Connecting unit, capacitor and power capacitance compensation device

Abstract

The invention 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] The present invention relates to the technical field, and in particular to a connection unit, a capacitor and a power capacitance compensation device. Background Art

[0002] In the power system, capacitors, as important reactive power compensation components, play an irreplaceable role in improving the power factor of the power network, reducing line losses and improving voltage quality. Traditional capacitor connection methods mostly use bolt fastening, welding or simple plug-in structures, which have many shortcomings in practical applications. Although bolt fastening and welding methods have high connection strength, the installation and disassembly process is cumbersome, requiring special tools and a long operation time, which is not conducive to the rapid maintenance and replacement of power equipment. Especially in emergency fault handling or equipment upgrades, the inefficiency of this connection method is particularly prominent.

[0003] Although the simple plug-in structure improves the convenience of installation and disassembly to a certain extent, it is easy to cause the connection to loosen during long-term use due to factors such as vibration and temperature changes, which in turn affects the stable operation of the capacitor. In addition, the connection strength of the plug-in structure is relatively low, and it is difficult to withstand large external forces, posing a safety hazard. The existing capacitor connection unit often lacks refined considerations in structural design, and problems such as inaccurate positioning, poor limiting effect, and difficulty in disassembly often occur. These problems not only increase maintenance costs, but also reduce the overall reliability of power equipment.

[0004] In the power capacitor compensation device, the capacitor connection unit is a key component that connects the capacitor with other parts of the device. Its performance and reliability are directly related to the operation effect of the entire device. Therefore, a new type of capacitor connection unit is urgently needed to solve the problems of unreliable connection, inconvenient installation and disassembly, and low structural strength in the prior art. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In order to solve the above problems, the present invention proposes a connection unit, a capacitor and a power capacitor compensation device, aiming to solve the problems of insufficient connection strength and difficult disassembly in the prior art.

[0007] (II) Technical solution

[0008] A connection unit of the present invention comprises:

[0009] The invention comprises a first connecting member and a second connecting member, wherein the first connecting member is provided with a connecting groove which opens upward, and the second connecting member is provided with a limiting arm which interacts with the connecting groove and is used to increase the connection strength between the first connecting member and the second connecting member;

[0010] An integrally formed limiting column is provided in the connecting groove, and the limiting column and the side wall of the first connecting member are arranged perpendicular to each other;

[0011] A release assembly is also provided in the connection groove, and the release assembly includes a ejector, a knob, and a first rotating shaft, one end of the first rotating shaft extends outward through the inner side wall of the connection groove and is connected to the knob, and the other end is arranged in the side wall of the connection groove, and a driving wheel is also provided in the connection groove, the driving wheel is sleeved on the first rotating shaft and the driving wheel can be rotated by rotating the knob;

[0012] The ejector member includes an ejector member, a driven wheel, and a second rotating shaft for connecting the ejector member and the driven wheel, the second rotating shaft and the first rotating shaft are arranged parallel to each other, the driven wheel is fixedly arranged on the ejector member, the driven wheel is meshed with the driving wheel, and when the knob is rotated, the driven wheel can be driven to rotate, thereby driving the ejector member to rotate and lift the limiting arm to release the limit;

[0013] The number of the ejection members corresponds to the number of the limiting arms.

[0014] In the present invention, at least three protrusions are provided on the limiting arm to form a limiting area for cooperating with the limiting column for clamping. At least two limiting arms are provided at one end of the second connecting member, and the protrusions on the two limiting arms are arranged opposite to each other to apply a lateral clamping force to the limiting column.

[0015] In the present invention, the shape of the protrusion is semicircular or wedge-shaped.

[0016] In the present invention, the limiting column is located between the first rotating shaft and the opening, and the number of the ejecting members is two and they are respectively arranged on both sides of the first connecting member;

[0017] The ejector comprises a connecting body and a top sheet, and the top sheet is circumferentially arranged at the edge of the connecting body.

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

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

[0020] Another capacitor of the present invention comprises the connection unit described in the above technical solution and a capacitor body, wherein the first connection member is fixedly arranged on the top of the capacitor body, a core group is arranged in the capacitor, the core group is composed of at least one inner core, a gap is arranged between the core group and the capacitor body, and the gap is filled with an inert gas for insulation.

