Surge arrester with core fixing device

Abstract

The utility model relates to the technical field of lightning arrester, and disclose a lightning arrester with core fixing device, this lightning arrester with core fixing device, including shell and core, the core is arranged in the shell inside, the bottom fixed mounting seat of shell, this lightning arrester with core fixing device, through setting fixed device, when needing to install the core, place the core on the placing plate, then the mounting block is sleeved on the connecting line peg, make the bottom of mounting block and the top of core adhere, through the cooperation of limiting block, limiting hole, handle and connecting spring, can make limiting block advance into limiting hole, to be able to play the effect of fixed mounting block, make mounting block fix the core in the shell, conveniently install the core, and drive limiting block from limiting hole by handle, to be able to remove the limiting of core, conveniently take out the core from the shell and replace and repair, convenient for staff operation.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, specifically a surge arrester with a core fixing device. Background Technology

[0002] Surge arresters are used to protect electrical equipment in power systems from damage caused by lightning strikes or switching overvoltages, and are crucial protective devices for the safe and stable operation of power systems. With increasing voltage levels, lightning strike overvoltages and switching overvoltages have become increasingly prominent issues, making it particularly important to improve the operating performance of surge arresters.

[0003] A surge arrester, patent publication number CN209544048U, includes a core, an upper electrode, a lower electrode, and a composite outer sleeve. The core comprises several resistive elements and an insulating support. The upper and lower electrodes are respectively located at both ends of the core. The insulating support connects the upper and lower electrodes and the resistive elements into a single unit. There are no gaps inside the core or between the core and the upper and lower electrodes. The upper and lower electrodes have a boss structure, including a platform portion and a protruding portion. The platform portion is close to the core, and a connecting wire bolt is located at the center of the end face of the protruding portion. The composite outer sleeve is a silicone rubber shed. This surge arrester has a simple and stable structure, high mechanical strength and electrical performance, can achieve maintenance-free operation throughout its entire life cycle, has high production efficiency, and low manufacturing cost.

[0004] In the aforementioned devices, the core and the outer shell are integrally molded, which can lead to damage when the core is subjected to a large current. When replacing it, the entire surge arrester device needs to be replaced, and the core cannot be replaced separately, resulting in a waste of resources. In view of this, a surge arrester with a core fixing device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a surge arrester with a core fixing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surge arrester with a core fixing device, comprising a housing and a core, wherein the core is disposed inside the housing, a mounting base is fixed at the bottom of the housing, a connecting bolt is fixed at the top of the core, a fixing device for convenient replacement of the core is provided at the top of the housing, and a stabilizing device for preventing the core from shaking inside the housing is provided inside the housing.

[0007] The fixing device includes a mounting block, a limiting block, a connecting spring, a handle, a placement plate, a transmission spring, and a limiting hole. The outer wall of the mounting block is attached to the inner top of the housing, and the limiting hole is opened on the inner wall of the housing. The outer wall of the limiting block is slidably installed on the inner wall of the mounting block. When it is necessary to install and fix the core, the core is placed inside the housing, and the mounting block is sleeved on the connecting bolt at the top of the core.

[0008] Preferably, one side of the connecting spring is fixed to the inner wall of the mounting block, the other side of the connecting spring is fixed to the side wall of the limiting block, the handle is fixed to the top of the limiting block, and the handle passes through the top of the mounting block, with the through-hole fitting snugly. By extending into the limiting hole through the limiting block, it can achieve the effect of limiting the mounting block.

[0009] Preferably, the placement plate is slidably mounted on the inner wall of the housing, the bottom of the transmission spring is fixed to the inner wall of the housing, and the other side of the transmission spring is fixed to the top of the placement plate. When the core is placed on the placement plate, the core can be moved downward to squeeze the placement plate downward, thereby compressing the transmission spring.

[0010] Preferably, the stabilizing device includes a push block, a triangular block, a return spring, and a clamping plate; the push block is fixed to the inner wall of the housing.

[0011] Preferably, the clamping plate is slidably mounted on the inner wall of the placement plate, and the triangular block is fixed on the side of the clamping plate away from the transmission spring. When the placement plate moves downward, the push block can squeeze the inclined surface of the triangular block, which can drive the clamping plate closer to the core.

[0012] Preferably, one side of the reset spring is fixed to the outer wall of the clamping plate, and the other side of the reset spring is fixed to the inner side of the placement plate.

