Low-voltage capacitor protection structure

The design of the limiting seat and plug structure solves the problem of the inability to adjust the support plate, and realizes the optimized use of space in the low-voltage capacitor cabinet.

CN224006392UActive Publication Date: 2026-03-17NANTONG SUNION ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In existing low-voltage capacitor banks, the support plates are fixedly welded and cannot be adjusted, resulting in wasted space.

Method used

An adjustable limit seat and insert rod structure were designed. Through the cooperation of the lever and spring, the support plate can be adjusted and fixed, thereby improving stability.

Benefits of technology

It enables flexible adjustment of the position and number of support plates, optimizes the space utilization inside the capacitor cabinet, and avoids space waste.

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Abstract

The utility model discloses a low-voltage capacitor protection structure, and particularly relates to the technical field of capacitors, the low-voltage capacitor protection structure comprises a low-voltage capacitor cabinet main body, a plurality of first limiting seats are welded on one side wall in the low-voltage capacitor cabinet main body at equal intervals, and a plurality of second limiting seats are welded on the other side wall in the low-voltage capacitor cabinet main body at equal intervals; limiting blocks are placed on the first limiting seat and the second limiting seat, a supporting plate is fixedly arranged between the two limiting blocks, a mounting groove is formed in the first limiting seat, an inserting rod is movably arranged in the mounting groove, a limiting groove is formed in one limiting block, a poke rod is fixedly connected to the outer side of the inserting rod, and the poke rod is fixedly connected to the outer side of the poke rod. According to the arrangement of the structure, the positions and the number of the supporting plates can be adjusted according to the specification or the number of the placed low-voltage capacitors, so that the space in the low-voltage capacitor cabinet main body is reasonably utilized, and waste of the space is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and more specifically, to a low-voltage capacitor protection structure. Background Technology

[0002] A power capacitor is a capacitor used in power systems and electrical equipment. Any two metal conductors separated by an insulating medium constitute a capacitor. The capacitance of a capacitor is determined by its geometric dimensions and the properties of the insulating medium between the plates. When a capacitor is used under alternating current (AC) voltage, its capacitance is often expressed in terms of reactive power, with units of VAR or kilovar.

[0003] A search revealed that patent publication number CN219371735U discloses a low-voltage capacitor cabinet with a leakage protection structure, comprising a low-voltage capacitor cabinet body, fastening rods, a top protective plate, and a safety door. The safety door is hinged and fixed to one side of the front of the low-voltage capacitor cabinet body. A control box is embedded in the top of the safety door. Fastening rods are fixed to the center of the front and rear ends of both sides of the low-voltage capacitor cabinet body via fixed lugs. Through the control box, warning indicator, temperature detector, and humidity detector, the temperature and humidity values ​​can be preset via the control box during operation. When the temperature and humidity detectors detect that the temperature or humidity value inside the low-voltage capacitor cabinet body exceeds the set value, the control box automatically controls the warning indicator to issue an alarm, prompting timely measures to prevent safety accidents caused by high temperature or excessive moisture inside the low-voltage capacitor cabinet body. The inventors discovered the following problems with the existing technology during the development of this utility model:

[0004] When in use, the device can place low-voltage capacitors using a support plate. However, the support plate for placing the low-voltage capacitors is fixedly welded inside the main body of the low-voltage capacitor cabinet. The position of the support plate cannot be adjusted according to the placed low-voltage capacitors, thus making reasonable use of the space inside the main body of the low-voltage capacitor cabinet and resulting in a waste of space inside the main body of the low-voltage capacitor cabinet.

[0005] Therefore, a low-voltage capacitor protection structure is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a low-voltage capacitor protection structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage capacitor protection structure, comprising a low-voltage capacitor cabinet body, wherein a plurality of first limiting seats are welded at equal intervals on one side wall of the low-voltage capacitor cabinet body, and a plurality of second limiting seats are welded at equal intervals on the other side wall of the low-voltage capacitor cabinet body, limiting blocks are placed on both the first and second limiting seats, a support plate is fixedly arranged between two of the limiting blocks, an installation groove is opened on the first limiting seat, a plug rod is movably arranged in the installation groove, a limiting groove is opened on one of the limiting blocks, one end of the plug rod is inserted into the limiting groove, a toggle rod is fixedly connected to the outside of the plug rod, and a spring is sleeved on the outside of the plug rod.

[0008] Preferably, a limiting groove is formed on the upper surface of the first limiting seat above the mounting groove, the toggle rod is slidably connected in the limiting groove, and a toggle button is fixedly connected to the top of the toggle rod.

[0009] Preferably, the front surface of the low-voltage capacitor cabinet is hinged to a safety door, the safety door is fitted with a transparent glass window, and a handle is bolted to the safety door.

