Connecting unit, capacitor and power capacitance compensation device

Abstract

The utility model discloses a connection unit, a capacitor and a power capacitance compensation device, and aims to solve the problems of unreliable connection, tedious installation and disassembly, insufficient structural strength and the like of a traditional capacitor connection mode. By designing the connecting unit comprising the first connecting piece and the second connecting piece and utilizing accurate positioning of the limiting column and the limiting arm, stable connection between the capacitor and the external equipment is realized. And meanwhile, the design of the tripping assembly is introduced, so that the connecting unit can be easily detached by rotating the knob, and the mounting and detaching efficiency is greatly improved. In addition, the structural strength of the connecting units is enhanced through the integrally-formed limiting columns and the ingenious protrusion design, and the stability of the capacitor in the long-term use process is ensured. The connecting unit is not only suitable for capacitors, but also widely suitable for various electrical devices, and the overall reliability and maintenance convenience of the electrical devices are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of technology, specifically to a connection unit, a capacitor, and a power capacitor compensation device. Background Technology

[0002] In power systems, capacitors, as crucial reactive power compensation components, play an irreplaceable role in improving the power factor of power networks, reducing line losses, and enhancing voltage quality. Traditional capacitor connection methods often employ bolting, welding, or simple plug-in structures, which have several shortcomings in practical applications. While bolting and welding offer high connection strength, the installation and disassembly processes are cumbersome, requiring specialized tools and considerable time, hindering rapid maintenance and replacement of power equipment. This inefficiency is particularly pronounced during emergency fault handling or equipment upgrades.

[0003] While the simple plug-in structure improves the convenience of installation and disassembly to some extent, it is prone to loosening due to vibration, temperature changes, and other factors during long-term use, thus affecting the stable operation of the capacitor. Furthermore, the connection strength of the plug-in structure is relatively low, making it unable to withstand significant external forces and posing safety hazards. Existing capacitor connection units often lack meticulous structural design, resulting in problems such as inaccurate positioning, poor limiting effect, and difficulty in disassembly. These issues not only increase maintenance costs but also reduce the overall reliability of the power equipment.

[0004] In power capacitor compensation devices, the capacitor connection unit is a key component connecting the capacitor to other parts of the device, and its performance and reliability directly affect the overall operation of the device. Therefore, there is an urgent need for a new type of capacitor connection unit to solve the problems of unreliable connection, inconvenient installation and disassembly, and low structural strength in existing technologies. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned problems, this invention proposes a connection unit, a capacitor, and a power capacitor compensation device, aiming to solve issues such as insufficient connection strength and difficulty in disassembly in the prior art.

[0007] (II) Technical Solution

[0008] A connection unit according to the present invention, the connection unit comprising:

[0009] It includes a first connector and a second connector. The first connector has an upwardly opening connecting groove, and the second connector has a limiting arm that interacts with the connecting groove to increase the connection strength between the first connector and the second connector.

[0010] The connecting groove is provided with an integrally formed limiting post, which is perpendicular to the side wall of the first connecting member.

[0011] In this invention, the connecting groove is further provided with a tripping assembly, which includes an ejector, a knob, and a first rotating shaft. One end of the first rotating shaft extends outward through the inner sidewall of the connecting groove and is connected to the knob, while the other end is disposed inside the sidewall of the connecting groove. The connecting groove is also provided with a drive wheel, which is sleeved on the first rotating shaft and can be rotated by rotating the knob.

[0012] The ejector includes an ejector, a driven wheel, and a second rotating shaft for connecting the ejector and the driven wheel. The second rotating shaft is parallel to the first rotating shaft. The driven wheel is fixedly mounted on the ejector and meshes with the driving wheel. When the knob is rotated, it can drive the driven wheel to rotate, thereby driving the ejector to rotate and lift the limiting arm to release the limiting position.

[0013] The number of ejector components corresponds to the number of limiting arms.

[0014] In this invention, the limiting arm is further provided with at least three protrusions to form a limiting area for engaging with the limiting post. The second connector is provided with at least two limiting arms at one end, and the protrusions on the two limiting arms are arranged opposite to each other to apply a lateral clamping force to the limiting post.

[0015] In this invention, the protrusion is semi-circular or wedge-shaped.

[0016] In this invention, the limiting post is located between the first rotating shaft and the opening, and the number of ejector parts is two, which are respectively arranged on both sides of the first connecting part;

[0017] The ejector includes a connector and a top plate, with the top plate circumferentially disposed at the edge of the connector.

[0018] In this invention, the ejector is fixedly disposed on both sides of the driven wheel, and the two ejector are symmetrically disposed with respect to each other.

[0019] In this invention, the ejector is fixedly disposed on one side of the driven wheel, and the two ejector components are arranged in a mirror image of each other.

