Safety anti-misoperation structure of capacitor compensation cabinet
By employing mechanical interlocks and a dual limit structure, the problem of accidental opening of the capacitor compensation cabinet is solved, improving safety and reliability, and making it suitable for high-safety-requirement scenarios such as power and chemical industries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽科拓机电设备有限公司
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-19
AI Technical Summary
The doors of existing capacitor compensation cabinets are easily opened by accident, which reduces safety during use.
It adopts a mechanical interlock and double limit structure, including a drive component, a limit component and a sliding plate mechanism, and achieves safe door opening and prevents accidental opening through the operation of key and knob.
It improves the safety and operational reliability of capacitor compensation cabinets, making them suitable for scenarios with high safety requirements, such as power and chemical industries, while reducing maintenance costs and improving management efficiency.
Smart Images

Figure CN224379606U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of compensation cabinets, and in particular to a safety anti-accidental opening structure for a capacitor compensation cabinet. Background Technology
[0002] To mitigate energy waste caused by a low power factor in the power grid and address these adverse factors affecting the production of power supply capacitor compensation cabinets, it is essential to effectively improve the power factor of the power grid. Clearly, it is unreasonable and generally impossible for generators to provide all this reactive power and transmit it over long distances. A more reasonable approach is to generate reactive power where it is needed, i.e., by increasing reactive power compensation equipment and devices.
[0003] In existing capacitor compensation cabinets, the cabinet door is locked by a door lock during use. Once the door lock is unlocked, the cabinet door can be rotated open. The cabinet door is easy to open, which can easily lead to accidental opening and reduce the safety during use. Utility Model Content
[0004] To address the problems mentioned in the background art, this application provides a safe anti-accidental opening structure for capacitor compensation cabinets.
[0005] The safety anti-accidental opening structure for a capacitor compensation cabinet provided in this application adopts the following technical solution:
[0006] A safety anti-accidental opening structure for a capacitor compensation cabinet includes a cabinet body. A door is rotatably mounted on the front side of the cabinet body via a hinge. A fixed box is fixedly connected to the side wall of the door body. A fixed plate corresponding to the fixed box is fixedly connected to the front side of the cabinet body. Two fixed holes are opened on the side of the fixed plate near the fixed box. A slide is slidably mounted in the slide groove. Two fixed rods are fixedly connected to one side of the slide. The ends of the fixed rods away from the slide extend through the side wall of the fixed box and into the fixed holes. A tension spring is provided on the side wall of the fixed rod. One end of the tension spring is fixedly connected to the inner side wall of the slide groove, and the other end of the tension spring is fixedly connected to the side wall of the slide. A drive component for moving the slide is provided inside the fixed box, and a limiting component for limiting the movement of the slide is provided inside the fixed box.
[0007] Preferably, the drive assembly includes a connecting shaft and a cam. One end of the connecting shaft is rotatably connected to the inner sidewall of the slide, and the other end of the connecting shaft passes through the sidewall of the fixed box and is rotatably connected thereto. A cam that works with the slide plate is fixedly sleeved on the sidewall of the connecting shaft.
[0008] Preferably, a key slot is provided at one end of the connecting shaft that passes through the fixed box.
[0009] Preferably, the limiting component includes a limiting cylinder and a limiting rod. The limiting cylinder is fixedly connected to one side of the fixed box. The inside of the limiting cylinder is hollow. A connecting plate is slidably installed inside the limiting cylinder through a guide component. The limiting rod is movably disposed inside the limiting cylinder. The limiting rod passes through the connecting plate and is rotatably connected to it. One end of the limiting rod movably passes through the side wall of the limiting cylinder and the fixed box and contacts the sliding plate. A movable block is fixedly connected to the side wall of the limiting rod. A movable groove for cooperating with the movable block is opened on the side wall of one end of the limiting cylinder. A spring is fixedly connected to the side of the connecting plate away from the sliding plate. The end of the spring away from the connecting plate is fixedly connected to the inner side wall of the limiting cylinder. The limiting rod is located inside the spring.
[0010] Preferably, the guiding component includes a guide block, which is fixedly connected to the side wall of the connecting disc, and the limiting cylinder has a guide groove inside that slides with the guide block.
[0011] Preferably, the end of the limiting rod away from the slide plate moves through the side wall of the limiting cylinder and is fixedly connected to a knob.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] Compared to existing technologies, this new technology solves the safety hazard of accidental opening in traditional capacitor compensation cabinets through mechanical interlocking and dual limit switches, making it particularly suitable for scenarios with high equipment safety requirements, such as power and chemical industries. Its high reliability, low maintenance costs, and strong environmental adaptability can significantly improve the operational safety and management efficiency of power equipment, demonstrating significant engineering application value. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the application;
[0015] Figure 2 This is a cross-sectional structural diagram of the fixing box and limiting cylinder in the embodiment of the application;
[0016] Figure 3 This is an example of the application. Figure 2 A magnified structural diagram at point A;
[0017] Figure 4 This is a structural schematic diagram of the fixing rod and fixing hole in the embodiment of the application;
[0018] Figure 5 This is a schematic diagram of the structure of the limiting component in the embodiment of the application.
