10kV all-insulation switch cabinet suite device

Abstract

The invention relates to the technical field of high-voltage switch cabinets, and discloses a 10kV all-insulation switch cabinet suite device which comprises a pair of all-insulation sleeves used for being installed on the tops of two adjacent high-voltage switch cabinets respectively, each all-insulation sleeve is composed of a sleeve body, a copper bar connecting piece and an insulation outer sleeve, and the copper bar connecting pieces are packaged in the insulation outer sleeves; the bottom of the all-insulation sleeve is provided with a first connecting end which is electrically connected with a normal-pressure closed switch in a switch cabinet, and the top of the sleeve is provided with a second connecting end which is in butt joint with another sleeve copper bar; and the second connecting end is fixedly connected through an insulating screw and is sleeved with an insulating sleeve cover. The copper bar connecting piece is completely wrapped by the insulating jacket, so that the influence of external environment on electrical connection is effectively avoided, and the risk of short circuit or electric leakage is reduced; the insulation screw fixation and the insulation sleeve cover of the second connection end can ensure the connection stability between the adjacent switch cabinets and strengthen the connection insulation protection; the modularized sleeve structure can quickly realize top butt joint of adjacent high-voltage switch cabinets, thereby facilitating later maintenance and replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switchgear, and in particular to a 10kV fully insulated switchgear kit device. Background Art

[0002] The bushing structure currently used in 10kV high-voltage incoming line switchgear is mostly a semi-insulated through-the-wall design, with electrical connections made by side-by-side paneling. This structure presents the following issues: 1. Maintenance requires simultaneous disassembly of adjacent panels, preventing independent operation of a single panel and resulting in low maintenance efficiency; 2. The exterior of the bushing is inaccessible, posing a risk of electric shock to maintenance personnel; 3. Some existing "fully insulated" panels are limited to enclosed structures and lack fully insulated modularity, presenting a safety hazard. Therefore, improvements to existing technology are needed.

[0003] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Summary of the Invention

[0004] The present invention provides a 10kV fully insulated switch cabinet kit device to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A 10kV fully insulated switchgear kit device, comprising:

[0007] A pair of fully insulating bushings for installation on the tops of two adjacent high-voltage switchgear cabinets, each of which is composed of a bushing body, a copper busbar connector, and an insulating jacket, wherein the copper busbar connector is encapsulated in the insulating jacket;

[0008] The bottom of the fully insulating bushing is provided with a first connection end electrically connected to the normal pressure sealed switch in the switch cabinet, and the top of the bushing is provided with a second connection end connected to the copper busbar of another bushing;

[0009] The second connection end is fixedly connected by an insulating screw and is sleeved with an insulating cover.

[0010] Optionally, the fully insulating sleeve is a detachable structure.

[0011] Optionally, the insulating jacket is made of a high-voltage resistant insulating material, with a power frequency withstand voltage value ≥65kV and a lightning impulse voltage value ≥125kV.

[0012] Optionally, the copper busbar connector includes an L-shaped top connection portion, or a bent top connection portion at a preset angle, one end of which is fixedly connected to the copper busbar body, and the other end forms a connection end for connecting to the cabinet top.

[0013] Optionally, the insulating cover is installed by snap-fitting or threaded fitting.

[0014] Optionally, the bushing body is molded from a composite insulating material, and the surface of the bushing body has an insulation performance with a creepage distance greater than or equal to 3.1 cm / kV.

[0015] Optionally, the rated current of the device is ≥1.1Ir.

[0016] Optionally, the copper busbar connectors are arranged at equal heights and equal intervals.

[0017] Optionally, the device includes an adjustable insulating connection assembly, and both ends of the adjustable insulating connection assembly are respectively provided with a first connection part adapted to the interface of the fully insulating cabinet, and a second connection part adapted to the interface of the semi-insulating cabinet.

