CN112018528B - Wedge-shaped lightning protection down lead connection device and use method thereof - Google Patents
Wedge-shaped lightning protection down lead connection device and use method thereof Download PDFInfo
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- CN112018528B CN112018528B CN202010871130.8A CN202010871130A CN112018528B CN 112018528 B CN112018528 B CN 112018528B CN 202010871130 A CN202010871130 A CN 202010871130A CN 112018528 B CN112018528 B CN 112018528B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 73
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 72
- 239000010439 graphite Substances 0.000 claims abstract description 72
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000005452 bending Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 46
- 229910052725 zinc Inorganic materials 0.000 claims description 46
- 239000011701 zinc Substances 0.000 claims description 46
- 239000011229 interlayer Substances 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 19
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- 239000004020 conductor Substances 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 13
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- 230000000903 blocking effect Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- 230000002512 anti-withdrawal effect Effects 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
- H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a wedge-shaped lightning protection down lead connection device and a use method thereof, wherein the wedge-shaped lightning protection down lead connection device comprises a joint connected with a transmission tower, a graphite belt connected with a grounding grid and a wedge-shaped conductive sleeve connecting the joint and the graphite belt; the outer wall of the wedge-shaped conductive sleeve is provided with a round pipe for inserting galvanized round steel, one end, far away from the wedge-shaped conductive sleeve, of the galvanized round steel is connected with the joint, the small-diameter end of the wedge-shaped conductive sleeve is used for penetrating one end, far away from the grounding grid, of the graphite belt, and the end of the graphite belt penetrates out of the small-diameter end of the wedge-shaped conductive sleeve again, so that a bending section is formed on the graphite belt in the wedge-shaped conductive sleeve, a wedge-shaped clamping plate is arranged in the bending section of the graphite belt, and a heat shrink pipe for sealing the wedge-shaped conductive sleeve is further sleeved outside the wedge-shaped conductive sleeve.
Description
Technical Field
The invention relates to the technical field of grounding lightning protection of an electric power system, in particular to a wedge-shaped lightning protection down lead connecting device and a using method thereof.
Background
The grounding device in the power system is vital and comprises a grounding down conductor and a grounding main network, wherein one end of the grounding down conductor is connected with the main network buried underground, and the other end of the grounding down conductor is connected with an above-ground transmission tower. Therefore, the lightning protection process of the grounding grid is the process of discharging lightning charges, and the conduction performance of the grounding grid directly influences the lightning protection effect.
In recent years, lightning trip accidents of power transmission lines are more and more frequent, and part of reasons are found through inspection that the corrosion of a grounding device causes the reduction of the conduction performance of a grounding grid and the unqualified grounding resistance, a metal grounding body is buried underground for a long time to cause the corrosion of the grounding body, and the single metal grounding grid cannot run stably for a long time, so that the safe and long-term corrosion-resistant grounding grid which is jointly constructed by a graphite grounding material and a metal down lead appears in the market.
In order to solve the problems, the invention provides a wedge-shaped multi-protection-layer round steel composite down lead which is characterized in that a metal down lead and a graphite down lead are combined in a sealing mode, oxygen and moisture are prevented from entering, the two ends of the down lead are connected with the same material, a channel for galvanic corrosion of the graphite material and the metal material is blocked, and the purpose of preventing the metal down lead from being corroded is achieved.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a wedge-shaped lightning protection down lead connection device and a use method thereof, aiming at solving the problem of serious corrosion of a metal down lead by hermetically combining the metal down lead and a graphite grounding material.
In order to achieve the purpose, the invention adopts the specific scheme that: a wedge-shaped lightning protection down lead connection device comprises a joint connected with a transmission tower, a graphite belt connected with a grounding grid and a wedge-shaped conductive sleeve connecting the joint and the graphite belt;
wedge conductive sleeve's outer wall is equipped with and supplies zinc-plated round steel male pipe, zinc-plated round steel is kept away from wedge conductive sleeve's one end and is articulate, wedge conductive sleeve's path end supplies the graphite tape to keep away from the one end of ground net and penetrates, and this end of graphite tape is worn out from wedge conductive sleeve's path end once more, form the section of bending on the intraductal graphite tape of wedge conductive sleeve, be equipped with in the section of bending of graphite tape and be used for the graphite tape chucking in order to avoid the graphite tape to follow the wedge cardboard of wedge conductive sleeve pipe path end roll-off, wedge conductive sleeve's outside still overlaps and is equipped with the pyrocondensation pipe sealed with wedge conductive sleeve.
