A plug for a high current busbar of an air- insulated switchgear

Abstract

This utility model discloses a high-current busbar plug for a gas-insulated switchgear. It relates to the technical field of high-current busbar connectors and employs a plug-in head housing, a protective cylinder, and an anti-detachment device. The busbar body is housed inside the plug-in head housing, and a fixing ring is provided at one end of the housing. This utility model utilizes the coordinated use of a movable cavity, spring, clamping plate, guide block, guide rail, and rubber pad. When not connected, the spring force causes the two sets of clamping plates to move closer together until they block the end connector of the busbar, thus preventing impurities from entering the protective cylinder and affecting the use of the end connector of the busbar body. As the clamping plate moves, it causes the guide block to slide on the guide rail, thereby improving the stability of the clamping plate movement and preventing shaking. Simultaneously, by providing a protective cylinder at one end of the fixing ring and placing the end connector of the busbar body inside the protective cylinder, the end connector of the busbar body is prevented from being exposed, thus avoiding leakage problems.

Description

Technical Field

[0001] This utility model relates to the field of high-current busbar connector technology, specifically to a high-current busbar plug for a gas-insulated switchgear. Background Technology

[0002] Indoor AC high-voltage gas-insulated metal-enclosed switchgear (hereinafter referred to as "gas-insulated switchgear") is a new generation of switchgear. The main switch can be either a permanent magnet vacuum circuit breaker or a spring mechanism vacuum circuit breaker. The entire cabinet combines air insulation with sulfur hexafluoride gas compartments, making it both compact and expandable, suitable for power distribution automation. Gas-insulated switchgear features compact structure, flexible operation, and reliable interlocking, providing satisfactory technical solutions for various applications (especially harsh environments) and different user requirements.

[0003] Currently, high-current busbars are commonly used in gas-insulated switchgear. These high-current busbars are equipped with plugs at their ends for connecting external equipment. These plugs are usually directly connected to the interfaces of the external equipment. However, due to the poor protection of existing high-current busbars and exposed joints, electric shock is a risk. Furthermore, after connection, the plugs can easily become loose when the busbar is subjected to external force, leading to poor contact or interruption at the connection point, thus affecting its use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-current busbar plug for gas-insulated switchgear, which solves the problems raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-current busbar plug for a gas-insulated switchgear includes a plug housing, a protective cylinder, and an anti-detachment device. The plug housing contains a busbar body. A fixing ring is located at one end of the plug housing, and a protective cylinder is located at the other end of the fixing ring. The end connector of the busbar body extends into the interior of the protective cylinder. Movable cavities are formed at both the top and bottom of the protective cylinder. A spring is installed within each movable cavity, and a clamping plate is located at the bottom of the spring. Guide blocks are fixedly installed at both ends of the clamping plate. A guide rail is provided on the inner wall of the movable cavity, and the guide blocks and guide rails are slidably connected. Symmetrical anti-detachment devices are provided on the outer surface of the plug housing.

[0006] Preferably, a rubber pad is fixedly installed on the inner wall of the clamping plate, and the rubber pad is made of anti-slip rubber material.

[0007] Preferably, the anti-fall-off device includes a support plate, a fixed plate is hinged inside the support plate, a sliding plate is provided through one end of the fixed plate, the fixed plate and the sliding plate are slidably connected, an arc-shaped clamping sleeve is fixedly installed at the other end of the sliding plate, the number of arc-shaped clamping sleeves is set to two, a positioning block is fixedly installed on the surface of one arc-shaped clamping sleeve, a socket is fixedly installed on the surface of the other arc-shaped clamping sleeve, an insert plate is provided through the positioning block, the positioning block and the insert plate are slidably connected, the other end of the insert plate passes through the socket and is slidably connected to the socket, and a limit screw is threadedly connected to the positioning block.

[0008] Preferably, the outer surface of the insert plate has a plurality of threaded holes that cooperate with the limiting screw, and the plurality of threaded holes are arranged in an array.

[0009] Preferably, a limit spring is provided on the upper outer surface of the limiting screw.

