Bipolar repulsion three-position disconnector and excitation device

Abstract

The application provides a bipolar repulsion three-position isolating switch and an excitation device, which comprises a mounting frame, an incoming line assembly, a first outgoing line assembly, a second outgoing line assembly, a knife switch assembly, a driving assembly and an operating mechanism. The incoming line assembly is provided with a first incoming line position and a second incoming line position. The first outgoing line assembly is provided with a first outgoing line position and a second outgoing line position, and the first outgoing line position is connected with the second outgoing line position. The second outgoing line assembly is provided with a third outgoing line position and a fourth outgoing line position, and the third outgoing line position is connected with the fourth outgoing line position. A first isolation position is arranged between the first outgoing line position and the third outgoing line position, and a second isolation position is arranged between the second outgoing line position and the fourth outgoing line position. The knife switch assembly comprises a first knife switch and a second knife switch, and the first end of the first knife switch is rotationally connected to the first incoming line position. The driving assembly is connected with the knife switch assembly, and the operating mechanism is connected with the driving assembly. The application can realize polarity conversion, and the conversion process is simple and easy to operate, thereby reducing the difficulty of polarity conversion and improving the convenience.

Description

Technical Field

[0001] This application relates to the field of disconnecting switch technology, and in particular to a bipolar mutually exclusive three-position disconnecting switch and excitation device. Background Technology

[0002] In the excitation device, because the current passes through the contact surface of the carbon brush and slip ring, and the direct conduction part is constantly changing, and the current density is very high, the temperature at some points becomes very high. Due to the high temperature of the electric arc, the two electrode surfaces on both sides will locally melt and fall off, and the metal will turn into metal vapor. The carbon brush will become structurally loose and fall off due to oxidation and corrosion. This is the manifestation of electrical wear. However, the wear conditions are different for different polarities. Under the action of the electric arc, the anode surface is locally heated and evaporates "metal vapor", causing corrosion of the anode surface. This is called "anode evaporation". The cathode emits electrons due to positive ion bombardment and high temperature, causing damage to the cathode surface. This is called "cathode pulverization".

[0003] When current flows from the carbon brush to the slip ring, with the carbon brush as the positive electrode and the slip ring as the negative electrode, the result is: a small degree of anodic evaporation occurs on the carbon brush surface, carbon particles and graphite ions migrate to the slip ring surface, the carbon brush experiences electrical wear, and the slip ring surface undergoes slight cathodic pulverization, with carbon particles and graphite adhering to it, forming a smooth, glossy mirror surface, and mechanical wear is minimal. When current flows from the slip ring to the carbon brush, with the carbon brush as the negative electrode and the slip ring as the positive electrode, the result is: cathodic pulverization occurs on the carbon brush surface, electrical wear is minimal, and anodic evaporation occurs on the slip ring surface, with a large amount of metal evaporating, causing severe surface corrosion. Simultaneously, these metal particles easily adhere to the carbon brush wear surface, which in turn causes severe wear on the commutator surface, resulting in streaks. In this case, the slip ring surface is rough, has a metallic sheen, and exhibits significant inter-surface mechanical wear. In general, when the carbon brush is the positive electrode, the electrical wear of the carbon brush is large, while the mechanical wear is slight, resulting in very little electrical and mechanical wear on the slip ring. Conversely, when the carbon brush is the negative electrode, the electrical wear of the carbon brush is small, while the mechanical wear is large, resulting in significant electrical and mechanical wear on the slip ring. Therefore, to ensure more even wear, the polarity of the two slip rings should be frequently reversed to guarantee the same degree of wear on both slip rings.