As a further optimization of the above technical solution: and a backstop zinc block for preventing the graphite belt from loosening and sliding out of the large-diameter end of the wedge-shaped conductive sleeve is arranged at the large-diameter end in the wedge-shaped conductive sleeve.
As a further optimization of the above technical solution: the wedge-shaped conductive sleeve is internally provided with a partition board which is distributed along the length direction of the wedge-shaped conductive sleeve, the partition board divides the interior of the wedge-shaped conductive sleeve into a mounting cavity and an interlayer cavity, a graphite belt and a wedge-shaped clamping plate are arranged in the mounting cavity, a backstop zinc block is arranged in the interlayer cavity, a transmission assembly connected with the backstop zinc block is further arranged in the interlayer cavity, and the transmission assembly is used for controlling the backstop zinc block to automatically stretch into the mounting cavity from the interlayer cavity through a perforation arranged on the partition board after the wedge-shaped clamping plate is mounted on the wedge-shaped conductive sleeve.
As a further optimization of the above technical solution: the transmission assembly comprises a driven rack longitudinally arranged along the wedge-shaped conductive sleeve and a driving rack transversely arranged along the wedge-shaped conductive sleeve; the end part of the driven rack corresponding to the large-diameter end of the wedge-shaped conductive sleeve is meshed with a second gear, the second gear is fixed on a second rotating shaft which is rotatably arranged in the interlayer cavity, and a first connecting rod connected with the backstop zinc block is arranged on the second rotating shaft; the end part of the driven rack corresponding to the small-diameter end of the wedge-shaped conductive sleeve is meshed with a first gear, and the first gear is fixed on a first rotating shaft which is rotatably arranged in the interlayer cavity; one end of the driving rack is a tooth end and is meshed and connected with the first gear, the other end of the driving rack is a rod end and is provided with an inclined surface, the rod end of the driving rack penetrates through a sliding hole formed in the partition plate and then extends into the installation cavity, and a wedge-shaped bump matched with the inclined surface of the rod end of the driving rack to push the driving rack to move transversely along the wedge-shaped conductive sleeve is arranged on one side of the wedge-shaped clamping plate, which faces the partition plate.
As a further optimization of the above technical solution: and a fixed pipe is arranged in the interlayer cavity, the driven rack is arranged in the fixed pipe in a penetrating manner, and the fixed pipe is connected with the inner wall of the wedge-shaped conductive sleeve through a second connecting rod.
As a further optimization of the above technical solution: the transmission assembly comprises a sliding block arranged on the backstop zinc block and an L-shaped stop lever longitudinally arranged along the wedge-shaped conductive sleeve; the non-return zinc block is matched in a sliding rail which is arranged on the inner wall of the wedge-shaped conductive sleeve and is transversely distributed along the wedge-shaped conductive sleeve in a sliding mode through a sliding block, a compression spring is further connected to the non-return zinc block, and one end, far away from the non-return zinc block, of the compression spring is connected to the side wall of the wedge-shaped conductive sleeve; the long limit of L shape shelves pole slides and sets up in the recess of seting up on the baffle, the one end and the perforation intercommunication of recess, the rectangular hole intercommunication of seting up on the other end and the baffle, the rectangular hole supplies the minor face of L shape shelves pole to stretch into the installation intracavity, the long limit of L shape shelves pole can stretch into to the perforation by the recess in order to block stopping the zinc bloom and keep compression spring's the state of holding power, one side towards the baffle on the wedge-shaped cardboard be equipped with the minor face cooperation of L shape shelves pole in order to promote L shape shelves pole longitudinal movement make the stopping zinc bloom through compression spring by the interlayer intracavity launch to the installation intracavity.
