CN218386724U - Comprehensive lightning protection device - Google Patents
Comprehensive lightning protection device Download PDFInfo
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- CN218386724U CN218386724U CN202222207567.9U CN202222207567U CN218386724U CN 218386724 U CN218386724 U CN 218386724U CN 202222207567 U CN202222207567 U CN 202222207567U CN 218386724 U CN218386724 U CN 218386724U
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Abstract
The utility model provides a comprehensive lightning protection device, the comprehensive lightning protection device comprises a cross arm steel frame, one side of the cross arm steel frame is connected with an epitaxial steel frame, and the epitaxial steel frame extends along the horizontal direction away from the cross arm steel frame; the top ends of the lightning arrester and the insulator are respectively connected with the epitaxial steel frame; the comprehensive lightning protection device further comprises a lightning receptor arranged at the top end of the extension steel frame. The lightning arrester, the lightning arrester and the insulator are simultaneously installed on the cross arm steel frame, so that the leakage flow of the tower can be effectively increased, and the tower is protected from lightning stroke faults. Meanwhile, the device can enhance the installation stability of the lightning arrester, the insulator and the lightning arrester and reduce the influence of external factors.
Description
Technical Field
The application relates to the field of high-voltage power transmission, in particular to a comprehensive lightning protection device.
Background
High-voltage transmission lines are important components in power systems, and the normal operation of the high-voltage transmission lines is crucial to the long-distance transmission of electric energy. According to the regulations in China, the lightning conductor is erected on the whole high-voltage transmission line, the shielding effect of the lightning conductor can protect the conductor from direct lightning strike, and particularly, the lightning conductor has a good protection effect on large-amplitude lightning current. According to an electrical geometric model, the impact distances of a conducting wire and a lightning conductor are the same, the lightning conductor is usually erected above the conducting wire, and a lightning stroke is supposed to develop vertically to the ground, so that when the lightning stroke occurs, the lightning conductor can attract lightning firstly, the lightning conductor can be quickly cast to two sides and flows into the ground at a tower, the larger the lightning current amplitude is, the wider the protection range of the lightning conductor is, when the lightning current amplitude is larger than a certain value, the conducting wire is completely protected by the lightning conductor, no anti-accident can occur, but the prevention effect on small-amplitude lightning current is poor, so that few counterattack faults occur in the lightning faults of a high-voltage transmission line, and most of the lightning faults are the tripping faults of the transmission line, namely, the lightning current bypasses the lightning conductor to directly attack the lightning conductor to cause the line tripping fault, according to a lightning current amplitude probability density function recommended by the regulations of China, the average lightning current amplitude in nature is about 30kA, the lightning current amplitude is lower than the level, and the lightning current amplitude is lower than the level, so that the tripping risk of the transmission line still exists, therefore, a research on the anti-attack method for the high-voltage transmission line is necessary, and a shielding measure suitable for the high-voltage transmission line is provided.
At present, lightning protection measures for the power transmission line include a lightning arrester, an improved insulation, a lightning arrester and the like besides the lightning conductor, so that more shielding failure prevention means are provided for the high-voltage power transmission line, for example, the number of the lightning conductors is increased, and the attraction to lightning stroke is enhanced by adopting double lightning conductors, so that the conductor is protected from being subjected to direct lightning stroke; by installing the lightning arrester on each phase line, overvoltage on two sides of the insulator is inhibited during lightning stroke, and a transmission channel leading to the ground is provided for lightning current, so that flashover and tripping of the lines are avoided; the lightning resistance level of the line can be enhanced by improving the insulation, so that the line is more difficult to generate flashover tripping under the condition of lightning current invasion with the same amplitude; the lightning receptor is similar to a lightning conductor in principle and is usually fixed on a tower, and the transmission conductor is protected from direct lightning attack by actively attracting lightning.
However, when a lightning fault occurs on the tower, a part of lightning current may leak from the lightning conductor, and a large part of lightning current may leak to the ground from the tower, so that the tower itself may bear a large current, and the insulator on the tower may exceed the maximum current and the leakage current that can be borne.
