Vacuum arc extinguishing chamber quick dismounting mechanism of high voltage direct current contactor

Abstract

The utility model relates to vacuum arc-extinguishing chamber technical field and disclose high pressure direct current contactor's vacuum arc-extinguishing chamber quick dismounting and mounting mechanism, including the installation seat and the vacuum arc-extinguishing chamber main part of card in the installation seat of U type state setting, vacuum arc-extinguishing chamber main part top middle part is equipped with the installation support of U type state setting, the top of installation support all symmetrical sliding joint has the pusher, the bottom of pusher all fixedly connected with the sliding block, the one end of sliding block all fixedly connected with push rod, and the one end of push rod all fixedly connected with the piston, the top of installation support is equipped with the sliding cavity and piston cavity of the caliber all with the caliber of sliding block and piston matching, and all fixedly connected with reset spring between sliding cavity and sliding block, the both bottom of installation support all fixedly connected with the support, and the both outer wall of support all are equipped with the taper mouth, and the inner wall edge department all of taper mouth inlayed and set up with the clamping air bag, the utility model reduces the dismounting time, improved the efficiency, avoided the problem that the bolt scattered and installed the alignment inaccuracy simultaneously, promoted the assembly accuracy and equipment reliability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum interrupter technology, specifically a quick disassembly and assembly mechanism for the vacuum interrupter of a high-voltage DC contactor. Background Technology

[0002] In modern power systems, high-voltage direct current (HVDC) technology, with its advantages of high efficiency, low loss, and long-distance power transmission, is widely used in fields such as new energy grid connection and urban power grid supply. As a key control component, the HVDC contactor is responsible for the breaking and connecting of circuits, and its core component, the vacuum interrupter, directly affects the reliability and safety of the equipment.

[0003] Traditional high-voltage DC contactors typically use bolts to fasten the vacuum interrupter to the frame. Disassembly requires tools to unscrew each bolt, a tedious and time-consuming process. The removed bolts are easily scattered and lost, or their haphazard placement makes it difficult to align them quickly during reinstallation, reducing assembly efficiency. To address this, we propose a quick disassembly and assembly mechanism for the vacuum interrupter of high-voltage DC contactors. Utility Model Content

[0004] The purpose of this invention is to provide a quick disassembly and assembly mechanism for the vacuum interrupter chamber of a high-voltage DC contactor, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick disassembly and assembly mechanism for the vacuum interrupter of a high-voltage DC contactor, comprising a U-shaped mounting base and a vacuum interrupter body fitted into the mounting base, wherein the lower ends of the two shells of the vacuum interrupter body are symmetrically fixedly connected with locking blocks, and bolts are threaded onto the locking blocks;

[0006] A U-shaped mounting bracket is installed at the top center of the main body of the vacuum interrupter. Push blocks are symmetrically slidably engaged at the top of the mounting bracket. A slider is fixedly connected to the bottom of each push block. A push rod is fixedly connected to one end of each slider. A piston is fixedly connected to one end of each push rod. A sliding cavity and a piston cavity with diameters matching the diameters of the slider and piston are opened at the top of the mounting bracket. A return spring is fixedly connected between the sliding cavity and the slider. Support rods are fixedly connected to both bottom ends of the mounting bracket. A tapered opening is opened on both outer walls of the support rod. A clamping airbag is embedded at the edge of the inner wall of the tapered opening. A guide tube is provided in each clamping airbag, which passes through the support rod and the mounting bracket and extends into the piston cavity.

[0007] Preferably, the mounting base has symmetrically provided slots on both inner sidewalls, with the diameter matching that of the card block.

[0008] Preferably, an elastic rubber pull rope is fixedly connected to the groove at the top of the push block.

[0009] Preferably, each of the inner walls of the conical opening is fixedly connected with a magnetic block, and the magnetic blocks are magnetically connected to the bolts.

[0010] Preferably, the tapered openings are all positioned perpendicular to the bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: During disassembly, the magnetic block can attract the bolt to prevent it from being lost, and pulling the elastic rubber rope will cause the clamping airbag to expand and firmly clamp the bolt, thus quickly completing the disassembly and fixing the bolt in an orderly manner; During installation, the bolt is attracted to the magnetic block for easy alignment and installation, and the structure of the clamping airbag can stabilize the assembly, reduce disassembly and assembly time, improve efficiency, and avoid the problems of bolt scattering and inaccurate installation, thereby improving assembly accuracy and equipment reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the vacuum interrupter structure of this utility model;

[0014] Figure 3 This is a cross-sectional structural diagram of the mounting frame and support rod of this utility model;

[0015] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0016] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0017] In the diagram: 1. Mounting base; 101. Slot; 11. Vacuum interrupter main body; 12. Locking block; 13. Bolt; 2. Mounting bracket; 201. Conical opening; 202. Sliding chamber; 203. Piston chamber; 21. Push block; 22. Elastic rubber pull rope; 23. Support rod; 24. Magnetic block; 25. Clamping airbag; 26. Air guide tube; 210. Slider; 211. Return spring; 212. Push rod; 213. Piston. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5The present invention provides the following technical solution:

[0020] Example 1: A quick assembly and disassembly mechanism for the vacuum interrupter of a high-voltage DC contactor, comprising a U-shaped mounting base 1 and a vacuum interrupter body 11 fitted into the mounting base 1. The lower ends of the two shells of the vacuum interrupter body 11 are symmetrically fixedly connected with locking blocks 12, and bolts 13 are threaded onto the locking blocks 12. The two inner sidewalls of the mounting base 1 are symmetrically provided with slots 101 with a diameter matching the locking blocks 12.