[0004] However, most existing excitation devices use a direct connection with rigid copper busbars, which makes polarity reversal difficult. Or, when reversing polarity, the busbars need to be cut and rearranged, which is a lot of work and makes polarity reversal very inconvenient. Summary of the Invention

[0005] This application provides a bipolar mutually exclusive three-position disconnect switch and excitation device. By operating the first and second disconnect switches, the connected conductive circuit is changed, thereby changing the polarity of the rotor and realizing polarity reversal. The reversal process is simple and easy to operate, reducing the difficulty of polarity reversal and improving convenience.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] The first aspect of this application provides a bipolar mutually exclusive three-position disconnect switch, including a mounting bracket, an inlet assembly, a first outlet assembly, a second outlet assembly, a disconnector assembly, a drive assembly, and an operating mechanism. The inlet assembly has a first inlet position and a second inlet position. The first outlet assembly has a first outlet position and a second outlet position, connected to the second outlet position. The second outlet assembly has a third outlet position and a fourth outlet position, connected to the fourth outlet position. A first isolation position is provided between the first outlet position and the third outlet position, and a second isolation position is provided between the second outlet position and the fourth outlet position. The disconnector assembly includes a first disconnector and a second disconnector. The first end of the first disconnector is rotatably connected to the first inlet position, and the second end of the first disconnector... The first end of the second disconnect switch is used to connect to the first outgoing position or the third outgoing position or to be in the first isolation position. The first end of the second disconnect switch is rotatably connected to the second incoming position. The second end of the second disconnect switch is used to connect to the second outgoing position or the fourth outgoing position or to be in the second isolation position. The drive assembly is connected to the disconnect switch assembly and is used to drive the first disconnect switch and the second disconnect switch to rotate. When the first disconnect switch is connected to the first outgoing position, the second disconnect switch is connected to the fourth outgoing position. When the first disconnect switch is connected to the third outgoing position, the second disconnect switch is connected to the second outgoing position. When the first disconnect switch is in the first isolation position, the second disconnect switch is in the second isolation position. The operating mechanism is connected to the drive assembly and is used to operate the drive assembly.

[0008] This bipolar mutually exclusive three-position disconnect switch can switch between two conductive circuits. The first conductive circuit is: first incoming position - first disconnect switch - first outgoing position, second incoming position - second disconnect switch - fourth outgoing position. The second conductive circuit is: first incoming position - first disconnect switch - third outgoing position, second incoming position - second disconnect switch - second outgoing position. Since the first outgoing position and the second outgoing position are connected, and the third outgoing position and the fourth outgoing position are connected, the current flowing through these two conductive circuits is in opposite directions. By switching between the two conductive circuits, the current reversal is achieved.

[0009] In use, the first and third outgoing terminals of the bipolar mutually exclusive three-position disconnect switch are connected to the two poles of the rotor, and the first and second incoming terminals are connected to the two poles of the excitation system. In this way, the polarity of the rotor can be reversed by switching between the two conductive circuits.

[0010] Compared to existing technologies, this bipolar mutually exclusive three-position disconnect switch can change the polarity of the rotor by operating the first and second disconnect switches to change the connected conductive circuit. This polarity reversal is simple, easy to operate, reduces the difficulty of polarity reversal, and improves convenience.

[0011] In one embodiment of this application, the incoming line assembly includes an incoming line insulator, a first incoming line plate, and a second incoming line plate. The incoming line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The first incoming line plate and the second incoming line plate are disposed at intervals on the incoming line insulator. The first incoming line plate forms the first incoming line position, and the second incoming line plate forms the second incoming line position.

[0012] The first outgoing line assembly includes a first outgoing line insulator, a first outgoing line plate, and a second outgoing line plate. The first outgoing line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The first outgoing line plate and the second outgoing line plate are disposed at intervals on the first outgoing line insulator. The first outgoing line plate is flush with the first incoming line plate, and the second outgoing line plate is flush with the second incoming line plate. The first outgoing line plate forms the first outgoing line position, and the second outgoing line plate forms the second outgoing line position.

[0013] The second outgoing line assembly includes a second outgoing line insulator, a third outgoing line plate, and a fourth outgoing line plate. The second outgoing line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The second outgoing line insulator and the first outgoing line insulator are spaced apart along the length direction of the mounting frame. The third outgoing line plate and the fourth outgoing line plate are spaced apart on the second outgoing line insulator. The third outgoing line plate is flush with the first incoming line plate, and the fourth outgoing line plate is flush with the second incoming line plate. The third outgoing line plate forms the third outgoing line position, and the fourth outgoing line plate forms the fourth outgoing line position.