SUMMERY OF THE UTILITY MODEL
The utility model provides a synthesize lightning protection device to solve prior art, owing to the shaft tower bears great electric current when the thunderbolt trouble, and lead to insulator on the shaft tower to exceed the maximum current that can bear and the discharge capacity.
The following scheme is adopted in the application:
synthesize lightning protection device includes:
the extension steel frame extends along the horizontal direction which is far away from the cross arm steel frame;
the top ends of the lightning arrester and the insulator are respectively connected with the epitaxial steel frame;
the comprehensive lightning protection device further comprises a lightning receptor arranged at the top end of the extension steel frame.
Further, the insulator includes:
the insulating umbrella skirt is connected with the epitaxial steel frame;
the insulation main body is arranged at the lower end of the insulation umbrella skirt, and the insulation umbrella skirt is connected with the insulation main body through a detachable screw;
the insulator further comprises an insulation auxiliary body arranged at the lower end of the insulation main body, and the insulation main body is connected with the insulation auxiliary body through a detachable screw.
Furthermore, the steelframe of epitaxy is W-shaped structure, the arrester with the insulator is located respectively the bottom of the both sides intersect department of W-shaped structure, the arrester is located the top of the central intersect department of W-shaped structure.
Further, the lightning receptor comprises:
the lightning receiving base, the fixed sleeve and the lightning receiving rod are arranged on the lightning receiving base;
the lightning receiving base is connected with the epitaxial steel frame;
the fixed sleeve is of a hollow columnar structure, one end of the fixed sleeve is connected with the lightning receiving base, and the other end of the fixed sleeve is a preset length in the direction away from the lightning receiving base;
the lightning rod is of a needle-shaped structure, one end of the lightning rod is connected with the bottom of the hollow fixed sleeve, and the other end of the lightning rod extends along the direction of the far away fixed sleeve.
Further, the lightning receptor further comprises:
the grounding lead and the lightning conductor are hooked;
and one end of the grounding lead is connected with the lightning receiving base, and the other end of the grounding lead is connected with the lightning conductor hook.
Further, the lightning conductor hook comprises a first hook arm and a second hook arm;
the first hook arm and the second hook arm are of semicircular structures, and the first hook arm and the second hook arm are connected in a sliding mode to form a circular structure with an opening.
Furthermore, a fixing head is arranged at one end, far away from the grounding lead, of the first hook arm;
one end of the second hook arm, which is far away from the grounding lead, is provided with a fixing opening corresponding to the fixing head;
the fixing head and the fixing port are provided with bolt holes, and when the fixing head is embedded into the fixing port in a sliding mode, the fixing head and the fixing port are fixed through the bolt holes.
Furthermore, the first hook arm and the second hook arm are provided with embedded slideways and are connected through the slideways by bolts.
The utility model provides a comprehensive lightning protection device, which comprises a cross arm steel frame, wherein one side of the cross arm steel frame is connected with an extension steel frame, and the extension steel frame extends along the horizontal direction away from the cross arm steel frame; the top ends of the lightning arrester and the insulator are respectively connected with the epitaxial steel frame; the comprehensive lightning protection device further comprises a lightning receptor arranged at the top end of the extension steel frame. The lightning arrester, the lightning arrester and the insulator are simultaneously installed on the cross arm steel frame, so that the leakage flow of the tower can be effectively increased, and the tower is protected from lightning stroke faults. Meanwhile, the device can enhance the installation stability of the lightning arrester, the insulator and the lightning arrester and reduce the influence of external factors.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic front view of an integrated lightning protection device according to the present application;
FIG. 2 is a schematic top view of an integrated lightning protection device according to the present application;
fig. 3 is a schematic front view of a lightning conductor hook in the integrated lightning protection device according to the present application;
fig. 4 is a schematic cross-sectional view of a lightning conductor hook in an integrated lightning protection device according to the present application.