[0019] Explanation of reference numerals in the attached drawings: 1. Cabinet body; 2. Door body; 3. Fixed box; 4. Fixed plate; 6. Slide plate; 7. Cam; 8. Connecting shaft; 9. Key slot; 10. Fixed rod; 11. Tension spring; 12. Slide groove; 13. Limit rod; 14. Limit cylinder; 15. Spring; 16. Knob; 17. Connecting plate; 18. Fixed hole; 19. Movable groove; 20. Movable block; 21. Guide groove; 22. Guide block. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0021] This application discloses a safety anti-accidental opening structure for a capacitor compensation cabinet. (Refer to...) Figure 1-5A safety anti-accidental opening structure for a capacitor compensation cabinet includes a cabinet body 1. A door 2 is rotatably mounted on the front side of the cabinet body 1 via a hinge (not shown in the figure). A fixing box 3 is fixedly connected to the side wall of the door 2. A fixing plate 4 corresponding to the fixing box 3 is fixedly connected to the front side of the cabinet body 1. Two fixing holes 18 are opened on the side of the fixing plate 4 near the fixing box 3. A sliding groove 12 is opened inside the fixing box 3. A sliding plate 6 is slidably installed in the sliding groove 12. Two fixing rods 10 are fixedly connected to one side of the sliding plate 6. The end of the fixing rod 10 away from the sliding plate 6 moves through the side wall of the fixing box 3 and extends into the fixing hole. Inside the fixed rod 10, a tension spring 11 is provided on the side wall. One end of the tension spring 11 is fixedly connected to the inner side wall of the slide 12, and the other end of the tension spring 11 is fixedly connected to the side wall of the slide plate 6. A drive assembly for moving the slide plate 6 is provided inside the fixed box 3. The drive assembly includes a connecting shaft 8 and a cam 7. One end of the connecting shaft 8 is rotatably connected to the inner side wall of the slide 12, and the other end of the connecting shaft 8 passes through the side wall of the fixed box 3 and is rotatably connected thereto. A cam 7 for cooperating with the slide plate 6 is fixedly sleeved on the side wall of the connecting shaft 8. A key groove 9 is opened at the end of the connecting shaft 8 that passes through the fixed box 3. The fixed box 3 is equipped with a limiting component for limiting the sliding plate 6. The limiting component includes a limiting cylinder 14 and a limiting rod 13. The limiting cylinder 14 is fixedly connected to one side of the fixed box 3. The interior of the limiting cylinder 14 is hollow. A connecting plate 17 is slidably installed inside the limiting cylinder 14 through a guide component. The limiting rod 13 is movably disposed inside the limiting cylinder 14. The limiting rod 13 passes through the connecting plate 17 and is rotatably connected to it. One end of the limiting rod 13 movably passes through the side wall of the limiting cylinder 14 and the fixed box 3 and then contacts the sliding plate 6. A movable block 20 is fixedly connected to the side wall of the limiting rod 13. A movable groove 19 is provided on the side wall of one end of the limiting cylinder 14 to cooperate with the movable block 20. A spring 15 is fixedly connected to the side of the connecting plate 17 away from the slide plate 6. The end of the spring 15 away from the connecting plate 17 is fixedly connected to the inner side wall of the limiting cylinder 14. The limiting rod 13 is located inside the spring 15. The guide assembly includes a guide block 22. The guide block 22 is fixedly connected to the side wall of the connecting plate 17. A guide groove 21 is provided inside the limiting cylinder 14 to slide with the guide block 22. The end of the limiting rod 13 away from the slide plate 6 moves through the side wall of the limiting cylinder 14 and is fixedly connected to a knob 16.