[0010] Preferably, the low-voltage capacitor cabinet body has several openings at equal intervals on both sides, and each of the openings has a venting chamber fixedly installed inside.

[0011] Preferably, the bottom wall of the low-voltage capacitor cabinet body is symmetrically provided with two fixed feet, and a hydraulic push rod is provided between the two fixed feet and the bottom wall of the low-voltage capacitor cabinet body. Two telescopic rods are symmetrically provided between each end of the two fixed feet and the bottom wall of the low-voltage capacitor cabinet body.

[0012] Preferably, each of the two fixed feet is provided with a rubber pad to increase the friction between the ground and the fixed feet, and the main body of the low-voltage capacitor cabinet is provided with four casters located between the two fixed feet.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] Compared with existing technologies, by adding several first and second limiting seats, the support plate can be positioned and limited. At the same time, by spring pressing the actuating rod, the actuating rod moves the insertion rod toward the limiting groove opened on the limiting block and inserts into the limiting groove, thereby limiting and fixing the placed support plate and improving the stability of the support plate. This structure can adjust the position and number of support plates according to the specifications or quantity of the low-voltage capacitors placed, thereby improving the rational use of space inside the low-voltage capacitor cabinet and avoiding space waste. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the present utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the low-voltage capacitor cabinet of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the support plate of this utility model.

[0018] Figure 4 This is a partial three-dimensional cross-sectional view of the present invention.

[0019] The attached diagram is labeled as follows: 1. Low-voltage capacitor cabinet body; 2. Safety door; 3. Transparent glass window; 4. Handle; 5. Opening; 6. Ventilation chamber; 7. Fixed base; 8. Hydraulic push rod; 9. Rubber pad; 10. Telescopic rod; 11. Caster wheel; 12. First limit seat; 13. Second limit seat; 14. Limit block; 15. Support plate; 16. Limit groove; 17. Mounting groove; 18. Insert rod; 19. Toggle rod; 20. Spring; 21. Toggle button. Detailed Implementation

[0020] 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. Example 1

[0021] As attached Figures 1 to 4 The low-voltage capacitor protection structure shown includes a low-voltage capacitor cabinet body 1. Several first limiting seats 12 are welded at equal intervals on one side wall of the low-voltage capacitor cabinet body 1. Several second limiting seats 13 are welded at equal intervals on the other side wall of the low-voltage capacitor cabinet body 1. Limiting blocks 14 are placed on both the first limiting seats 12 and the second limiting seats 13. A support plate 15 is fixedly arranged between the two limiting blocks 14. At the same time, an installation groove 17 is opened on the first limiting seat 12. Then, a plug rod 18 is movably arranged in the installation groove 17. A limiting groove 16 is opened on one of the limiting blocks 14, and one end of the plug rod 18 is inserted into the limiting groove 16. Then, a toggle rod 19 is fixedly connected to the outside of the plug rod 18. At the same time, a spring 20 is sleeved on the outside of the plug rod 18. A limiting slide groove is opened on the upper surface of the first limiting seat 12 and above the installation groove 17. Then, the toggle rod 19 is slidably connected in the limiting slide groove. Finally, a toggle button 21 is fixedly connected to the top of the toggle rod 19.

[0022] In use, the device can be operated by first pulling the lever 19 and the insertion rod 18 using the toggle button 21, then placing the support plate 15 between the first limiting seat 12 and the second limiting seat 13. Then, the toggle button 21 is released, at which point the spring 20 compresses the lever 19, causing it to move. Moving the lever 19 then moves the insertion rod 18 towards the limiting groove 16 on the limiting block 14, where it is inserted, thus limiting and fixing the support plate 15 and improving its stability. In actual use, the position and number of support plates 15 can be adjusted according to the specifications or quantity of the low-voltage capacitors placed, thereby improving the rational use of space within the low-voltage capacitor cabinet body 1 and avoiding space waste. Example 2

[0023] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:

[0024] In a preferred embodiment, a safety door 2 is hinged to the front surface of the low-voltage capacitor cabinet body 1. A transparent glass window 3 is then installed on the surface of the safety door 2, and a handle 4 is bolted to the surface of the safety door 2. Finally, a safety lock is bolted to one side of the surface of the safety door 2. The safety door 2 can be locked to the low-voltage capacitor cabinet body 1 by means of the safety lock.