[0020] Another capacitor of the present invention includes a connection unit as described in the above technical solution and a capacitor body. The first connector is fixedly disposed on the top of the capacitor body. The capacitor has a core assembly inside, the core assembly being composed of at least one inner core. A gap is provided between the core assembly and the capacitor body, and the gap is filled with inert gas for insulation.

[0021] Another power capacitor compensation device of the present invention includes the capacitor described in the above technical solution.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) This invention achieves a stable connection between the capacitor and external equipment through the ingenious cooperation of the first and second connecting parts and the precise positioning of the limiting post and the limiting arm. Even during long-term use, it can effectively prevent the connection from loosening or falling off, ensuring the stable operation of the capacitor.

[0025] (2) The connection unit of the present invention adopts a tripping component design, which can be easily disassembled by rotating the knob without the need for special tools, greatly improving the efficiency of installation and disassembly. At the same time, this design also facilitates the quick replacement and maintenance of capacitors, reducing maintenance costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a capacitor;

[0028] Figure 2 This is a schematic diagram of the exploded structure of the connecting unit;

[0029] Figure 3 This is a three-dimensional structural diagram of the second connector;

[0030] Figure 4 This is a schematic diagram of the connection structure of the ejector component;

[0031] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting groove;

[0032] Figure 6 This is a schematic diagram of the limiting structure for the second connector;

[0033] Figure 7 This is a schematic diagram of the disassembly structure of the second connector.

[0034] 10. Capacitor body; 20. First connector; 21. Connecting groove; 22. Limiting post; 23. Ejector; 231. Top plate; 232. Connector; 24. First rotating shaft; 25. Knob; 26. Conductive post; 27. Second rotating shaft; 30. Second connector; 31. Limiting arm; 32. Protrusion; 33. Limiting area; 34. Slot; 40. Driving wheel; 41. Driven wheel. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figures 1-7 The present invention discloses a connection unit, a capacitor, and a power capacitor compensation device, namely, a capacitor comprising a capacitor body 10 and a connection unit fixedly disposed on the capacitor body 10.

[0038] Specifically, the connection unit is disposed on the top of the capacitor body 10. The capacitor contains a core assembly consisting of at least one inner core. A gap is provided between the core assembly and the capacitor body 10, and the gap is filled with inert gas for insulation. The connection unit of this invention allows for convenient connection and disconnection of the capacitor from external devices.

[0039] The connection unit includes a first connector 20 and a second connector 30. The first connector 20 is fixedly mounted on the top of the capacitor, while the second connector 30 is connected to another component, such as a reactor, circuit breaker, contactor, control device, current transformer, or voltage transformer. The first connector 20 has an upward-opening connection slot 21, which facilitates the insertion and connection of the second connector 30. The second connector 30 is provided with limiting arms 31 that interact with the connection slot 21. After being inserted into the connection slot 21, these limiting arms 31 effectively increase the connection strength between the first connector 20 and the second connector 30, preventing loosening or detachment due to external forces.

[0040] Within the connecting groove 21, we innovatively incorporated an integrally molded limiting post 22. This limiting post 22 is perpendicular to the side wall of the first connecting member 20, which not only enhances the structural strength of the connecting groove 21 but also provides a precise positioning point for the limiting arm 31 on the second connecting member 30. When the limiting arm 31 is inserted into the connecting groove 21 and rotated to a certain position, the limiting post 22 will engage with the limiting area 33 on the limiting arm 31, forming a stable connection.

[0041] To further enhance the reliability of the connection and facilitate disassembly, a tripping assembly was designed within the connecting groove 21. The tripping assembly includes an ejector 23, a knob 25, and a first rotating shaft 24. One end of the first rotating shaft 24 extends outward through the inner wall of the connecting groove 21 and connects to the knob 25; the other end is located within the side wall of the connecting groove 21 and is fitted with a drive wheel 40. By rotating the knob 25, the drive wheel 40 can be driven to rotate, thereby causing the driven wheel 41, which meshes with the drive wheel 40, to rotate. The driven wheel 41 is fixedly mounted on the ejector 23; therefore, when the driven wheel 41 rotates, the ejector 23 also rotates accordingly and lifts the limiting arm 31, releasing its limiting function, thus enabling easy disassembly of the connecting unit.

[0042] In order to enable the driven wheel 41 and the ejector 23 to rotate and provide corresponding support force, a rotatable second shaft 27 is also installed in the connecting groove 21. That is, the second shaft 27 passes through the outer wall of the connecting groove 21 and is set between the ejector 23 and the driven wheel 41, and the ejector 23 and the driven wheel 41 can rotate on the second shaft 27.

[0043] Specifically, to achieve the above structure, the driving wheel 40 and the driven wheel 41 are positioned at the same horizontal level, that is, the driving wheel 40, the driven wheel 41, and the ejector 23 are staggered, thereby making reasonable use of the space within the connecting groove 21. The diameter of the driven wheel 41 is smaller than the width of the top plate 231, that is, when the top plate rotates at a certain angle, the top plate can lift the limiting arm 31 through its portion higher than the driven wheel 41.

