Hot plug type intelligent capacitor
By designing plug-and-release connection sleeves and arc extinguishing sleeves for hot-swap smart capacitors, the problem of poor stability during plug-and-release process is solved, achieving higher plug-and-connect stability and extended equipment service life.
Patent Information
- Application Number
- CN202520514272.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Hot-swap smart capacitors have poor stability during plug-in and unplugging, which can easily lead to arc phenomena and irreversible ablation damage, shortening the service life of the equipment.
A plug-in connection sleeve including an outer ring sleeve, an inner ring sleeve and an intermediate ring sleeve is designed. The limit sliding tenon insertion is achieved through the slide groove and the slider. Combining the ceramic fiber composite material and the metal grid structure, a retractable arc extinguishing sleeve is formed, and the stability of the plug-in small capacitor is strengthened by connecting the restraint head and the rubber snap ring.
It effectively improves the stability of the plug-in small capacitors, reduces the connection loosening problem caused by shaking, prevents ablation damage caused by arcs, extends the service life of the equipment and ensures the stability of capacitor performance.
Smart Images
Figure CN222801608U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric power equipment, and more specifically to a hot-pluggable intelligent capacitor. Background Art
[0002] Hot-swappable smart capacitors have the advantages of convenient maintenance and quick replacement. There are multiple small capacitors in the hot-swappable capacitor. When it is replaced, the staff only needs to unplug the damaged capacitor from the connection and insert another new capacitor. However, there is a lack of an auxiliary device between the small capacitor and the connection of the hot-swappable smart capacitor. In the actual smart capacitor replacement and maintenance operation, when the operation and maintenance personnel pull out the capacitor from the connector, there is a certain friction between the capacitor and the slot, and the plug-in space is relatively narrow. The capacitor is very easy to shake during the operation. Due to the lack of auxiliary devices, this shaking will cause the capacitor pin and the connector slot contact point to separate and contact instantly, causing strong charge transfer, and then produce arc phenomenon, which is easy to cause irreversible ablation damage, shorten the service life of the equipment, and reduce the performance of the capacitor. In view of this, we propose a hot-swappable smart capacitor. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a hot-swappable intelligent capacitor to solve the technical problem of poor stability when the current hot-swappable capacitor is plugged in or out of an external small capacitor.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a hot-swappable intelligent capacitor, comprising a capacitor body, a body insertion end is provided on one side of the capacitor body, a PCB plug-in board is provided inside the capacitor body, a plurality of small plug-in capacitors are hot-plugged on the PCB plug-in board, a plug-in connection sleeve is provided between the small plug-in capacitor and the PCB plug-in board, the plug-in connection sleeve is composed of an outer ring sleeve, an inner ring sleeve and a plurality of intermediate ring sleeves between the outer ring sleeve and the inner ring sleeve, the outer ring sleeve, the inner ring sleeve and the intermediate ring sleeve are mutually limited and slidably inserted, a connection protection structure is provided on the inner wall portion of the plug-in connection sleeve, a connection constraint head is installed on the inner wall of the inner ring sleeve, two stable connection sleeves are provided on one side of the connection constraint head, two groups of connection stabilizing structures are provided inside the stable connection sleeve, the connection stabilizing structure includes a rotating block inside, and two horizontal groups of multiple rotating blocks are fitted and stabilized with the plug-in part of the small capacitor.
[0005] Preferably, the inner walls of the outer ring sleeve, the inner ring sleeve and the middle ring sleeve are all provided with cavities, and the connecting protection structure is located on the inner periphery of the cavity. The connecting protection structure is composed of cross plates and ring plates that are staggered and connected, the cross plates are horizontal straight bars, and the ring plates are vertical annular structures.
[0006] Preferably, a hole is provided on the connection restraint head for the insertion part of the small capacitor to pass through, and a rubber clamping ring for fixing the neck portion of one end of the small capacitor is arranged on one side of the connection restraint head.
[0007] Preferably, the connection stabilizing structure includes a plurality of inner cavities, which are opened inside the stabilizing connection sleeve and distributed in a circular array. A central axis is rotatably connected inside the inner cavity, and the outer periphery of the central axis is fixed to a rotating block, and the rotating block can rotate and move inside the inner cavity.
