Circuit on-off device for high-voltage lightning arrester of hydropower station

Abstract

The utility model relates to the technical field of circuit on-off, and discloses a circuit on-off device for a hydropower station high-voltage lightning arrester, which comprises a mounting base, a lightning arrester body and an on-off device casing, two limiting grooves are arranged at the bottom of the on-off device casing, a limiting rod and a baffle plate are fixed on the mounting base, a mounting frame is fixed on the front side of the mounting base, and the baffle plate is fixed on the mounting frame. A first through hole and a second through hole are formed in the two sides of the mounting frame respectively, a pull rod slides in the first through hole, a pull ring and a limiting plate are fixed to the two ends of the pull rod respectively, the pull rod is sleeved with a reset spring, and an insertion rod penetrates through the second through hole. According to the utility model, the pull ring is pulled, and under the cooperation of the pull rod, the reset spring, the limiting plate and the insertion rod, the insertion rod relieves the limiting of the side wall of the on-off device shell, and the on-off device shell slides, so that the on-off device shell can be quickly taken down, the disassembly difficulty is reduced, and the safety and reliability of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit switching technology, and in particular to a circuit switching device for a high-voltage surge arrester in a hydropower station. Background Technology

[0002] High-voltage surge arresters play a crucial role in hydropower stations, primarily protecting electrical equipment from lightning strikes and transient overvoltages to ensure the safe and reliable operation of the system. Their working principle involves providing a low-impedance path to effectively guide lightning current to the ground, thus preventing equipment damage caused by lightning strikes. Switching devices are also vital in hydropower stations because they can quickly interrupt fault currents in the power system, preventing equipment damage and fires, while ensuring the safety of maintenance personnel. By effectively controlling the switching of circuits, they improve the reliability and stability of the system, thereby guaranteeing the continuity and security of power supply.

[0003] The switching device is connected to the base of the high-voltage surge arrester by bolts. The main drawbacks of disassembly and assembly include: first, the disassembly and assembly process is cumbersome and time-consuming, affecting maintenance efficiency; second, the bolts may rust or loosen due to long-term use, increasing the difficulty of disassembly and thus affecting the safety and reliability of the equipment.

[0004] Therefore, we propose a circuit switching device for high-voltage surge arresters in hydropower stations. Utility Model Content

[0005] The present invention mainly addresses the technical problems existing in the prior art and provides a circuit switching device for high-voltage surge arresters in hydropower stations.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a circuit switching device for a high-voltage surge arrester in a hydropower station, comprising a mounting base, a surge arrester body, and a switching device housing. Two limiting grooves are provided at the bottom of the switching device housing. A limiting rod and a baffle are fixed on the mounting base. A mounting frame is fixed on the front side of the mounting base. A first through hole and a second through hole are respectively provided on both sides of the mounting frame. A pull rod slides in the first through hole. A pull ring and a limiting plate are respectively fixed at both ends of the pull rod. A reset spring is sleeved on the pull rod. An insert rod passes through the second through hole.

[0007] Preferably, one end of the insertion rod near the limiting plate is fixedly connected to the limiting plate, and the insertion rod is adapted to the second through hole.

[0008] Preferably, the upper and lower walls of the limiting plate are fitted with the upper and lower walls of the inner cavity of the mounting frame, and the side wall of the insertion rod near the housing of the switching device is fitted with the side wall of the housing of the switching device.

[0009] Preferably, the limiting groove and the limiting rod are compatible and both are T-shaped structures.

[0010] Preferably, the return spring is sleeved on the pull rod and located in the inner cavity of the mounting frame, and the pull ring is fixed on the pull rod and located on the outer side of the mounting frame.

[0011] Preferably, the first through hole is located on the side of the mounting frame away from the housing of the on / off device, and the second through hole has a rectangular structure.

[0012] This utility model provides a circuit switching device for high-voltage surge arresters in hydropower stations. It has the following beneficial effects:

[0013] This circuit switching device for high-voltage surge arresters in hydropower stations allows for quick removal of the switching device housing by pulling a pull ring, which, in conjunction with a pull rod, a return spring, a limit plate, and a plug rod, releases the plug rod from its limit on the side wall of the switching device housing. This sliding action allows the switching device housing to be quickly removed, reducing disassembly difficulty and improving the safety and reliability of the equipment. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 This is a schematic diagram of the back of the casing of the switching device of this utility model;

[0018] Figure 3 This is a schematic diagram showing the disassembled casing and limiting rod of the switching device of this utility model.