[0013] Compared with the prior art, this utility model provides a surge arrester with a core fixing device, which has the following beneficial effects:

[0014] 1. This surge arrester with a core fixing device, by setting up a fixing device, allows the core to be placed on a placement plate when installation is required. Then, the mounting block is placed on the connecting bolt, so that the bottom of the mounting block fits against the top of the core. Through the cooperation of the limiting block, limiting hole, handle, and connecting spring, the limiting block can be inserted into the limiting hole, thereby fixing the mounting block and securing the core inside the housing. This facilitates the installation of the core. Furthermore, by using the handle to move the limiting block out of the limiting hole, the limiting of the core can be released, making it easy to remove the core from the housing for replacement and maintenance, thus facilitating operation by staff.

[0015] 2. This surge arrester with a core fixing device, through the setting of a stabilizing device, causes the core to press the placement plate downward when it is installed into the housing. Through the cooperation of the push block, triangular block and clamping plate, the clamping plate can clamp and fix the core to the bottom outer wall when it is installed into the housing, thereby improving the stability of the core and solving the problem that when the surge arrester is installed outdoors, the core will shake and be damaged inside the housing in the event of strong winds. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a partial structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the fixing device structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the stabilization device of this utility model;

[0021] Figure 6 This utility model Figure 2 An enlarged schematic diagram of the A structure.

[0022] In the diagram: 1. Housing; 2. Core; 3. Mounting base; 41. Mounting block; 42. Limiting block; 43. Connecting spring; 44. Handle; 45. Placement plate; 46. Transmission spring; 47. Limiting hole; 51. Clamping plate; 52. Return spring; 53. Triangular block; 54. Push block; 6. Connecting bolt. Detailed Implementation

[0023] like Figures 1-6 As shown, this utility model provides a technical solution: a surge arrester with a core fixing device, including a housing 1 and a core 2, the core 2 is disposed inside the housing 1, a mounting base 3 is fixed at the bottom of the housing 1, a connecting bolt 6 is fixed at the top of the core 2, a fixing device for easy replacement of the core 2 is provided at the top of the housing 1, and a stabilizing device is provided inside the housing 1 to prevent the core 2 from shaking inside the housing 1.

[0024] The fixing device includes a mounting block 41, a limiting block 42, a connecting spring 43, a handle 44, a placement plate 45, a transmission spring 46, and a limiting hole 47. The outer wall of the mounting block 41 is attached to the inner top of the housing 1, and the limiting hole 47 is formed on the inner wall of the housing 1. The outer wall of the limiting block 42 is slidably mounted on the inner wall of the mounting block 41. The size of the limiting hole 47 matches the size of the limiting block 42. Through the cooperation between the limiting hole 47 and the limiting block 42, the limiting block 42 can be limited. One side of the connecting spring 43 is fixed to the inner wall of the mounting block 41, and the other side of the connecting spring 43 is fixed to the side wall of the limiting block 42. By setting the connecting spring 43, the limiting block 42 can be reset. The handle 44 is fixed to the top of the limiting block 42 and passes through the top of the mounting block 41, and the passage fits snugly. The placement plate 45 is slidably installed on the inner wall of the housing 1. The bottom of the transmission spring 46 is fixed to the inner wall of the housing 1, and the other side of the transmission spring 46 is fixed to the top of the placement plate 45.

[0025] By setting a fixing device, when the core 2 needs to be installed, the core 2 is placed on the placement plate 45, and then the mounting block 41 is put on the connecting bolt 6 so that the bottom of the mounting block 41 fits against the top of the core 2. Through the cooperation of the limiting block 42, the limiting hole 47, the handle 44 and the connecting spring 43, the limiting block 42 can be inserted into the limiting hole 47, thereby fixing the mounting block 41 and fixing the core 2 in the housing 1, which is convenient for the installation of the core 2. Furthermore, by using the handle 44 to move the limiting block 42 out of the limiting hole 47, the limiting of the core 2 can be released, making it convenient to remove the core 2 from the housing 1 for replacement and maintenance, which is convenient for the staff to operate.

[0026] The stabilizing device includes a push block 54, a triangular block 53, a return spring 52, and a clamping plate 51. The push block 54 is fixed to the inner wall of the housing 1, the clamping plate 51 is slidably mounted on the inner wall of the placement plate 45, the triangular block 53 is fixed on the side of the clamping plate 51 away from the transmission spring 46, one side of the return spring 52 is fixed to the outer wall of the clamping plate 51, and the other side of the return spring 52 is fixed to the inner side of the placement plate 45.