In the figure: 1-cross arm steel frame; 11-an epitaxial steel frame; 2-a lightning arrester; 3, an insulator; 31-insulating umbrella skirt; 32-detachable screws; 33-an insulating body; 321-an insulating sub-body; 4-a lightning receptor; 41-lightning-receptor base; 42-a fixed sleeve; 43-lightning rod; 44-ground lead; 45-lightning conductor hook; 451-first hanger arm; 452-a second hanger arm; 453-fixed head; 454-fixed port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When the thunderbolt of great current appears, the pole tower can appear the thunderbolt trouble, and corresponding some electric current can be followed the lightning conductor and derived, still has great some electric current and inducts the ground via the pole tower, and this just makes the pole tower stand great electric current to the insulator on the pole tower also can be because the electric current too big condition that breaks down, consequently, based on how to reduce the pole tower and bear the electric current, the embodiment as follows is proposed in this application.
Fig. 1 is a schematic front view of an integrated lightning protection device according to the present application, and fig. 2 is a schematic top view of the integrated lightning protection device according to the present application.
As can be seen from fig. 1 and 2, the integrated lightning protection device according to the present application includes:
the device comprises a cross arm steel frame 1, wherein one side of the cross arm steel frame 1 is connected with an extension steel frame 11, and the extension steel frame 11 extends along a horizontal direction far away from the cross arm steel frame 1;
specifically, in this embodiment, the cross arm steel frame 1 plays a role of placing other sub components, and the extension steel frame 11 is connected to one side of the cross arm steel frame 1. The main body structure of the cross arm steel frame 1 is a rectangular frame connected by steel, the rectangular frame is coated with a layer of resin coating from inside to outside and then coated with a layer of weather-resistant coating, and the cross arm steel frame 1 can be treated by using the following advantages:
a. the cross arm main part steel construction weight reduction guarantees the mechanical strength and the lightning protection level of shaft tower, and has realized the whole lightweight of shaft tower, has reduced preparation, transportation and installation cost. The functions of an external insulator and the like are more effectively born, and the influence caused by internal stress is improved.
b. The resin coating is light-cured at normal temperature, is easy to construct, plays a role of a base material between steel and the weather-resistant coating, and the conductive filler of the resin coating forms a conductive channel, so that the volume resistivity is reduced, and the lightning protection level is improved.
c. The weather-resistant coating has excellent weather resistance, corrosion resistance and stability, is stable under the corrosion and interference of an external environment, is beneficial to prolonging the service life and lightning protection level of a steel structure, and obviously reduces tower accidents.
d. The resin coating and the weather-resistant coating are coated on the surface, so that the capability of the cross arm for resisting ultraviolet radiation is obviously enhanced, the stability of the mechanical and electrical properties of the tower is ensured, and the service life of the tower is effectively prolonged.
The top ends of the lightning arrester 2 and the insulator 3 are respectively connected with the epitaxial steel frame 11;
specifically, in this embodiment, the lightning arrester 2 and the insulator 3 are both disposed on the extension steel frame 11, and different from the conventional method in which the lightning arrester 2 and the insulator 3 are directly disposed on the cross arm steel frame 1, the lightning arrester 2 and the insulator 3 are disposed on the extension steel frame 11, so that the lightning arrester 2 and the insulator 3 can be separated from the tower by a distance.
The comprehensive lightning protection device further comprises a lightning receptor 4 arranged at the top end of the extension steel frame 11.
The lightning receptor 4 is a lightning rod, a lightning strip (wire), a lightning net, a metal roof, a metal member, or the like, which is used for directly receiving lightning strikes. It has good electric connection with the down lead and the grounding device. The lightning protection device has the function that when lightning directly hits the lightning protection device, lightning current rapidly leaks to the ground from the lightning protection device through the down conductor and the grounding device, so that the building and electrical equipment in the building are protected.