[0019] Legend:

[0020] 1. Mounting base; 101. Surge arrester body; 2. Switch housing; 201. Limiting groove; 3. Baffle; 4. Mounting frame; 401. First through hole; 402. Pull rod; 403. Pull ring; 404. Return spring; 405. Limiting plate; 406. Second through hole; 407. Insert rod; 5. Limiting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: A circuit switching device for a high-voltage surge arrester in a hydropower station, such as... Figures 1-3 As shown, the device includes a mounting base 1 and a surge arrester body 101. A switching device housing 2 is detachably mounted on one side of the mounting base 1. Two limiting grooves 201 are formed at the bottom of the switching device housing 2. A limiting rod 5, adapted to the limiting groove 201, is fixedly connected to one end of the mounting base 1. The limiting grooves 201 and the limiting rods 5 are both T-shaped. A rectangular baffle 3 is fixedly connected to the end of the mounting base 1 that is close to the surge arrester body 101 and fits against the limiting rod 5. A mounting frame 4 is fixedly connected to the mounting base 1, away from the surge arrester body 101 and located in front of the switching device housing 2. A first through hole 401 is formed on the side of the mounting frame 4 away from the switching device housing 2. A sliding cavity for the first through hole 401 is fitted with a device adapted to the first through hole 401. A pull rod 402 is provided, with a pull ring 403 fixedly connected to one end of the pull rod 402 located outside the mounting frame 4. A return spring 404 is sleeved on the pull rod 402 and located in the inner cavity of the mounting frame 4. A limit plate 405 is fixedly connected to one end of the pull rod 402 and located in the inner cavity of the mounting frame 4. The upper and lower walls of the limit plate 405 are in contact with the upper and lower walls of the inner cavity of the mounting frame 4. A rectangular second through hole 406 is provided on the side wall of the mounting frame 4 away from the first through hole 401. An insert rod 407 passes through the inner cavity of the second through hole 406. The end of the insert rod 407 near the limit plate 405 is fixedly connected to the limit plate 405. The insert rod 407 is adapted to the second through hole 406. The side wall of the insert rod 407 near the switch housing 2 is in contact with the side wall of the switch housing 2.

[0023] The working principle of this utility model:

[0024] When in use, if it is necessary to remove the on / off device housing 2, pull the pull ring 403. Through the cooperation of the pull rod 402, the return spring 404, the limit plate 405, and the insertion rod 407, the insertion rod 407 releases the restriction on the side wall surface 2. At this time, it is only necessary to slide the on / off device housing 2. With the cooperation of the limit groove 201 and the limit rod 5, the on / off device housing 2 can be easily removed.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circuit on-off device for high-voltage lightning arrester of a hydropower station, comprising a mounting base (1), an arrester body (101), and an on-off device casing (2), characterized in that: The bottom of the housing (2) of the switching device has two limiting grooves (201). A limiting rod (5) and a baffle (3) are fixed on the mounting base (1). A mounting frame (4) is fixed on the front side of the mounting base (1). A first through hole (401) and a second through hole (406) are respectively opened on both sides of the mounting frame (4). A pull rod (402) slides in the first through hole (401). A pull ring (403) and a limiting plate (405) are respectively fixed at both ends of the pull rod (402). A reset spring (404) is sleeved on the pull rod (402). A plug rod (407) passes through the second through hole (406).

2. A circuit breaker for a high voltage surge arrester of a hydroelectric power station according to claim 1, characterized in that: The end of the insertion rod (407) near the limiting plate (405) is fixedly connected to the limiting plate (405), and the insertion rod (407) is adapted to the second through hole (406).

3. A circuit breaker for high voltage lightning arresters of hydroelectric power stations according to claim 1, characterized in that: The upper and lower walls of the limiting plate (405) are in contact with the upper and lower walls of the inner cavity of the mounting frame (4), and the insert rod (407) is in contact with the side wall of the switch housing (2) of the switch device.

4. A circuit breaker for high voltage lightning arresters of hydroelectric power stations according to claim 1, characterized in that: The limiting groove (201) and the limiting rod (5) are adapted to each other and are both T-shaped structures.

5. A circuit switching device for a high-voltage surge arrester in a hydropower station according to claim 1, characterized in that: The reset spring (404) is sleeved on the pull rod (402) and located in the inner cavity of the mounting frame (4), and the pull ring (403) is fixed on the pull rod (402) and located on the outside of the mounting frame (4).

6. A circuit switching device for a high-voltage surge arrester in a hydropower station according to claim 1, characterized in that: The first through hole (401) is located on the side of the mounting frame (4) away from the housing (2) of the switching device, and the second through hole (406) is a rectangular structure.

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