Lightning protection grounding device for hydropower station

Abstract

The utility model provides a hydropower station lightning protection grounding device which comprises a disc body, a needle rod is installed in the middle of the top of the disc body, a column rod is installed in the middle of the bottom of the disc body, a plurality of connecting lugs are annularly installed on the lower surface of the disc body at equal intervals, and the ends, away from the disc body, of the connecting lugs incline downwards. Positioning holes are uniformly formed in the connecting lug, a wiring terminal attached to the connecting lug is arranged on the lower surface of the connecting lug, a plurality of through holes matched with the positioning holes are uniformly formed in one surface of the wiring terminal, a pressing plate is arranged on one side, deviating from the connecting lug, of the wiring terminal, and a plurality of positioning columns are uniformly mounted on one surface of the pressing plate; the positioning column is inserted in a channel formed by the through hole and the positioning hole, the column rod is in threaded connection with a hollow conical head used for extruding the pressing plate, and the wiring terminal has the following beneficial effects that the installation steps and time are reduced, and the problem that the wiring terminal is difficult to replace due to the corrosion of the bolt is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lightning protection grounding device of hydropower station belongs to lightning protection technical field. BACKGROUND

[0002] The lightning protection grounding of hydropower station is an important measure to guarantee the safe and stable operation of hydropower station, and the purpose is to introduce the current generated by lightning into the ground to avoid the damage of lightning to electrical equipment, buildings and personnel of hydropower station. As a common and important lightning protection facility, lightning rod plays a key role in protecting various buildings and equipment from lightning damage. In order to more efficiently increase the discharge channel and realize the rapid dispersion of lightning current, multiple connecting ears are usually installed on the lightning rod, which are mainly used for connecting with the terminal.

[0003] At present, the connecting ear and the terminal are generally connected by bolts. However, due to the large number of connecting ears, this connection method inevitably requires a large number of bolts. This situation brings many problems: on the one hand, the use of a large number of bolts greatly affects the assembly efficiency, and in the installation process, a large amount of time is needed for the tightening operation of each bolt; on the other hand, in the actual use environment, the bolt is exposed to the outside for a long time, and is easily eroded by rain, air and other factors. Once the bolt is rusted, the disassembly difficulty will be greatly increased, which not only brings great inconvenience to the replacement of the terminal, but also may affect the normal operation of the whole lightning protection system due to the failure to replace the terminal in time, thereby reducing the lightning protection effect of the building and equipment. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a lightning protection grounding device for hydropower station to solve the problems raised in the background art. The utility model reduces the installation steps and time, and effectively avoids the problem of difficult replacement of terminal caused by bolt rust.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical scheme: a lightning protection grounding device for hydropower station, comprising a disc body, a needle rod is installed at the top middle position of the disc body, a column rod is installed at the bottom middle position of the disc body, a plurality of connecting ears are installed at the lower surface of the disc body in bad shape and equidistantly, the end of the connecting ear away from the disc body is arranged downwardly inclined, a plurality of positioning holes are uniformly arranged on the connecting ear, a terminal is arranged on the lower surface of the connecting ear and matched with the connecting ear, a plurality of through holes matched with the positioning holes are uniformly arranged on one side of the terminal, a pressing plate is arranged on the side of the terminal away from the connecting ear, a plurality of positioning columns are uniformly installed on one side of the pressing plate, the positioning columns are inserted into the channel formed by the through holes and the positioning holes, a hollow tapered head for extruding the pressing plate is threadedly connected on the column rod, and the tapered head is of upper narrow and lower wide structure.

[0006] Further, the middle position of the lower surface of the conical head is provided with an internally threaded sleeve, the externally threaded column is connected with the internally threaded sleeve by internal thread, the externally threaded column is sleeved on the column rod and connected with the column rod by a screw.