[0008] Preferably, one side of the rotating block is set as a gradual arc surface, the diameter between the gradual arc surface and the rotating axis increases gradually, and the outer periphery of the gradual arc surface contacts the outer side of the plug-in part for plugging in the small capacitor.
[0009] Preferably, elastic latex columns are connected to both sides of the rotating block, and the ends of the elastic latex columns are fixed to the inner wall of the connecting stabilizing structure.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. The utility model realizes the connection between the plug-in small capacitor and the PCB plug-in board through a plug-in connection sleeve. The plug-in connection sleeve is composed of an outer ring sleeve, an inner ring sleeve and an intermediate ring sleeve. The sliding groove and the slider are used to realize the limited sliding tenon insertion between them. The sleeve can be stretched and retracted for storage, and can flexibly adapt to different installation space requirements. The connection constraint head and the rubber clamp ring on the inner wall of the inner ring sleeve can effectively clamp the neck of one end of the plug-in small capacitor. The elasticity of the rubber clamp ring further enhances the stability of the connection, ensuring that the plug-in small capacitor is firmly connected in the capacitor body, and reducing the problem of loose connection caused by shaking.
[0012] 2. The utility model also adopts a plug-in connection sleeve, wherein the outer ring sleeve, the inner ring sleeve and the middle ring sleeve are all made of ceramic fiber composite materials. This material is resistant to high temperature, insulated and has good arc extinguishing performance. The connection protection structure of the inner wall is composed of staggered metal horizontal plates and ring plates to form a metal grid, which can divide the arc into multiple small segments to accelerate the arc extinguishing. The combination of the two forms a retractable arc extinguishing sleeve during the plug-in process, which effectively protects the connection part between the plug-in small capacitor and the capacitor body, prevents ablation damage caused by the arc, prolongs the service life of the equipment, and ensures the stability of the capacitor performance.
[0013] 3. The utility model also greatly improves the plug-in stability by connecting two stable connecting sleeves on one side of the constraint head and the internal connection stabilizing structure. The multiple inner cavities are distributed in a circular array, and the central axis of the internal rotating connection and the connected rotating block have a cleverly designed gradient arc surface. When using small capacitors with different diameter plug-in parts or facing slight differences in the plug-in parts of the small capacitors during the production process, the largest diameter part of the gradient arc surface will first contact the plug-in part of the small capacitor to form a minimum diameter gap to avoid shaking caused by the small plug-in part of the small capacitor. During the insertion process, the gradient arc surface will rotate and move to a state that it fits the plug-in part exactly. With the pulling force of the elastic latex column and the limiting of two groups of multiple rotating blocks, two-point constraints are generated on the plug-in part of the small capacitor to ensure that its insertion position is stable without bending or twisting, thereby improving the stability and applicability during hot plugging. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the utility model in the state of hot plugging a small capacitor;
[0017] Figure 4 It is a half-section structural schematic diagram of the plug-in connection sleeve in the utility model;
[0018] Figure 5 It is a structural schematic diagram of the connection protection structure in the utility model;
[0019] Figure 6 It is a schematic diagram of the half-section structure of the stable connecting sleeve in the utility model.
