A false closing prevention locking structure of an electrical switch cabinet of a hydropower station

Abstract

The utility model relates to electrical equipment technical field, concretely is a kind of anti-misoperation locking structure of hydropower station electrical switch cabinet.The structure includes cabinet body, mounting plate, plug-in cylinder, elastic member and positioning sleeve, mounting plate is set in switch side, and is equipped with the through hole for plug-in cylinder sliding, plug-in cylinder can be inserted into switch corresponding part to limit its rotation, elastic member is used to provide reset force to plug-in cylinder, positioning sleeve is used to limit plug-in cylinder stroke, ensure its stable location.The structure can effectively prevent switch from non-expected rotation due to misoperation, improve operation safety and system reliability, and is suitable for low-voltage switch cabinet in important places such as hydropower station.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical switch cabinets, and in particular to an anti-misoperation interlocking structure for an electrical switch cabinet in a hydropower station. Background Technology

[0002] Hydropower stations, as a typical clean energy generation method, are widely distributed in major river basins across my country, and their stable operation is crucial to the safety of the power grid. In the electrical system of a hydropower station, the switchgear is the core equipment connecting the generator sets, transformers, and transmission lines, responsible for connecting and disconnecting the circuits. Especially in low-voltage systems, frequent operations and large load variations place higher demands on the reliability and operational safety of the switchgear.

[0003] However, during routine operation and maintenance, due to human error, equipment structural defects, or unclear identification labels, accidental closing or opening of switches is highly likely. Such misoperation may lead to short circuits, arcing, burnout of electrical components, or even electric shock accidents, seriously threatening the safety of equipment and maintenance personnel. Traditional switchgear relies heavily on human methods such as labels and management systems for prevention, lacking a simple, intuitive physical interlocking device that can effectively prevent misoperation.

[0004] Currently, some low-voltage switchgear has certain interlocking structures, such as mechanical interlocks and padlock-type protective plates. However, these generally suffer from problems such as complex structure, cumbersome operation, and inconvenient maintenance, making them unsuitable for application scenarios like hydropower stations, which are characterized by complex environments, limited space, and high operating frequencies. Therefore, there is an urgent need for a switchgear anti-misoperation interlocking structure that is easy to install, compact in structure, and highly reliable, in order to improve the operational safety and ergonomics of electrical systems.

[0005] In view of this, the inventor has specifically designed an anti-misoperation interlocking structure for electrical switchgear in hydropower stations, which leads to this invention. Utility Model Content

[0006] (a) Technical problems to be solved The purpose of this application is to provide an anti-misoperation interlocking structure for electrical switchgear in hydropower stations, which at least solves the problem that misoperation during the operation and maintenance of electrical switchgear in hydropower stations can lead to accidental closing or opening of switches, resulting in equipment damage or personal safety hazards.

[0007] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides the following technical solution: This application provides an anti-misoperation interlocking structure for an electrical switchgear in a hydropower station, including: The cabinet body has a switch rotatably connected to it for controlling the on / off state of the circuit; The mounting plate has several through holes on its surface and is fixedly mounted on the surface of the cabinet body on one side of the switch. The insert can be slidably connected to the mounting plate along the through hole, and restricts the rotation of the switch; An elastic element is disposed between the insert and the mounting plate to provide a restoring elastic force for the insert; A positioning sleeve is fixedly connected to the side wall of the mounting plate to limit the sliding stroke of the insert, thereby stably restricting the switch.

[0008] In a further embodiment, the mounting plate is fixed to the cabinet body by bolts.

[0009] In a further embodiment, the insert is a hollow cylindrical structure with a limiting foot at its lower end that matches the number and shape of the through holes, and adjacent limiting feet are used to limit the rotation of the switch.

[0010] In a further embodiment, the surface of the mounting plate and the limiting foot are provided with limiting holes for the positioning sleeve to pass through, so as to fix the insert on the mounting plate.

[0011] In a further embodiment, the elastic element is a helical compression spring, one end of which is fixedly connected to the bottom of the insert, and the other end abuts against the top of the mounting plate.