[0007] Further, the upper side of the externally threaded column is provided with a connecting disc, the connecting disc is sleeved on the column rod and connected and fixed with the column rod, a plurality of small holes are arranged on the upper surface of the connecting disc in a ring shape and equidistantly, a plurality of threaded blind holes are uniformly arranged on the upper surface of the externally threaded column, and one end of the screw passes through the small hole and is connected in the threaded blind hole by thread.

[0008] Further, the lower end of the internally threaded sleeve is sleeved with a hexahedron, and the hexahedron and the internally threaded sleeve are in an integral molding structure.

[0009] Further, a plurality of auxiliary needle heads are arranged on the disc body in a ring shape and equidistantly, and the lower end of the auxiliary needle head is connected with the disc body by a rivet.

[0010] Further, a detachable bottom disc is arranged at the lower end of the column rod, and a plurality of fixing holes are arranged on the upper surface of the bottom disc in a ring shape and equidistantly.

[0011] Further, a straight threaded cylinder is arranged at the middle position of the upper surface of the bottom disc, an external thread is processed on the outer surface of the lower end of the column rod, and the end of the column rod with the processed external thread is connected in the straight threaded cylinder by thread.

[0012] The utility model discloses the beneficial effect of:

[0013] 1. Discard a large number of bolt connection mode, adopt the positioning column insertion perforation with positioning hole, then use conical head extrusion pressing plate's connection structure. When installing, only need to aim at inserting the positioning column, rotates conical head to can complete connection, need not to tighten several bolts one by one, greatly reduces installation step and time, significantly improves assembly efficiency.

[0014] 2. When needing to replace the terminal, the pressing plate, terminal and connecting lug can be easily separated by unscrewing the conical head. Compared with the traditional rusted bolt which is difficult to disassemble, the device is simple to operate, effectively avoids the problem of difficult replacement of the terminal caused by bolt rust, ensures that the lightning protection system can be maintained in time, maintains normal operation and ensures the lightning protection effect of the hydropower station.

[0015] 3. The externally threaded column and the connecting disc are connected by a screw, the assembly of the externally threaded column and the column rod is completed, and when the threads on the externally threaded column are damaged due to bumping or other reasons, the externally threaded column can be replaced individually after the screw is disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0016] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-restrictive embodiments with reference to the following drawings:

[0017] Figure 1 It is a structure schematic view of the water power station lightning protection grounding device of the utility model;

[0018] Figure 2 It is an assembly schematic view of the connecting lug, the column rod, the external thread column and the disc body in the water power station lightning protection grounding device of the utility model;

[0019] Figure 3 It is an assembly schematic view of the internal thread sleeve and the conical head in the water power station lightning protection grounding device of the utility model;

[0020] Figure 4 It is an explosion structure schematic view of the pressing plate and the wiring terminal in the water power station lightning protection grounding device of the utility model;

[0021] In the drawing: 1-disc body, 2-secondary needle head, 3-needle rod, 4-connecting lug, 5-positioning column, 6-wiring terminal, 7-conical head, 8-internal thread sleeve, 9-external thread column, 10-column rod, 11-straight thread cylinder, 12-base, 13-pressing plate, 14-fixing hole, 15-hexahedron, 16-positioning hole, 17-screw, 18-connecting disc, 19-perforation. DETAILED DESCRIPTION

[0022] In order to make the technical means, the creation features, the purposes and the effects realized by the utility model easy to understand, the utility model is further described below in combination with the specific implementation manners.

[0023] Please refer to Figure 1 and Figure 2 The utility model provides a technical scheme: a water power station lightning protection grounding device, including disc body 1, disc body 1 top middle position installs needle rod 3, disc body 1 is installed with multiple secondary needle heads 2 in annular equidistance, wherein secondary needle head 2 lower end is connected with disc body 1 through rivet, disc body 1 is provided with multiple secondary needle heads 2, and the lightning attraction area is increased. In the thunder and lightning environment, can more effectively attract lightning, and the drainage channel constructed by connecting lug 4 and wiring terminal 6 makes lightning current more quickly and smoothly into the earth, improves the lightning protection capability of water power station lightning protection grounding device, reduces the damage risk of lightning to water power station equipment and personnel.