[0010] Compared with the prior art, the beneficial effects achieved by this utility model are: The gas-insulated switchgear high-current busbar plug provided by this utility model uses a combination of a movable cavity, spring, clamping plate, guide block, guide rail and rubber pad. When not connected, the spring force causes the two sets of clamping plates to move closer to each other until they block the end joint of the busbar body, thereby preventing impurities from entering the interior of the protective cylinder and affecting the use of the end joint of the busbar body. When the clamping plate moves, it will drive the guide block to slide on the guide rail, thereby improving the stability of the clamping plate during movement and preventing shaking. At the same time, by setting a protective cylinder at one end of the fixed ring, and by placing the end joint of the busbar body inside the protective cylinder, the end joint of the busbar body is prevented from being exposed and causing leakage. This utility model has a rubber pad fixedly installed on the inner wall of the clamping plate. The rubber pad is made of anti-slip rubber material, which can greatly increase the friction between the joint and the external connection point, thereby greatly enhancing the tightness of the connection between the external connection point and the end joint of the busbar body and preventing it from loosening. This invention features symmetrical anti-detachment devices on the outer surface of the plug-in head housing. By holding the plug-in head housing and connecting the protective sleeve to the external equipment, the connector at the external connection point aligns with the end connector of the busbar body. At this point, the external connection point contacts the fixing ring. Next, the fixing plate is rotated towards the fixing ring, causing the sliding plate and the arc-shaped clamping sleeve to move towards the fixing ring. Once the arc-shaped clamping sleeve firmly holds the fixing ring and the external connection point, the plug-in plate is moved towards the positioning block and inserted into the positioning block. The screw is moved into place until the threaded hole on the surface of the insert plate is in the appropriate position. Then, the two sets of arc-shaped clamping sleeves are fixed and limited by the cooperation of the limiting screw and the threaded hole. This allows the two sets of arc-shaped clamping sleeves to press and fix the fixing ring in the middle and the external connection, thereby achieving the effect of tightening the fixing ring and the external connection and avoiding loosening. At the same time, a limiting spring is set on the upper outer surface of the limiting screw to resist the limiting screw and prevent it from loosening during use, which could lead to connection interruption and other problems that would affect the use. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention.

[0012] Figure 2 This is a side view of the present invention.

[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0014] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A.

[0015] In the diagram: 1. Busbar body; 2. Plug-in head housing; 3. Fixing ring; 4. Protective cylinder; 5. Movable cavity; 6. Spring; 7. Clamping plate; 8. Guide block; 9. Guide rail; 10. Rubber pad; 11. Anti-drop device; 11.1. Support plate; 11.11. Fixing plate; 11.12. Sliding plate; 11.13. Arc-shaped clamping sleeve; 11.14. Positioning block; 11.15. Socket; 11.16. Insert plate; 11.17. Threaded hole; 11.18. Limiting screw; 11.19. Limiting spring. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0017] According to an embodiment of this utility model, a high-current busbar plug for a gas-insulated switchgear is provided.

[0018] Example 1: As shown in the attached diagram of the instruction manual. Figure 1 As shown, a high-current busbar plug for a gas-insulated switchgear includes a plug housing 2, a protective cylinder 4, and an anti-detachment device 11. A busbar body 1 is disposed inside the plug housing 2. A fixing ring 3 is disposed at one end of the plug housing 2, and a protective cylinder 4 is disposed at one end of the fixing ring 3. The end connector of the busbar body 1 extends into the interior of the protective cylinder 4. Movable cavities 5 are formed at both the top and bottom of the interior of the protective cylinder 4. A spring 6 is disposed within the movable cavity 5, and a clamping plate 7 is disposed at the bottom end of the spring 6. Guide blocks 8 are fixedly installed at both ends of the clamping plate 7. A guide rail 9 is disposed on the inner wall of the movable cavity 5, and the guide blocks 8 and the guide rail 9 are slidably connected. Symmetrical anti-detachment devices 11 are disposed on the outer surface of the plug housing 2.

[0019] Example 2: As shown in the attached diagram of the instruction manual. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a high-current busbar plug for a gas-insulated switchgear is used by first holding the plug housing 2 by hand, and then connecting the protective cylinder 4 to the connection point of the external equipment. When the connector of the external connection point passes through the protective cylinder 4, it will squeeze the clamping plate 7, and then the clamping plate will squeeze the spring 6 until the connector of the external connection point can mate with the end connector of the busbar body 1. While the clamping plate 7 moves, it will drive the guide block 8 to slide on the guide rail 9, thereby improving the stability of the clamping plate 7 during movement and preventing shaking. Simultaneously, the external connection will contact the fixing ring 3. Then, the fixing plate 11.11 will rotate towards the fixing ring 3. The fixing plate 11.11 will drive the sliding plate 11.12 and the arc-shaped clamping sleeve 11.13 to move towards the fixing ring 3. After the arc-shaped clamping sleeve 11.13 firmly clamps the fixing ring 3 and the external connection, the insert plate 11.16 will move towards the positioning block 11.14 and be inserted into the positioning block 11.14 until the threaded hole 11.17 on the surface of the insert plate 11.16 moves to the appropriate position. Then, through the cooperation of the limiting screw 11.18 and the threaded hole 11.19, the two sets of arc-shaped clamping sleeves 11.13 will be fixed and limited, so that the two sets of arc-shaped clamping sleeves 11.13 will press and fix the fixing ring 3 and the external connection in the middle, thereby achieving the effect of fastening the fixing ring 3 and the external connection and avoiding the problem of loosening.