[0012] In a further embodiment, a limit ring is provided above the positioning sleeve to facilitate the removal of the positioning sleeve and to prevent the sleeve from detaching from the insert.

[0013] In a further embodiment, the number of limiting feet and limiting holes is four, and they are evenly distributed circumferentially on the insert.

[0014] In a further embodiment, a warning label is provided on the surface of the insert.

[0015] In a further embodiment, anti-slip protrusions are also provided around the insertion tube.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: By installing inserts, elastic elements, and positioning sleeves on the electrical switchgear of hydropower stations, a simple, easy-to-install, and reliable anti-misoperation interlocking structure is formed. Compared with existing technical solutions that rely on operating procedures or padlocks to prevent misoperation, this structure can effectively lock the physical position of the switch, preventing accidental closing or opening of the switch due to accidental contact. This significantly improves the operational safety and system stability of the hydropower station switchgear during operation and maintenance.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] in: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of a portion; Figure 3 This is a schematic diagram of the overall structure of the main body of this utility model; Figure 4 This is a schematic diagram of the overall structure of the insert of this utility model; Figure 5 This is a schematic diagram of the overall structure of the mounting plate of this utility model. Label Explanation: 1. Cabinet body; 2. Switch; 3. Mounting plate; 31. Through hole; 4. Insert; 41. Limiting foot; 42. Anti-slip protrusion; 5. Elastic element; 6. Positioning sleeve; 61. Limiting ring; 7. Bolt; 8. Limiting hole; 9. Warning sign. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] like Figure 1 and Figure 2 As shown, an anti-misoperation interlocking structure for a hydropower station electrical switchgear 2 cabinet is provided, including: cabinet body 1, mounting plate 3, insert 4, elastic element 5, and positioning sleeve 6. This structure is mainly used to restrict the rotation of switch 2 in unauthorized or unexpected states, preventing electrical misoperation events, and is especially suitable for low-voltage systems in hydropower stations with extremely high operational safety requirements.

[0021] A rotatable switch 2 is installed on the cabinet body 1 to control the on / off state of the circuit. A mounting plate 3 is fixedly installed on one side of the switch 2. The mounting plate 3 is connected to the cabinet body 1 by bolts 7, which ensures a secure installation and facilitates later inspection and maintenance. Several through holes 31 are formed on the surface of the mounting plate 3. The through holes 31 are used for the sliding engagement of the insert 4, and their positions correspond to the locking part of the switch 2.

[0022] like Figures 2 to 5As shown, the insert 4 is preferably a hollow cylindrical structure. The insert 4 can slide up and down along the through hole 31 on the mounting plate 3. Multiple limiting feet 41 are formed at its lower end. In this embodiment, there are four limiting feet 41, evenly distributed around the bottom periphery of the insert 4. These limiting feet 41 match the limiting structure on the switch 2 body. When the insert 4 is pressed to the bottom, the limiting feet 41 can be inserted into the limiting holes 8 on the switch 2, thereby achieving physical locking of the switch 2 and preventing its rotation.

[0023] To ensure that the insert 4 is in the upward position when not pressed, i.e., the switch 2 is not locked, an elastic element 5 is provided between the insert 4 and the mounting plate 3. In this embodiment, the elastic element 5 is a helical compression spring, one end of which is fixedly connected to the bottom of the insert 4, and the other end abuts against the top of the mounting plate 3, providing an upward reset force. The spring remains in a naturally extended state when the insert 4 is not pressed, pushing the insert 4 out of the locked state; when the operator needs to lock the switch 2, simply press the insert 4 so that its lower limiting foot 41 inserts into the limiting hole 8, thus forming a reliable locked state. In addition, anti-slip protrusions 42 are provided around the insert 4 for easy insertion, removal and handling.