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

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention realizes a stable connection between the capacitor and the external device through the ingenious cooperation of the first connecting member and the second connecting member, and the precise positioning of the limiting column 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 trip assembly design, which can be easily disassembled by rotating the knob without using special tools, greatly improving the efficiency of installation and disassembly. At the same time, this design also facilitates the rapid replacement and maintenance of capacitors, reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0028] Figure 2 It is a schematic diagram of the exploded structure of the connection unit;

[0029] Figure 3 is a schematic diagram of the three-dimensional structure of the second connecting member;

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

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

[0032] Figure 6 is a schematic diagram of a limiting structure of a second connecting member;

[0033] Figure 7 It is a schematic diagram of the disassembly structure of the second connecting member.

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

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figure 1-Figure 7 The present invention discloses a connection unit, a capacitor and a power capacitance compensation device, that is, discloses a capacitor. The capacitor includes a capacitor body 10 and a connection unit fixedly arranged on the capacitor body 10.

[0038] Specifically, the connection unit is arranged on the top of the capacitor body 10, a core group consisting of at least one inner core is arranged in the capacitor, a gap is arranged between the core group and the capacitor body 10, and an inert gas is filled in the gap for insulation. Through the connection unit of the present invention, the connection and removal of the capacitor with the external device can be conveniently realized.

[0039] The connection unit includes a first connection member 20 and a second connection member 30. The first connection member 20 is fixedly arranged on the top of the capacitor, and the second connection member 30 is connected to another component, such as a reactor, a circuit breaker, a contactor, a control device, a current transformer, a voltage transformer, etc. The first connection member 20 is designed with a connection groove 21 that opens upward, which facilitates the insertion and connection of the second connection member 30. The second connection member 30 is provided with a limit arm 31 that interacts with the connection groove 21. After being inserted into the connection groove 21, these limit arms 31 can effectively increase the connection strength between the first connection member 20 and the second connection member 30, and prevent the connection from loosening or falling off due to external force.

[0040] In the connection groove 21, we innovatively set an integrally formed limiting column 22. This limiting column 22 is perpendicular to the side wall of the first connection member 20, which not only enhances the structural strength of the connection groove 21, but also provides a precise positioning point for the limiting arm 31 on the second connection member 30. When the limiting arm 31 is inserted into the connection groove 21 and rotated to a certain position, the limiting column 22 will be stuck in the limiting area 33 on the limiting arm 31 to form a stable connection.

[0041] In order to further enhance the reliability of the connection and facilitate disassembly, we also designed a release assembly in the connection groove 21. The release assembly includes a 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 connection groove 21 and is connected to the knob 25; the other end is arranged in the side wall of the connection groove 21 and is sleeved with a driving wheel 40. By rotating the knob 25, the driving wheel 40 can be driven to rotate, thereby driving the driven wheel 41 engaged with the driving wheel 40 to rotate. The driven wheel 41 is fixedly set on the ejector 23, so when the driven wheel 41 rotates, the ejector 23 will also rotate and lift the limit arm 31, releasing its limit effect, thereby realizing easy disassembly of the connection unit.

[0042] In order to realize the rotation of the driven wheel 41 and the ejector 23 and provide corresponding supporting force, a rotatable second shaft 27 is also clamped in the connecting groove 21. That is, the second shaft 27 passes through the outer wall of the connecting groove 21 to eject the driven wheel 41, and the ejector 23 and the driven wheel 41 can rotate on the second shaft 27.

[0043] Specifically, in order to realize the above structure, the driving wheel 40 and the driven wheel 41 are at the same horizontal position, that is, the driving wheel 40, the driven wheel 41 and the ejector 23 are arranged alternately, so as to reasonably utilize the space in the connecting groove 21. The diameter of the driven wheel 41 is smaller than the width of the top sheet 231, that is, when the top sheet rotates a certain angle, the top sheet can lift the limit arm 31 through its portion higher than the driven wheel 41.

[0044] In particular, we also design at least three protrusions 32 on the limiting arm 31 to form a limiting area 33. In this embodiment, the number of protrusions 32 is four, and these protrusions 32 cooperate with the limiting column 22 to provide a more stable clamping effect. At the same time, at least two limiting arms 31 are provided at one end of the second connecting member 30, and the protrusions 32 on the two limiting arms 31 are arranged oppositely, so that a lateral clamping force can be applied to the limiting column 22, further enhancing the stability of the connection.

