CN215645060U - Bolt type connection ground screen structure - Google Patents
Bolt type connection ground screen structure Download PDFInfo
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- CN215645060U CN215645060U CN202122246914.4U CN202122246914U CN215645060U CN 215645060 U CN215645060 U CN 215645060U CN 202122246914 U CN202122246914 U CN 202122246914U CN 215645060 U CN215645060 U CN 215645060U
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Abstract
The utility model discloses a bolt type connection ground screen structure which comprises a plurality of grounding round steel arranged annularly, wherein the end parts of two adjacent grounding round steel are connected through connecting sleeve threads; the grounding down-lead device further comprises at least one grounding down-lead, one end of the grounding down-lead is connected with the main material of the iron tower, and the other end of the grounding down-lead is connected with the connecting sleeve. The bolt type grounding grid structure is suitable for connecting grounding grids of power transmission line iron towers, and when the bolt type grounding grid structure is used, the laying and lapping work of the grounding grids of the power transmission line iron towers can be completed without using a welding machine. The utility model has convenient installation, can reduce manual labor, and can greatly improve the working efficiency by using the process especially aiming at sporadic ground screen defect elimination work.
Description
Technical Field
The utility model relates to the technical field of grounding, in particular to a bolt type grounding grid structure.
Background
The grounding grid is a general term for a grounding body which is composed of a plurality of metal grounding electrodes buried in the ground to a certain depth and a net structure formed by connecting the grounding electrodes with each other by conductors. The novel shielding device is widely applied to industries such as electric power, buildings, computers, industrial and mining enterprises and communication, and plays roles in safety protection, shielding and the like.
At present, lightning protection grounding of a power transmission line is mainly arranged in a round steel horizontal shallow-buried and square-ring radiation type mode, and a down lead and a grounding body are both arranged in a round steel horizontal shallow-buried and square-ring radiation type mode
The galvanized round steel adopts a few grounding bodies with lower voltage level
The conventional grounding grid connection process is a double-sided welding mode (the lap joint length is not less than 6D) and a crimping mode, but the double-sided welding mode cannot meet the current forest fire prevention requirement, and the crimping mode has the problems of inconvenient operation and low efficiency. Based on the situation, a grounding grid connection process which does not need to be fired and is more convenient to construct needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the existing ground net connection mode adopts double-sided welding or compression joint, the double-sided welding mode cannot meet the forest fire prevention requirement, and the compression joint mode is inconvenient to operate and low in efficiency, and the like.
The utility model is realized by the following technical scheme:
a bolt type connection ground screen structure comprises a plurality of grounding round steels which are annularly arranged, wherein the end parts of two adjacent grounding round steels are in threaded connection through a connecting sleeve; the grounding down-lead device further comprises at least one grounding down-lead, one end of the grounding down-lead is connected with the main material of the iron tower, and the other end of the grounding down-lead is connected with the connecting sleeve.
Further, the connection sleeve comprises a three-way connection sleeve; the end parts of the adjacent grounding round steels are connected through connecting sleeve threads, and particularly the end parts of the adjacent grounding round steels are connected through tee connecting sleeve threads.
Further, the connecting sleeve also comprises a straight-through connecting sleeve; the straight-through connecting sleeve is connected to the outer sides of the plurality of grounding round steel arranged in the annular direction.
The anti-skidding hexahedrons are arranged outside each end sleeve of the three-way connecting sleeve and the straight-through connecting sleeve, and a wrench can be adopted to fasten the anti-skidding hexahedrons through the hexahedrons on the sleeves during connection.
Furthermore, sleeve internal threads are arranged on the inner pipe walls of the three-way connecting sleeve and the straight-through connecting sleeve, and a round steel external thread matched with the sleeve internal threads is arranged at one end, connected with the connecting sleeve, of the grounding round steel.
Further, each end of the three-way connecting sleeve and each end of the straight-through connecting sleeve are provided with fastening nuts.
Furthermore, the grounding device is connected with one of the three-way connection sleeves or the through connection sleeve.
Further, the grounding round steel is galvanized round steel.
