CN205122789U - A graphite grounding body connection device for transmission line shaft tower lightning grounding net - Google Patents
A graphite grounding body connection device for transmission line shaft tower lightning grounding net Download PDFInfo
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- CN205122789U CN205122789U CN201520947962.8U CN201520947962U CN205122789U CN 205122789 U CN205122789 U CN 205122789U CN 201520947962 U CN201520947962 U CN 201520947962U CN 205122789 U CN205122789 U CN 205122789U
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- continues
- groove
- earth electrode
- connection device
- public access
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- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 55
- 239000010439 graphite Substances 0.000 title claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 230000005540 biological transmission Effects 0.000 title abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000168254 Siro Species 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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Abstract
The utility model relates to a graphite grounding body connection device for transmission line shaft tower lightning grounding net, including public affairs continue, mother continues and the clamp, public affairs continue to continue to be equipped with respectively on the piece with mother and connect the face, are equipped with on this connection face to link up public affairs a continue length direction's the arc groove of piece or mother that continues to bottom in this arc groove one end sets up the U -shaped groove of lining up with the arc groove, and the messenger should hold to the open end, public affairs continue with a female connection face that continues on be equipped with the arch and the recess of looks adaptation respectively, both connect into the body that continues through protruding cooperation with the recess, make public continue with female piece that continues on the arc groove make up along the hole groove that the body length direction that continues link up, a hole notch is drawn forth for continuing the graphite grounding body of connection is introduced after bending perpendicularly from the open end and is followed the other end, the clamp joint is in open end one side of the body that continues to support the part of leaning on at the graphite grounding body of bending. The advantage breaks away from among the difficult connection device of follow of grounding body, connects just long service life of reliable, convenient construction.
Description
Technical field
The utility model relates to power system transmission line lightning protection equipment, particularly relates to a kind of graphite earth electrode connection device for transmission line tower grounding network.
Background technology
Transmission line tower grounding network is interconnected to form by the earth electrode of some grounds and underground, the earth electrode of underground is essentially horizontally embedded in underground and is interconnected and reticulates, and electric power line pole tower is connected with the earth electrode of underground by introducing underground in somewhere on shaft tower by ground earth electrode.This kind of transmission line tower grounding network is the important basic power equipment ensureing electric power transmission line ground wire effective lightning protection reliable ground.For many years, China's transmission line tower grounding network many employings steel, copper metal, galvanized steel, copper cover the earthing material of the coating alloy materials such as steel as electric power grounding grid.And metal material is in the life cycle of the even buried operation of decades that reaches the more than ten years, what be difficult to avoid is corroded, and what is more, just occurs partial corrosion at buried 5 years, within 8 years, afterwards heavy corrosion occurs to such an extent as to the phenomenon of fracture.Therefore, be currently suggested and replace metallic ground body with flexible graphite compound earthing material as novel grounded material, to solve metallic ground body etching problem.
If but with graphite as earth electrode, in ground network, the connection of each earth electrode will become problem, connect because graphite can not carry out mutual correspondence conveniently by traditional electric welding, gas welding and heat release weldering etc. as metallic ground body.And ground network each connected node tensile property and electrical contact performance are the key positions in impact whole ground network useful life, therefore, design makes the reliable connection device connected between two or more graphite earth electrode have important practical engineering application value.
Summary of the invention
The purpose of this utility model is to solve the deficiency of above-mentioned prior art and a kind of graphite earth electrode connection device for electric power line pole tower lightning protection grounding network of proposing, to be electrically connected connectivity problem between the graphite earth electrode solving transmission line tower grounding network, this problem is resolved by following technical proposals.
