72 results about "Lightning protection system" patented technology

The invention provides a fan blade lightning protection conduction testing method and system based on machine learning, and relates to the technical field of lightning protection conduction testing, and the method comprises the steps: carrying out the current testing of a fan blade lightning protection system through a multi-channel MOS tube control circuit; performing multi-dimensional feature extraction and local feature analysis on the current response data; carrying out feature enhancement and defect identification based on the local feature sequence, and carrying out multistage clustering on an identification result; and performing global health analysis and defect traceability of lightning protection conduction performance on the fan blade lightning protection system according to a defect classification result, generating a defect attribution point location for monitoring, performing feedback optimization on a multi-channel MOS tube control circuit, and constructing a test optimization closed loop. According to the invention, the technical problem that the lightning protection conduction test efficiency is low due to the fact that the static conduction test is difficult to identify early hidden defects in the prior art is solved, the current test is carried out through the multi-channel MOS tube control circuit, and the lightning protection conduction test efficiency is improved.

The utility model relates to the field of blade lightning protection systems, and particularly discloses a novel blade lightning protection system grounding metal net connecting structure which comprises a main metal net laid on the surface of a blade, a grounding structure metal net attached to the main metal net, a grounding structure metal plate arranged on one side of the grounding structure metal net and a lightning arrester. The grounding structure metal plate is of a thin plate structure and comprises a first metal plate body and a second metal plate body, the first metal plate body and the second metal plate body are located on the two sides of the grounding structure metal net respectively, and the first metal plate body and the second metal plate body are oppositely arranged. The lightning arrester sequentially penetrates through the first metal plate, the grounding structure metal net and the second metal plate.

An insulated blade tip (11) for a lightning protection system in a wind turbine blade (5) is described. The described insulated blade tip (11) comprises: an electrically conductive receiver unit (12) having an outer portion (121) and an inner portion (122), where the outer portion (121) forms a lightning receiver; a lightning protection cable (13) electrically connected to the inner portion (122) and configured for connection to an insulated cable in order to conduct lightning from the insulated blade tip (11) to a blade root of the wind turbine blade (5); an electrically insulating block (14) having an inner cavity (16) in which the inner portion (122) and the lightning protection cable (13) are placed. The outer portion (121) is arranged at a first outer surface (1411) of the electrically insulating block (14). Furthermore, a space (19) between (i) the inner portion (122) and / or the lightning protection cable (13) and (ii) the inner surface (171, 181) of the cavity (16) is at least partially filled with a resin (20). Furthermore, a method for producing such an insulated blade tip (11) and a wind turbine blade (5) with such an insulated blade tip (11) and a wind turbine (1) are described.

The invention discloses a lightning protection intelligent online monitoring system and method based on multi-source information fusion, and relates to the technical field of lightning protection. The system adopts a three-layer architecture of an equipment layer, a communication layer and an application layer. The equipment layer comprises a lightning early warning device, a lightning current monitoring device, an SPD intelligent monitoring device and a grounding performance monitoring device, and is used for comprehensively collecting data. And the communication layer realizes data protocol conversion and security encryption transmission through an intelligent gateway. And the application layer platform adopts a multi-source data fusion analysis model and a dynamic risk assessment algorithm to realize three-level lightning early warning and predictive maintenance of the health state of the lightning protection facility. The problems that traditional lightning protection monitoring is isolated, lagged and inaccurate are solved, omnibearing and intelligent online monitoring and active safety early warning of a lightning protection system are achieved, and the system is particularly suitable for complex industrial scenes with extremely high safety requirements.

The utility model discloses a detection equipment of building lightning protection device, include: protection box, its inside is provided with lifting assembly, equipotential tester main part, it is fixedly arranged in the protection box inside, and is connected with lifting assembly, and equipotential test is carried out to building lightning protection device, the drive source of lifting assembly is arranged as drive motor, drive motor is connected with two -way screw rod through sprocket chain transmission, the end portion threaded sleeve of two -way screw rod is connected with mobile connecting seat, the top of mobile connecting seat is provided with electric telescopic handle, and the telescopic end top of electric telescopic handle is provided with fixed connecting seat. The utility model discloses through the protection of electric connection plug -in cylinder to the protection, through the protection of plug, protects the connection plug, reduces the possibility that electric connection plug -in cylinder and connection plug are influenced by outside environment, reduces the possibility that dust in air attacks electric connection plug -in cylinder.

