more zinc-coated wires are uniformly arranged for one week around the outer wall of inner sheath 6, and band 72 is wound in outside zinc-coated wire layer 71,
More zinc-coated wires to be fixed on inner sheath 6, the iron in zinc coating and steel wire in zinc-coated wire is in underground wet environment
In constitute primary battery, zinc is aoxidized as anode, and iron is protected as cathode, since the product after zine corrosion causes very much
Close, reaction speed is very slow, therefore can play the role of anticorrosive well.Meanwhile the tensile strength of zinc-coated wire is higher, energy
Enough ensure the tensile strength of leading cable.
Wherein, the material of band 72 is not specifically limited.Exemplary, band 72 is non-woven fabrics, and the price of non-woven fabrics is low
It is honest and clean, it is easy to implement.
The corrosive substance in water is entered internal in leading cable by the gap between adjacent two steel wires in order to prevent
The structures such as the conductor 1 in portion generate corrosiveness, it is preferred that anti-corrosion material are filled between adjacent two zinc-coated wires, in this way, logical
It crosses and fills anti-corrosion material between adjacent two steel wires, further ensure the corrosion resistance of leading cable.
Wherein, the composition of anti-corrosion material is not specifically limited.Preferably, anti-corrosion material is pitch, and pitch has good
Cohesiveness, ageing resistance and waterproof and anticorrosion ability, and raw material is easy to get, is cheap, can effectively seal adjacent two it is zinc-plated
Gap between steel wire, and play preferably waterproof anti-corrosion performance.
In order to further increase the water pressure resistance performance of leading cable, it is preferred that as shown in Figure 1, the quantity of armor 7 is more
A, multiple armors 7 are set to along the radially superimposed of leading cable between inner sheath 6 and oversheath 8, in this way, passing through multiple armours
Layer 7 is filled, the water pressure resistance performance of leading cable is further improved.
Specifically, the quantity of armor 7 can be two, three or four etc., it is not specifically limited herein.But
In order under the premise of improving the water pressure resistance performance of leading cable, be reduced as far as the quantity of armor 7, to reduce drainage electricity
The structure complexity and diameter of cable, in favor of being installed in the limited deep-well in space, it is preferred that as shown in Figure 1, armor
7 quantity is two, and the thickness of two layers of zinc-coated wire is smaller, can be installed in the limited deep-well in space, and can
Ensure the water pressure resistance performance of leading cable, while the tensile strength of leading cable can be improved.
When the quantity of armor 7 is two, it that is to say that leading cable has two layers of zinc-coated wire, two layers zinc-coated wire
Tensile strength and yield strength are respectively 345Mpa and 310Mpa, at this point, in order to which whether the tensile strength for verifying leading cable is full
Sufficient installation requirement, the aerial weight of leading cable is usually 8.05kg/m, and weight in water is usually 5.70kg/m, whole
A well depth is 1000m, and the depth of water in well is 800m, and the spatial depth of side waterborne is 200m in well, it is possible thereby to be calculated
When leading cable is installed to shaft bottom, the minimum installed load of leading cable need to be supplied to：F=8.05 × 200 × 9.8+5.70
× 800 × 9.8=6.16 × 104N is further calculated and is shown that the maximum Fracture Force that the leading cable generates when mounted is
149.8KN, it can thus be seen that maximum Fracture Force is less than the tensile strength and yield strength of two layers of zinc-coated wire, so using
Two layers of zinc-coated wire armouring can meet tension requirement well, ensure the tensile strength of leading cable.
It is 380mm since the deep-well bore residing for deep-well type vertical grounding electrode is smaller, the diameter of lower half portion only has
320mm, therefore, in order to be installed in the smaller deep-well of this bore, it is preferred that a diameter of 51~57mm of leading cable,
The diameter of leading cable within this range when, the diameter of leading cable is moderate, can be installed in the limited deep-well in space,
And it disclosure satisfy that the functional requirement of each structure inside leading cable.
The utility model embodiment is also for a kind of deep-well type vertical grounding electrode, including feeds steel pipe and leading cable,
The feed steel pipe is vertically placed in deep-well, and the leading cable is the leading cable described in any technical solution as above, institute
State the earthed circuit connection on one end and ground of leading cable, the other end extend in the deep-well and with the feed steel pipe
Side wall connection.
Due to the leading cable that is used in the deep-well type vertical grounding electrode of the present embodiment with it is each in above-mentioned leading cable
The leading cable provided in embodiment is identical, therefore the two can solve identical technical problem, and reaches identical expected effect
Fruit.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (9)
1. a kind of leading cable, it to be used for deep-well type vertical grounding electrode, which is characterized in that wrap successively including conductor and from the inside to the outside
Conductor shield, insulating layer, insulation screen, metal screen layer, inner sheath, armor and the outer shield being overlying on outside the conductor
The material of set, the oversheath is polyurethane.
2. leading cable according to claim 1, which is characterized in that the thickness of the oversheath is 2.8~3.2mm.
3. leading cable according to claim 1, which is characterized in that the metal screen layer is around being wrapped in insulation screen
Outer copper strips.
4. leading cable according to claim 1, which is characterized in that the armor includes zinc-coated wire layer and band,
The zinc-coated wire layer includes the more axially extending zinc-coated wires along the conductor, and the more zinc-coated wires are around described
The outer wall uniformly arrangement in one week of inner sheath, the band is wound in outside the zinc-coated wire layer, by the more zinc-coated wires
It is fixed on the inner sheath.
5. leading cable according to claim 4, which is characterized in that filled with anti-between adjacent two zinc-coated wires
Rotten material.
6. leading cable according to claim 5, which is characterized in that the anti-corrosion material is pitch.
7. leading cable according to claim 1, which is characterized in that the quantity of the armor be it is multiple, it is multiple described
Armor is set to along the radially superimposed of the leading cable between the inner sheath and the oversheath.
8. leading cable according to claim 1, which is characterized in that a diameter of 51~57mm of the leading cable.
9. a kind of deep-well type vertical grounding electrode, which is characterized in that vertical including feed steel pipe and leading cable, the feed steel pipe
It is positioned in deep-well, the leading cable is leading cable according to any one of claims 1 to 8, the leading cable
One end is connect with the earthed circuit on ground, and the other end is extended in the deep-well and connect with the side wall of the feed steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820080893.9U CN207993537U (en) | 2018-01-17 | 2018-01-17 | Drainage cable and deep well type vertical grounding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820080893.9U CN207993537U (en) | 2018-01-17 | 2018-01-17 | Drainage cable and deep well type vertical grounding electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993537U true CN207993537U (en) | 2018-10-19 |
Family
ID=63820500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820080893.9U Active CN207993537U (en) | 2018-01-17 | 2018-01-17 | Drainage cable and deep well type vertical grounding electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207993537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546366A (en) * | 2018-10-29 | 2019-03-29 | 中国能源建设集团广东省电力设计研究院有限公司 | The upper end insulation structure of deep-well type earthing pole |
-
2018
- 2018-01-17 CN CN201820080893.9U patent/CN207993537U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546366A (en) * | 2018-10-29 | 2019-03-29 | 中国能源建设集团广东省电力设计研究院有限公司 | The upper end insulation structure of deep-well type earthing pole |
| CN109546366B (en) * | 2018-10-29 | 2020-10-30 | 中国能源建设集团广东省电力设计研究院有限公司 | Upper end insulation structure of deep well type grounding electrode |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210608 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Address before: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Patentee before: China South Power Grid International Co.,Ltd. Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID |