Lightning protection structure and assembly type steel structure transformer substation

Abstract

The utility model provides a lightning protection structure and an assembly type steel structure transformer substation, and solves the problems that the lightning protection structure of the assembly type steel structure transformer substation has potential safety hazards and is complex in structure and high in cost. The lightning protection structure comprises a metal coping, a flexible conductor connecting piece and a downlead assembly, and the metal coping is fixed to the top of an outer wall and used for intercepting lightning current; the number of the metal pressing tops is more than two, the flexible conductor connecting pieces are arranged in a deformable mode under the action of external force, the adjacent metal pressing tops are fixedly connected through the flexible conductor connecting pieces, and therefore all the metal pressing tops are electrically connected. The downlead assembly is fixed on the inner side of the outer wall, the upper end of the downlead assembly is fixed on at least one metal coping, and the lower end of the downlead assembly is electrically connected with the grounding device; the metal coping at the top of the outer wall serves as a lightning arrester to intercept lightning current, all the metal coping are connected through the flexible conductor connecting piece, all the metal coping are electrically connected with the grounding device through the down lead assembly, and the safety performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a lightning protection structure and a prefabricated steel structure substation. Background Technology

[0002] Prefabricated construction refers to a construction method where, before the construction phase begins, manufacturers transfer much of the traditional on-site work to a factory. According to national standards and design requirements, prefabricated building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are manufactured in the factory. These components are then transported to a specific location, where specialized workers assemble them using reliable connection methods, combining them with other on-site construction work to form a complete prefabricated building system. Prefabricated steel structure substations, as a new type of building, have broad application prospects in power system construction. Compared with traditional reinforced concrete cast-in-place substations, prefabricated steel structure substations have the advantages of high construction efficiency, short construction period, and immediate delivery after construction.

[0003] In the lightning protection structure of a prefabricated steel structure substation, the lightning arrester is a key component used to directly intercept lightning strikes and divert the current to the grounding device. Its core function is to ensure the safe discharge of lightning energy and protect the substation equipment and personnel through reasonable layout and material selection.

[0004] In existing technologies, prefabricated steel structure substations typically install lightning protection strips or lightning rods as lightning arresters at locations susceptible to lightning strikes, such as roof ridges and eaves.

[0005] The applicant has discovered at least the following technical problems in the prior art: setting up lightning protection strips or lightning rods as lightning arresters in areas susceptible to lightning strikes is complex and costly, and cannot guarantee that all parts of the substation roof can intercept lightning strikes and introduce their current into the grounding device, which poses a safety hazard. Utility Model Content

[0006] The purpose of this utility model is to provide a lightning protection structure and a prefabricated steel structure substation to solve the technical problems of safety hazards, complex structure and high cost of the lightning protection structure of the prefabricated steel structure substation in the prior art; the various technical effects of the preferred technical solution among the many technical solutions provided by this utility model are described in detail below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The lightning protection structure provided by this utility model includes a metal capping, a flexible conductor connector, and a down conductor assembly, wherein:

[0009] The metal capping is fixed to the top of the exterior wall to intercept lightning current; there are two or more metal cappings; the flexible conductor connector is deformable under external force; the flexible conductor connector fixes adjacent metal cappings together, thereby electrically connecting all the metal cappings.

[0010] The down conductor assembly is fixed to the inner side of the outer wall, the upper end of the down conductor assembly is fixed to at least one of the metal capping pieces, and the lower end of the down conductor assembly is fixed to and electrically connected to the grounding device.

[0011] Preferably, there is a gap between the metal caps, and the flexible conductor connector spans the gap and is fixedly connected to two adjacent metal caps, and the flexible conductor connector is bent or folded at the position corresponding to the gap.

[0012] Preferably, the flexible conductor connector includes a flexible conductor connecting strip and a first locking member, wherein the two ends of the flexible conductor connecting strip are respectively fixed to two adjacent metal pressure plates by the first locking member.

[0013] Preferably, the metal capping includes a bent portion that overlaps at the corner of the exterior wall and is fixedly connected to the exterior wall.

[0014] Preferably, the lead-out assembly includes a conductor plate and a clamping plate, wherein:

[0015] The bent portion includes a vertical section, and the conductor plate and the clamping plate respectively clamp the opposite sides of the vertical section;

[0016] The lightning protection structure also includes a second locking member, which passes through the conductor plate, the bent portion and the clamping plate in sequence, and fixes the three to the inside of the outer wall.

[0017] Preferably, the conductor plate comprises a hot-dip galvanized flat steel plate.

[0018] Preferably, the down conductor assembly further includes reinforcing bars inside the outer wall, which are fixedly connected to the conductor plate and electrically connected to the grounding device.

[0019] Preferably, the down conductor assembly further includes a steel column, which is fixed to the inner side of the exterior wall and supports the reinforcing bars in the floor slab. The steel column is fixedly connected to the reinforcing bars in the exterior wall.

[0020] Preferably, the lightning protection structure further includes a lightning protection grid, which is laid on the roof and fixedly connected to the down conductor assembly.

[0021] This utility model also provides a prefabricated steel structure substation, including an outer wall and the aforementioned lightning protection structure.