[0021] In use, when it is necessary to install the vacuum interrupter body 11, align the locking block 12 with the slot 101 and slide it into the bottom. After insertion, rotate the bolt 13 to make it threadedly connected with the mounting base 1 and gradually tighten it until the locking block 12 is firmly fixed in the slot 101, thus completing the installation of the vacuum interrupter body 11. To disassemble, rotate the bolt 13 in the opposite direction to disengage it from the mounting base 1, and then the vacuum interrupter body 11 can be removed from the mounting base 1.

[0022] Example 2: The technical solution of this example, which differs from Example 1, includes: a U-shaped mounting bracket 2 installed at the top center of the vacuum interrupter body 11; push blocks 21 symmetrically slidingly engaging at the top of each mounting bracket 2; sliders 210 fixedly connected to the bottom of each push block 21; push rods 212 fixedly connected to one end of each slider 210; and pistons 213 fixedly connected to one end of each push rod 212. The top of the mounting bracket 2 has sliding cavities 202 and piston cavities 203, the diameters of which match the diameters of the sliders 210 and pistons 213, respectively. The sliding cavities 202 and sliders 210 are fixedly connected... A return spring 211 is connected to the mounting bracket 2. Support rods 23 are fixedly connected to both bottom ends. Conical openings 201 are opened on both outer walls of the support rods 23. Clamping airbags 25 are embedded in the inner edge of the conical openings 201. Air guide tubes 26 are provided in the clamping airbags 25, which pass through the support rods 23 and the mounting bracket 2 and extend into the piston chamber 203. An elastic rubber pull rope 22 is fixedly connected to the groove at the top of the push block 21. Magnetic blocks 24 are fixedly connected to the inner side walls of the conical openings 201, and the magnetic blocks 24 are magnetically connected to the bolts 13. The conical openings 201 are all in a vertical and horizontal position with the bolts 13.

[0023] In use, when the main body 11 of the vacuum interrupter needs to be disassembled, first rotate the bolt 13 in the opposite direction to disengage it from the locking block 12 and attract it through the magnetic block 24. Repeat the same operation for the next bolt 13 to pre-fix several bolts 13. Then, pull the elastic rubber cord 22 and move the push block 21 to both inner ends. The push block 21 slides and drives the slider 210 to slide along the sliding cavity 202. The slider 210 moves accordingly and compresses the return spring 211. At the same time, the push rod 212 pushes the piston 213 to move in the piston cavity 203, so that the gas in the piston cavity 203 enters the clamping airbag 25 through the air guide tube 26. The clamping airbag 25 expands and tightly presses against the bolt 13 to achieve further stable clamping of the bolt 13. At this time, the magnetic block 24 is magnetically connected to the bolt 13, further enhancing the fixing effect of the bolt 13. When the vacuum interrupter body 11 needs to be removed, it can be completely removed by simply sliding it upwards. When it needs to be assembled, it is only necessary to attach several bolts 13 to the magnetic block 24, thereby improving the disassembly and assembly efficiency.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick assembly and disassembly mechanism for the vacuum interrupter of a high voltage DC contactor, comprising a U-shaped mounting base (1) and a vacuum interrupter body (11) fitted into the mounting base (1), wherein the lower ends of the two shells of the vacuum interrupter body (11) are symmetrically fixedly connected with locking blocks (12), and each locking block (12) is threaded with bolts (13). Its features are: The vacuum interrupter body (11) is equipped with a U-shaped mounting bracket (2) at the top center. Each mounting bracket (2) has a push block (21) symmetrically slidably connected to its top. Each push block (21) has a slider (210) fixedly connected to its bottom end. Each slider (210) has a push rod (212) fixedly connected to one end. Each push rod (212) has a piston (213) fixedly connected to one end. The top of the mounting bracket (2) has a sliding cavity (202) with a diameter matching that of the slider (210) and the piston (213). The mounting bracket (2) is fixedly connected to the piston chamber (203) and the sliding chamber (202) and the slider (210), and a return spring (211) is fixedly connected between them. The mounting bracket (2) is fixedly connected to the two bottom ends of the mounting bracket (2). The two outer walls of the mounting bracket (23) are provided with tapered openings (201). The inner edge of the tapered opening (201) is embedded with a clamping airbag (25). The clamping airbag (25) is provided with an air guide tube (26) that passes through the mounting bracket (23) and the mounting bracket (2) and extends into the piston chamber (203).

2. The quick disassembly and assembly mechanism for the vacuum interrupter chamber of the high-voltage DC contactor according to claim 1, characterized in that: The mounting base (1) has symmetrical slots (101) on both inner side walls that match the diameter of the card block (12).

3. The quick disassembly and assembly mechanism for the vacuum interrupter chamber of the high-voltage DC contactor according to claim 1, characterized in that: An elastic rubber rope (22) is fixedly connected to the groove at the top of the push block (21).

4. The quick disassembly and assembly mechanism for the vacuum interrupter chamber of the high-voltage DC contactor according to claim 1, characterized in that: The inner wall of the conical opening (201) is fixedly connected with a magnetic block (24), and the magnetic block (24) is magnetically connected to the bolt (13).

5. The quick disassembly and assembly mechanism for the vacuum interrupter chamber of the high-voltage DC contactor according to claim 1, characterized in that: The conical opening (201) is perpendicular to the bolt (13).

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