When the connecting device is used for connecting, impurities of the threaded part of the round steel which is sleeved with the thread are removed, the conducting paste is uniformly coated on the threaded part of the round steel, the two ends of the round steel are fixed, and the round steel is fastened through the hexahedron on the sleeve by a wrench. After the sleeve is fastened in place, the sleeve is fastened and reinforced by a nut. After the integral fastening is finished, brushing epoxy asphalt paint at the interface for antiseptic and moisture-proof treatment.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. the bolt type connection grounding grid structure provided by the utility model is used for connecting the grounding grids of the iron towers of the power transmission lines, and when the bolt type connection grounding grid structure is used, the laying and lapping work of the grounding grids of the iron towers of the power transmission lines can be completed without using a welding machine.
2. The bolt type connection ground net structure provided by the utility model is convenient and fast to install, can reduce manual labor, and can greatly improve the working efficiency by using the process especially for sporadic ground net defect elimination work.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic diagram of a grounding grid connection according to the present invention;
FIG. 2 is a schematic view of the connection between the grounding down-lead and the main material of the iron tower of the present invention;
FIG. 3 is a schematic view of a straight-through connection sleeve configuration of the present invention;
FIG. 4 is a schematic view of a three-way connection sleeve structure of the present invention;
FIG. 5 is a single sleeve section view at either end of the through-connection sleeve or three-way connection sleeve of the present invention.
Reference numbers and corresponding part names in the drawings:
1-grounding round steel, 2-three-way connecting sleeve, 3-straight-through connecting sleeve, 4-grounding down-lead drill, 5-iron tower foundation, 6-grounding device, 7-iron tower main material, 8-ground plane, 9-fastening nut, 10-round steel external thread, 31-sleeve, 32-sleeve internal thread, 21-three-way connecting sleeve first end, 22-three-way connecting sleeve second end and 23-three-way connecting sleeve third end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment 1 provides a bolt type connection ground grid structure, as shown in fig. 1, fig. 1 is a schematic connection diagram of a ground grid, and includes a plurality of ground round steel 1 arranged annularly, specifically, a plurality of ground round steel 1 arranged in a square shape are connected into an integral ground grid structure through a plurality of three-way connection sleeves 2; through connecting sleeve pipe threaded connection between the adjacent ground connection round steel 1 tip, specifically, will need two tip difference mantle wires of the ground connection round steel 1 of connecting to and with the tapping respectively of sleeve pipe both ends inner wall, sleeve pipe internal thread and round steel external screw thread all need one just to turn over, then realize two-way tightening up the connection through rotatory sleeve pipe.
The connecting sleeve in the embodiment comprises a three-way connecting sleeve 2 and a straight-through connecting sleeve 3; the adjacent ends of the grounding round steel 1 are in threaded connection through the three-way connecting sleeve 2, when the connecting device is used, two ends with external threads of the two grounding round steel 1 to be connected are respectively aligned to the sleeve openings, and then bidirectional tightening connection is realized through the rotating sleeve.
As shown in fig. 1, the present embodiment 1 includes four grounding down-conducting rods 4, as shown in fig. 2, one end of each grounding down-conducting rod 4 is connected with a main material 7 of an iron tower, and the other end is connected with a three-way connecting sleeve 2; the grounding down-lead 4 is used for connecting the main material 7 of the iron tower with the grounding round steel 1 so as to achieve the effect of electric conduction. As shown in FIG. 3, the three-way union bushing 2 has a three-way union bushing first end 21, a three-way union bushing second end 22, and a three-way union bushing third end 23.
As shown in fig. 3, 4 and 5, internal casing threads 32 are arranged on the inner pipe walls of the three-way connecting casing 2 and the through-way connecting casing 3, and a round steel external thread 10 matched with the internal casing threads 32 is arranged at one end of the grounding round steel 1 connected with the connecting casing.
As shown in fig. 1, the present embodiment 1 is further provided with a grounding device 6, the grounding device 6 is used for reducing the resistance of the grounding grid, and the grounding device 6 is connected with one end of the three-way connection sleeve 2 or the through connection sleeve 3 at one end part of the external part of the square grounding grid.