[0045] In the embodiment, the shape of the protrusion 32 can be selected to be semicircular or wedge-shaped, both of which can effectively cooperate with the limiting column 22 to form a stable clamping relationship. The position of the limiting column 22 is designed between the first rotating shaft 24 and the opening to ensure that the ejector 23 can accurately lift the limiting arm 31 when the knob 25 is rotated. Specifically, the limiting column 22 is located above the driving wheel 40 to prevent interference between it and the ejector 23.

[0046] The number of ejectors 23 corresponds to the number of limit arms 31 to ensure that each limit arm 31 can be effectively lifted up. In a specific implementation, there are usually two ejectors 23, which are respectively arranged on the left and right sides of the first connector 20. The ejector 23 includes a connector 232 and a top sheet 231, and the top sheet 231 is circumferentially arranged at the edge of the connector 232. This design enables the ejector 23 to lift the limit arm 31 more evenly when rotating.

[0047] In addition, the ejector 23 can be fixedly arranged on both sides of the driven wheel 41, so that the two ejector 23 are arranged symmetrically with each other; or it can be fixedly arranged on one side of the driven wheel 41, so that the two ejector 23 are arranged in a mirror image with each other. Both of these arrangements can ensure that the ejector 23 can accurately lift the limit arm 31 when rotating, so as to realize easy disassembly of the connection unit.

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

[0049] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A connection unit, characterized in that: The connecting unit comprises: The invention comprises a first connecting member and a second connecting member, wherein the first connecting member is provided with a connecting groove which opens upwards, and the second connecting member is provided with a limiting arm which interacts with the connecting groove and is used to increase the connection strength between the first connecting member and the second connecting member; An integrally formed limiting column is provided in the connecting groove, and the limiting column and the side wall of the first connecting member are arranged perpendicular to each other; A release assembly is also provided in the connection groove, and the release assembly includes a ejector, a knob, and a first rotating shaft, one end of the first rotating shaft extends outward through the inner side wall of the connection groove and is connected to the knob, and the other end is arranged in the side wall of the connection groove, and a driving wheel is also provided in the connection groove, the driving wheel is sleeved on the first rotating shaft and the driving wheel can be rotated by rotating the knob; The ejector member includes an ejector member, a driven wheel, and a second rotating shaft for connecting the ejector member and the driven wheel, the second rotating shaft and the first rotating shaft are arranged parallel to each other, the driven wheel is fixedly arranged on the ejector member, the driven wheel is meshed with the driving wheel, and when the knob is rotated, the driven wheel can be driven to rotate, thereby driving the ejector member to rotate and lift the limiting arm to release the limit; The number of the ejection members corresponds to the number of the limiting arms.

2. The connection unit according to claim 1, characterized in that: The limiting arm is also provided with at least three protrusions to form a limiting area for cooperating with the limiting column for clamping. At least two limiting arms are provided at one end of the second connecting member, and the protrusions on the two limiting arms are arranged opposite to each other to apply a lateral clamping force to the limiting column.

3. The connection unit according to claim 2, characterized in that: The shape of the protrusion is semicircular or wedge-shaped.

4. The connection unit according to claim 1 or 3, characterized in that: The limiting column is located between the first rotating shaft and the opening, and the number of the ejecting members is two and they are respectively arranged on both sides of the first connecting member; The ejector comprises a connecting body and a top sheet, and the top sheet is circumferentially arranged at the edge of the connecting body.

5. The connection unit according to claim 4, characterized in that: The ejector members are fixedly arranged on both sides of the driven wheel, and the two ejector members are symmetrically arranged with respect to each other.

6. The connection unit according to claim 4, characterized in that: The ejector is fixedly arranged at one side of the driven wheel, and the two ejector are arranged in mirror image with each other.

7. A capacitor, characterized in that: The capacitor comprises the connecting unit according to any one of claims 1 to 6 and a capacitor body, the first connecting member is fixedly arranged on the top of the capacitor body, a core group is provided in the capacitor, the core group 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 an inert gas for insulation.

8. A power capacitor compensation device, characterized in that: The power capacitance compensation device comprises the capacitor as claimed in claim 7.

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