The use method of the connecting device comprises the following steps:
1) performing anticorrosion process treatment, namely after one end of the galvanized round steel is welded with the joint, inserting the other end of the galvanized round steel into the round pipe of the wedge-shaped conductive sleeve and firmly welding, and then uniformly painting anticorrosion paint on the wedge-shaped conductive sleeve, the galvanized round steel and the round pipe;
2) mounting, namely penetrating a graphite belt through the wedge-shaped conductive sleeve, bending the graphite belt positioned outside the major-diameter end of the wedge-shaped conductive sleeve to form a bending section, putting the wedge-shaped clamping plate into the bending section of the graphite belt, dragging the graphite belt at the minor-diameter end of the wedge-shaped conductive sleeve, and completely bringing the graphite belt at the major-diameter end of the wedge-shaped conductive sleeve and the wedge-shaped clamping plate into the wedge-shaped conductive sleeve;
3) sealing, namely sleeving a heat-shrinkable tube with high-temperature-resistant sealant at two ends on a wedge-shaped conductive sleeve and carrying out heat-shrinkable process treatment, then adhering the end part of the heat-shrinkable tube and the end part of the wedge-shaped conductive sleeve together by using the high-temperature-resistant sealant and carrying out sealing treatment, then connecting a graphite tape at the small-diameter end of the wedge-shaped conductive sleeve with a grounding grid, and connecting a joint with a transmission tower.
Compared with the prior art, the invention has the following beneficial effects:
1) the splicing device is connected with a tower leg grounding wire of a transmission tower through the galvanized round steel and the joint, the graphite belt is connected with a main network buried underground, the graphite belt and the galvanized round steel are connected through the wedge-shaped conductive sleeve, the wedge-shaped conductive sleeve can firmly fix the graphite belt and hermetically combine the down leads of two materials, oxygen and moisture are prevented from entering, the two ends of the down lead are connected with the same material, the graphite belt is connected with the grounding main network, the metallic galvanized round steel is connected with the metal grounding wire of the transmission tower, so that a passage for galvanic corrosion of a graphite material and a metal material court is blocked, the contact resistance is small, and the purpose of preventing the end of the down lead from being corroded is achieved;
2) the anti-corrosion paint is adhered to the metal surface of the joint of the wedge-shaped conductive sleeve, the heat-shrinkable tube is wrapped to isolate air moisture from the outside, and the wedge-shaped conductive sleeve is anti-corrosion, anti-aging and high-temperature resistant and has long service life.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of a sandwich cavity inner transmission assembly according to embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view from a top perspective prior to installation of example 1 of the present invention;
FIG. 4 is a schematic view of a separator according to example 1 of the present invention;
FIG. 5 is a cross-sectional view from a top perspective after installation of example 1 of the present invention;
FIG. 6 is a cross-sectional view from a top perspective prior to installation of example 2 of the present invention;
FIG. 7 is a cross-sectional view from a top perspective after installation in accordance with example 2 of the present invention;
FIG. 8 is a schematic view of a separator according to example 2 of the present invention;
FIG. 9 is a schematic view of the relationship between the anti-backup zinc block and the bottom wall of the wedge-shaped conductive sleeve in example 2 of the present invention;
the labels in the figure are: 1. graphite tape, 2, high temperature resistant sealed glue, 3, pyrocondensation pipe, 4, wedge-shaped conductive sleeve, 401, path end, 402, big footpath end, 403, the installation cavity, 404, the intermediate layer chamber, 5, the wedge cardboard, 501, wedge lug, 6, the pipe, 7, stopping zinc piece, 701, the slider, 8, zinc-plated round steel, 9, the joint, 10, first pivot, 11, the baffle, 12, L shape pin, 13, the second pivot, 14, the head rod, 15, the initiative rack, 16, first gear, 17, driven rack, 18, fixed pipe, 19, the second connecting rod, 20, the second gear, 21, the slide opening, 22, the perforation, 23, compression spring, 24, the recess, 25, the slide rail, 26, the rectangular hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to the attached drawings, a wedge-shaped lightning protection downlead connection device is characterized in that a metal downlead of a tower leg of a transmission tower is connected and hermetically combined with a graphite belt 1 embedded into an underground main network, the connection device comprises a connector 9 connected with the metal downlead of the tower leg of the transmission tower, the graphite belt 1 connected with a grounding network or other resistance products embedded into the ground, and a wedge-shaped conductive sleeve 4 connecting and connecting the connector 9 and the graphite belt 1, one end of the wedge-shaped conductive sleeve 4 is a large-diameter end 402 for a wedge-shaped clamping plate 5 to enter, the other end of the wedge-shaped conductive sleeve 4 is a small-diameter end 401 for the graphite belt 1 to penetrate out or penetrate into, a round pipe 6 for a galvanized steel 8 to enter is welded on the wedge-shaped conductive sleeve 4, one end of the galvanized steel 8 far away from the large-diameter end 402 of the wedge-shaped conductive sleeve 4 is connected with the connector 9, the other end of the galvanized steel 8 is inserted into the round pipe 6, and then the metal downlead is connected with the transmission tower by the connector 9 and connected with the wedge-shaped conductive sleeve 6 through the galvanized round steel 8, one end that ground major network was kept away from to graphite tape 1 wears into from path end 401, and wear out path end 401 once more after forming the section of bending in wedge conductive sleeve 4, the graphite downlead has been formed, and the shape of batching U-shaped, and be provided with wedge cardboard 5 in the section of bending in order to with graphite tape 1 chucking, wedge conductive sleeve 4's outside still overlaps and is equipped with pyrocondensation pipe 3, pyrocondensation pipe 3's both ends and wedge conductive sleeve 4 are through sealed processing of high temperature resistant sealed glue 2, it is sealed that the pyrocondensation pipe 3 that lies in wedge conductive sleeve 4 path end 401 also will stretch out wedge conductive sleeve 4's partial graphite tape 1 parcel promptly.