[0022] Compared with the prior art, the lightning protection structure and prefabricated steel structure substation provided by this utility model have the following advantages: the metal capping at the top of the exterior wall is used as a lightning rod to intercept lightning current. Flexible conductor connectors connect all the metal cappings, and all the metal cappings are electrically connected to the grounding device through the down conductor assembly. No matter where the lightning current strikes the exterior wall, it can be guided to the grounding device through the corresponding metal capping, thus improving safety performance. Moreover, this lightning protection structure does not require additional lightning protection strips or lightning rods, making the structure simple and reducing costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the lightning protection structure;

[0025] Figure 2 This is a side view of the flexible conductor connector that connects two adjacent metal clamps.

[0026] Figure 3 This is a top view schematic diagram of a flexible conductor connector that connects two adjacent metal pressure caps.

[0027] Figure 4 This is a side view of the connection point between the metal capping and the down conductor assembly;

[0028] Figure 5 This is a front view of the connection point between the metal capping and the down conductor assembly.

[0029] In the figure: 1. Metal capping; 11. Bending section; 2. Flexible conductor connector; 21. Flexible conductor connecting strip; 22. First locking element; 31. Conductor plate; 32. Clamping plate; 33. Second locking element; 34. Reinforcing steel bar inside the outer wall; 35. Steel column; 4. Reinforcing steel bar inside the floor slab; 5. Embedded plate; 6. Lightning grid. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] This utility model provides a lightning protection structure and a prefabricated steel structure substation, which eliminates the need for additional lightning protection strips or lightning rods, has a simple structure, and reduces costs.

[0034] The following is combined with Figures 1-5 The technical solution provided by this utility model will be described in more detail.

[0035] Example 1:

[0036] The lightning protection structure provided by this utility model includes a metal cap 1, a flexible conductor connector 2, and a down conductor assembly. The metal cap 1 is fixed to the top of the outer wall to intercept lightning current. There are two or more metal caps 1. The flexible conductor connector 2 is deformable under external force and fixes adjacent metal caps 1, thereby electrically connecting all metal caps 1. The down conductor assembly is fixed to the inner side of the outer wall. The upper end of the down conductor assembly is fixed to at least one of the metal caps 1, and the lower end of the down conductor assembly is electrically connected to the grounding device.

[0037] Among them, the lightning arrester is a metal conductor that directly withstands lightning strikes. It is installed on the top or side of a building or facility, forming a conductive path higher than the surrounding objects, and preferentially attracting lightning.

[0038] The lightning protection structure provided by this utility model uses the metal capping 1 at the top of the exterior wall as a lightning rod to intercept lightning current. The flexible conductor connector 2 connects all the metal capping 1, and all the metal capping 1 are electrically connected to the grounding device through the down conductor assembly. No matter where the lightning current strikes the exterior wall, it can be guided to the grounding device through the corresponding metal capping 1, which improves the safety performance. Moreover, this lightning protection structure does not require the installation of additional lightning protection strips or lightning rods, and the structure is simple and reduces costs.

[0039] As an optional implementation, see Figure 2 and Figure 3 As shown, there are gaps between the metal caps 1, and the flexible conductor connector 2 spans the gap and is fixedly connected to the two adjacent metal caps 1. The flexible conductor connector 2 is bent or folded at the position corresponding to the gap.

[0040] See Figure 2 As shown, in its natural state, the flexible conductor connector 2 is bent or folded at the position of the gap, which can adapt to the change in the gap between the metal caps 1 when thermally expanded and contracted, prevent the flexible conductor connector 2 from breaking, and ensure that all metal caps 1 are always electrically connected.

[0041] As an optional implementation, see Figure 2 and Figure 3 As shown, the flexible conductor connector 2 includes a flexible conductor connecting strip 21 and a first locking member 22. The two ends of the flexible conductor connecting strip 21 are respectively fixed to two adjacent metal pressure plates 1 by the first locking member 22.

[0042] The above structure ensures the stability of the connection between the flexible conductor connecting strip 21 and the metal capping 1. The first locking member 22 can be a bolt as used in the prior art.

[0043] As an optional implementation, see Figure 4 and Figure 5 As shown, the metal capping 1 includes a bent portion 11, which overlaps at the corner of the exterior wall and is fixedly connected to the exterior wall.

[0044] The structure of the aforementioned metal coping 1 can fit tightly against the top of the exterior wall, reducing the possibility of water seepage.

[0045] As an optional implementation, see Figure 1 , Figure 4 and Figure 5 As shown, the down conductor assembly includes a conductor plate 31 and a clamping plate 32, wherein: the bending part 11 includes a vertical section, and the conductor plate 31 and the clamping plate 32 respectively clamp the opposite sides of the vertical section; the lightning protection structure also includes a second locking member 33, which passes through the conductor plate 31, the bending part 11 and the clamping plate 32 in sequence, and fixes the three to the inside of the outer wall.

