A high-voltage disconnector

Abstract

The utility model relates to a kind of high-voltage disconnecting switch, pre-assembly and detection are carried out to each component by modular design when installation is facilitated, improve installation efficiency, when maintenance, malfunctioning component can be quickly positioned and replaced, reduce maintenance cost and time, simultaneously, front contact is installed on the limiting plate of second porcelain bottle subassembly, rear contact is installed on first porcelain bottle subassembly, contact blade is set between front and rear contact, make the whole switch structure compact, in addition, the pull ring installed on first pivot provides convenient operating point for operator, pulling pull ring can drive contact blade to rotate around pivot, realize the switching of switch, the setting of locking hook and catch groove forms reliable locking mechanism, when opening or closing, the catch of locking hook can be accurately clamped into the catch groove in limiting plate, the design of torsion spring can make it more stably play a role in switch operation process, more evenly exert spring force, ensure the stability and accuracy of locking hook action.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular to a high-voltage disconnecting switch. Background Technology

[0002] In power systems, high-voltage disconnect switches are critical equipment for ensuring safe and stable operation. They play a vital role in isolating power sources during circuit maintenance and equipment switching to protect personnel and equipment safety, and their performance directly affects the reliability of the power supply system. However, traditional high-voltage disconnect switches have many shortcomings. In terms of installation and maintenance, they often adopt integrated or highly integrated designs, with closely related components that are difficult to pre-assemble and test independently. They require complete assembly before comprehensive testing, and once a problem is discovered, extensive disassembly and repair are necessary, increasing installation difficulty, workload, and time, and reducing installation efficiency. During maintenance, due to the high integration, it is difficult to quickly and accurately locate the fault point, potentially requiring the replacement of the entire component, increasing maintenance costs and time. In terms of structural layout, some traditional switches have unreasonable layouts, loose overall structures, and occupy a large space. The operating mechanism of traditional switches is simple in design and lacks effective locking and buffering devices. In terms of electrical contact performance, the connection method between the front and rear contacts and the contact blades of traditional switches is not ideal, making it difficult to maintain good electrical contact under various operating conditions. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a high-voltage disconnecting switch that is easy to install and maintain, has a compact structure, stable operation, and good electrical performance.

[0004] To achieve the above objectives, this utility model employs a high-voltage disconnect switch, comprising a base on which a first porcelain insulator assembly and a second porcelain insulator assembly are respectively mounted. A rear contact is mounted on the first porcelain insulator assembly, and a limit plate is mounted on the second porcelain insulator assembly. A front contact is mounted on the limit plate. A first contact blade and a second contact blade are disposed between the front and rear contacts. The two ends of the first and second contact blades are respectively connected to the front and rear contacts by bolts. A first rotating shaft and a second rotating shaft are respectively disposed between the first and second contact blades. The shaft has a pull ring mounted on the first shaft and a torsion spring and a locking hook mounted on the second shaft. The torsion spring includes a spiral body located on both sides of the locking hook, with one end extending downward to form a hook-shaped part and fitting onto the locking hook, and the other end extending towards the pull ring to form a long rod part with its end portion abutting against the first shaft. One end of the locking hook extends towards the pull ring, and the other end forms a hook. The limiting plate is provided with a hook groove corresponding to the hook. The pull ring is provided with a stop block corresponding to the locking hook, and the locking hook is provided with a corresponding stop surface corresponding to the stop block.

[0005] The advantages of the above structure are as follows: Modular design facilitates pre-assembly and testing of components during installation, improving installation efficiency; during maintenance, faulty components can be quickly located and replaced, reducing maintenance costs and time. Simultaneously, the front contact is mounted on the limiting plate of the second porcelain insulator assembly, the rear contact is mounted on the first porcelain insulator assembly, and the contact blade is positioned between the front and rear contacts, making the entire switch structure compact. Furthermore, the pull ring mounted on the first rotating shaft provides a convenient operating point for the operator; pulling the pull ring causes the contact blade to rotate around the shaft, realizing the opening and closing operation of the switch. The locking hook and latching groove form a reliable locking mechanism. During opening or closing, the latching hook accurately engages with the latching groove on the limiting plate, firmly locking the contact blade in the corresponding position, preventing accidental movement of the contact blade due to external factors. The torsion spring design allows it to function more stably during switch operation, applying elastic force more evenly, ensuring the smoothness and accuracy of the locking hook's movement, reducing malfunctions caused by unstable elastic force, and improving the overall performance and reliability of the switch.

[0006] This utility model is further configured such that the front contact is connected to the first and second contact blades via a first bolt. The first bolt extends to one side of the second contact blade and is fitted with a first and a second spring cap. A first compression spring is provided between the first and second spring caps. The first contact blade has a tripping limit plate at one end near the rear contact. The rear contact and the tripping limit plate are connected to the first and second contact blades via a second bolt. The second bolt extends to one side of the second contact blade and is fitted with a third and a fourth spring cap. A second compression spring is provided between the third and fourth spring caps. This connection method, using bolts, spring caps, and compression springs between the front and rear contacts and the contact blades, ensures good electrical contact, reduces contact resistance, and improves electrical transmission efficiency.

[0007] This utility model is further configured such that both the first and second porcelain insulator assemblies include a lower mounting plate mounted on a base, a porcelain insulator mounted on the lower mounting plate, and an upper mounting plate mounted on the porcelain insulator. The layered structure of the porcelain insulator assemblies provides a stable foundation support for the switch, evenly distributing weight and stress, thus ensuring stable operation of the switch. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0009] Figure 2 This is a schematic diagram of the assembly of the pull ring, torsion spring, and locking hook according to an embodiment of the present invention.

[0010] Figure 3 This is a front view of the assembly of the pull ring, torsion spring, and locking hook according to an embodiment of the present invention.

[0011] Figure 4 This is a schematic diagram of the assembly of the front and rear contacts with the contact blade according to an embodiment of the present invention. Detailed Implementation

[0012] like Figures 1-4 As shown, an embodiment of the present invention provides a high-voltage disconnect switch, including a base 1, on which a first porcelain insulator assembly 2 and a second porcelain insulator assembly 3 are respectively installed. The first porcelain insulator assembly 2 and the second porcelain insulator assembly 3 have the same structure, each consisting of a lower mounting plate 11 installed on the base 1, a porcelain insulator 12 fixedly installed on the lower mounting plate 11, and an upper mounting plate 13 fixedly installed on the porcelain insulator 12.

[0013] A rear contact 4 is fixedly mounted on the upper mounting plate 13 of the first porcelain insulator assembly 2. A limiting plate 31 is fixedly mounted on the upper mounting plate 13 of the second porcelain insulator assembly 3. A front contact 5 is fixedly mounted on the limiting plate 31. A first contact blade 6 and a second contact blade 7 are provided between the front contact 5 and the rear contact 4. The two ends of the first contact blade 6 and the second contact blade 7 are respectively fixedly connected to the front contact 5 and the rear contact 4 by bolts. Specifically, the front contact 5 is fixedly connected to the first contact blade 6 and the second contact blade 7 by a first bolt 51. The first bolt 51 extends to one side of the second contact blade 7 and is sequentially fitted onto it. A first spring cap 52 and a second spring cap 53 are provided. A first compression spring 54 is provided between the first spring cap 52 and the second spring cap 53. A tripping limit plate 41 is provided in the first contact knife 6 near the rear contact 4 to limit the position of the switch when it is tripped. The rear contact 4 and the tripping limit plate 41 are fixedly connected to the first contact knife 6 and the second contact knife 7 by a second bolt 42. The second bolt 42 extends to one side of the second contact knife 7 and is fitted with a third spring cap 43 and a fourth spring cap 44 in sequence. A second compression spring 45 is provided between the third spring cap 43 and the fourth spring cap 44.

[0014] A first rotating shaft 8 and a second rotating shaft 9 are respectively provided between the first contact blade 6 and the second contact blade 7. A pull ring 81 is installed on the first rotating shaft 8, and a torsion spring 91 and a locking hook 92 are installed on the second rotating shaft 9. The torsion spring 91 includes a spiral body part 911 located on both sides of the locking hook 92, and one end extends downward to form a hook-shaped part 912 and is sleeved on the locking hook 92. The other end extends towards the pull ring 81 to form a long rod part 913 and the end part abuts against the first rotating shaft 8. One end of the locking hook 92 extends towards the pull ring 81, and the end of the other end forms a hook 921. A hook groove 311 is provided on the limiting plate 31 corresponding to the hook 921. The pull ring 81 is provided with an abutment block 811 corresponding to the locking hook 92, and the locking hook 92 is provided with a corresponding abutment surface corresponding to the abutment block 811.

[0015] Of course, in addition to the above embodiments, this utility model may have other various embodiments. Without departing from the essential technical solution of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, and these changes or modifications are equivalent to the technical solution in this patent. Therefore, these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A high voltage disconnector, characterized by: The device includes a base on which a first porcelain insulator assembly and a second porcelain insulator assembly are mounted. A rear contact is mounted on the first porcelain insulator assembly, and a limiting plate is mounted on the second porcelain insulator assembly. A front contact is mounted on the limiting plate. A first contact blade and a second contact blade are positioned between the front and rear contacts. The two ends of the first and second contact blades are connected to the front and rear contacts respectively by bolts. A first rotating shaft and a second rotating shaft are positioned between the first and second contact blades. A pull ring is mounted on the first rotating shaft, and a torsion spring and a locking hook are mounted on the second rotating shaft. The torsion spring includes a helical body located on both sides of the locking hook, with one end extending downwards to form a hook-shaped portion and fitting onto the locking hook, and the other end extending towards the pull ring to form a long rod portion, the end of which abuts against the first rotating shaft. One end of the locking hook extends towards the pull ring, and the other end forms a latch. A latch groove is provided on the limiting plate corresponding to the latch. A stop block is provided on the pull ring corresponding to the locking hook, and a corresponding stop surface is provided on the locking hook corresponding to the stop block.

2. The high voltage disconnector according to claim 1, characterized in that: The front contact is connected to the first and second contact blades by a first bolt. The first bolt extends to one side of the second contact blade and is fitted with a first spring cap and a second spring cap. A first compression spring is provided between the first and second spring caps. The first contact blade has a tripping limit plate at one end near the rear contact. The rear contact and the tripping limit plate are connected to the first and second contact blades by a second bolt. The second bolt extends to one side of the second contact blade and is fitted with a third and a fourth spring cap. A second compression spring is provided between the third and fourth spring caps.

3. The high voltage disconnector according to claim 1, characterized in that: Both the first porcelain bottle assembly and the second porcelain bottle assembly include a lower mounting plate mounted on a base, a porcelain bottle mounted on the lower mounting plate, and an upper mounting plate mounted on the porcelain bottle.

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