[0022] The implementation principle of the safety anti-accidental opening structure of the capacitor compensation cabinet in this application embodiment is as follows: Under normal conditions, one end of the fixing rod 10 is inserted into the fixing hole 18 on the fixing plate 4 to form a mechanical lock. The tension spring 11 provides a continuous locking force to ensure that the door 2 cannot be easily opened. The cam 7 remains in a vertical state, and at the same time, one end of the limiting rod 13 abuts against the side wall of the slide plate 6 to further lock the position of the slide plate 6 and prevent the fixing rod 10 from loosening due to vibration or other factors. At this time, no key is inserted into the key slot 9, and the connecting shaft 8 cannot rotate, forming a double lock. When unlocking, pull the limit rod 13 by turning the knob 16. The limit rod 13 can drive the connecting plate 17 and the movable block 20 on it to move synchronously, moving the movable block 20 out of the movable slot 19. Then, turn the knob 16 to drive the limit rod 13 and the movable block 20 to rotate, so that the movable block 20 rotates 90 degrees. After releasing the knob 16, under the elastic force of the spring 15, the movable block 20 can be tightly attached to the outer wall of the limit cylinder 14, and at the same time, the position of the limit rod 13 can be fixed, thereby releasing the limit on the slide plate 6. When the limit rod 13 rotates, the guide block 22 on the connecting plate 17 slides in the guide slot 21, preventing the connecting plate 17 from rotating with the limit rod 13. Insert the special key into the key slot 9, turn the connecting shaft 8 to rotate the cam 7. The clockwise rotation of the cam 7 can drive the slide plate 6 to move to the right. The slide plate 6 can drive the fixed rod 10 to move, so that one end of the fixed rod 10 is completely disengaged from the fixed hole 18. At this time, the door 2 can be opened normally through the hinge. The entire unlocking process requires simultaneous operation of the key and knob 16 to avoid accidental unlocking due to a single touch.
[0023] In this process, mechanical interlocking and dual limit switches solve the safety hazard of accidental opening in traditional capacitor compensation cabinets, making them particularly suitable for scenarios with high equipment safety requirements, such as power and chemical industries. Their high reliability, low maintenance costs, and strong environmental adaptability can significantly improve the operational safety and management efficiency of power equipment, demonstrating significant engineering application value.
[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0025] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A safety anti-accidental opening structure for a capacitor compensation cabinet, characterized in that: The system includes a cabinet (1), a door (2) which is hinged to the front of the cabinet (1), a fixed box (3) which is fixedly connected to the side wall of the door (2), a fixed plate (4) corresponding to the fixed box (3) which is fixedly connected to the front of the cabinet (1), two fixing holes (18) are provided on the side of the fixed plate (4) near the fixed box (3), a sliding groove (12) is provided inside the fixed box (3), a sliding plate (6) is slidably installed in the sliding groove (12), and two fixing rods (10) are fixedly connected to one side of the sliding plate (6). The end of the fixing rod (10) away from the slide plate (6) extends through the side wall of the fixing box (3) and into the fixing hole (18). A tension spring (11) is provided on the side wall of the fixing rod (10). One end of the tension spring (11) is fixedly connected to the inner side wall of the slide groove (12), and the other end of the tension spring (11) is fixedly connected to the side wall of the slide plate (6). A driving component for driving the slide plate (6) to move is provided in the fixing box (3), and a limiting component for limiting the slide plate (6) is provided in the fixing box (3).
2. The safety anti-misoperation opening structure of the capacitance compensation cabinet according to claim 1, characterized in that: The drive assembly includes a connecting shaft (8) and a cam (7). One end of the connecting shaft (8) is rotatably connected to the inner sidewall of the slide (12), and the other end of the connecting shaft (8) passes through the sidewall of the fixed box (3) and is rotatably connected to it. A cam (7) for use with the slide plate (6) is fixedly sleeved on the sidewall of the connecting shaft (8).
3. The safety anti-misoperation opening structure of the capacitance compensation cabinet according to claim 2, characterized in that: The connecting shaft (8) has a key slot (9) at one end that passes through the fixed box (3).
4. The safe anti-error opening structure of the capacitance compensation cabinet according to claim 1, characterized in that: The limiting assembly includes a limiting cylinder (14) and a limiting rod (13). The limiting cylinder (14) is fixedly connected to one side of the fixed box (3). The interior of the limiting cylinder (14) is hollow. A connecting plate (17) is slidably installed inside the limiting cylinder (14) through a guide assembly. The limiting rod (13) is movably disposed inside the limiting cylinder (14). The limiting rod (13) passes through the connecting plate (17) and is rotatably connected to it. One end of the limiting rod (13) movably passes through the limiting cylinder (14) and the fixed box (3). The side wall of the box (3) is in contact with the slide plate (6). A movable block (20) is fixedly connected to the side wall of the limiting rod (13). A movable groove (19) that works with the movable block (20) is opened on the side wall of one end of the limiting cylinder (14). A spring (15) is fixedly connected to the side of the connecting plate (17) away from the slide plate (6). The end of the spring (15) away from the connecting plate (17) is fixedly connected to the inner side wall of the limiting cylinder (14). The limiting rod (13) is located inside the spring (15).
5. The safety anti-misoperation opening structure of the capacitance compensation cabinet according to claim 4, characterized in that: The guiding assembly includes a guide block (22), which is fixedly connected to the side wall of the connecting disc (17), and the limiting cylinder (14) has a guide groove (21) that slides with the guide block (22).
6. The safety anti-accidental opening structure of a capacitor compensation cabinet according to claim 4, characterized in that: The end of the limiting rod (13) away from the sliding plate (6) is movably penetrated through the side wall of the limiting cylinder (14) and is fixedly connected with a knob (16).