[0020] Explanation of the numbers in the figure: 1. Capacitor body; 2. Body insertion end; 3. PCB plug-in board; 4. Plug in small capacitor; 5. Outer ring sleeve; 6. Inner ring sleeve; 7. Middle ring sleeve; 8. Connection protection structure; 9. Connection constraint head; 10. Stable connection sleeve; 11. Connection stable structure; 12. Rubber clamp; 801. Cross plate; 802. Ring plate; 111. Inner cavity; 112. Central axis; 113. Rotating block; 114. Gradient arc surface; 115. Elastic latex column. DETAILED DESCRIPTION
[0021] This hot-swappable smart capacitor is often used in some occasions that require a large capacity but relatively low frequency characteristics and accuracy, such as power filtering, energy storage and other circuit applications. Most of the small hot-plug capacitors inside are cylindrical electrolytic capacitors. The improvements for this type of hot-swappable smart capacitor are as follows;
[0022] like Figures 1 to 6 As shown, the utility model relates to a hot-swappable intelligent capacitor, comprising a capacitor body 1, a side cover is arranged on one side of the capacitor body 1, the side cover is connected to the inside, a main body insertion end 2 is arranged on one side of the capacitor body 1, a PCB plug board 3 is arranged inside the capacitor body 1, the capacitor body 1 can be selected as an existing explosion-proof safety power capacitor, and other components are also arranged inside it. This is the prior art, so it will not be repeated here. A plurality of small plug-in capacitors 4 are hot-swapped on the PCB plug board 3, and a plug-in connection sleeve is arranged between the small plug-in capacitor 4 and the PCB plug board 3. The plug-in connection sleeve is composed of an outer ring sleeve 5, an inner ring sleeve 6, and a plurality of intermediate connections between the outer ring sleeve 5 and the inner ring sleeve 6. The outer ring sleeve 5, the inner ring sleeve 6 and the middle ring sleeve 7 are mutually limited and slidably inserted, and the limited sliding is achieved by a slide groove and a slider, thereby achieving stretching and shrinking storage to reduce its own volume. A connecting constraint head 9 is installed on the inner wall of the inner ring sleeve 6, and a hole is provided on the connecting constraint head 9 for the plug-in part of the small capacitor 4 to pass through. A rubber clamping ring 12 is arranged on one side of the connecting constraint head 9 to fix the neck portion of one end of the plug-in small capacitor 4. The rubber clamping ring 12 is elastic. The plug-in small capacitor 4 is an electrolytic capacitor, and the end area where the electrolytic capacitor is inserted has an annular reinforced neck, and the rubber clamping ring 12 is inserted into it through its elasticity to enhance the stability of the connection.
[0023] In order to facilitate plugging and unplugging of the connecting sleeve, a connecting protection structure 8 is provided on the inner wall portion. The outer ring sleeve 5, the inner ring sleeve 6 and the middle ring sleeve 7 are all made of ceramic fiber composite materials. The inner walls of the outer ring sleeve 5, the inner ring sleeve 6 and the middle ring sleeve 7 are all provided with cavities. The connecting protection structure 8 is located at the inner periphery of the cavity. The connecting protection structure 8 is composed of cross plates 801 and ring plates 802 that are staggered and connected. The cross plates 801 are horizontal straight bars, and the ring plates 802 are vertical ring structures. The cross plates 801 and the ring plates 802 are both made of metal.
[0024] Working principle: A metal grid is formed between multiple horizontal plates 801 and ring plates 802. When an arc is generated, the metal grid can divide the arc into multiple small segments to accelerate the extinction of the arc. Combined with the outer ring sleeve 5, the inner ring sleeve 6 and the middle ring sleeve 7, combined with the fact that it is made of high-temperature resistant, insulating and good arc-extinguishing performance ceramic fiber composite materials, a shell-telescopic arc-extinguishing sleeve is further formed to protect the plug-in process.
[0025] In order to further improve the plug-in stability, two stable connecting sleeves 10 are provided on one side of the connecting constraint head 9, and two groups of connecting stable structures 11 are provided inside the stable connecting sleeve 10. The connecting stable structure 11 includes multiple inner cavities 111. The multiple inner cavities 111 are opened inside the stable connecting sleeve 10 and are distributed in a circular array. The inner cavity 111 is rotatably connected with a central axis 112, and the outer periphery of the central axis 112 is connected with a rotating block 113. The rotating block 113 can rotate and move inside the inner cavity 111, and the two horizontal groups of multiple rotating blocks 113 are fitted and stabilized with the plug-in part of the small capacitor 4. One side of the rotating block 113 is set as a gradual arc surface 114. The diameter between the gradual arc surface 114 and the rotation axis is gradually increased, and the outer periphery of the gradual arc surface 114 contacts the outer side of the plug-in part of the small capacitor 4. Elastic latex columns 115 are connected to both sides of the rotating block 113, and the ends of the elastic latex columns 115 are fixed to the inner wall of the connecting stable structure 11.