The invention provides a wind turbine comprising a lightning protection system for providing an electrically conductive path suitable for conducting lightning from the rotor to an electrical ground. The lightning protection system comprises a shroud electrically coupled to a wind turbine bearing housing and a front end of a wind turbine hub and / or main shaft. The shroud forms part of the electrically conductive path to electrically couple the wind turbine rotor to the bearing housing via a short circuit path that bypasses the bearing arrangement.

The invention discloses a connecting method for a photovoltaic lightning protection system and a support. The connecting method comprises the connecting process that a pipe clamp is constructed to clamp a steel pipe pile to serve as stress supporting stability of an inclined rod. The elastic arch spring piece and the middle plate on the inner side of the elastic arch spring piece are filled in the interval space h between the inner sides of the pipe clamp petals A and the pipe clamp petals B, so that the opposite tensioning stress of the bolt and nut fastening assembly on the pipe clamp petals A and the pipe clamp petals B is stable, the stress supporting stability of a steel pipe pile clamped by the pipe clamps as an inclined rod is guaranteed, and the problem that the interval space h exists between the pipe clamps is solved. And the stress supporting stability of the pipe clamp for clamping the steel pipe pile as an inclined rod is influenced.

A method for providing a conductive connection point of a lightning protection system of a wind turbine blade to an expanded foil or mesh that may be configured as a down conductor extending from a tip connection block towards a root connection block, with a plurality of conductive connection points electrically connected therewith. One method embodiment includes melting a conductive material, applying the melted conductive material in a liquid state for surrounding the expanded foil or mesh, and allowing the melted conductive material to harden for providing a mechanical and electric conductive connection between the conductive connection point and the expanded foil or mesh. Another method embodiment includes providing at least two discs made of conductive material, arranging the discs on opposite sides of the expanded foil or mesh, and fastening the discs to each other with the expanded foil or mesh therebetween for providing an electric conductive connection.

The invention discloses a debris flow monitoring and protecting device based on a high-frequency radar, and relates to the technical field of debris flow monitoring based on the high-frequency radar. The adjusting unit comprises a supporting rod, a hoop clamp, a connecting arm, a holder support and a storage module. The lightning protection unit comprises an insulation assembly, a conductive disc, an installation assembly and a lightning guiding assembly. According to the device, structural follow-up shielding is formed under the arrangement of the lightning protection unit and the adjusting unit. The cage-shaped skeleton structure of the lightning rod can move synchronously along with the movement of the radar, so that the lightning rod is ensured to be the highest point in any working posture, continuous and all-around dynamic lightning protection is provided for the high-frequency radar, and the problem of direct lightning protection of movable equipment is solved fundamentally. The lightning protection system not only provides a direct lightning discharge main channel, but also provides a preset discharge path for electric charges induced by the radar shell through the current-conducting plate, so that an internal circuit is prevented from being damaged.

The invention provides a lightning protection grounding system of a prefabricated cabin transformer substation, which is characterized in that a station area of the prefabricated cabin transformer substation is provided with a support rod and is provided with a lightning conductor, and the lightning conductor is connected with an independent concentrated grounding device through a down lead to construct a direct lightning protection system covering the whole station area, so that lightning stroke is effectively intercepted, and lightning current is led into the grounding system; and the risk that the cabin body and equipment are directly thunder is reduced. A main grounding network is arranged under the ground of a station area to form a three-dimensional grounding network with multipath current diffusion, so that the overall grounding resistance is effectively reduced, the potential difference between cabins is balanced, and dangerous step voltage and contact voltage are inhibited. A deep grounding electrode is arranged on the periphery of the main grounding grid, and an auxiliary current diffusion channel is formed by combining an external grounding body of a tunnel outside a station and a grounding electrode along the line, so that the discharge capacity of lightning current and short-circuit current is improved, and the current sharing performance and the safety redundancy of the system are enhanced. Through the synergistic effect of the lightning conductor and the main grounding grid, the lightning protection and electromagnetic safety performance of the prefabricated cabin transformer substation in a complex urban electromagnetic environment is remarkably improved.