The opening of the large-diameter end 402 of the wedge-shaped conductive sleeve 4 is provided with the retaining zinc block 7, the retaining zinc block 7 can be used as a cathode to protect a metal down lead, the retaining zinc block 7 can prevent the graphite belt 1 from loosening and sliding out of the large-diameter end 402 of the wedge-shaped conductive sleeve 4, and it is noted that the outer diameter of the wedge-shaped clamping plate 5 needs to be smaller than the large-diameter end 402 of the wedge-shaped conductive sleeve 4 and larger than the small-diameter end 401 of the wedge-shaped conductive sleeve 4, i.e., at installation, the wedge-shaped card 5 needs to enter from the large diameter end 402 of the wedge-shaped conductive sleeve 4, and is clamped inside the wedge-shaped conductive sleeve 4, so that when the graphite tape 1 and the wedge-shaped clamping plate 5 are placed inside the wedge-shaped conductive sleeve 4, due to the existence of the anti-backing zinc block 7 at the large-diameter end 402 of the wedge-shaped conductive sleeve 4, the anti-backing zinc block 7 has certain influence on the graphite belt 1 and the wedge-shaped clamping plate 5, such as blocking of the graphite belt 1 and the wedge-shaped clamping plate 5 or scratching of the graphite belt 1.
Therefore, the partition plates 11 which are vertically distributed along the length direction of the wedge-shaped conductive sleeve 4 are arranged in the wedge-shaped conductive sleeve 4, the partition plates 11 divide the interior of the wedge-shaped conductive sleeve 4 into a mounting cavity 403 and an interlayer cavity 403, the graphite belt 1 and the wedge-shaped clamping plate 5 are arranged in the mounting cavity 403, the anti-back zinc block 7 is arranged in the interlayer cavity 404, a transmission component connected with the anti-backing zinc block 7 is also arranged in the interlayer cavity 404, the transmission component is used for controlling the anti-backing zinc block 7 to automatically extend into the installation cavity 403 from the interlayer cavity 404 through the through hole 22 formed on the partition plate 11 after the wedge-shaped clamping plate 5 is installed in the wedge-shaped conductive sleeve 4, thereby avoiding the influence of the retaining zinc block 7 on the graphite belt 1 and the wedge-shaped clamping plate 5, and after the graphite belt 1 and the wedge-shaped clamping plate 5 are installed, the anti-backing zinc block 7 is in place, so that the graphite belt 1 and the wedge-shaped clamping plate are prevented from sliding out of the large-diameter end 402 of the wedge-shaped conductive sleeve 4 and can be used as cathode protection.