Described graphite earth electrode connection device, comprising: public access continues part, mother continues part and clip; Described public access continues part and mother and continues on part and be respectively equipped with joint face, and this joint face is provided with through public access and continues part or mother and to continue the arc groove of part length direction, and arranges the U-lag through with arc groove in the bottom of this arc groove one end, makes this end be openend; The joint face that public access continues part and female part that continues is respectively equipped with suitable projection and groove, both one to be continued body by protruding being connected into groove, make public access continue part and female arc groove continued on part is combined into along the through hole slot in body length direction of continuing, and public access continue the position that circumferential angle that part and female openend continued on part lay respectively at each one end of hole slot is 180 °; Need continue connect graphite earth electrode squeezed tight by hole slot, to be electrically connected, and one end is drawn from the aperture of hole slot one end, the other end after vertical bending from corresponding to the hole slot other end openend extraction; Described clip is connected to the openend side of the body that continues, and is resisted against the dogleg section of graphite earth electrode
Described public access continues the openend of part and corresponds to the continue openend side of part of the mother that coordinates with it and be respectively equipped with the first snap-ring groove and the second snap-ring groove; Described mother continue part openend and correspond to the openend side that the public access that combines with it continues part and be respectively equipped with the first snap-ring groove and the second snap-ring groove.
Described clip comprises two halves cranse and connector, described half cranse is the open type cranse corresponding with the low profile of groove of the first snap-ring groove or the second snap-ring groove, two halves cranse respectively symmetry is positioned in the first snap-ring groove and the second snap-ring groove, and by connector, the two is linked into an integrated entity, make two halves cranse form a closed type cranse, inlay card continues in the first=bis-snap-ring groove of external side described.
Described public access continues part, mother continues part, clip and connector adopt nylon or epoxy resin or fiberglass or polytetrafluoroethylene nonmetallic materials are made; Or adopt stainless steel material to make, or the steel of plating zinc on surface are adopted to make.
Described joint face is positioned at the both sides, groove top of arc groove, and described projection and groove are separately positioned on the both sides, groove top that public access continues the arc groove of part and female part that continues.
The one end of the groove that described mother continues on part joint face is closed, and the length of the projection that described public access continues on part joint face is not more than the length of the groove coordinated with it.
It is cuboid roughly or semi-cylindrical roughly that described public access continues part and female part that continues, and the size of length direction is not less than the graphite earth electrode diameter of 6 times, and the thickness at any place is more than or equal to 5mm.
The length that described graphite earth electrode is drawn from openend bending is not less than 5cm.
Described graphite earth electrode is the flexible material that after pressurized, shape can change arbitrarily, and during by External Force Acting, its end surface shape plasticity is strong, can change shape arbitrarily, thus realizes and the fitting tightly of the part groove that continues.
The beneficial effects of the utility model are:
1) the flexible graphite earth electrode connected for continued access to be contacted with each other by the hole slot be contained in the utility model splicing device and is electrically connected, being electrically connected to each other of many graphite earth electrodes can be realized, and one end draws (or introducing) connection device by the vertical bending of openend, and the exit of this bending is also subject to the clamping of clip, the ground graphite earth electrode of (or introducing) is drawn when being subject to pulling like this from openend, not easily the drag force be subject to is conducted to the electrical connections contacted with each other being positioned at hole slot, make the tensile strength of splicing device large, good anti-drop effect, connect reliable,
2) earth electrode that can meet different-diameter under various working connects, and can carry out the design of corresponding arc groove according to the earth electrode number held, and the demand adaptation that the graphite earth electrode making it to adapt to different radical connects is wide.
3) anticorrosion, ageing resistace are given prominence to, and can utilize by iterative cycles, energy-saving effect is remarkable.
3) easy to use, construction time without the need to be equipped with power supply, welding machine thus reduce construction cost.
4) simple for structure, preparation technology is simple, and can produce in batches by mold, production cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model connection device.
Fig. 2 be composition connection device public access continue part structural representation.
Fig. 3 is the upward view that public access shown in Fig. 2 continues part.
Fig. 4 be composition connection device mother continue part structural representation.
Fig. 5 is that mother shown in Fig. 4 continues the upward view of part.
Fig. 6 is yoke configurations schematic diagram.
Fig. 7 is that electric power line pole tower connection device of the present utility model carries out the connection diagram of lightning protection.