[0020] By installing a protective cylinder 4 at one end of the fixed ring 3, and placing the end joint of the busbar body 1 inside the protective cylinder 4, the problem of leakage caused by the external exposure of the end joint of the busbar body 1 is avoided.

[0021] The combination of the movable cavity 5, spring 6, clamping plate 7, guide block 8, guide rail 9 and rubber pad 10 allows the two sets of clamping plates 7 to move closer to each other under the force of spring 6 when not connected, until they block the end joint of the busbar body 1, thereby preventing impurities from entering the interior of the protective cylinder 4 and affecting the use of the end joint of the busbar body 1.

[0022] The clamping plate 7 has a rubber pad 10 fixedly installed on its inner wall. The rubber pad 10 is made of non-slip rubber material, which can greatly increase the friction between the external connection and the joint, thereby greatly enhancing the tightness of the connection between the external connection and the end joint of the busbar body 1 and preventing it from loosening.

[0023] By setting a limit spring 11.19 on the upper outer surface of the limit screw 11.18, the limit screw 11.19 is abutted, which can prevent it from loosening during use, causing connection interruption and other problems that affect use.

[0024] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-current busbar plug for a gas-insulated switchgear, characterized in that: The device includes a plug-in head housing (2), a protective cylinder (4), and an anti-detachment device (11). The plug-in head housing (2) has a busbar body (1) inside. One end of the plug-in head housing (2) is provided with a fixing ring (3), and one end of the fixing ring (3) is provided with a protective cylinder (4). The end connector of the busbar body (1) extends into the interior of the protective cylinder (4). The top and bottom ends of the interior of the protective cylinder (4) are provided with movable cavities (5). A spring (6) is provided in the movable cavity (5). A clamping plate (7) is provided at the bottom end of the spring (6). Guide blocks (8) are fixedly installed at both ends of the clamping plate (7). A guide rail (9) is provided on the inner wall of the movable cavity (5). The guide block (8) and the guide rail (9) are slidably connected. The outer surface of the plug-in head housing (2) is provided with symmetrical anti-detachment devices (11).

2. The high-current busbar plug for a gas-insulated switchgear according to claim 1, characterized in that: A rubber pad (10) is fixedly installed on the inner wall of the clamping plate (7), and the rubber pad (10) is made of anti-slip rubber material.

3. The high-current busbar plug for a gas-insulated switchgear according to claim 1, characterized in that: The anti-fall-off device (11) includes a support plate (11.1), a fixed plate (11.11) is hinged inside the support plate (11.1), a sliding plate (11.12) is provided through one end of the fixed plate (11.11), the fixed plate (11.11) and the sliding plate (11.12) are slidably connected, and an arc-shaped clamping sleeve (11.13) is fixedly installed at the other end of the sliding plate (11.12). The number of arc-shaped clamping sleeves (11.13) is set to two, one of which is an arc-shaped clamping sleeve (11.13). A positioning block (11.14) is fixedly installed on the surface of another arc-shaped clamping sleeve (11.13), and a socket (11.15) is fixedly installed on the surface of the other arc-shaped clamping sleeve (11.13). A plug plate (11.16) is provided through the positioning block (11.14). The positioning block (11.14) and the plug plate (11.16) are slidably connected. The other end of the plug plate (11.16) passes through the socket (11.15) and is slidably connected to the socket (11.15). The positioning block (11.14) is threadedly connected to a limit screw (11.18).

4. A high-current busbar plug for a gas-insulated switchgear according to claim 3, characterized in that: The outer surface of the insert plate (11.16) is provided with a plurality of threaded holes (11.17) that cooperate with the limiting screw (11.18), and the plurality of threaded holes (11.17) are arranged in an array.

5. A high-current busbar plug for a gas-insulated switchgear according to claim 3, characterized in that: A limit spring (11.19) is provided on the outer surface of the upper end of the limit screw (11.18).

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