The transmission assembly comprises a driven rack 17 and a driving rack 15, wherein the driven rack 17 is longitudinally arranged along the wedge-shaped conductive sleeve 4, the driving rack 15 is arranged at a position close to the small-diameter end 401 of the wedge-shaped conductive sleeve 4 and transversely arranged along the wedge-shaped conductive sleeve 4, the end part, corresponding to the large-diameter end 402 of the wedge-shaped conductive sleeve 4, of the driven rack 17 is meshed and connected with a second gear 20, the second gear 20 is fixed on a second rotating shaft 13 rotatably arranged in the interlayer cavity 404, and a first connecting rod 14 connected with the anti-withdrawal zinc block 7 is arranged on the second rotating shaft 13; the driven rack 17 is meshed with the first gear 16 corresponding to the end part of the small diameter end 401 of the wedge-shaped conductive sleeve 4, the first gear 16 is fixed on the first rotating shaft 10 rotatably arranged in the interlayer cavity 404, one end of the driving rack 15 is a gear end and meshed with the first gear 16, the other end of the driving rack 15 is a rod end and is provided with an inclined surface, the rod end of the driving rack 15 penetrates through the sliding hole 21 formed in the partition plate 11 and then extends into the installation cavity 403, one side of the wedge-shaped clamping plate 5 facing the partition plate 11 is provided with a wedge-shaped lug 501 matched with the inclined surface of the rod end of the driving rack 15 to push the driving rack 15 to transversely move along the wedge-shaped conductive sleeve 4, the driving rack 15 and the driven rack 17 are vertically distributed in the directions, the driven rack 17 is fixedly arranged in the fixed pipe 18 in a penetrating mode, and the fixed pipe 18 is connected with the inner wall of the wedge-shaped conductive sleeve 4 through the second connecting rod 19.
When the wedge-shaped clamping plate 5 is installed in the wedge-shaped conductive sleeve 4, the wedge-shaped convex block 501 on the wedge-shaped clamping plate 5 is matched with the side wall of the rod end of the driving rack 15, so that in the process of installing the wedge-shaped clamping plate 5 in the wedge-shaped conductive sleeve 4, the wedge-shaped convex block 501 pushes the rod end of the driving rack 15 to enable the driving rack 15 to move a small distance into the interlayer cavity 12, the installation position of the driving rack 15 needs to be as close to the small-diameter end 401 of the wedge-shaped conductive sleeve 4 as possible, when the wedge-shaped convex block 501 pushes the rod end of the driving rack 15 to enable the non-return zinc block 7 to move to the installation cavity 403, the wedge-shaped clamping plate 5 is ensured to completely enter the wedge-shaped conductive sleeve 4, in order to avoid the mutual interference between the driving rack 15 and the driven rack 17 and influence the working condition, the sizes of the first gear 16 and the second gear 20 are set to be different, namely the strokes are different, or a hole for the driven rack 17 to pass through is formed on the driving rack 15, therefore, the driving rack 15 and the driven rack 17 are prevented from interfering with each other on the first gear 16, and the driven rack 17 and the first connecting rod 14 are prevented from interfering with each other, the first connecting rod 14 can be arranged to be in a special-shaped structure and connected to one side of the second rotating shaft 13 far away from the driven rack 17, or a hole for the driven rack 17 to pass through is formed in the first connecting rod 14, so that the driven rack 17 and the first connecting rod 14 are prevented from interfering with each other, the wedge-shaped projection 501 needs to be arranged wide along the length direction of the wedge-shaped clamping plate 5, on one hand, the wedge-shaped projection 501 can be pressed against the partition plate 11 when the wedge-shaped clamping plate 5 enters the installation cavity 403, on the other hand, the other side of the wedge-shaped clamping plate 5 is pressed against the inner wall of the wedge-shaped conductive sleeve 4, so as to limit the wedge-shaped clamping plate 5 and prevent the wedge-shaped clamping plate 5 from easily moving, on the other hand, when the wedge-shaped clamping plate 5 and the graphite belt 1 slide towards the large-diameter end 402 of the wedge-shaped conductive sleeve 4, the length of the wedge-shaped projection 501 is sufficient to always press the rod end of the driving rack 15, so that the anti-backup zinc block 7 is fixed and will not be pushed back to the interlayer cavity 404 by the force applied to the anti-backup zinc block 7, and it should be noted that the through hole 22 in this embodiment has a T-shaped structure, that is, the anti-backup zinc block 7 and the first connecting rod 14 move from the interlayer cavity 404 to the installation cavity 403.