[0024] Refer to Figure 1 and Figure 2The middle position of the bottom of the disc body 1 is provided with a column 10, wherein the lower end of the column 10 is provided with a detachable bottom disc 12, the upper surface of the bottom disc 12 is provided with a straight thread cylinder 11, the outer surface of the lower end of the column 10 is provided with external threads, the end of the column 10 provided with external threads is screwed into the straight thread cylinder 11, so as to facilitate the disassembly of the column 10 and the bottom disc 12, a plurality of fixing holes 14 are equidistantly arranged on the upper surface of the bottom disc 12 in a ring shape, and the bottom disc 12 is installed on the top of the building by the fixing holes 14 to limit the position of the column 10.

[0025] Referring to Figures 1-4 The lower surface of the disc body 1 is provided with a plurality of connecting ears 4 in a ring shape, the end of the connecting ear 4 away from the disc body 1 is arranged downwardly inclined, a plurality of positioning holes 16 are uniformly arranged on the connecting ear 4, the lower surface of the connecting ear 4 is provided with a terminal 6 matched with the connecting ear 4, one side of the terminal 6 is uniformly provided with a plurality of through holes 19 matched with the positioning holes 16, the side of the terminal 6 away from the connecting ear 4 is provided with a pressing plate 13, one side of the pressing plate 13 is uniformly provided with a plurality of positioning columns 5, the positioning column 5 is inserted into the channel formed by the through hole 19 and the positioning hole 16, the column 10 is screwed with a hollow tapered head 7 for extruding the pressing plate 13, the tapered head 7 has a structure of being narrow at the top and wide at the bottom. In the traditional lightning protection grounding device of the hydropower station, the connecting ear 4 and the terminal 6 are connected by a large number of bolts, and the installation process is complicated and low in efficiency. The device breaks through the traditional mode and innovatively abandons the large number of bolt connection mode, and constructs a new connection structure. The structure is mainly composed of the positioning column 5, the through hole 19, the positioning hole 16, the pressing plate 13 and the tapered head 7. In the installation, the operation steps are greatly simplified, the installer only needs to accurately align the positioning column 5 on the pressing plate 13 with the through hole 19 of the terminal 6 and the positioning hole 16 of the connecting ear 4, then inserts, and then rotates the hollow tapered head 7 with the structure of being narrow at the top and wide at the bottom. With the rotation of the tapered head 7, it will move upward along the threads of the column 10, so as to extrude the pressing plate 13. The extrusion makes the terminal 6 and the connecting ear 4 closely match, and the stable connection is completed.

[0026] Compared with the traditional mode, the structure completely eliminates the time-consuming and laborious operation process of tightening a plurality of bolts one by one. This not only greatly reduces the installation steps, but also greatly shortens the time required for installation, thereby significantly improving the overall assembly efficiency, and providing a strong guarantee for the rapid installation of the lightning protection grounding device of the hydropower station.

[0027] When the terminal 6 needs to be replaced, the worker only needs to easily twist off the conical head 7 on the column 10, and the lost compression plate 13 no longer has a fastening effect on the terminal 6 and the connecting lug 4, at which time the compression plate 13, the terminal 6 and the connecting lug 4 can be easily separated. This operation is very simple, greatly reduces the difficulty of replacing the terminal 6, and avoids the problem of difficulty in replacement due to bolt rust. Through this way, it can ensure that the lightning protection system is maintained in time and always maintained in a normal operating state, providing a solid and reliable guarantee for the lightning protection effect of the hydropower station.

