Equipotential bonding structure for high and low voltage switchgear

Abstract

The utility model relates to high low pressure switchgear field, concretely relates to a kind of equal-potential connection structure for high low pressure switchgear, including static contact, equal-potential connecting sheet and static arc contact, and the equal-potential connecting sheet two ends are connected static contact and static arc contact respectively;The equal-potential connecting sheet is flexible conductive part.Adopt flexible conductive part as equal-potential connecting sheet to connect static arc contact and static contact in high low pressure switchgear, can effectively adapt to the slight displacement and vibration in the process of equipment operation, ensure the reliability and stability of equal-potential connection.

Description

Technical Field

[0001] This utility model relates to the field of high and low voltage switchgear, and specifically to an equipotential bonding structure for high and low voltage switchgear. Background Technology

[0002] In current high and low voltage switchgear, the stationary arc contact 3 and the stationary contact 1 need to be connected by an equipotential bonding plate. Previously, the equipotential bonding plate was formed by bending a copper plate 4. Figure 1 and Figure 2 As shown, the equipotential bonding piece has an L-shaped structure, with one end connected to the stationary arc contact 3 and the other end connected to the stationary contact 1.

[0003] The problems with equipotential bonding plates made of bent copper plates in the past were:

[0004] 1. Poor flexibility: The copper plate is not easy to bend, and precise measurement and positioning are required during installation, resulting in poor adaptability.

[0005] 2. Complex installation: The installation of bent copper plates may require additional tools and skills, and the installation process is relatively complex.

[0006] 3. Vibration sensitivity: Bending copper plates are relatively sensitive to vibration, and are prone to loosening of connections or fatigue fracture in vibrating environments.

[0007] 4. Higher cost: Bending copper plates requires higher dimensional accuracy, which increases the cost compared to soft copper wire. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an equipotential connection structure for high and low voltage switchgear, thereby solving the technical problems of poor adaptability of the installation structure and complicated installation process caused by the previous use of bent copper plates as equipotential connection pieces.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] An equipotential bonding structure for high and low voltage switchgear is provided, including:

[0011] The device includes a stationary contact, an equipotential bonding plate, and a stationary arc contact, wherein the two ends of the equipotential bonding plate are respectively connected to the stationary contact and the stationary arc contact;

[0012] The equipotential bonding sheet is a flexible conductive component.

[0013] Furthermore, the flexible conductive element includes

[0014] The conductive body is made of copper wire braid and has a flat structure. The two ends of the conductive body are formed by resistance brazing to form rigid connection ends. The conductive body between the two rigid connection ends has a flexible structure. Screw holes are opened on the rigid connection ends.

[0015] The rigid connecting end is fixedly connected to the stationary contact or stationary arc contact via connecting screws.

[0016] Furthermore, an L-shaped corner plate is provided on the stationary contact, with the horizontal side of the corner plate connected to the stationary contact and the vertical side of the corner plate connected to the rigid connection end of the flexible conductive component.

[0017] Furthermore, the stationary contact is placed horizontally, and the stationary arc contact is located above the stationary contact and is placed vertically.

[0018] Furthermore, the wide surface of the rigid connecting end on one side of the equipotential bonding piece contacts the corner plate, and the wide surface of the rigid connecting end on the other side contacts the rear end face of the static arc contact.

[0019] The beneficial effects of this utility model are:

[0020] Using flexible conductive components as equipotential bonding pieces to connect the stationary arc contacts and stationary contacts in high and low voltage switchgear can effectively adapt to minute displacements and vibrations during equipment operation, ensuring the reliability and stability of the equipotential connection.

[0021] The two ends of the equipotential bonding piece are fixed by resistance brazing, which achieves good flexibility, excellent conductivity and simple installation process.

[0022] Using flexible conductive components allows for better measurement of timing and static arc contact resistance. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 and Figure 2 This is a schematic diagram of the equipotential bonding structure used in traditional high and low voltage switchgear;

[0025] Figure 3 This is a schematic diagram of the equipotential bonding structure for high and low voltage switchgear of this utility model;

[0026] Figure 4 This is a schematic diagram of a flexible conductive component;

[0027] Among them, 1. stationary contact, 2. angle plate, 3. stationary arc contact, 4. copper plate, 5. flexible conductive component, and 51. rigid connection end. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] This application provides an equipotential bonding structure for high and low voltage switchgear, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0030] To address the technical problems of poor adaptability and complex installation process caused by using bent copper plates as equipotential bonding plates in existing technologies, one embodiment of this application provides an equipotential bonding structure for high and low voltage switchgear. This is described in detail below.

[0031] like Figure 3 and Figure 4 As shown, an equipotential bonding structure for high and low voltage switchgear includes...

[0032] The components include a stationary contact 1, an equipotential bonding plate, and a stationary arc contact 3, with the two ends of the equipotential bonding plate connected to the stationary contact 1 and the stationary arc contact 3, respectively.

[0033] The equipotential bonding piece is a flexible conductive element 5.