The working flow of the transmission assembly in the embodiment is as follows: when the wedge-shaped clamping plate 5 enters the wedge-shaped conductive sleeve 4, the wedge-shaped bump 501 on the wedge-shaped clamping plate 5 touches the rod end of the driving rack 15, and due to the effect of the inclined plane, the driving rack 15 is pushed towards the interlayer cavity 404, the driving rack 15 drives the first gear 16 to rotate, so that the first gear 16 drives the driven rack 17 to move, the driven rack 17 moves and then drives the second gear 20 to rotate, the second gear 20 drives the second rotating shaft 13 to rotate, so that the non-return zinc block 7 connected to the second rotating shaft 13 through the first connecting rod 14 is rotated out of the interlayer cavity 12 through the through hole 22, finally after the wedge-shaped clamping plate 5 is completely installed in the wedge-shaped conductive sleeve 4, the non-return zinc block 7 completely moves out of the interlayer cavity 404 to reach the installation cavity 403, and blocks the large-diameter end 402 of the wedge-shaped conductive sleeve 4.
Example 2
This embodiment is another embodiment of the transmission assembly of example 1, namely, the anti-backing zinc block 7 is moved from the interlayer cavity 404 to the installation cavity 403 after the wedge-shaped clamping plate 5 is installed in the wedge-shaped conductive sleeve 4.
The transmission assembly comprises a sliding block 701 arranged on a backstop zinc block 7 and an L-shaped stop lever 12 arranged along the longitudinal direction of a wedge-shaped conductive sleeve 4, the backstop zinc block 7 is matched in a sliding way 25 which is arranged on the inner wall of the wedge-shaped conductive sleeve 4 and is distributed along the transverse direction of the wedge-shaped conductive sleeve 4 through the sliding block 701, a compression spring 23 is further connected on the backstop zinc block 7, one end of the compression spring 23 far away from the backstop zinc block 7 is connected on the side wall of the wedge-shaped conductive sleeve 4 and is in a compression state when the backstop zinc block 7 is positioned in a sandwich cavity 404, the long edge of the L-shaped stop lever 12 is arranged in a groove 24 formed in a partition plate 11 in a sliding way, one end of the groove 24 is communicated with a through hole 22, the other end of the groove 24 is communicated with a long strip hole 26 formed in the partition plate 11, and further, when the L-shaped stop lever 12 moves along the groove 24, the short edge end can move into the long strip hole 26 can be used for the short edge of the L-shaped stop lever 12 to extend into a mounting cavity 403, the long edge of the L-shaped stop lever 12 can extend into the through hole 22 from the groove 24 to stop the anti-withdrawal zinc block 7 and keep the power accumulation state of the compression spring 23, and one side of the wedge-shaped clamping plate 5 facing the partition plate 11 is provided with a short edge which is matched with the short edge of the L-shaped stop lever 12 to push the L-shaped stop lever 12 to move longitudinally so that the anti-withdrawal zinc block 7 is ejected from the interlayer cavity 404 into the installation cavity 403 through the compression spring 23.
The working flow of the transmission assembly in the embodiment is as follows: when the wedge-shaped clamping plate 5 enters the wedge-shaped conductive sleeve 4, the wedge-shaped bump 501 on the wedge-shaped clamping plate 5 touches the short side of the L-shaped blocking rod 12 and pushes the L-shaped blocking rod 12 to move towards the direction of the small-diameter end 401 of the wedge-shaped conductive sleeve 4, the long side of the L-shaped blocking rod 12 is located in the through hole 22 and blocks one end of the backstop zinc block 7 from leaving the through hole 22, so that the backstop zinc block 7 moves from the interlayer cavity 404 to the installation cavity 403 along the slide rail 25 through the through hole 22 and pushes the driving rack 15 towards the direction of the interlayer cavity 404, and finally after the wedge-shaped clamping plate 5 is completely installed in the wedge-shaped conductive sleeve 4, the backstop zinc block 7 completely moves out of the interlayer cavity 404 to the installation cavity 403 and blocks the large-diameter end 402 of the wedge-shaped conductive sleeve 4.