The invention relates to the technical field of lightning protection systems, in particular to a lightning protection system for house construction, which comprises at least one group of lightning receiving units, each group of lightning receiving units comprises a lightning receiving rod, a connecting seat and a mounting seat, the mounting seat is used as a fixing reference, the connecting seat is fixedly mounted at the upper end of the mounting seat, and a plurality of plugging ports are formed in the connecting seat; the adjacent lightning receiving units can be connected through the plugging ports, and the lightning receiving rods are installed on the connecting seats. The grounding unit is used for grounding thunder and lightning; one end of the downlead is connected with the lightning arresting unit, and the other end of the downlead is connected with the grounding unit; the lightning arresting rod comprises a lightning guiding end located at the upper end, a fixed end connected with the mounting base and an insulating ring connected with the lightning guiding end and the fixed end, a sliding groove is concavely formed in the lower end face of the lightning guiding end, a connecting protrusion protrudes out of the upper end face of the fixed end, the insulating ring surrounds the connecting protrusion, and a conductive block is arranged in the sliding groove in a sliding mode; the device has the effects of plug-in expansion and fault self-isolation cut-off.

The utility model relates to an outdoor passive lightning stroke counter, which adopts a double-layer shell, an outer layer adopts a non-metal waterproof box with a transparent cover, the waterproof grade reaches more than IP65 protection grade, extreme weather is adapted, an inner layer adopts a metal shielding box, a calendar unit provides dates and time, and the counter is convenient to use. The central processing unit can record the date and time of lightning stroke occurrence, and the communication unit can send the collected lightning stroke data (the number of lightning stroke times and the lightning stroke time) to a background monitoring system or a communication module and an upper computer system, thereby achieving the functions of remote monitoring and background checking. Power is supplied through the internal battery pack, an external power supply is not needed, the maintenance frequency is reduced, and the device is suitable for external lightning protection system downleads, railways, communication base stations and other multi-element scenes.

A method of manufacturing a lightning protection system for a wind turbine blade, the method comprising: providing a first metal layer; and constructing a metal reinforcing part directly onto the first metal layer using an additive manufacturing technique so as to create an electrical connection between the first metal layer and the metal reinforcing part, wherein a portion of the first metal layer extends laterally beyond the metal reinforcing part.

The invention provides a lightning protection system of a high lifting rotating structure, which comprises a lightning arrester, an upper end down lead, a lightning discharge ring, a rotating structure, a cable storage device, a lifting mechanism, a lower end down lead and a grounding device, the rotating structure is connected with the lifting mechanism, the lightning arrester is connected with the rotating structure, and the cable storage device is connected with the lightning arrester. The lightning arrester is electrically connected with the lightning discharge ring through the upper-end downlead, the lightning discharge ring is installed in the rotating structure, the two ends of the lower-end downlead are electrically connected with the lightning discharge ring and the grounding device respectively, and the middle of the lower-end downlead is arranged in the cable storage device.

The invention discloses a three-dimensional protection envelope generation method for an ancient building lightning receiving system, and belongs to the technical field of building lightning protection. According to the method, a finite element discretization thought and a constrained Delaunay triangulation technology are adopted, and a lightning receiving system is decomposed into three types of basic units including a lightning receiving needle, a linear segment lightning receiving belt and an effective lightning receiving surface; a three-dimensional protection range of each unit is accurately calculated, a continuous integral protection range without splicing gaps is synthesized through Boolean union operation, then the integral protection range is compared with a key part of a roof, and when a blind area exists, the layout of the lightning arrester is automatically adjusted, and iterative optimization is carried out. According to the method, high-precision and automatic calculation of the three-dimensional space protection range of the complex lightning receiving system of the ancient building is achieved, adaptability is high, efficiency is high, it can be ensured that no protection blind area exists in the whole roof area, and reliable technical support is provided for the lightning protection optimization design of the ancient building.

To provide assemblies, systems, and methods of lightning strike protection for aircraft composite structures.SOLUTION: The lightning strike protection material assembly 10 includes a lightning strike expanded metal foil layer 16 having a lightning strike expanded metal foil 18 and a resin-infused scrim layer having a non-metallic scrim infused with an infusion resin 45 having a tailored viscosity and a tailored cure profile. The lightning strike protection assembly 10 is configured to be laid up on and co-cured with an uncured composite laminate assembly having a plurality of structural ply layers pre-impregnated with a structural resin. The structural resin has a structural resin viscosity and a structural resin cure profile that are different from the tailored viscosity and the tailored cure profile, thereby preventing intermixing of the structural resin and the infusion resin during co-curing and allowing the infusion resin to effectively encapsulate the lightning strike expanded metal foil 18 and form a cured lightning strike protected composite structure 80 capable of achieving a defined resin boundary.SELECTED DRAWING: Figure 2D

