Lightning protection strain clamp

Abstract

The invention relates to the technical field of wire clamps, and discloses a lightning protection strain clamp, which comprises an arc-shaped shielding device, and the arc-shaped shielding device is installed on the wire clamp and is used for uniformly distributing lightning current and reducing discharge phenomena. The lightning current is led out through the bypass and point discharge principle, the design of the arc-shaped shielding device and the gap discharge device is adopted, the lightning current is effectively dispersed, the local current density is reduced, and the risk of wire fusing caused by lightning stroke is reduced; the arc-shaped design enables lightning current to be distributed on the wire more uniformly, the common problem of local overheating in a traditional wire clamp is avoided, the safety of the whole system is improved, when lightning overvoltage exceeds a certain value, the gap discharge device can form flashover between the puncture electrode and the grounding electrode, a short-circuit channel is established quickly, and the lightning protection effect is improved. The electric arc is burnt on the wire clamp and the overvoltage energy is released, so that the wire clamp and the wire are effectively prevented from being burnt.

Description

Technical Field

[0001] The invention relates to the technical field of wire clamps, and in particular to a lightning protection tension wire clamp. Background Art

[0002] The transmission line disconnection accident is an urgent and influential defect in the operation and maintenance of transmission lines. After analyzing and summarizing the disconnection points of a large number of transmission line lightning disconnection accidents, we found that when most transmission lines are disconnected due to lightning strikes, most of the breakpoints are at the wire clamps of the towers (such as the suspension wire clamps of overhead ground wires, the suspension wire clamps of overhead conductors, the tension wire clamps, and the shock-absorbing hammer positions, etc.). When lightning strikes the lightning conductor near the tower, most of the current flows into the nearby tower. It and the pipe are in a place where a large current flows through the lightning conductor and the wire clamp, resulting in fusing at the wire clamp outlet. This problem has become a common problem of transmission lines and is also a problem that the transmission profession urgently needs to solve. Summary of the invention

[0003] In view of the above-mentioned problems existing in the existing lightning protection tension clamp, the present invention is proposed.

[0004] Therefore, the purpose of the present invention is to provide a lightning protection tension clamp, which aims to provide a lightning protection tension clamp that can enhance the lightning current resistance of the conductor at the clamp, prevent line power failures caused by lightning strikes, improve reliability indicators, and reduce the number of line failures.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A lightning protection tension clamp comprises an arc-shaped shielding device, which is installed on the clamp to evenly distribute lightning current and reduce discharge.

[0006] As a preferred solution of the lightning protection tension clamp described in the present invention, it also includes a gap discharge device, which is arranged on one side of the arc shielding device and conducts lightning current through bypass and tip discharge principles.

[0007] As a preferred solution of the lightning protection tension clamp described in the present invention, two arc-shaped shielding devices are provided, and an insulator is installed between the two arc-shaped shielding devices.

[0008] As a preferred solution of the lightning protection tension clamp described in the present invention, the gap discharge device includes multiple puncture electrodes and grounding electrodes. When the lightning overvoltage exceeds a certain value, a flashover is formed between the puncture electrode and the grounding electrode, thereby establishing a short-circuit channel.

[0009] As a preferred solution of the lightning protection tension clamp described in the present invention, when the gap discharge device flashes, the arc burns on the gap discharge device to release overvoltage energy, thereby protecting the clamp and the conductor from burns.

[0010] As a preferred solution of the lightning protection tension clamp of the present invention, the clamp is suitable for 120-240mm 2 The whole is made of welding or casting, which is easy to install and will not damage the wire.

[0011] As a preferred solution of the lightning protection tension clamp of the present invention, the clamp can withstand a working environment temperature of -35°C to 40°C and is suitable for areas with an altitude of 1000 to 2000m.

[0012] As a preferred solution of the lightning protection tension clamp described in the present invention, the material of the clamp is aluminum alloy or stainless steel, and the weight of a single device does not exceed 7kg.

[0013] As a preferred solution of the lightning protection tension clamp described in the present invention, the gap discharge device forms an arc at the point where the electrodes are closest to each other, and the arc is quickly elongated and easily extinguished.

[0014] As a preferred solution of the lightning protection tension clamp described in the present invention, the arc-shaped shielding device is designed and processed from high-strength aluminum alloy material, and is used to protect overhead lines from direct lightning and induced lightning overvoltage hazards.