[0027] By setting a stabilizing device, when the core 2 is installed into the housing 1, the core 2 will press the placement plate 45 downward. Through the cooperation of the push block 54, the triangular block 53 and the clamping plate 51, the clamping plate 51 can clamp and fix the bottom outer wall of the core 2 when the core 2 is installed into the housing 1, thereby improving the stability of the core 2 and solving the problem that when the surge arrester is installed outdoors, the core 2 will shake and be damaged inside the housing 1 when encountering strong winds or other situations.

[0028] Working principle: When the core 2 needs to be replaced, the three sets of handles 44 can be pulled to move the limiting block 42 out of the limiting hole 47, thereby releasing the limitation on the mounting block 41. When the mounting block 41 is released, the transmission spring 46 is in a compressed state, which can drive the placement plate 45 to move upward. When the placement plate 45 moves upward, it can push the core 2 out of the housing 1, thus facilitating the replacement of the core 2. When installing the core 2, the core 2 is placed on the placement plate 45 of the housing 1. By fitting the mounting block 41 onto the outer wall of the connecting bolt 6, the bottom of the mounting block 41 is made to fit against the top of the core 2. By pushing the three sets of handles 44, the core 2 can be replaced. Handle 44 allows the limiting block 42 to extend into the mounting block 41, compressing the connecting spring 43 and thus extending the mounting block 41 into the top inner side of the housing 1. When the mounting block 41 moves downward, it can drive the core 2 to move downward, causing the core 2 to press the placement plate 45 downward and compress the transmission spring 46. When the mounting block 41 is moved to the top of the housing 1 and level with it, the handle 44 can be released. Because the connecting spring 43 is in a compressed state, the connecting spring 43 drives the limiting block 42 to extend into the corresponding limiting hole 47, resetting the mounting block 41 and thus limiting the core 2, fixing the core 2 inside the housing 1.

[0029] When the core 2 is installed in the housing 1, when the placement plate 45 moves downward to contact the inclined surface of the push block 54 and the triangular block 53, the triangular block 53 will be subjected to compressive force, which can drive the clamping plate 51 to move closer to the core 2, compress the return spring 52, and bring the clamping plate 51 closer to clamp the outer wall of the core 2. When the core 2 is removed from the housing 1, when the placement plate 45 drives the core 2 to move upward, the triangular block 53 will move away from the push block 54. Since the return spring 52 is in a compressed state, the return spring 52 can drive the clamping plate 51 away from the core 2.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A surge arrester with a core fixing device, comprising a housing (1) and a core (2), wherein the core (2) is disposed inside the housing (1), characterized in that: The bottom of the housing (1) is fixed with a mounting base (3), the top of the core (2) is fixed with a connecting bolt (6), the top of the housing (1) is provided with a fixing device to facilitate the replacement of the core (2), and the housing (1) is provided with a stabilizing device to prevent the core (2) from shaking inside the housing (1). The fixing device includes a mounting block (41), a limiting block (42), a connecting spring (43), a handle (44), a placement plate (45), a transmission spring (46), and a limiting hole (47); the outer wall of the mounting block (41) is attached to the inner side of the top of the housing (1), the limiting hole (47) is opened on the inner wall of the housing (1), and the outer wall of the limiting block (42) is slidably mounted on the inner wall of the mounting block (41).

2. A surge arrester with a core fixing device according to claim 1, characterized in that: One side of the connecting spring (43) is fixed to the inner wall of the mounting block (41), and the other side of the connecting spring (43) is fixed to the side wall of the limiting block (42). The handle (44) is fixed to the top of the limiting block (42), and the handle (44) passes through the top of the mounting block (41) and fits at the point of penetration.

3. A surge arrester with a core fixing device according to claim 2, characterized in that: The placement plate (45) is slidably mounted on the inner wall of the housing (1), the bottom of the transmission spring (46) is fixed to the inner wall of the housing (1), and the other side of the transmission spring (46) is fixed to the top of the placement plate (45).

4. A surge arrester with a core fixing device according to claim 3, characterized in that: The stabilizing device includes a push block (54), a triangular block (53), a return spring (52), and a clamping plate (51); the push block (54) is fixed to the inner wall of the housing (1).

5. A surge arrester with a core fixing device according to claim 4, characterized in that: The clamping plate (51) is slidably mounted on the inner wall of the placement plate (45), and the triangular block (53) is fixed on the side of the clamping plate (51) away from the transmission spring (46).

6. A surge arrester with a core fixing device according to claim 5, characterized in that: One side of the reset spring (52) is fixed to the outer wall of the clamping plate (51), and the other side of the reset spring (52) is fixed to the inner side of the placement plate (45).

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