[0044] Specifically, at least three protrusions 32 are designed on the limiting arm 31 to form a limiting area 33. In this embodiment, there are four protrusions 32. These protrusions 32 cooperate with the limiting post 22 to provide a more stable locking effect. At the same time, at least two limiting arms 31 are provided at one end of the second connector 30, and the protrusions 32 on the two limiting arms 31 are arranged opposite each other. This can apply a lateral clamping force to the limiting post 22, further enhancing the stability of the connection.

[0045] In this embodiment, the protrusion 32 can be either semi-circular or wedge-shaped, both of which can effectively engage with the limiting post 22 to form a secure locking relationship. The limiting post 22 is positioned between the first rotating shaft 24 and the opening to ensure that the ejector 23 can accurately push up the limiting arm 31 when the knob 25 is rotated. Specifically, the limiting post 22 is located above the drive wheel 40 to prevent interference between it and the ejector 23.

[0046] The number of ejector pieces 23 corresponds to the number of limiting arms 31 to ensure that each limiting arm 31 can be effectively ejected. In specific implementations, there are usually two ejector pieces 23, respectively located on the left and right sides of the first connector 20. The ejector piece 23 includes a connecting body 232 and a top plate 231. The top plate 231 is circumferentially located at the edge of the connecting body 232. This design allows the ejector piece 23 to more evenly eject the limiting arm 31 during rotation.

[0047] Furthermore, the ejector 23 can be fixedly mounted on both sides of the driven wheel 41, so that the two ejector 23 are symmetrically arranged; or it can be fixedly mounted on one side of the driven wheel 41, so that the two ejector 23 are mirror images of each other. Both of these arrangements ensure that the ejector 23 can accurately lift the limiting arm 31 when rotating, enabling easy disassembly of the connecting unit.

[0048] Similarly, applying the connection unit of the present invention to a power capacitor compensation device can significantly improve the connection reliability and maintenance convenience of the device. The power capacitor compensation device includes the capacitor described in the above technical solution. Through the connection unit of the present invention, the capacitor can be easily connected and disconnected from other parts of the device, thereby facilitating the maintenance and upgrading of the device.

[0049] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A connection unit characterized by comprising: The connecting unit comprises: The connecting unit comprises: The connecting slot is provided with an integrally-formed limiting column, and the limiting column is arranged perpendicularly to the side wall of the first connecting piece.

2. The connection unit according to claim 1, characterized in that The connecting slot is further provided with an unlocking assembly, which comprises an ejector, a knob and a first rotating shaft. One end of the first rotating shaft extends outward through the inner side wall of the connecting slot and is connected with the knob, and the other end is arranged in the side wall of the connecting slot. The connecting slot is further provided with a driving wheel, which is sleeved on the first rotating shaft and can be rotated by rotating the knob. The ejector comprises a top sheet, a driven wheel and a second rotating shaft for connecting the ejector and the driven wheel. The second rotating shaft is arranged parallel to the first rotating shaft. The driven wheel is fixedly arranged on the ejector. The driven wheel is engaged with the driving wheel. When the knob is rotated, the driven wheel can be rotated to drive the ejector to rotate and lift the limiting arm to release the limiting. The number of the ejectors corresponds to the number of the limiting arms.

3. The connection unit according to claim 2, characterized in that The limiting arm is further provided with at least three protrusions to form a limiting area for clamping the limiting column. The second connecting piece is provided with at least two limiting arms at one end, and the protrusions on the two limiting arms are arranged opposite to each other to apply a transverse clamping force to the limiting column.

4. The connection unit according to claim 3, characterized in that The protrusions are semicircular or wedge-shaped.

5. The connection unit according to claim 4, characterized in that The limiting column is located between the first rotating shaft and the opening. The number of the ejectors is two and they are arranged on both sides of the first connecting piece. The ejector comprises a connecting body and a top sheet, and the top sheet is circumferentially arranged at the edge of the connecting body.

6. The connection unit according to claim 5, characterized in that The ejector is fixedly arranged on both sides of the driven wheel, and the two ejectors are arranged symmetrically.

7. The connection unit according to claim 5, characterized in that The ejector is fixedly arranged on one side of the driven wheel, and the two ejectors are arranged mirror-symmetrically.

8. A capacitor characterized by The capacitor comprises the connecting unit of any one of claims 1-7 and a capacitor body. The first connecting piece is fixedly arranged at the top of the capacitor body. The capacitor is provided with a core group, which is composed of at least one inner core. A gap is provided between the core group and the capacitor body, and the gap is filled with inert gas for insulation.

9. A power capacitance compensation device, characterized by, The power capacitor compensation device comprises the capacitor of claim 8.

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