[0015] The beneficial effects of the present invention are as follows: by adopting the design of an arc-shaped shielding device and a gap discharge device, the lightning current is effectively dispersed, the local current density is reduced, and the risk of wire fusing due to lightning strikes is reduced. The arc-shaped design enables the lightning current to be more evenly distributed on the wire, avoiding the common local overheating problem in traditional wire clamps, thereby improving the safety of the entire system. When the lightning overvoltage exceeds a certain value, the gap discharge device can form a flashover between the puncture electrode and the grounding electrode, quickly establish a short-circuit channel, and cause the arc to burn on the wire clamp and release overvoltage energy, effectively preventing the wire clamp and the wire from being burned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0019] Figure 3 It is a bottom view structural schematic diagram of the present invention.

[0020] In the figure:

[0021] 100. Arc shielding device; 200. Gap discharge device; 300. Insulator. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Example 1

[0027] Reference Figure 1 , which is the first embodiment of the present invention, provides a lightning protection tension clamp, which includes an arc shielding device 100. The arc shielding device 100 is installed on the clamp to evenly distribute lightning current and reduce discharge phenomenon.

[0028] Specifically, the gap discharge device 200 is arranged on one side of the arc shielding device 100, and guides the lightning current through the bypass and tip discharge principle.

[0029] Furthermore, two arc-shaped shielding devices 100 are provided, and an insulator 300 is installed between the two arc-shaped shielding devices 100. The gap discharge device 200 forms an arc at the position where the electrodes are closest to each other, and the arc is quickly elongated and easily extinguished.

[0030] The arc shielding device 100 is installed on the wire clamp and adopts an arc shape design, which can evenly distribute the lightning current and reduce the heating and discharge caused by excessive local current density. Through this design, the risk of lightning current accumulation at the wire clamp can be significantly reduced, thereby enhancing the resistance of the wire clamp and the conductor to lightning current. In addition, the arc shielding device 100 also helps to improve the current conductivity, making the charge flow smoother and further reducing energy loss.

[0031] Preferably, the gap discharge device 200 is arranged on one side of the arc shielding device 100, and the gap discharge device 200 works by bypassing and tip discharge principles. When the overvoltage caused by lightning exceeds a certain threshold, a flashover is formed between the puncture electrode and the grounding electrode, and a short-circuit channel is established. In this way, the arc can burn on the arcing arm, release the overvoltage energy, effectively lead the lightning current out of the system, and protect the wire clamp and the wire from burns. In particular, the design of the gap discharge device 200 enables the arc to be formed at the place where the electrodes are closest, and then quickly elongated and easily extinguished. This process not only improves the discharge efficiency, but also ensures the safety and reliability of the equipment.

[0032] It should be noted that in order to further improve the insulation performance of the entire system, an insulator 300 is installed between the two arc-shaped shielding devices 100. This not only strengthens the electrical isolation between the wire clamps, but also ensures that even if one shielding device fails, the other can still work normally, providing additional safety protection for the transmission line.

[0033] In summary, this new type of lightning protection tension clamp effectively solves the problems that traditional clamps are prone to when facing lightning strikes, such as fusing and discharge caused by high local current density, through its unique structural design. It not only improves the ability of transmission lines to resist lightning strikes, but also enhances the overall reliability and safety of the system.

[0034] Example 2

[0035] Reference Figures 1 to 3 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the gap discharge device 200 includes a plurality of puncture electrodes and a grounding electrode. When the lightning overvoltage exceeds a certain value, a flashover is formed between the puncture electrode and the grounding electrode, thereby establishing a short-circuit channel.

[0036] Furthermore, when the gap discharge device 200 flashes, the arc burns on the gap discharge device 200 to release overvoltage energy, thereby protecting the wire clamp and the wire from being burned.

[0037] Furthermore, the cable clamp is suitable for 120-240mm 2 The wire clamp is made of aluminum alloy or stainless steel, and the weight of a single device does not exceed 7kg. The arc shielding device 100 is designed and processed with high-strength aluminum alloy material to protect overhead lines from direct lightning and induced lightning overvoltage hazards.

[0038] When in use, in this novel lightning protection tension clamp device, the gap discharge device 200 is one of the key components, which includes multiple puncture electrodes and grounding electrodes. When the overvoltage generated by the lightning strike exceeds the set threshold, a flashover phenomenon will occur between the puncture electrode and the grounding electrode, thereby forming a short-circuit channel. This design allows the lightning current to be quickly conducted through this newly formed path, avoiding direct impact on the clamp or the conductor to cause damage.