[0046] Specifically, the conductor plate 31 can be a hot-dip galvanized flat steel plate. The zinc layer forms a dense oxide film through oxidation, which isolates air and moisture and effectively prevents corrosion. The second locking member 33 can be a bolt. The conductor plate 31 and the clamping plate 32 clamp the conductor plate 31. The second locking member 33 passes through the conductor plate 31, the vertical section of the bend 11, and the clamping plate 32, fixing the conductor plate 31, the bend 11, and the clamping plate 32 to the inner side of the outer wall, thereby improving the stability of the structure.

[0047] As an optional implementation, see Figure 1 As shown, the down conductor assembly also includes an inner wall steel bar 34, which is fixedly connected to the conductor plate 31 and electrically connected to the grounding device.

[0048] See Figure 1 As shown, the down conductor assembly also includes a steel column 35, which is fixed to the inner side of the exterior wall and supports the reinforcing bars 4 in the floor slab. The steel column 35 is fixedly connected to the reinforcing bars 34 in the exterior wall.

[0049] Specifically, in this embodiment, the metal capping 1 and the conductor plate 31 are fixedly connected by the second locking member 33. The conductor plate 31 is welded to the steel reinforcement 34 inside the outer wall or fixedly connected by the embedded plate 5 inside the outer wall. The steel reinforcement 34 inside the outer wall extends downward until it is welded to the steel column 35. Thus, the lightning current received by the metal capping 1 is sequentially introduced into the grounding device through the conductor plate 31, the steel reinforcement 34 inside the outer wall, and the steel column 35. The grounding device introduces the lightning current into the ground, thereby improving the safety performance.

[0050] The grounding device can be an existing mature technology, which will not be elaborated here.

[0051] As an optional implementation, the steel column 35 is an I-shaped structure. This structure can stably support the steel reinforcement 4 inside the floor slab and conduct lightning current into the grounding device.

[0052] See Figure 1 As shown, the lightning protection structure of this embodiment also includes a lightning protection grid 6, which is laid on the roof and fixedly connected to the down conductor assembly.

[0053] The lightning protection grid 6 can withstand the lightning current on the roof. Specifically, the lightning protection grid 6 is electrically connected to the steel column 35 through the steel bar 4 inside the floor slab, and the lightning protection grid 6 introduces the lightning current into the grounding device through the steel column 35.

[0054] Example 2:

[0055] This embodiment provides a prefabricated steel structure substation, including an external wall and the aforementioned lightning protection structure.

[0056] The prefabricated steel structure substation in this embodiment, due to the aforementioned lightning protection structure, directly uses the metal capping 1 on the top of the outer wall as a lightning rod, without the need for additional lightning rods, etc., and can conduct the lightning current striking the metal capping 1 into the ground during thunderstorms, thereby improving the safety performance of the substation.

[0057] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A lightning protection structure, characterized in that, Includes a metal capping element, a flexible conductor connector, and a downlead assembly, wherein: The metal capping is fixed to the top of the exterior wall to intercept lightning current; there are two or more metal cappings; the flexible conductor connector is deformable under external force; the flexible conductor connector fixes adjacent metal cappings together, thereby electrically connecting all the metal cappings. The down conductor assembly is fixed to the inner side of the outer wall, the upper end of the down conductor assembly is fixed to at least one of the metal capping pieces, and the lower end of the down conductor assembly is electrically connected to the grounding device.

2. The lightning protection structure according to claim 1, characterized in that, There is a gap between the metal pressure caps, and the flexible conductor connector spans the gap and is fixedly connected to the two adjacent metal pressure caps. The flexible conductor connector is bent or folded in the position corresponding to the gap.

3. The lightning protection structure according to claim 1 or 2, characterized in that, The flexible conductor connector includes a flexible conductor connecting strip and a first locking member. The two ends of the flexible conductor connecting strip are respectively fixed to two adjacent metal pressure plates by the first locking member.

4. The lightning protection structure according to claim 1, characterized in that, The metal capping includes a bent portion that overlaps at the corner of the exterior wall and is fixedly connected to the exterior wall.

5. The lightning protection structure according to claim 4, characterized in that, The lead-out assembly includes a conductor plate and a clamping plate, wherein: The bent portion includes a vertical section, and the conductor plate and the clamping plate respectively clamp the opposite sides of the vertical section; The lightning protection structure also includes a second locking member, which passes through the conductor plate, the bent portion and the clamping plate in sequence, and fixes the three to the inside of the outer wall.

6. The lightning protection structure according to claim 5, characterized in that, The conductor plate includes a hot-dip galvanized flat steel plate.

7. The lightning protection structure according to claim 5, characterized in that, The down conductor assembly also includes reinforcing bars inside the outer wall, which are fixedly connected to the conductor plate and electrically connected to the grounding device.

8. The lightning protection structure according to claim 7, characterized in that, The down conductor assembly also includes a steel column, which is fixed to the inner side of the exterior wall and supports the reinforcing bars in the floor slab. The steel column is fixedly connected to the reinforcing bars in the exterior wall.

9. The lightning protection structure according to claim 1, characterized in that, The lightning protection structure also includes a lightning protection grid, which is laid on the roof and fixedly connected to the down conductor assembly.

10. A prefabricated steel structure substation, characterized in that, Includes the exterior wall and the lightning protection structure as described in any one of claims 1-9.

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