[0025] In a preferred embodiment, several openings 5 ​​are equally spaced on both sides of the low-voltage capacitor cabinet body 1. A ventilated cavity 6 is fixedly installed in each of the openings 5. Two fixed feet 7 are symmetrically arranged on the bottom wall of the low-voltage capacitor cabinet body 1. A hydraulic push rod 8 is installed between the two fixed feet 7 and the bottom wall of the low-voltage capacitor cabinet body 1. Two telescopic rods 10 are symmetrically arranged between the two ends of the two fixed feet 7 and the bottom wall of the low-voltage capacitor cabinet body 1. A rubber pad 9 is installed on the bottom wall of each of the two fixed feet 7. The rubber pad 9 increases the friction between the ground and the fixed feet 7. Finally, four casters 11 are installed on the bottom wall of the low-voltage capacitor cabinet body 1, located between the two fixed feet 7. Furthermore, when the entire device needs to be moved and adjusted, the four casters 11 can be used to move and adjust the entire device. After the device is moved to a suitable position, the free end of the hydraulic push rod 8 can be used to push the fixed feet 7 downwards, causing the rubber pad 9 on the bottom wall of the fixed feet 7 to contact the ground, thereby achieving the limiting and fixing of the entire device.

[0026] The working process of this utility model is as follows: First, the entire device is moved and adjusted by setting four universal wheels 11. After the device is moved to a suitable position, the fixed foot 7 can be pushed down by the free end of the hydraulic push rod 8, so that the rubber pad 9 set on the bottom wall of the fixed foot 7 contacts the ground, thereby achieving the limitation and fixation of the entire device. At the same time, the heat in the main body 1 of the low voltage capacitor cabinet is dissipated through the vent 6 set at the opening 5.

[0027] When the position of the support plate 15 needs to be adjusted and fixed, first pull the lever 19 and the insertion rod 18 by using the toggle button 21. Then place the support plate 15 between the first limiting seat 12 and the second limiting seat 13. Then release the toggle button 21. At this time, the spring 20 will squeeze the lever 19, causing the lever 19 to move. Then, by moving the lever 19, the insertion rod 18 will move closer to the limiting groove 16 opened on the limiting block 14 and be inserted into the limiting groove 16, thereby limiting and fixing the placed support plate 15 and improving the stability of the support plate 15. Finally, the low-voltage capacitor can be installed on the support plate 15. Finally, close the safety door 2 connected to the hinge on the front surface of the low-voltage capacitor cabinet body 1. The above is the working principle of this low-voltage capacitor protection structure.

Claims

1. A low voltage capacitor protection structure comprising a low voltage capacitor cabinet body (1), characterized in that: The low-voltage capacitor cabinet body (1) is welded with a plurality of first limiting seats (12) on one side wall, and a plurality of second limiting seats (13) are welded on the other side wall, the first limiting seat (12) and the second limiting seat (13) are provided with a limiting block (14), and the two limiting blocks (14) are fixedly provided with a supporting plate (15), the first limiting seat (12) is provided with an installation slot (17), the installation slot (17) is movably provided with a plug rod (18), one of the limiting blocks (14) is provided with a limiting slot (16), one end of the plug rod (18) is inserted into the limiting slot (16), the plug rod (18) is fixedly connected with a push rod (19), and the plug rod (18) is provided with a spring (20).

2. The low voltage capacitor protection structure of claim 1, wherein: The first limiting seat (12) is provided with a limiting sliding groove on the upper surface and above the installation slot (17), the push rod (19) is slidably connected in the limiting sliding groove, and the push rod (19) is fixedly connected with a push button (21) at the top end.

3. The low voltage capacitor protection structure of claim 1, wherein: The front surface of the low-voltage capacitor cabinet body (1) is hingedly connected with a safety door (2), the surface of the safety door (2) is provided with a transparent glass window (3), and the surface of the safety door (2) is boltedly connected with a handle (4).

4. The low voltage capacitor protection structure of claim 1, wherein: The two side walls of the low-voltage capacitor cabinet body (1) are provided with a plurality of through openings (5) at equal intervals, and a plurality of air ventilation cavities (6) are fixedly installed in the through openings (5).

5. The low voltage capacitor protection structure of claim 1, wherein: The bottom wall of the low-voltage capacitor cabinet body (1) is provided with two fixed feet (7) symmetrically, and a hydraulic push rod (8) is arranged between the two fixed feet (7) and the bottom wall of the low-voltage capacitor cabinet body (1).

6. The low voltage capacitor protection structure of claim 5, wherein: The bottom wall of the low-voltage capacitor cabinet body (1) is provided with two fixed feet (7) symmetrically, and a hydraulic push rod (8) is arranged between the two fixed feet (7) and the bottom wall of the low-voltage capacitor cabinet body (1). The bottom wall of the low-voltage capacitor cabinet body (1) is provided with two fixed feet (7) symmetrically, and a hydraulic push rod (8) is arranged between the two fixed feet (7) and the bottom wall of the low-voltage capacitor cabinet body (1).

Citation Information

Patent Citations

  • Low-voltage capacitor cabinet with leakage protection structure

    CN219371735U