Embodiment
As Fig. 1, connection device of the present utility model continues part 11 primarily of public access, mother continues part 12 and clip 2 form.Continue on part 12 be respectively equipped with joint face 111,112 as Fig. 2 ~ 5 public access continues part 11 and mother, this two joint face is respectively equipped with through public access to continue part 11 or mother and to continue the arc groove 113 of part 12 length direction or arc groove 123, and at this arc groove 113(or arc groove 123) bottom end arranges and the through U-lag 114(of arc groove or U-lag 124), the i.e. arc groove 113(of this end or arc groove 123) bottom is by U-lag 114(or U-lag 124) through, make this end be openend.The joint face that public access continues part 11 and female part 12 that continues is respectively equipped with suitable projection 112 and groove 122, and public access continues part 11 and female part 12 that continues is coordinated with the grafting of groove 122 by this projection 112 and links into an integrated entity 1, as Fig. 5.Thus, two arc grooves 113,123 are combined into an edge and continue the through hole slot 13 in the long 1 degree of direction of body, simultaneously above-mentioned public access continues part 11 and female openend continued on part 12 lays respectively at hole slot 13(or the body 1 that continues) each one end, and differ 180 ° in circumferential direction, namely circumferential angle is the position of 180 °.
The utility model graphite earth electrode used is the flexible graphite earth electrode that after pressurized, shape can change arbitrarily, need be continued the flexible graphite earth electrode connected, part 11 is continued through public access and mother continues part 12 grafting to its extruding mutually in intimate contact by hole slot 13 as the graphite earth electrode 5 in Fig. 1 and graphite earth electrode 5 ', be electrically connected to make the two graphite earth electrodes 5,5 ' be contained in hole slot 13, one end of graphite earth electrode 5 is drawn from the aperture of hole slot one end A, and the other end is drawn from the U-lag 114 of openend corresponding to hole slot other end B after vertical bending.Same, graphite earth electrode 5 ' is drawn from the aperture of hole slot one end B, and the other end is drawn from the U-lag 114 of openend corresponding to hole slot other end B after vertical bending.5cm is greater than from the length of openend extension after vertical bending.
In order to ensure that the part that graphite earth electrode 5 to be introduced through openend or drawn be vertical bending state with the part in hole slot, clip 2 is connected to the openend side of the body 1 that continues, and with this openend closed, the dogleg section of graphite earth electrode 5 is pressed on clip 2.Like this, be in graphite earth electrode 5 outside connection device when the pulling be subject to not easily by the drag force be subject to through vertical bending and the part transmission be in hole slot, therefore connection device of the present utility model makes the graphite earth electrode continued not easily depart from, and has good pull resistance.
Continue part 11 and mother and continue on part 12 at the continue public access of body 1 of composition snap-ring groove is set respectively, clip 2 is rabbeted in snap-ring groove, the part 12 that can prevent that public access from continuing part 11, mother the continues relative movement mutually after grafting, the concrete setting of snap-ring groove is: continue the openend of part 11 at public access and correspond to the continue openend side of part of the mother coordinated with it and be respectively equipped with the first snap-ring groove 15 and the second snap-ring groove 16; Mother continue part openend and correspond to the openend side that the public access that combines with it continues part and be respectively equipped with the first snap-ring groove 15 and the second snap-ring groove 16.
As Fig. 6, clip 2 is made up of with the connector being connected this two halves cranse two symmetrical half cranses placed, and half cranse is corresponding with the bottom land profile of the first snap-ring groove or the second snap-ring groove.During use, two halves cranse is rabbeted respectively in first snap-ring groove or the second snap-ring groove of correspondence, then this two halves cranse connects by the connector be made up of bolt 21, nut 22, makes it to bind round to be connected on and continues on the outer circumferential side of body 1.
From the above, public access continues part 11 and female arc groove 113,123 continued on part 12 defines hole slot 13, joint face is located at the both sides, groove top of arc groove, make two arc grooves 113,123 by being positioned at the laminating of the joint face 111 and 121 on groove top, form hole slot completely closed in circumference, be contained in graphite earth electrode compressive deformation in hole slot and enrich in hole slot, hole slot is made to be subject to outwards supportting the active force risen, and closed hole slot can make this active force act on equably on connection device, make it stress good.
The projection 112 that public access continues on part joint face adopts dovetail slideway, groove 122 employing dovetail grooves that corresponding mother continues on part joint face, public access continues part 11 and female part 12 that continues is plugged in dovetail groove the compact siro spinning technology carrying out both by dovetail slideway, and this kind of connection is the syndeton being convenient to press to the graphite earth electrode in hole slot.In addition, the projection 112 that public access continues on part 11 also can be designed to T-shaped guide rail, and the groove that corresponding mother continues on part 12 is then designed to T-shaped groove, and the two carries out compact siro spinning technology by T-shaped guide rail and the mutual grafting of T-shaped groove.