[0018] Optionally, the length of the insulating connection assembly can be adjusted by a telescopic structure or a modular splicing method to form a flexible connection between the fully insulating cabinet and the semi-insulating cabinet.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The fully insulated casing adopts an integrated packaging structure, and the copper busbar connector is completely wrapped by the insulating jacket, which can significantly improve the overall insulation performance of the device, effectively prevent the influence of the external environment (such as dust and moisture) on the electrical connection, and reduce the risk of short circuit or leakage;

[0021] The insulating screw fixation and insulating cover encapsulation design of the second connection end at the top can not only ensure the stability of the connection between adjacent switch cabinets, but also further strengthen the insulation protection of the connection parts, meeting the safe operation requirements in high-voltage environments;

[0022] The modular bushing structure design makes the device easy to install and can quickly achieve top docking of adjacent high-voltage switchgear, improving the assembly efficiency of the 10kV switchgear system and facilitating subsequent maintenance and replacement.

[0023] The present invention has other features and advantages that will be apparent from or will be described in detail in the accompanying drawings and the following detailed description incorporated herein, which together serve to explain certain principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0025] Figure 1 The figure is a schematic structural diagram of a 10kV fully insulated switchgear kit device provided by an embodiment of the present invention.

[0026] Figure numerals: 10, fully insulating bushing; 11, insulating cover; 12, copper busbar connector; 13, insulating jacket; 14, first connecting end; 15, second connecting end; 20, high-voltage switchgear. DETAILED DESCRIPTION

[0027] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0028] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0030] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0031] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0032] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0033] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0034] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0035] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] Please refer to Figure 1 The embodiment of the present invention provides a 10kV fully insulated switchgear kit device, comprising:

[0037] A pair of fully insulating bushings 10 for installation on the tops of two adjacent high-voltage switchgear cabinets 20, each comprising a bushing body, a copper busbar connector 12, and an insulating jacket 13. The copper busbar connector 12 is encapsulated in the insulating jacket 13.

[0038] The bottom of the fully insulating bushing 10 is provided with a first connection end 14 electrically connected to the normal pressure sealed switch in the switch cabinet, and the top of the bushing is provided with a second connection end 15 connected to another bushing copper busbar;

[0039] The second connection end 15 is fixedly connected by an insulating screw and is covered with an insulating cover 11 .

[0040] Traditional 10kV switchgear is mostly semi-insulated, requiring parallel connections and making individual maintenance impossible. By implementing a standalone, fully insulated bushing 10 structure with copper busbars as top connections, combined with an insulated enclosure, this design allows for safe, accessible, modular, and independent replacement during operation.

[0041] This embodiment sets up independent fully insulating bushings 10 between the two cabinets. The top ends of the bushings are connected through copper busbar connectors 12 to form an electrical path. The outside is sealed with insulating screws and insulating sleeve covers 11 to achieve fully insulated operation, which can improve operation and maintenance safety and prevent electric shock. It supports independent disassembly and maintenance of the cabinets, improves structural versatility and installation efficiency, and reduces system failure maintenance costs.

[0042] In some possible implementations, the fully insulated bushing 10 is removable. Because traditional connection structures require the complete disassembly and assembly of multiple cabinets, complicating maintenance, switching to a standalone installation significantly improves operational efficiency. This embodiment structurally disconnects the bushing from the switch cabinet to create a pluggable structure. Replacement can be completed by simply loosening the top copper busbar connection and fixings. This allows for single-cabinet replacement without affecting the normal operation of other switch cabinets, saving maintenance time and maintenance manpower.

[0043] In some possible implementations, the insulating jacket 13 is made of a high-voltage resistant insulating material, with a power frequency withstand voltage value of ≥65 kV and a lightning impulse voltage value of ≥125 kV.

[0044] In some possible embodiments, the copper busbar connector 12 includes an L-shaped top connection portion, or a bent top connection portion at a preset angle, one end of the top connection portion is fixedly connected to the copper busbar body, and the other end forms a connection end for connecting to the top of the cabinet.

[0045] The 10kV system voltage places high demands on the insulation components' lightning impulse and power frequency withstand voltage. To ensure long-term safe operation, bushing insulation reinforcement is essential. By selecting composite insulation materials with superior withstand voltage performance, combined with optimized creepage distance and material thickness design, sufficient dielectric strength is ensured even at high voltages, enhancing the electrical safety of the entire system.

[0046] In some possible implementations, the insulating cover 11 is installed by snap-fitting or threaded fitting to adapt to the non-coplanar structure of the cabinet arrangement, facilitate installation and adjustment, and improve the stability and aesthetics of the system connection.