The use method of the connecting device comprises the following steps:
1) after one end of the galvanized round steel 8 is welded with the joint 9, the other end of the galvanized round steel 8 is inserted into the round pipe 6 of the wedge-shaped conductive sleeve 4 and is firmly welded, and then the wedge-shaped conductive sleeve 4, the galvanized round steel 8 and the round pipe 6 are uniformly coated with the novel graphene-based anticorrosive paint, so that uniform spraying is achieved, and the adhesive force of the anticorrosive paint is ensured;
2) mounting, namely firstly enabling the graphite tape 1 to penetrate through a mounting cavity 24 of the wedge-shaped conductive sleeve 4, then rolling the graphite tape 1 at the large-diameter end 402 into a U-shaped bending section, enabling the graphite tape to be in a U-shaped state, then placing the wedge-shaped clamping plate 5 into the U-shaped cavity of the graphite tape 1, namely the bending section, wherein the placing directions of the small end and the large end of the wedge-shaped clamping plate 5 are consistent with the placing direction of the wedge-shaped conductive sleeve 4, then dragging the graphite tape 1 coming out of the small-diameter end 401, and completely bringing the graphite tape 1 and the wedge-shaped clamping plate 5 which are bent into the U-shape at the large-diameter end 402 into the wedge-shaped conductive sleeve 4;
3) sealing, 3 covers the pyrocondensation pipe 3 that have sealed glue 2 of high temperature resistant at both ends on wedge conductive casing 4 and carries out pyrocondensation technology and handle, later paste the tip of pyrocondensation pipe 3 and the tip of wedge conductive casing 4 together sealed with sealed glue 2 of high temperature resistant, graphite tape 1 that is equal to 4 minor diameter ends 401 of wedge conductive casing this moment wears out wedge conductive casing 4 and pyrocondensation pipe 3 in proper order, then with the one end of graphite tape 1 here ground connection major network or other resistance products under the ground, connect 9 and transmission tower's downlead and be connected.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The utility model provides a wedge lightning protection downlead continuation device which characterized in that: the device comprises a joint (9) connected with a transmission tower, a graphite belt (1) connected with a grounding grid and a wedge-shaped conductive sleeve (4) connecting the joint (9) and the graphite belt (1);
the outer wall of the wedge-shaped conductive sleeve (4) is provided with a round pipe (6) for inserting galvanized round steel (8), one end, far away from the wedge-shaped conductive sleeve (4), of the galvanized round steel (8) is connected with a connector (9), a small-diameter end (401) of the wedge-shaped conductive sleeve (4) is used for enabling one end, far away from a grounding net, of the graphite tape (1) to penetrate in, the end of the graphite tape (1) penetrates out of the small-diameter end (401) of the wedge-shaped conductive sleeve (4) again, so that a bending section is formed on the graphite tape (1) in the wedge-shaped conductive sleeve (4), a wedge-shaped clamping plate (5) used for clamping the graphite tape (1) to prevent the graphite tape (1) from sliding out of the small-diameter end (401) of the wedge-shaped conductive sleeve (4) is arranged in the bending section of the graphite tape (1), and a heat-shrinkable pipe (3) for sealing the wedge-shaped conductive sleeve (4) is further arranged outside the wedge-shaped conductive sleeve (4);
a backstop zinc block (7) for preventing the graphite belt (1) from sliding out of the large-diameter end (402) of the wedge-shaped conductive sleeve (4) in a loose manner is arranged at the large-diameter end (402) in the wedge-shaped conductive sleeve (4);
the wedge-shaped conductive sleeve is characterized in that partition plates (11) distributed along the length direction of the wedge-shaped conductive sleeve (4) are arranged in the wedge-shaped conductive sleeve (4), the partition plates (11) divide the interior of the wedge-shaped conductive sleeve (4) into a mounting cavity (403) and an interlayer cavity (404), a graphite belt (1) and a wedge-shaped clamping plate (5) are arranged in the mounting cavity (403), a backstop zinc block (7) is arranged in the interlayer cavity (404), a transmission assembly connected with the backstop zinc block (7) is further arranged in the interlayer cavity (404), and the transmission assembly is used for controlling the backstop zinc block (7) to automatically stretch into the mounting cavity (403) from the interlayer cavity (404) through holes (22) formed in the partition plates (11) after the wedge-shaped clamping plate (5) is mounted to the wedge-shaped conductive sleeve (4);
the transmission assembly comprises a driven rack (17) arranged along the longitudinal direction of the wedge-shaped conductive sleeve (4) and a driving rack (15) arranged along the transverse direction of the wedge-shaped conductive sleeve (4); the end part of the driven rack (17) corresponding to the large-diameter end (402) of the wedge-shaped conductive sleeve (4) is meshed with a second gear (20), the second gear (20) is fixed on a second rotating shaft (13) rotatably arranged in the interlayer cavity (404), and a first connecting rod (14) connected with the backstop zinc block (7) is arranged on the second rotating shaft (13); the end part of the driven rack (17) corresponding to the small-diameter end (401) of the wedge-shaped conductive sleeve (4) is meshed with a first gear (16), and the first gear (16) is fixed on a first rotating shaft (10) rotatably arranged in the interlayer cavity (404); one end of the driving rack (15) is a tooth end and is meshed and connected with the first gear (16), the other end of the driving rack (15) is a rod end and is provided with an inclined surface, the rod end of the driving rack (15) penetrates through a sliding hole (21) formed in the partition plate (11) and then extends into the installation cavity (403), and a wedge-shaped bump (501) matched with the inclined surface of the rod end of the driving rack (15) to push the driving rack (15) to move transversely along the wedge-shaped conductive sleeve (4) is arranged on one side, facing the partition plate (11), of the wedge-shaped clamping plate (5).