In order to achieve a better conductive effect, the three-way connecting sleeve 2 and the straight-through connecting sleeve 3 in the embodiment both adopt hot galvanizing sleeves, and the grounding round steel 1 adopts galvanized round steel. After the connection is finished, the sleeve and the position, not less than 10cm, of the periphery of the sleeve are coated with epoxy asphalt paint for anticorrosion and moisture-proof treatment.
Example 2
The embodiment 1 provides a bolt type connection ground grid structure, as shown in fig. 1, fig. 1 is a schematic connection diagram of a ground grid, and includes a plurality of ground round steel 1 arranged annularly, specifically, a plurality of ground round steel 1 arranged in a square shape are connected into an integral ground grid structure through a plurality of three-way connection sleeves 2; through connecting sleeve pipe threaded connection between the adjacent ground connection round steel 1 tip, specifically, will need two tip difference mantle wires of the ground connection round steel 1 of connecting to and with the tapping respectively of sleeve pipe both ends inner wall, sleeve pipe internal thread and round steel external screw thread all need one just to turn over, then realize two-way tightening up the connection through rotatory sleeve pipe.
The connecting sleeve in the embodiment comprises a three-way connecting sleeve 2 and a straight-through connecting sleeve 3; the adjacent ends of the grounding round steel 1 are in threaded connection through the three-way connecting sleeve 2, when the connecting device is used, two ends with external threads of the two grounding round steel 1 to be connected are respectively aligned to the sleeve openings, and then bidirectional tightening connection is realized through the rotating sleeve.
The difference between this embodiment and embodiment 1 is that, in order to achieve a better fastening effect, this embodiment further configures a fastening nut 9 for each end of the sleeve, as shown in fig. 3 and 4, specifically, each end of the three-way connection sleeve 2 and the through-way connection sleeve 3 is provided with a fastening nut 9, and after the sleeves are fastened in place, the sleeves are fastened and reinforced by the fastening nuts 9, so as to achieve a better fastening effect.
As shown in fig. 1, the present embodiment 1 includes four grounding down-conducting rods 4, as shown in fig. 2, one end of each grounding down-conducting rod 4 is connected with a main material 7 of an iron tower, and the other end is connected with a three-way connecting sleeve 2; the grounding down-lead 4 is used for connecting the main material 7 of the iron tower with the grounding round steel 1 so as to achieve the effect of electric conduction. As shown in FIG. 3, the three-way union bushing 2 has a three-way union bushing first end 21, a three-way union bushing second end 22, and a three-way union bushing third end 23.
As shown in fig. 3, 4 and 5, internal casing threads 32 are arranged on the inner pipe walls of the three-way connecting casing 2 and the through-way connecting casing 3, and a round steel external thread 10 matched with the internal casing threads 32 is arranged at one end of the grounding round steel 1 connected with the connecting casing.
As shown in fig. 1, the present embodiment 1 is further provided with a grounding device 6, the grounding device 6 is used for reducing the resistance of the grounding grid, and the grounding device 6 is connected with one end of the three-way connection sleeve 2 or the through connection sleeve 3 at one end part of the external part of the square grounding grid.
In order to achieve a better conductive effect, the three-way connecting sleeve 2 and the straight-through connecting sleeve 3 in the embodiment both adopt hot galvanizing sleeves, and the grounding round steel 1 adopts galvanized round steel. After the connection is finished, the sleeve and the position, not less than 10cm, of the periphery of the sleeve are coated with epoxy asphalt paint for anticorrosion and moisture-proof treatment.
The galvanized sleeve (the three-way connecting sleeve 2 and the straight-through connecting sleeve 3) of the utility model is processed and manufactured to meet the following manufacturing requirements: the straight-through connecting sleeve and the three-way T-shaped connecting sleeve are made of carbon steel of Q235 and above, can be processed into models (D represents the diameter) of D10-D10, D12-D10, D12-D12, D10-D10-D10, D10-D10-D12, D12-D12-D12 and the like according to actual requirements, and are molded by processes of welding, grinding and the like.
