Composite outer sleeve series gap surge arrester

Abstract

The utility model provides a kind of composite outer suit series gap lightning arrester, it is related to lightning arrester technical field, including adjustable support, lightning arrester body and insulator are installed with interval on adjustable support, the top of lightning arrester body is connected with bolt type hook drain wire clamp by lightning arrester lead, bolt type hook drain wire clamp is fastened connection with insulated conductor, the top of insulator is connected with insulated conductor, waterproof cover is equipped outside the junction of insulator and insulated conductor.The adjustable support of the utility model is connected with the rotary connecting structure of U-shaped support and rotating arm, cooperate arc groove and locking bolt assembly, the angle adjustment of lightning arrester body and insulator can be realized.The utility model can accurately match different line direction while adapting to the gap requirement of different installation environment, the utility model effectively solves the sealing failure problem caused by wire vibration of traditional waterproof cover, and can maintain good protective performance under various severe environments.

Description

Technical Field

[0001] This utility model mainly relates to the field of surge arrester technology, specifically to a composite jacket series gap surge arrester. Background Technology

[0002] In power transmission and distribution lines, surge arresters are key equipment to ensure the safe and stable operation of the lines. Their main function is to limit the damage to line equipment caused by lightning overvoltage and switching overvoltage. With the continuous development of power grid construction, the environment in which the lines are located is becoming increasingly complex, which places higher demands on the performance, adaptability, and reliability of surge arresters.

[0003] Traditional surge arresters have many limitations in terms of structure and performance. Regarding installation adaptability, many surge arresters use fixed-angle brackets, which cannot flexibly adjust the angle according to different line routes and installation environments. This can easily lead to installation interference or insufficient protection range in complex power grid scenarios, affecting the protection effect. Furthermore, their installation structures are mostly monolithic designs, making pre-installation and assembly cumbersome, increasing the time and difficulty of high-altitude operations.

[0004] In terms of protection performance, the connection protection structure of traditional surge arresters is relatively simple, often relying solely on a single sealing method for waterproofing and dustproofing. During long-term use, this type of protection is prone to seal failure due to factors such as conductor vibration and changes in ambient temperature, allowing moisture and dust to penetrate the connection, causing a decline in insulation performance and consequently affecting the service life and operational reliability of the surge arrester. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model:

[0006] This utility model provides a composite jacket series gap surge arrester to solve the technical problems existing in the background art.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: a composite jacket series gap surge arrester, including an adjustable bracket, on which a surge arrester body and an insulator are installed at intervals. The adjustable bracket is used to adjust the tilt angle of the surge arrester body and the insulator. The top of the surge arrester body is connected to a bolt-type hook drain clamp through a surge arrester lead wire. The bolt-type hook drain clamp is fastened to an insulated wire. The top of the insulator is connected to an insulated wire. A waterproof cover is fitted on the outside of the connection between the insulator and the insulated wire.

[0009] Preferably, the adjustable bracket includes a U-shaped bracket, the two sides of the open end of the U-shaped bracket are respectively rotatably connected to one end of the rotating arm through a central bolt assembly, the rotating arm is provided with an arc-shaped groove, the locking bolt assembly passes through the arc-shaped groove and is threadedly connected to the U-shaped bracket, a mounting frame one is connected between the two rotating arms, and a mounting frame two is provided on the mounting frame one. The mounting frame one is used to install the surge arrester body, and the mounting frame two is used to install the insulator.

[0010] Preferably, the waterproof cover includes an upper cover and a lower cover, the upper cover and the lower cover are fastened together to form a cavity for accommodating the connection between the insulator and the insulated wire, and the adjacent surfaces of the upper cover and the lower cover are provided with through slots for the insulated wire to pass through, and the end of the lower cover away from the upper cover is provided with an installation slot for installing the insulator.

[0011] Preferably, a second sealing block is provided on the end face of the upper cover near the lower cover and close to the through groove, and a first sealing block is provided on the end face of the lower cover near the upper cover and away from the through groove. A first sealing groove is provided on the upper cover to cooperate with the first sealing block, and a second sealing groove is provided on the lower cover to cooperate with the second sealing block. The first sealing block is embedded in the first sealing groove to achieve a sealing fit, and the second sealing block is embedded in the second sealing groove to achieve a sealing fit.

[0012] Preferably, the upper cover of the waterproof cover is provided with buckle plates on both sides, and the buckle plates are provided with slots. The lower cover is provided with a connecting groove, and the connecting groove is provided with a connecting protrusion that engages with the slot. The upper cover and the lower cover are fastened together by the cooperation of the buckle plates, the connecting groove, the connecting protrusion and the slot.

[0013] Preferably, a sealing gasket is provided in the through groove after the upper cover and the lower cover are fastened together, and an insulated wire passes through the center of the sealing gasket to achieve a seal.