2. The wedge-shaped lightning protection down conductor splicing device according to claim 1, wherein: and a fixed pipe (18) is arranged in the interlayer cavity (404), the driven rack (17) is arranged in the fixed pipe (18) in a penetrating manner, and the fixed pipe (18) is connected with the inner wall of the wedge-shaped conductive sleeve (4) through a second connecting rod (19).
3. Method for using a splicing device according to claim 1 or 2, characterized in that: the method comprises the following steps:
1) performing anticorrosion process treatment, namely welding one end of the galvanized round steel (8) with the joint (9), inserting the other end of the galvanized round steel (8) into the round pipe (6) of the wedge-shaped conductive sleeve (4), firmly welding, and then uniformly coating anticorrosion paint on the wedge-shaped conductive sleeve (4), the galvanized round steel (8) and the round pipe (6);
2) mounting, namely firstly enabling the graphite tape (1) to penetrate through a mounting cavity (403) of the wedge-shaped conductive sleeve (4), bending the graphite tape (1) positioned outside the large-diameter end (402) of the wedge-shaped conductive sleeve (4) to form a bending section, then placing the wedge-shaped clamping plate (5) into the bending section of the graphite tape (1), dragging the graphite tape (1) at the small-diameter end (401) of the wedge-shaped conductive sleeve (4), and completely bringing the graphite tape (1) and the wedge-shaped clamping plate (5) at the large-diameter end (402) of the wedge-shaped conductive sleeve (4) into the wedge-shaped conductive sleeve (4);
3) sealing, namely sleeving a heat shrinkable tube (3) with high-temperature-resistant sealant (2) at two ends on a wedge-shaped conductive sleeve (4) and performing heat shrinkage process treatment, then adhering the end part of the heat shrinkable tube (3) and the end part of the wedge-shaped conductive sleeve (4) together by using the high-temperature-resistant sealant (2) and performing sealing treatment, then connecting a graphite tape (1) at the small-diameter end (401) of the wedge-shaped conductive sleeve (4) with a grounding grid, and connecting a joint (9) with a transmission tower.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871130.8A CN112018528B (en) | 2020-08-26 | 2020-08-26 | Wedge-shaped lightning protection down lead connection device and use method thereof |
| CN202110730817.4A CN113437541B (en) | 2020-08-26 | 2020-08-26 | Sliding block type wedge-shaped lightning protection downlead splicing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871130.8A CN112018528B (en) | 2020-08-26 | 2020-08-26 | Wedge-shaped lightning protection down lead connection device and use method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110730817.4A Division CN113437541B (en) | 2020-08-26 | 2020-08-26 | Sliding block type wedge-shaped lightning protection downlead splicing apparatus |
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| Publication Number | Publication Date |
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| CN112018528A CN112018528A (en) | 2020-12-01 |
| CN112018528B true CN112018528B (en) | 2021-12-21 |
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| CN202110730817.4A Active CN113437541B (en) | 2020-08-26 | 2020-08-26 | Sliding block type wedge-shaped lightning protection downlead splicing apparatus |
| CN202010871130.8A Active CN112018528B (en) | 2020-08-26 | 2020-08-26 | Wedge-shaped lightning protection down lead connection device and use method thereof |
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| CN202110730817.4A Active CN113437541B (en) | 2020-08-26 | 2020-08-26 | Sliding block type wedge-shaped lightning protection downlead splicing apparatus |
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| CN113346260A (en) * | 2021-04-23 | 2021-09-03 | 国网浙江省电力有限公司湖州供电公司 | Broken grounding body repairing structure and repairing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113437541A (en) | 2021-09-24 |
| CN112018528A (en) | 2020-12-01 |
| CN113437541B (en) | 2023-03-14 |
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