[0024] To further prevent the insert 4 from loosening or misaligning when inserted, a positioning sleeve 6 is provided on the side wall of the mounting plate 3. This positioning sleeve 6 slides with the insert 4, forming a limiting cavity to restrict the maximum sliding stroke of the insert 4, ensuring it is stably engaged in the corresponding part of the switch 2 in the locked position. Preferably, a limiting ring 61 is provided above the positioning sleeve 6 to facilitate manual removal, preventing the sleeve from falling off or accidentally disengaging due to excessive spring rebound, while also improving the overall safety and maintainability of the structure.

[0025] In practical use, in order to facilitate the identification of the current status of the socket 4 and to warn the operator, the outer surface of the socket 4 is also provided with obvious warning signs 9, such as color markings, warning words or reflective strips, to further enhance the ability to prevent misoperation.

[0026] like Figure 4 and Figure 5 As shown, the structure of the mounting plate 3 and the plug 4 can also be customized according to different models of switch cabinets 2. The number and arrangement of the mounting holes can be adjusted according to the number of limit feet 41. For example, in this embodiment, there are four limit feet 41 and limit holes 8, which are evenly distributed at a 90° angle at the bottom of the plug 4, making the insertion process more stable and the locking effect more reliable.

[0027] In summary, this utility model, through the rational arrangement of the insert 4, elastic element 5, and positioning sleeve 6, forms a compact, easy-to-operate, and reliable anti-misoperation interlocking structure. This structure not only effectively prevents accidental closing or opening of switch 2 due to operator error or misjudgment, but also improves the operational safety and ergonomic adaptability of the hydropower station switchgear during operation, maintenance, and repair. Compared with existing anti-misoperation structures relying on padlocks and mechanical linkages, this structure has significant advantages such as convenient installation, low cost, and high reliability, making it suitable for widespread application in various hydropower station low-voltage switchgear systems.

[0028] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A misoperation prevention interlocking structure for an electrical switchgear in a hydropower station, characterized in that, include: The cabinet body has a switch rotatably connected to it for controlling the on / off state of the circuit; The mounting plate has several through holes on its surface and is fixedly mounted on the surface of the cabinet body on one side of the switch. The insert can be slidably connected to the mounting plate along the through hole, and restricts the rotation of the switch; An elastic element is disposed between the insert and the mounting plate to provide a restoring elastic force for the insert; A positioning sleeve is fixedly connected to the side wall of the mounting plate to limit the sliding stroke of the insert, thereby stably restricting the switch.

2. The anti-misoperation interlocking structure for a hydropower station electrical switchgear according to claim 1, characterized in that, The mounting plate is fixed to the cabinet body with bolts.

3. The anti-misoperation interlocking structure for an electrical switchgear in a hydropower station according to claim 2, characterized in that, The insert is a hollow cylindrical structure, and its lower end forms a limiting foot that matches the number and shape of the through holes. The adjacent limiting feet are used to limit the rotation of the switch.

4. The anti-misoperation interlocking structure for a hydropower station electrical switchgear according to claim 3, characterized in that, The mounting plate and the limiting foot are provided with limiting holes for the positioning sleeve to pass through, so as to fix the insert on the mounting plate.

5. The anti-misoperation interlocking structure for an electrical switchgear in a hydropower station according to claim 1, characterized in that, The elastic element is a helical compression spring, one end of which is fixedly connected to the bottom of the insert, and the other end abuts against the top of the mounting plate.

6. The anti-misoperation interlocking structure for an electrical switchgear in a hydropower station according to claim 1, characterized in that, A limit ring is provided above the positioning sleeve to facilitate the removal of the positioning sleeve and to prevent the sleeve from detaching from the insertion tube.

7. The anti-misoperation interlocking structure for a hydropower station electrical switchgear according to claim 4, characterized in that, The number of the limiting feet and the limiting holes is four, and they are evenly distributed circumferentially on the insert.

8. The anti-misoperation interlocking structure for a hydropower station electrical switchgear according to claim 1, characterized in that, Warning signs are provided on the surface of the insert.

9. The anti-misoperation interlocking structure for a hydropower station electrical switchgear according to claim 1, characterized in that, The insert is also provided with anti-slip protrusions around its perimeter.

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