Before connection, impurities of the threaded part of the round steel which is sleeved with the thread are removed, the round steel is uniformly coated with the conductive paste, two ends of the round steel are fixed, and the round steel is fastened through a hexahedron on the sleeve by a wrench. After the sleeve is fastened in place, the sleeve is fastened and reinforced by a nut. After the integral fastening is finished, brushing epoxy asphalt paint at the interface for antiseptic and moisture-proof treatment.
And (4) related tests:
(I) conductivity and tensile Strength test
In order to verify the conductivity and the structural strength of the grounding body manufactured by the process, after a sleeve sample is manufactured, galvanized round steel with a certain length is taken on site to be sheathed, connection is completed, and a welding sample with the same length and a round steel sample without an intermediate joint are taken to be tested together.
And (4) test conclusion: the direct joint and the three-way joint samples are slightly superior to the samples without the middle joint in the aspect of electric conductivity, slightly inferior to the samples welded on two sides, and meet the requirements on electric conductivity; although the tensile strength data is lower than that of a welding sample and a non-joint sample, the actually measured data exceeds 23kN, and the field requirement can be met.
(II) Corrosion resistance test (salt spray test)
In order to verify the corrosion resistance of the connecting point of the process, a salt spray test for 96 hours is carried out.
And (4) test conclusion: the sleeve which is coated with the epoxy asphalt paint is not corroded, the outer part of the sleeve which is not coated with the epoxy asphalt paint is corroded seriously, but the bolt in the sleeve is not corroded, so that the tightness of the sleeve meets the requirement, and the anticorrosion treatment mode of coating the epoxy asphalt paint meets the requirement.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The bolt type connection ground screen structure is characterized by comprising a plurality of grounding round steels (1) which are annularly arranged, wherein the end parts of two adjacent grounding round steels (1) are in threaded connection through connecting sleeves; the grounding down-lead device is characterized by further comprising at least one grounding down-lead (4), wherein one end of the grounding down-lead (4) is connected with the main material (7) of the iron tower, and the other end of the grounding down-lead (4) is connected with the connecting sleeve.
2. A bolted connection counterpoise structure according to claim 1, wherein said connection sleeve comprises a three-way connection sleeve (2); the connecting sleeve threaded connection is adopted between the end parts of the adjacent grounding round steels (1), and is specifically characterized in that the end parts of the adjacent grounding round steels (1) are connected through a tee connecting sleeve (2) in a threaded manner.
3. A bolted connection counterpoise structure according to claim 2, wherein said connecting sleeves further comprise through-connecting sleeves (3); the straight-through connecting sleeve (3) is connected to the outer sides of the plurality of grounding round steel (1) which are arranged in the circumferential direction.
4. A bolted connection counterpoise structure according to claim 3, characterized in that the inner walls of the three-way connection sleeve (2) and the through connection sleeve (3) are provided with internal sleeve threads (32), and the end of the ground round steel (1) connected with the connection sleeve is provided with external round steel threads (10) which are matched with the internal sleeve threads (32).
5. A bolted connection counterpoise structure according to claim 3, characterized in that the three-way connection sleeve (2) and the through-connection sleeve (3) are provided with a fastening nut (9) at each end.
6. A bolted geonet structure according to claim 1, further comprising at least one grounding device (6), said grounding device (6) being connected to one of the three-way connecting sleeves (2) or the through-connecting sleeve (3).
7. A bolted connection geonet structure according to claim 1, characterized in that said ground bars (1) are galvanized bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122246914.4U CN215645060U (en) | 2021-09-16 | 2021-09-16 | Bolt type connection ground screen structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122246914.4U CN215645060U (en) | 2021-09-16 | 2021-09-16 | Bolt type connection ground screen structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215645060U true CN215645060U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122246914.4U Active CN215645060U (en) | 2021-09-16 | 2021-09-16 | Bolt type connection ground screen structure |
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| CN (1) | CN215645060U (en) |
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2021
- 2021-09-16 CN CN202122246914.4U patent/CN215645060U/en active Active
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