[0014] 3. Beneficial effects:

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0016] This utility model's adjustable bracket, through a U-shaped bracket and rotating arm rotational connection structure, combined with an arc-shaped groove and locking bolt assembly, allows for angle adjustment of the surge arrester body and insulator. This utility model can precisely match different line routes, such as horizontal, inclined, and vertical installations, while adapting to different installation environment clearance requirements, such as tower corners and high- and low-voltage intersections. It avoids installation interference or insufficient protection range problems caused by fixed angles, significantly improving the equipment's adaptability in complex power grid scenarios.

[0017] The waterproof cover of this utility model adopts two annular interface seals formed by sealing block one and sealing groove one, and sealing block two and sealing groove two. The concave and convex fit prevents rainwater from penetrating along the gap of the cover. The sealing gasket at the through groove is made of aging-resistant silicone rubber material. Its central hole is tightly fitted with the outer periphery of the insulated wire to form a radial seal. It can withstand large temperature differences and long-term ultraviolet radiation, effectively solving the problem of sealing failure caused by wire vibration in traditional waterproof covers. It can maintain good protective performance in a variety of harsh environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the adjustable support structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of the waterproof cover of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the waterproof cover of this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of area A of this utility model;

[0023] Figure 6 This is a schematic diagram of the lower cover structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the bolt-type hook drain clamp structure of this utility model.

[0025] Figure label:

[0026] 1. Adjustable bracket; 11. U-shaped bracket; 12. Mounting bracket one; 13. Mounting bracket two; 14. Rotating arm; 15. Arc groove; 16. Center bolt assembly; 17. Locking bolt assembly; 2. Surge arrester body; 3. Insulator; 4. Insulated wire; 5. Bolt-type hook drain clamp; 6. Waterproof cover; 61. Upper cover; 62. Lower cover; 63. Through groove; 64. Sealing block one; 65. Sealing block two; 66. Buckle plate; 67. Connecting groove; 68. Connecting protrusion; 69. Slot; 610. Mounting groove; 611. Sealing gasket. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 are not intended to indicate or imply that the device or element 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.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" 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 according to the specific circumstances.

[0031] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Example

[0032] See attached document Figures 1-7 A composite-jacketed series gap surge arrester includes an adjustable bracket 1, on which arrester bodies 2 and insulators 3 are installed at intervals. The adjustable bracket 1 is used to adjust the tilt angle of the arrester bodies 2 and insulators 3. The top of the arrester body 2 is connected to a bolt-type hook current-carrying clamp 5 via an arrester lead wire. The bolt-type hook current-carrying clamp 5 is securely connected to an insulated conductor 4. The top of the insulator 3 is connected to the insulated conductor 4. A waterproof cover 6 is fitted over the connection between the insulator 3 and the insulated conductor 4. The arrester body 2 is composed of zinc oxide resistor sheets with excellent volt-ampere characteristics, bonded in series, which has the advantages of good protection characteristics and large current carrying capacity. The insulating jacket of the arrester body 2 is made of a silicone rubber composite jacket that is resistant to climate change, electrical corrosion, and pollution.

[0033] The adjustable bracket 1 includes a U-shaped bracket 11. The two sides of the open end of the U-shaped bracket 11 are rotatably connected to one end of the rotating arm 14 through a central bolt assembly 16. The rotating arm 14 is provided with an arc-shaped groove 15. The locking bolt assembly 17 passes through the arc-shaped groove 15 and is threadedly connected to the U-shaped bracket 11. A mounting bracket 12 is connected between the two rotating arms 14. A mounting bracket 23 is provided on the mounting bracket 12. The mounting bracket 12 is used to install the surge arrester body 2, and the mounting bracket 23 is used to install the insulator 3.

[0034] The waterproof cover 6 includes an upper cover 61 and a lower cover 62. The upper cover 61 and the lower cover 62 are fastened together to form a cavity for accommodating the connection between the insulator 3 and the insulated wire 4. The adjacent surfaces of the upper cover 61 and the lower cover 62 are provided with through grooves 63 for the insulated wire 4 to pass through. The end of the lower cover 62 away from the upper cover 61 is provided with an installation groove 610 for installing the insulator 3.

[0035] A second sealing block 65 is provided on the end face of the upper cover 61 near the lower cover 62 and close to the through groove 63. A first sealing block 64 is provided on the end face of the lower cover 62 near the upper cover 61 and away from the through groove 63. A first sealing groove is provided on the upper cover 61 to cooperate with the first sealing block 64. A second sealing groove is provided on the lower cover 62 to cooperate with the second sealing block 65. The first sealing block 64 is embedded in the first sealing groove to achieve a sealing fit. The second sealing block 65 is embedded in the second sealing groove to achieve a sealing fit.

[0036] The upper cover 61 of the waterproof cover 6 is provided with buckle plates 66 on both sides, and the buckle plates 66 are provided with slots 69. The lower cover 62 is provided with a connecting groove 67, and a connecting protrusion 68 is provided in the connecting groove 67 to engage with the slot 69. The upper cover 61 and the lower cover 62 are fastened together by the cooperation of the buckle plates 66, the connecting groove 67, the connecting protrusion 68 and the slot 69.