Specifically, in this embodiment, as for the same installation position of the lightning arrester 2 and the insulator 3, the lightning receptor 4 is also disposed on the extension steel frame 11, but different from the lightning arrester 2 and the insulator 3, the lightning receptor 4 is disposed at the upper end of the extension steel frame 11, and the reason why the lightning receptor 4 is disposed at the upper end of the extension steel frame 11 is that it can contact the lightning strike flow maximally when the lightning strike occurs, so as to provide a better current leakage effect; however, it should be noted that the location of the lightning receptor 4 may be changed according to different requirements, for example, the lightning receptor 4 may also be horizontally located, and the location of the lightning receptor 4 is not limited herein.
Preferably, the insulator 3 includes:
an insulating shed 31 connected with the extension steel frame 11;
specifically, in the present embodiment, the insulating shed 31 is disposed at the top end of the insulator 3, the insulating shed 31 can effectively protect the core rod in the insulator 3 from weather and electric corrosion, and the insulating shed 31 also provides a creepage distance; the insulating umbrella skirt 31 is made of three-dimensional glass fiber three-dimensional fabric soaked with epoxy resin, and the weight of the insulating umbrella skirt 31 can be effectively reduced by adopting the manufacturing material, so that the gravity load of the whole device is reduced, and the service life of the whole device is indirectly prolonged.
An insulating main body 33 arranged at the lower end of the insulating shed 31, wherein the insulating shed 31 is connected with the insulating main body 33 through a detachable screw 32;
specifically, in this embodiment, in consideration of the problem that the insulating shed 31 or the insulating main body 33 may be aged, and in the prior art, once the insulator 3 has a problem, the entire insulator 3 needs to be replaced, which inevitably makes the parts of the insulator 3 that do not have faults unable to be fully utilized, based on the above problem, the present application connects the insulating main body 33 and the insulating shed 31 through the detachable screws 32, and when any one of the insulating main body 33 or the insulating shed 31 is damaged, only the damaged part needs to be replaced through the detachable screws 32, which can greatly reduce the cost of the regular maintenance of the device.
The insulator further comprises an insulating auxiliary body 321 arranged at the lower end of the insulating main body 33, and the insulating main body 33 is connected with the insulating auxiliary body 321 through a detachable screw 32.
Specifically, in the present embodiment, in consideration of the problem that the insulator 3 cannot be operated as a whole when the insulating main body 33 fails, the auxiliary insulating body 321 is provided at the lower end of the insulating main body 33, and when the insulating main body 33 is damaged, the auxiliary insulating body 321 may continue to operate in place of the insulating main body 33.
Preferably, the extension steel frame 11 is a W-shaped structure, the lightning arrester 2 and the insulator 3 are respectively located at the bottom end of the intersection point of the two sides of the W-shaped structure, and the lightning receptor 4 is located at the top end of the central intersection point of the W-shaped structure.
Specifically, in this embodiment, the extension steel frame 11 is configured as the W-shaped structure, and the lightning arrester 2, the insulator 3 and the lightning receptor 4 are respectively disposed at three intersections of the W-shaped structure, so as to define the distance between each sub-component and the tower, and such a design may also make the extension steel frame 11 more rigid.
Preferably, the lightning receptor 4 comprises:
a lightning receiving base 41, a fixed sleeve 42 and a lightning receiving rod 43;
the lightning receiving base 41 is connected with the extension steel frame 11;
the fixing sleeve 42 is a hollow columnar structure, one end of the fixing sleeve 42 is connected with the lightning receiving base 41, and the other end of the fixing sleeve 42 has a preset length along the direction far away from the lightning receiving base 41;
Specifically, in this embodiment, consider that the firm degree of the structure of lightning receptor 4 is relatively poor, and lightning rod 43 directly with lightning rod 41 connects and very easily appears the condition that lightning rod 43 breaks, consequently lightning rod 41 with on lightning rod 43's the basis connect mountain base 41 with set up between lightning rod 43 fixing sleeve 42, the connection method be will fixing sleeve 42 bottom with lightning rod 41 top is connected, will lightning rod 43 welds the condition that the rupture appears in fixing sleeve 42's cavity bottom, improvement lightning rod 43 that can be very big because of ageing corruption scheduling problem.