[0047] In some possible implementations, the bushing body is molded from a composite insulating material, and the surface of the bushing body has an insulation performance with a creepage distance greater than or equal to 3.1 cm / kV, which effectively eliminates contact risks and dust influences, improves safety and protection levels, enhances the electrical stability and life of the product in complex environments, and improves the overall reliability of the system.

[0048] In some possible implementations, the rated current of the device is ≥1.1Ir to increase the upper operating limit of the equipment and ensure arc suppression capability and fire protection compliance under fault conditions.

[0049] In some possible implementations, the copper busbar connectors 12 are arranged at equal heights and spacings to improve component consistency, facilitate mass production and standardized installation, and reduce potential electric field distortion risks.

[0050] In some possible embodiments, the device includes an adjustable insulating connection assembly, wherein both ends of the adjustable insulating connection assembly are respectively provided with a first connection portion adapted to the interface of a fully insulating cabinet, and a second connection portion adapted to the interface of a semi-insulating cabinet.

[0051] Furthermore, the length of the insulating connection assembly can be adjusted through a telescopic structure or modular splicing method to form a flexible connection between the fully insulated cabinet and the semi-insulated cabinet, so as to expand the product application scenarios, solve the connection problems between different types of switch cabinets, and improve the flexibility of system layout.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] The fully insulated sleeve 10 adopts an integrated packaging structure, and the copper busbar connector 12 is completely wrapped by the insulating jacket 13, which can significantly improve the overall insulation performance of the device, effectively prevent the influence of the external environment (such as dust and moisture) on the electrical connection, and reduce the risk of short circuit or leakage;

[0054] The insulating screw fixation of the second top connection end 15 and the encapsulation design of the insulating cover 11 can not only ensure the stability of the connection between adjacent switch cabinets, but also further strengthen the insulation protection of the connection parts to meet the safe operation requirements in high-voltage environments;

[0055] The modular bushing structure design makes the device easy to install and can quickly achieve the top docking of adjacent high-voltage switchgear 20, improving the assembly efficiency of the 10kV switchgear system and facilitating subsequent maintenance and replacement.

[0056] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of protection of this application.

Claims

1. A 10kV fully insulated switchgear kit device, characterized in that: include: A pair of fully insulating bushings for installation on the tops of two adjacent high-voltage switchgear cabinets, each of which is composed of a bushing body, a copper busbar connector, and an insulating jacket, wherein the copper busbar connector is encapsulated in the insulating jacket; The bottom of the fully insulating bushing is provided with a first connection end electrically connected to the normal pressure sealed switch in the switch cabinet, and the top of the bushing is provided with a second connection end connected to the copper busbar of another bushing; The second connection end is fixedly connected by an insulating screw and is sleeved with an insulating cover.

2. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The fully insulating sleeve is a detachable structure.

3. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The insulating jacket is made of high-voltage resistant insulating material, with a power frequency withstand voltage value of ≥65kV and a lightning impulse withstand voltage value of ≥125kV.

4. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The copper busbar connector includes an L-shaped top connection portion, or a bent top connection portion at a preset angle, one end of which is fixedly connected to the copper busbar body, and the other end forms a connection end for connecting to the cabinet top.

5. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The insulating sleeve cover is installed by means of snap-fit ​​or threaded fitting.

6. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The bushing body is molded from a composite insulating material, and the surface of the bushing body has an insulation performance with a creepage distance greater than or equal to 3.1 cm / kV.

7. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The rated current of the device is ≥1.1Ir.

8. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The copper busbar connectors are arranged at equal heights and at equal intervals.

9. The 10kV fully insulated switchgear kit device according to claim 1, characterized in that: The device comprises an adjustable insulating connection assembly, wherein two ends of the adjustable insulating connection assembly are respectively provided with a first connection part adapted to the interface of a full insulating cabinet and a second connection part adapted to the interface of a semi-insulating cabinet.

10. The 10kV fully insulated switchgear kit device according to claim 9, characterized in that: The length of the insulating connection assembly can be adjusted through a telescopic structure or a modular splicing method to form a flexible connection between the fully insulating cabinet and the semi-insulating cabinet.

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