[0037] A sealing gasket 611 is provided in the through groove 63 after the upper cover 61 and the lower cover 62 are fastened together. The sealing gasket 611 is made of aging-resistant silicone rubber material, and the insulated wire 4 passes through the center of the sealing gasket 611 to achieve a seal.

[0038] Working principle:

[0039] The surge arrester body 2 and insulator 3 are fixed in the working position by the adjustable bracket 1. The locking bolt assembly 17 is loosened, and the rotating arm 14 is rotated around the center bolt assembly 16. The inclination angle of the two is adjusted by the arc groove 15 so that the surge arrester body 2, insulator 3 and insulated wire 4 form a preset gap. After the adjustment is completed, the locking bolt assembly 17 is tightened to fix the angle.

[0040] Under normal operating conditions, the surge arrester body 2 is electrically connected to the insulated conductor 4 through the bolt-type hook drain clamp 5. The insulator 3 supports the insulated conductor 4. The waterproof cover 6 covers the connection between the upper cover 61 and the lower cover 62 through the snap-fit ​​structure of the snap plate 66 and the connecting protrusion 68. The sealing block 1 64, the sealing block 2 65 and the sealing gasket 611 form a multiple seal to prevent moisture and dust from entering.

[0041] Under normal operating conditions, the discharge gap acts as an isolation mechanism, separating the surge arrester body 2 from the system and preventing it from being subjected to continuous power frequency operating voltage and operational overvoltage surges in the system. When the line is struck by lightning, the series gap of the surge arrester breaks down and discharges, promptly releasing the lightning current and limiting the amplitude of the lightning overvoltage. After the lightning current has been released, the surge arrester body 2 restores its impedance and promptly cuts off the power frequency follow current when the power frequency AC crosses zero, preventing the insulated conductor 4 from breaking after a lightning strike and protecting the normal operation of the overhead insulated conductor 4.

[0042] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A composite jacketed series gap surge arrester, characterized in that: The device includes an adjustable bracket (1), on which a surge arrester body (2) and an insulator (3) are installed at intervals. The adjustable bracket (1) is used to adjust the tilt angle of the surge arrester body (2) and the insulator (3). The top of the surge arrester body (2) is connected to a bolt-type hook drain clamp (5) through a surge arrester lead. The bolt-type hook drain clamp (5) is fastened to an insulated wire (4). The top of the insulator (3) is connected to the insulated wire (4). A waterproof cover (6) is provided on the outside of the connection between the insulator (3) and the insulated wire (4).

2. The composite jacket series gap surge arrester according to claim 1, characterized in that: The adjustable bracket (1) includes a U-shaped bracket (11). The two sides of the open end of the U-shaped bracket (11) are rotatably connected to one end of the rotating arm (14) through a central bolt assembly (16). An arc groove (15) is provided on the rotating arm (14). A locking bolt assembly (17) passes through the arc groove (15) and is threadedly connected to the U-shaped bracket (11). A mounting frame one (12) is connected between the two rotating arms (14). A mounting frame two (13) is provided on the mounting frame one (12). The mounting frame one (12) is used to install the surge arrester body (2), and the mounting frame two (13) is used to install the insulator (3).

3. A composite jacketed series gap surge arrester according to claim 1, characterized in that: The waterproof cover (6) includes an upper cover (61) and a lower cover (62). The upper cover (61) and the lower cover (62) are fastened together to form a cavity for accommodating the connection between the insulator (3) and the insulated wire (4). The adjacent surfaces of the upper cover (61) and the lower cover (62) are provided with through grooves (63) for the insulated wire (4) to pass through. The lower cover (62) has an installation groove (610) for installing the insulator (3) at one end away from the upper cover (61).

4. A composite jacketed series gap surge arrester according to claim 3, characterized in that: A sealing block 2 (65) is provided on the end face of the upper cover (61) near the lower cover (62) and close to the through groove (63). A sealing block 1 (64) is provided on the end face of the lower cover (62) near the upper cover (61) and away from the through groove (63). A sealing groove 1 that cooperates with the sealing block 1 (64) is provided on the upper cover (61). A sealing groove 2 that cooperates with the sealing block 2 (65) is provided on the lower cover (62). The sealing block 1 (64) is embedded in the sealing groove 1 to achieve a sealing fit. The sealing block 2 (65) is embedded in the sealing groove 2 to achieve a sealing fit.

5. A composite jacketed series gap surge arrester according to claim 4, characterized in that: The upper cover (61) of the waterproof cover (6) is provided with buckle plates (66) on both sides, and the buckle plates (66) are provided with slots (69). The lower cover (62) is provided with a connecting groove (67), and the connecting groove (67) is provided with a connecting protrusion (68) that engages with the slot (69). The upper cover (61) and the lower cover (62) are fastened together by the cooperation of the buckle plates (66), the connecting groove (67), the connecting protrusion (68) and the slot (69).

6. A composite jacketed series gap surge arrester according to claim 4, characterized in that: A sealing gasket (611) is provided in the through groove (63) after the upper cover (61) and the lower cover (62) are fastened together, and an insulated wire (4) passes through the center of the sealing gasket (611) to achieve a seal.

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