[0034] Specifically, as an optional implementation method in this embodiment, such as Figure 4 As shown, the flexible conductive element 5 includes

[0035] The conductive body is made of copper wire braid and has a flat structure. The two ends of the conductive body are formed by resistance brazing to form rigid connection ends 51. The conductive body between the two rigid connection ends 51 has a flexible structure. Screw holes are opened on the rigid connection ends 51.

[0036] The rigid connecting end 51 is fixedly connected to the stationary contact 1 or the stationary arc contact 3 by connecting screws.

[0037] The conductive body made of copper wire is flexible if it is not subjected to resistance brazing. After resistance brazing, the copper wire is solidified and finally forms a rigid connection end 51.

[0038] The flexible conductive element 5 in this embodiment can be bent and deformed in both the wide and narrow directions to adapt to different installation positions of the stationary contact 1 and the stationary arc contact 3 within the switch.

[0039] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, an L-shaped corner plate 2 is provided on the stationary contact 1. The horizontal side of the corner plate 2 is connected to the stationary contact 1, and the vertical side of the corner plate 2 is connected to the rigid connection end 51 of the flexible conductive component 5.

[0040] In this embodiment, the horizontal side of the corner plate 2 is locked to the stationary contact 1 by screws, and the vertical side of the corner plate 2 is also locked to the rigid connection end 51 by screws.

[0041] In this embodiment, the corner plate 2 is made of copper.

[0042] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, the stationary contact 1 is placed horizontally, and the stationary arc contact 3 is located above the stationary contact 1 and is placed vertically.

[0043] In this embodiment, the stationary contact 1 and the stationary arc contact 3 are arranged in a vertical structure inside the switch, which facilitates the fixed installation of the stationary contact 1 and the stationary arc contact 3 inside the switch.

[0044] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, the wide surface of the rigid connection end 51 on one side of the equipotential bonding piece contacts the corner plate 2, and the wide surface of the rigid connection end 51 on the other side contacts the rear end face of the static arc contact 3.

[0045] The improved flexible conductive element 5, connected between the stationary contact 1 and the stationary arc contact 3, allows for switching of the current path of the switch:

[0046] High flexibility: It can adapt to minor displacements and vibrations during equipment operation, ensuring the stability of the connection.

[0047] Excellent electrical conductivity: Copper itself has excellent electrical conductivity, which can meet the high conductivity requirements of equipotential bonding technology.

[0048] Easy to install: Soft copper wire can be deformed at will, making it easy to install and wire, reducing installation difficulty and processing costs.

[0049] More cost-effective: It has lower requirements for processing precision and is highly adaptable to different operating environments.

[0050] The use of the flexible conductive element 5 also facilitates the testing of the function of the static arc contact 3. Specifically, firstly, it makes it easier to test the resistance of the static arc contact 3; secondly, it makes it easier to test the time difference between the separation of the static contact 1 and the static arc contact 3, i.e., to measure the timing sequence. During timing measurement, simply disconnect the flexible conductive element 5 from the rigid connection end 51 of the corner plate 2, and then quickly connect this rigid connection end 51 to an oscilloscope, thus facilitating timing measurement via the oscilloscope.

[0051] If the original copper plate structure is used for connection, it is unreliable and the overlap area is small. However, if flexible conductive parts are used, the overlap area is better and the connection is more reliable. Moreover, flexible connection is a mature technology in the low-voltage electrical industry and there is no risk.

[0052] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0053] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0056] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0057] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0058] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An equipotential bonding structure for high and low voltage switchgear, characterized in that, include: A stationary contact (1), an equipotential bonding plate, and a stationary arc contact (3), wherein the two ends of the equipotential bonding plate are respectively connected to the stationary contact (1) and the stationary arc contact (3); The equipotential bonding piece is a flexible conductive element (5); The flexible conductive element (5) includes The conductive body is made of copper wire braid. The conductive body has a flat structure. The two ends of the conductive body are formed by resistance brazing to form rigid connection ends (51). The conductive body between the two rigid connection ends (51) has a flexible structure. Screw holes are opened on the rigid connection ends (51). The rigid connecting end (51) is fixedly connected to the stationary contact (1) or the stationary arc contact (3) by connecting screws; An L-shaped corner plate (2) is provided on the stationary contact (1). The horizontal side of the corner plate (2) is connected to the stationary contact (1), and the vertical side of the corner plate (2) is connected to the rigid connection end (51) of the flexible conductive component (5).

2. The equipotential bonding structure for high and low voltage switchgear according to claim 1, characterized in that, The stationary contact (1) is placed horizontally, and the stationary arc contact (3) is located above the stationary contact (1) and is placed vertically.

3. The equipotential bonding structure for high and low voltage switchgear according to claim 1, characterized in that, The wide surface of the rigid connecting end (51) on one side of the equipotential bonding piece contacts the corner plate (2), and the wide surface of the rigid connecting end (51) on the other side contacts the rear end face of the static arc contact (3).

4. The equipotential bonding structure for high and low voltage switchgear according to claim 1, characterized in that, The corner plate (2) is made of copper.

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