[0039] Once a flashover occurs, the arc burns on the gap discharge device 200, effectively releasing the overvoltage energy caused by the lightning strike. This process not only quickly eliminates potential dangers, but also effectively protects the wire clamp and the wire from burns. In addition, the gap discharge device 200 adopts the arcing angle gap discharge technology to ensure that the arc can be formed at the closest point between the electrodes, and then it will be quickly elongated and easy to extinguish. Such a mechanism helps to ensure the long-term stable operation of the equipment.

[0040] The clamp is suitable for diameters ranging from 120-240mm 2 The overall structure can be made by welding or casting, which makes the installation process simple and quick without causing any damage to the wires themselves. In order to ensure that the device has sufficient strength and durability, aluminum alloy or stainless steel is selected, both of which have good mechanical properties and corrosion resistance. The weight of a single device is controlled within 7kg, which is easy to transport and install.

[0041] In addition, the arc shielding device 100 is also an important component of the wire clamp, which is designed and processed with high-strength aluminum alloy materials. This special shape design helps to evenly distribute lightning current and reduce the possibility of local concentrated heating, thereby further reducing the risk of line breakage caused by lightning strikes. The main function of the arc shielding device 100 is to protect overhead lines from direct lightning strikes and induced lightning overvoltages, ensuring the safe and stable operation of the power system. Through these comprehensive measures, the new lightning protection tension clamp significantly improves the ability of transmission lines to resist lightning strikes and enhances the reliability of the system.

[0042] Example 3

[0043] Reference Figures 1 to 3 , which is the third embodiment of the present invention.

[0044] The operation process of this device is as follows: Two arc shielding devices 100 are installed on the main body of the wire clamp respectively to ensure that they can evenly distribute the lightning current and reduce the discharge phenomenon. The arc design helps to improve the current conductivity and make the charge flow smoother, thereby reducing the risk of local overheating. A gap discharge device 200 is set on one side of the arc shielding device 100. This device includes a puncture electrode and a grounding electrode. When the overvoltage caused by lightning exceeds a certain value, a flashover will form between the puncture electrode and the grounding electrode, establish a short-circuit channel, and quickly release the lightning current. After the installation is completed, adjust the position and gap between the grounding body and the discharge point of the wire clamp according to the line level to meet different discharge requirements. Carry out necessary tests to ensure that all components are working properly, especially to check whether the gap discharge device 200 can respond correctly in the event of a lightning strike, and whether the arc can be quickly elongated and extinguished.

[0045] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lightning protection tension clamp, characterized in that: include, An arc-shaped shielding device (100), the arc-shaped shielding device (100) being installed on a wire clamp to evenly distribute lightning current and reduce discharge phenomena; The gap discharge device (200) conducts lightning current through bypass and tip discharge principles.

2. The lightning protection tension clamp according to claim 1 is characterized in that: The gap discharge device (200) is arranged on one side of the arc-shaped shielding device (100).

3. The lightning protection tension clamp according to claim 2 is characterized in that: Two arc-shaped shielding devices (100) are provided, and an insulator (300) is installed between the two arc-shaped shielding devices (100).

4. The lightning protection tension clamp according to claim 3 is characterized in that: The gap discharge device (200) comprises a plurality of puncture electrodes and a grounding electrode. When the lightning overvoltage exceeds a certain value, a flashover is formed between the puncture electrode and the grounding electrode, thereby establishing a short-circuit channel.

5. The lightning protection tension clamp according to any one of claims 1 to 4, characterized in that: When the gap discharge device (200) flashes, the arc burns on the gap discharge device (200) to release overvoltage energy, thereby protecting the wire clamp and the wire from being burned.

6. The lightning protection tension clamp according to claim 5, characterized in that: Cable clamps are suitable for 120-240mm 2 The whole is made of welding or casting, which is easy to install and will not damage the wire.

7. The lightning protection tension clamp according to claim 6, characterized in that: The wire clamp can withstand a working environment temperature of -35°C to 40°C and is suitable for areas with an altitude of 1000 to 2000m.

8. The lightning protection tension clamp according to claim 7, characterized in that: The wire clamp is made of aluminum alloy or stainless steel, and the weight of a single device does not exceed 7kg.

9. The lightning protection tension clamp according to claim 8, characterized in that: The gap discharge device (200) forms an arc at the point where the electrodes are closest to each other, and the arc is rapidly elongated and easily extinguished.

10. The lightning protection tension clamp according to claim 9, characterized in that: The arc-shaped shielding device (100) is designed and processed from high-strength aluminum alloy material and is used to protect overhead lines from direct lightning strikes and induced lightning overvoltage hazards.

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