A variable-pitch turbine blade assembly (1) for an aircraft turbomachine, the assembly comprising a rotor (2) movably mounted about a radial axis (X) of the turbomachine, a stator (3) fixed about the radial axis (X), and at least one lightning recovery system (4). The lightning recovery system (4) comprises an electrically conductive bar (7) having an upper face fixed to the rotor (2) and a lower face, an assembly of electrically conductive fibers (8) fixed to said lower surface of the conductive bar (7), and a means (9) for attaching said lightning recovery system (4) to the rotor (2). Figure for the abstract: Fig 1

This application relates to the field of lightning protection technology, providing a surge protector monitoring method, electronic device, and storage medium applied to a server. The method includes: receiving operational data from each surge protector in a lightning protection system; if the operational data of any surge protector meets preset fault conditions, acquiring the specification information of that surge protector and the target lightning information corresponding to the moment the fault conditions are met; determining target replacement information for the lightning protection system based on the specification information and the target lightning information; generating a replacement instruction corresponding to the target replacement information and sending the replacement instruction to a monitoring terminal in the lightning protection system. Through the method provided in this embodiment, the server can automatically determine whether a surge protector has malfunctioned and identify the target replacement information of the malfunctioning surge protector based on operational data. The server can then control the lightning protection system to automatically replace the surge protector according to the target replacement information via the replacement instruction, eliminating the need for manual inspection and reducing maintenance costs while improving maintenance efficiency.

A rotor blade assembly includes a first blade segment and a second blade segment extending in opposite directions from a chord-wise joint. Each of the first and second blade segments includes at least one shell member defining an airfoil surface and an internal support structure. The internal support structure of the first blade segment includes a beam structure extending lengthwise that structurally connects with the internal support structure of the second blade segment via a receiving section. The rotor blade assembly also includes a lightning protection system having a first conductive cage integrated with the beam structure and a second conductive cage integrated with the receiving section and electrically connected to the first conductive cage via an electrical connection. Further, the first and second conductive cages are grounded.

The invention discloses a high-grade power supply lightning protection system based on a YOLO model. The high-grade power supply lightning protection system comprises an image acquisition module, an active lightning protection module, a passive lightning protection module and a control module, wherein the image acquisition module acquires thunder and lightning images and transmits the images to the active protection module; the active protection module analyzes the thunder and lightning images based on a YOLO model, identifies thunderstorm cloud, gives an early warning, and sends a signal to the control module; the passive protection module receives an instruction of the control module, and limits overvoltage and discharges overcurrent through a B5-grade lightning protection circuit; the control module is used for coordinating work of all the modules. The invention also discloses a method for lightning protection by using the system. According to the lightning protection system, active early warning and passive protection are combined, the high-grade protection requirement is met, and the early warning accuracy is high.

The present invention relates to a rotor blade (1) for a wind turbine (2), the rotor blade (1) comprising a first down conductor (6), extending from a tip section (3) to a root section (4), wherein the first down conductor (6) is electrically coupled with a root block (7) of the root section (4), wherein the root block (7) is electrically coupled with a second down conductor (8). The second down connector (8) is electrically coupled with a current distribution plate (9), wherein the current distribution plate (9) is attached to a fixation device (10) for fixing the rotor blade (1) to a first bearing ring (11a) of a bearing (11) of a hub (12). The invention also relates to a wind turbine (2) and to a method for assembling a rotor blade (1) to a hub (12) of a wind turbine (2) and establishing a conductive path between a first down connector (6) of the rotor blade (1) and the hub (12).

The invention relates to a variable-pitch blade assembly (1) for a turbine engine of an aircraft, the assembly comprising a rotor (2) which is movable relative to a radial axis (X) of the turbine engine; a stator (3) which is stationary relative to the radial axis (X); and at least one lightning recovery system (4). The lightning recovery system (4) comprises an electrically conductive bar (7) comprising an upper face attached to the rotor (2) and a lower face, a set of electrically conductive fibers (8) attached to the lower surface of the conductive bar (7), and a means (9) for attaching the lightning recovery system (4) to the rotor (2).