Preferably, the lightning receptor 4 further comprises:
a ground lead 44 and a lightning conductor hook 45;
one end of the grounding lead 44 is connected with the lightning receiving base 41, and the other end is connected with the lightning conductor hook 45.
Specifically, in this embodiment, the ground lead 44 is used for connecting a lightning conductor hook 45, and the lightning conductor hook 45 is used for connecting a lightning conductor outside the device, wherein the ground lead 44 is freely retractable to meet the difference in distance between the lightning conductor and the high-voltage transmission line, and can also ensure the safe distance between the lightning conductor and the high-voltage transmission line, thereby avoiding damage to the line body when the device works; it should be noted that, in this embodiment, the lightning conductor hook 45 is designed in a hook shape, but the lightning conductor hook 45 only needs to be designed in a hook shape to meet the requirement of connecting and fixing a lightning conductor, that is, the lightning conductor hook is not only designed in a hook shape to meet the requirement of connecting and fixing a lightning conductor.
Fig. 3 is a schematic front view of a lightning conductor hook in the integrated lightning protection device, and fig. 4 is a schematic cross-sectional view of the lightning conductor hook in the integrated lightning protection device.
As can be seen from fig. 3 and 4, the lightning conductor hook 45 according to the present application includes:
a first hooking arm 451 and a second hooking arm 452;
the first hook arm 451 and the second hook arm 452 are semi-circular structures, and the first hook arm 451 and the second hook arm 452 are connected in a sliding manner to form a circular structure with an opening.
Specifically, in this embodiment, the lightning conductor hook 45 is designed to be slidably connected between the first hook arm 451 and the second hook arm 452, so that the size of the central hole of the lightning conductor hook 45 can be adjusted, and the lightning conductor can be fixed by the lightning conductor hook 45 more conveniently.
Preferably, a fixing head 453 is arranged at one end of the first hook arm 451, which is far away from the grounding lead 44;
a fixing opening 454 corresponding to the fixing head 453 is formed at one end, away from the grounding lead 44, of the second hook arm 452;
the fixing head 453 and the fixing hole 454 are provided with bolt holes through which the fixing head 453 and the fixing hole 454 are fixed when the fixing head 453 is slidably inserted into the fixing hole 454.
Specifically, in the present embodiment, considering that the lightning conductor is fixed only by adjusting the center circular hole of the lightning conductor hook 45, and the lightning conductor hook 45 may still be loosened, the first hook arm 451 is provided with a fixing head 453, the second hook arm 452 is provided with a corresponding fixing opening 454, and the fixing head 453 and the fixing opening 454 are provided with bolt holes; wherein, when the size of the lightning conductor is moderate, the fixing head 453 and the fixing opening 454 can be nested together and fixed by bolts, and when the size of the lightning conductor is slightly larger, the lightning conductor can be fixed by a string passing through the fixing head 453 and the fixing opening 454.
Preferably, the first hooking arm 451 and the second hooking arm 452 are provided with built-in slideways, and the first hooking arm 451 and the second hooking arm 452 are connected by a bolt penetrating the slideways.
Specifically, in this embodiment, the embedded slideways are disposed on the first hook arm 451 and the second hook arm 452, so that the non-parallel twisting can be prevented, and the stability of the first hook arm 451 and the second hook arm 452 during adjustment can be effectively improved.
Claims (8)
1. An integrated lightning protection device, characterized in that it comprises:
the steel frame structure comprises a cross arm steel frame (1), wherein one side of the cross arm steel frame (1) is connected with an extension steel frame (11), and the extension steel frame (11) extends along the horizontal direction far away from the cross arm steel frame (1);
the top ends of the lightning arrester (2) and the insulator (3) are respectively connected with the epitaxial steel frame (11);
the comprehensive lightning protection device further comprises a lightning receptor (4) arranged at the top end of the extension steel frame (11).