[0026] The design of the gradual arc surface 114 has the advantage that when using a plug-in small capacitor 4 with different plug-in diameters or during the production process, there will be some differences in the plug-in part of the plug-in small capacitor 4, such as a small diameter difference. In this case, since the increasing direction of the diameter between the gradual arc surface 114 and the rotation axis is from small to large in the insertion direction, and the outer periphery of the largest diameter part will first contact the plug-in part of the plug-in small capacitor 4, multiple gradual arc surfaces 114 can form a minimum diameter gap, which is smaller than the plug-in part of the plug-in small capacitor 4 under normal circumstances. In order to avoid smaller situations during the production process, during the insertion process, the gradient arc surface 114 will be gradually driven to rotate and move, and rotate and move to a state where it fits exactly with the plug-in part. At this time, the elastic latex column 115 at one end will have a pulling force to keep the gradient arc surface 114 in a taut state, and then cooperate with the two groups of multiple rotating blocks 113 to limit the insertion, so as to generate two-point constraints on the plug-in part of the small capacitor 4, ensuring its insertion position is stable, and no bending or twisting will occur, thereby further improving the stability during hot plugging and unplugging, avoiding deviation, and having high applicability.
[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.
Claims
1. A hot-swappable smart capacitor, characterized in that: The invention comprises a capacitor body (1), wherein one side of the capacitor body (1) is provided with a body insertion end (2), a PCB plug board (3) is provided inside the capacitor body (1), a plurality of plug-in small capacitors (4) are hot-pluggable on the PCB plug board (3), a plug-in connection sleeve is provided between the plug-in small capacitors (4) and the PCB plug board (3), the plug-in connection sleeve is composed of an outer ring sleeve (5), an inner ring sleeve (6), and a plurality of intermediate ring sleeves (7) between the outer ring sleeve (5) and the inner ring sleeve (6), the outer ring sleeve (5), the inner ring sleeve (6) and The intermediate ring sleeves (7) are mutually limited and slidably inserted, the inner wall portion of the plug-in connection sleeve is provided with a connection protection structure (8), the inner wall of the inner ring sleeve (6) is installed with a connection constraint head (9), one side of the connection constraint head (9) is provided with two stable connection sleeves (10), the inside of the stable connection sleeve (10) is provided with two groups of connection stabilizing structures (11), the connection stabilizing structures (11) include rotating blocks (113), and the two horizontal groups of multiple rotating blocks (113) are fitted and stabilized with the plug-in portion of the small capacitor (4).
2. A hot-swappable smart capacitor according to claim 1, characterized in that: The outer ring sleeve (5), the inner ring sleeve (6) and the middle ring sleeve (7) are made of ceramic fiber composite materials and have inner walls with cavities. The connection protection structure (8) is located at the inner periphery of the cavity. The connection protection structure (8) is composed of cross plates (801) and ring plates (802) that are connected in an interlaced manner. The cross plates (801) are transverse straight strips, and the ring plates (802) are vertical annular structures.
3. A hot-swappable smart capacitor according to claim 2, characterized in that: The connection restraining head (9) is provided with a hole through which the plug-in portion of the small capacitor (4) passes, and a rubber clamping ring (12) for clamping a neck portion at one end of the plug-in small capacitor (4) is arranged on one side of the connection restraining head (9).
4. The hot-swappable smart capacitor according to claim 3, characterized in that: The connection stabilizing structure (11) comprises a plurality of inner cavities (111), the plurality of inner cavities (111) being opened inside the stabilizing connection sleeve (10) and distributed in a ring array, a central axis (112) being rotatably connected inside the inner cavity (111), the outer periphery of the central axis (112) being fixed to a rotating block (113), and the rotating block (113) being capable of rotating and moving inside the inner cavity (111).
5. The hot-swappable smart capacitor according to claim 4, characterized in that: One side of the rotating block (113) is provided with a gradually changing arc surface (114), the diameter between the gradually changing arc surface (114) and the rotating axis increases gradually, and the outer periphery of the gradually changing arc surface (114) contacts the outer side of the plug-in portion for plugging in the small capacitor (4).
6. The hot-swappable smart capacitor according to claim 5, characterized in that: Both sides of the rotating block (113) are connected to elastic latex columns (115), and the ends of the elastic latex columns (115) are fixed to the inner wall of the connection stabilizing structure (11).