The invention provides an offshore floating photovoltaic power station lightning protection system and a construction method thereof, and relates to the technical field of photovoltaic power generation lightning protection, and the system comprises a lightning receiving protection device which is installed at the top of a photovoltaic power station and is used for guiding lightning current; the leading-down system is used for leading the lightning current into the grounding device; the grounding device comprises a ground screen and a vertical grounding electrode which are arranged around the floating body channel, and the vertical grounding electrode is made of an anti-corrosion material and extends downwards from the ground screen to be driven into the seabed; the electromagnetic shielding device is installed in the photovoltaic power station and used for reducing transmission of lightning stroke charges; and the real-time monitoring device comprises thunderstorm early warning equipment, grounding resistance testing equipment and induced voltage monitoring equipment, and is used for dynamically monitoring lightning stroke events and triggering maintenance instructions, so that the technical problems of poor durability and low reliability of the lightning protection system of the ocean floating photovoltaic power station are solved, and the effects of improving the operation safety, stability and maintainability of the lightning protection system are achieved.

A kind of construction method of antique building lightning protection device, comprising the following steps: S1, leading out base plate;S2, down conductor utilizes frame structure column main reinforcement electric welding to form good conductor, while setting test connecting plate;S3, lightning arrester is electrically welded with the main reinforcement of nearby structure beam forming horizontal lightning arrester;S4, roof two places, adopt hot-dip galvanizing round steel, one end is welded with female wall coping plate inner reinforcement, the other end leads out roof panel;S5, when local equipotential bonding box and total equipotential bonding box are buried during brick masonry construction, then hot-dip galvanizing flat steel and copper wire that have been led out from base plate are connected to total equipotential terminal box and local equipotential terminal box;S6, install lightning arrester belt support;S7, lightning arrester belt is along the ridge of building roof conformal laying;S8, carry out lightning protection test, the application can guarantee the overall appearance of antique building while protecting down conductor, and also takes into account the concealment of lightning protection system, prevent the occurrence of safety accident.

The utility model discloses a kind of parapet lightning protection systems of fabricated building, comprising: parapet wall, its wall is embedded in lightning protection connecting plate and parapet connecting piece, the outer side surface of lightning protection connecting plate leaks the outer wall surface of the parapet wall, lightning protection connecting plate and parapet connecting piece are conducted through;Roof layer, including roof prefabricated floor and steel column supported with roof prefabricated floor connection, parapet connecting screw rod and reserved reinforcement are embedded in roof prefabricated floor, the parapet connecting screw rod is fixedly connected with parapet connecting piece, the parapet connecting screw rod and reserved reinforcement between, and reserved reinforcement and steel column between respectively conducted through.The utility model discloses a kind of parapet lightning protection systems of fabricated building, while parapet assembly, realize the conduction between the lightning protection connecting plate of parapet and steel column, complete parapet lightning protection system construction, do not need to carry out lightning protection component pre-buried pouring in construction site, simplify field construction technology, and more reliable.

A wind turbine blade having a blade shell with a lightning protection system. The lightning protection system includes a first metal layer, a metal plate configured to electrically connect to one or more electrical components, and a plurality of metal rods secured to the metal plate and arranged to extend therefrom. The plurality of metal rods extend over and contact the first metal layer such that the first metal layer is electrically connected to the metal plate via the plurality of metal rods.

A wind turbine blade includes a lightning protection system at least partially disposed in an inner portion of the blade. The lightning protection system includes a down conductor cable having a root and a tip, the root and tip being insulators with different electrical breakdown voltages. The lightning protection system may include: a down conductor cable portion and support members to hold the cable portion in free space near or on the ridge of the airfoil section of the blade, such that the cable portion is spaced apart from at least one conductive structural member; and / or multiple inner down conductor cables and radiating electrical connectors.

Weighting base (1) for weighting a rod-shaped component (2) of a lightning protection system on a flat roof, wherein the weighting base (1) - a lower surface facing the flat roof in the operating position (3), - one of these opposite upper surfaces (4), - an outer surface (5) and - a passage hole extending from the upper to the lower surface (3, 4) for the rod-shaped component (2), characterized in that the passage hole is designed as a passage slot (6) open on one side at the outer surface (5) when viewed from above the upper surface (4) of the ballast base (1), which has a passage opening (7) for the rod-shaped component (2) at its outer slot end interrupting the outer surface (5) and is closed at its inner slot end (8) away from the passage opening (7), and that the upper surface (4) of the ballast base (1) has a step (18) spaced apart from the inner slot end (8) on at least one of its edges (17) adjoining the passage slot (6) and extending from the inner slot end (8) to the outer slot end,at which the distance (a) between the upper surface (4) of the ballast base (1) and the plane spanned by the lower surface (3) of the ballast base (1) in the longitudinal direction of the passage slot (6) towards the passage opening (7) increases such that it is greater than the corresponding distance (b) that the upper surface (3) at the inner end (8) of the slot has to this plane.