[0028] Referring to Figure 1 and Figure 2 , the inner threaded sleeve 8 is installed in the middle position of the lower surface of the conical head 7, the outer threaded column 9 is connected with the inner threaded sleeve 8 through internal threads, the inner threaded sleeve 8 and the outer threaded column 9 can be treated by anti-rust process, or can be made of plastic, the outer threaded column 9 is sleeved on the column 10 and connected with the column 10 through the screw 17, the connecting disc 18 is provided on the upper side of the outer threaded column 9, the connecting disc 18 is sleeved on the column 10 and connected and fixed with the column 10, a plurality of small holes are annularly and equidistantly provided on the upper surface of the connecting disc 18, a plurality of threaded blind holes are uniformly provided on the upper surface of the outer threaded column 9, one end of the screw 17 passes through the small hole and is threadedly connected in the threaded blind hole, the hexahedron 15 is sleeved on the lower end of the inner threaded sleeve 8, the hexahedron 15 is an integral molding structure with the inner threaded sleeve 8, the hexahedron 15 provides a clamping position for a wrench, and the outer threaded column 9 and the connecting disc 18 are connected through the screw 17, so as to realize the assembly of the outer threaded column 9 and the column 10. In actual use, the threads on the surface of the outer threaded column 9 may be damaged due to various reasons, such as being knocked. However, thanks to this design, the maintenance work becomes very convenient. Once it is found that the threads of the outer threaded column 9 are damaged, the worker only needs to disassemble the screw 17 connecting the outer threaded column 9 and the connecting disc 18, so as to separately take out and replace the damaged outer threaded column 9, without the need to disassemble and replace other parts of the entire device on a large scale.

[0029] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightning protection grounding device for a hydropower station, comprising a disc body, characterized in that: The needle rod is installed in the middle of the top of the disc body, the column rod is installed in the middle of the bottom of the disc body, a plurality of connecting ears are installed on the lower surface of the disc body in a ring shape at equal intervals, the end of the connecting ear away from the disc body is arranged downwardly inclined, a plurality of positioning holes are uniformly arranged on the connecting ear, the lower surface of the connecting ear is provided with a terminal which is attached to the connecting ear, a plurality of through holes matched with the positioning holes are uniformly arranged on one side of the terminal, the side of the terminal away from the connecting ear is provided with a pressing plate, a plurality of positioning columns are uniformly installed on one side of the pressing plate, the positioning columns are inserted into the channel formed by the through holes and the positioning holes, the hollow tapered head for extruding the pressing plate is threadedly connected to the column rod, and the tapered head has a structure of being narrow at the top and wide at the bottom.

2. A lightning protection grounding device for a hydropower station according to claim 1, characterized in that: The inner threaded sleeve is installed in the middle of the lower surface of the tapered head, the outer threaded column is threadedly connected to the inner threaded sleeve, and the outer threaded column is sleeved on the column rod and connected to the column rod by a screw.

3. A lightning protection grounding device for a hydropower station according to claim 2, characterized in that: The connecting disc is arranged on the upper side of the outer threaded column, the connecting disc is sleeved on the column rod and connected and fixed to the column rod, a plurality of small holes are arranged on the upper surface of the connecting disc in a ring shape at equal intervals, a plurality of threaded blind holes are uniformly arranged on the upper surface of the outer threaded column, and one end of the screw passes through the small hole and is threadedly connected in the threaded blind hole.

4. The lightning protection grounding device for a hydropower station according to claim 2, characterized in that: The hexahedron is sleeved on the lower end of the inner threaded sleeve, and the hexahedron and the inner threaded sleeve are formed in an integral structure.

5. The lightning protection grounding device for a hydropower station according to claim 1, characterized in that: A plurality of auxiliary needle heads are arranged on the disc body in a ring shape at equal intervals, and the auxiliary needle heads are connected to the disc body by rivets.

6. The lightning protection grounding device for a hydropower station according to claim 1, characterized in that: The detachable bottom disc is installed on the lower end of the column rod, and a plurality of fixing holes are arranged on the upper surface of the bottom disc in a ring shape at equal intervals.

7. A lightning protection grounding device for a hydropower station according to claim 6, characterized in that: The straight threaded cylinder is installed on the middle of the upper surface of the bottom disc, the outer surface of the lower end of the column rod is processed with an outer thread, and the end of the column rod processed with the outer thread is threadedly connected in the straight threaded cylinder.

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