2. An integrated lightning protection device according to claim 1, characterized in that said insulator (3) comprises:
an insulating shed (31) connected with the extension steel frame (11);
the insulation umbrella skirt (31) is arranged on the insulation main body (33) at the lower end of the insulation umbrella skirt (31), and the insulation umbrella skirt (31) is connected with the insulation main body (33) through a detachable screw (32);
the insulator further comprises an insulating auxiliary body (321) arranged at the lower end of the insulating main body (33), and the insulating main body (33) is connected with the insulating auxiliary body (321) through a detachable screw (32).
3. An integrated lightning protection device according to claim 1, characterized in that the extension steel frame (11) is a W-shaped structure, the lightning arrester (2) and the insulator (3) are respectively located at the bottom end of the intersection point of the two sides of the W-shaped structure, and the lightning receptor (4) is located at the top end of the intersection point of the center of the W-shaped structure.
4. An integrated lightning protection device according to claim 1, characterized in that the lightning receptor (4) comprises:
a lightning receiving base (41), a fixed sleeve (42) and a lightning receiving rod (43);
the lightning receiving base (41) is connected with the epitaxial steel frame (11);
the fixing sleeve (42) is of a hollow columnar structure, one end of the fixing sleeve (42) is connected with the lightning receiving base (41), and the other end of the fixing sleeve (42) is provided with a preset length along the direction far away from the lightning receiving base (41);
connect dodge pole (43) to be needle-like structure, connect dodge pole (43) one end with fixed sleeve (42) cavity bottom is connected, connect dodge pole (43) other end along keeping away from fixed sleeve (42) direction extension.
5. An integrated lightning protection device according to claim 4, characterized in that the lightning receptor (4) further comprises:
a grounding lead (44) and a lightning conductor hook (45);
and one end of the grounding lead (44) is connected with the lightning receiving base (41), and the other end of the grounding lead is connected with the lightning conductor hook (45).
6. An integrated lightning protection device according to claim 5, characterized in that the lightning conductor hook (45) comprises a first hook arm (451) and a second hook arm (452);
the first hook arm (451) and the second hook arm (452) are of semicircular ring structures, and the first hook arm (451) and the second hook arm (452) are connected in a sliding mode to form a circular ring structure with an opening.
7. The comprehensive lightning protection device according to claim 6, characterized in that the first hooking arm (451) is provided with a fixing head (453) at the end far away from the grounding lead (44);
one end, far away from the grounding lead (44), of the second hook arm (452) is provided with a fixing opening (454) corresponding to the fixing head (453);
the fixing head (453) and the fixing opening (454) are provided with bolt holes through which the fixing head (453) and the fixing opening (454) are fixed when the fixing head (453) is slidably fitted into the fixing opening (454).
8. An integrated lightning protection device according to claim 7, characterized in that the first hook arm (451) and the second hook arm (452) are provided with built-in slideways, and the first hook arm (451) and the second hook arm (452) are connected through the slideways by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222207567.9U CN218386724U (en) | 2022-08-22 | 2022-08-22 | Comprehensive lightning protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222207567.9U CN218386724U (en) | 2022-08-22 | 2022-08-22 | Comprehensive lightning protection device |
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| CN218386724U true CN218386724U (en) | 2023-01-24 |
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| CN202222207567.9U Active CN218386724U (en) | 2022-08-22 | 2022-08-22 | Comprehensive lightning protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118025487A (en) * | 2024-04-12 | 2024-05-14 | 西安爱邦电磁技术有限责任公司 | Lightning protection lightning receiving equipment for multi-rotor unmanned aerial vehicle |
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2022
- 2022-08-22 CN CN202222207567.9U patent/CN218386724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118025487A (en) * | 2024-04-12 | 2024-05-14 | 西安爱邦电磁技术有限责任公司 | Lightning protection lightning receiving equipment for multi-rotor unmanned aerial vehicle |
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