Groove 122 one end that above-mentioned mother continues on part joint face 112 is closed, and namely groove 122 is non-penetrating groove, can see Fig. 4, and therefore groove 122 length is less than the corresponding length of joint face 122.Corresponding, the projection 112 that public access continues on part joint face 111 will match with (i.e. guide rail) above-mentioned groove 122, and its length is no longer than groove, and the length of therefore same projection 112 is less than the corresponding length of joint face 112.The grafting that this kind of design makes public access continue part and female part that continues has directivity, makes both by the mutual grafting in direction of setting, ensures that public access continues part 11 and female openend continued on part 12 lays respectively at each one end of hole slot 13, and differs 180 ° in circumferential direction.
Connect effect preferably to make connection device of the present utility model have, the size of its length direction is not less than the graphite earth electrode diameter of 6 times, and simultaneously have certain intensity in order to what ensure connection device, the thickness at any place is more than or equal to 5mm.Public access in the utility model connection device continues part 11 and female part 12 that continues can be made into cuboid as shown in the figure, and corresponding clip 2 is made into square clip, also can be made into semi-cylindrical, and now corresponding clip 2 should be made into circular clip.
Because connection device is embedded in underground for a long time, therefore for increasing corrosion resistance, improve useful life, the nylon that public access in the utility model connection device continues part 11, mother continues part 12, clip 2 and connector 3 adopts corrosion resistance stronger or epoxy resin or fiberglass or polytetrafluoroethylene nonmetallic materials make, also stainless steel material can be adopted, or the steel of plating zinc on surface make.
As Fig. 7, the utility model device is used for the connection of the earth electrode of electric power line pole tower lightning protection grounding network, on the steelframe of the tower root corner of electric power line pole tower, the downlead of lightning protection is made of graphite earth electrode 5, and be connected with buried ground network by connection device of the present utility model, and imbed underground ground network and be also made up of some graphite earth electrodes, such as earth electrode 5 ', 5 ", they are interconnected to ground network with downlead on correspondence position (graphite earth electrode 5) by connection device respectively.Like this, the connection forming lightning protection grounding network does not need welding machine and power supply, and easy construction cost is low.
Claims (10)
1. for the graphite earth electrode connection device of electric power line pole tower lightning protection grounding network, it is characterized in that: comprise that public access continues part, mother continues part and clip; Described public access continues part and mother and continues on part and be respectively equipped with joint face, and this joint face is provided with through public access and continues part or mother and to continue the arc groove of part length direction, and arranges the U-lag through with arc groove in the bottom of this arc groove one end, makes this end be openend; The joint face that public access continues part and female part that continues is respectively equipped with suitable projection and groove, both one to be continued body by protruding being connected into groove, make public access continue part and female arc groove continued on part is combined into along the through hole slot in body length direction of continuing, and public access continue the position that circumferential angle that part and female openend continued on part lay respectively at each one end of hole slot is 180 °; Need continue connect graphite earth electrode squeezed tight by hole slot, to be electrically connected, and one end is drawn from the aperture of hole slot one end, the other end after vertical bending from corresponding to the hole slot other end openend extraction; Described clip is connected to the openend side of the body that continues, and is resisted against the dogleg section of graphite earth electrode.
2. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, is characterized in that: described public access continues the openend of part and corresponds to the continue openend side of part of the mother that coordinates with it and be respectively equipped with the first snap-ring groove and the second snap-ring groove; Described mother continue part openend and correspond to the openend side that the public access that combines with it continues part and be respectively equipped with the first snap-ring groove and the second snap-ring groove.
3. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 2, it is characterized in that: described clip comprises two halves cranse and connector, described half cranse is the open type cranse corresponding with the low profile of groove of the first snap-ring groove or the second snap-ring groove, two halves cranse respectively symmetry is positioned in the first snap-ring groove and the second snap-ring groove, and by connector, the two is linked into an integrated entity, make two halves cranse form a closed type cranse, inlay card continues in first and second snap-ring groove of external side described.
4. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 3, is characterized in that: described public access continues part, mother continues part, clip and connector adopt nylon or epoxy resin or fiberglass or polytetrafluoroethylene nonmetallic materials are made; Or adopt stainless steel material to make, or the steel of plating zinc on surface are adopted to make.
5. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, it is characterized in that: described joint face is positioned at the both sides, groove top of arc groove, described projection and groove are separately positioned on the both sides, groove top that public access continues the arc groove of part and female part that continues.
6. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, it is characterized in that: the one end of the groove that described mother continues on part joint face is closed, the length of the projection that described public access continues on part joint face is not more than the length of the groove coordinated with it.
7. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, it is characterized in that: described projection is dovetail slideway or T-shaped guide rail, described groove is dovetail groove or T-shaped groove.
8. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, it is characterized in that: it is cuboid roughly or semi-cylindrical roughly that described public access continues part and female part that continues, the size of length direction is not less than the graphite earth electrode diameter of 6 times, and the thickness at any place is more than or equal to 5mm.
9. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network according to claim 1, is characterized in that: the length that described graphite earth electrode is drawn from openend bending is not less than 5cm.
10. the graphite earth electrode connection device for electric power line pole tower lightning protection grounding network of any one according to claim 1-9, is characterized in that: described graphite is the flexible material that after pressurized, shape can change arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520947962.8U CN205122789U (en) | 2015-11-24 | 2015-11-24 | A graphite grounding body connection device for transmission line shaft tower lightning grounding net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520947962.8U CN205122789U (en) | 2015-11-24 | 2015-11-24 | A graphite grounding body connection device for transmission line shaft tower lightning grounding net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205122789U true CN205122789U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520947962.8U Withdrawn - After Issue CN205122789U (en) | 2015-11-24 | 2015-11-24 | A graphite grounding body connection device for transmission line shaft tower lightning grounding net |
Country Status (1)
| Country | Link |
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| CN (1) | CN205122789U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281051A (en) * | 2015-11-24 | 2016-01-27 | 江苏省电力公司电力经济技术研究院 | Graphite grounding body connecting device for power transmission line tower grounding grid |
| CN108777374A (en) * | 2018-05-25 | 2018-11-09 | 空军研究院战略预警研究所 | A kind of soft graphite bonded earth electrode fast splicing device |
| CN110190414A (en) * | 2019-05-30 | 2019-08-30 | 安徽华希电力科技有限公司 | A kind of modified form thunder-preventing graphite grounding device and its construction method |
| CN111934103A (en) * | 2020-07-24 | 2020-11-13 | 武汉大盛源电力有限公司 | Lightning protection grounding body connecting device and connecting method thereof |
| CN112688094A (en) * | 2020-12-31 | 2021-04-20 | 国网河南省电力公司南阳供电公司 | Anti-corrosion down lead structure for lightning protection grounding system |
-
2015
- 2015-11-24 CN CN201520947962.8U patent/CN205122789U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281051A (en) * | 2015-11-24 | 2016-01-27 | 江苏省电力公司电力经济技术研究院 | Graphite grounding body connecting device for power transmission line tower grounding grid |
| CN108777374A (en) * | 2018-05-25 | 2018-11-09 | 空军研究院战略预警研究所 | A kind of soft graphite bonded earth electrode fast splicing device |
| CN110190414A (en) * | 2019-05-30 | 2019-08-30 | 安徽华希电力科技有限公司 | A kind of modified form thunder-preventing graphite grounding device and its construction method |
| CN111934103A (en) * | 2020-07-24 | 2020-11-13 | 武汉大盛源电力有限公司 | Lightning protection grounding body connecting device and connecting method thereof |
| CN111934103B (en) * | 2020-07-24 | 2021-09-28 | 武汉大盛源电力有限公司 | Lightning protection grounding body connecting device and connecting method thereof |
| CN112688094A (en) * | 2020-12-31 | 2021-04-20 | 国网河南省电力公司南阳供电公司 | Anti-corrosion down lead structure for lightning protection grounding system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20180706 |
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| AV01 | Patent right actively abandoned |