[0014] The first end of the first disconnect switch is rotatably connected to the first incoming line plate, and the first end of the second disconnect switch is rotatably connected to the second incoming line plate.

[0015] In one embodiment of this application, the drive assembly includes a first spindle, a second spindle, a first crank arm, a second crank arm, a first connecting rod, and a second connecting rod;

[0016] The first main shaft is rotatably connected to the mounting bracket and extends along the width direction of the mounting bracket. The first main shaft is provided with a first gear. The first crank arm is disposed on the first main shaft. The first end of the first connecting rod is rotatably connected to the first crank arm. The second end of the first connecting rod is rotatably connected to the first knife switch.

[0017] The second main shaft is rotatably connected to the mounting bracket and extends along the width direction of the mounting bracket. The second main shaft is provided with a second gear, which meshes with the first gear. The second crank arm is disposed on the second main shaft. The first end of the second connecting rod is rotatably connected to the second crank arm, and the second end of the second connecting rod is rotatably connected to the second knife switch.

[0018] When the first main shaft rotates, it can drive the second main shaft to rotate, which in turn drives the first crank arm and the second crank arm to rotate in opposite directions, thereby driving the first knife gate and the second knife gate to rotate in opposite directions.

[0019] In one embodiment of this application, the operating mechanism includes an operating box and an operating lever. The operating box is provided with a transmission mechanism. The first main shaft extends into the operating box and is connected to the transmission mechanism. The transmission mechanism is provided with an operating shaft that extends out of the operating box. The operating lever is detachably connected to the operating shaft.

[0020] In one embodiment of this application, the transmission mechanism includes a first bevel gear, a second bevel gear, a lead screw, a lead screw nut, and a shift fork. The first bevel gear is disposed on the operating shaft, the second bevel gear is disposed on the lead screw and meshes with the first bevel gear, the lead screw nut is screwed onto the lead screw, the open end of the shift fork is engaged with the lead screw nut, and the other end of the shift fork forms a mounting cylinder and the mounting cylinder is rotatably connected to the operating box.

[0021] The first spindle is installed inside the mounting cylinder;

[0022] When the operating shaft rotates, the lead screw can drive the lead screw nut to rise and fall, thereby driving the shift fork to rotate, and in turn driving the first main shaft to rotate.

[0023] In one embodiment of this application, the first end of the first spindle passes through the operation box, and the first end of the first spindle is provided with a positioning arc plate, and the positioning arc plate is provided with a positioning slot.

[0024] A hook is rotatably connected to the operation box, and a torsion spring is provided between the hook and the operation box. The hook abuts against the positioning arc plate. When the first knife switch is in the first isolation position, the hook part of the hook is engaged into the positioning slot under the elastic force of the torsion spring.

[0025] In one embodiment of this application, the operation box is provided with an unlocking rod near the hook, the bottom end of the hook is connected to the unlocking rod, and the unlocking rod is connected to a spring. When the unlocking rod is compressed by an external force, the hook part of the hook separates from the positioning slot. When the external force disappears, the spring returns to its original position.

[0026] In one embodiment of this application, the mounting bracket is provided with a limiting component, the limiting component including a limiting baffle and a limiting sleeve, the limiting sleeve being mounted on the first main shaft, and the limiting sleeve being provided with a first limiting post and a second limiting post;

[0027] When the first disconnector is connected to the first outgoing line position, the first limiting post abuts against the limiting baffle. When the first disconnector is connected to the third outgoing line position, the second limiting post abuts against the limiting baffle.

[0028] In one embodiment of this application, the mounting bracket is provided with a first signal switch and a second signal switch. The first signal switch is provided with a first signal light and a second signal light. The first spindle is connected to the first signal switch. When the first knife switch is connected to the first outgoing position, the first signal switch turns on the first signal light. When the first knife switch is connected to the third outgoing position, the first signal switch turns on the second signal light.

[0029] The second signal switch is equipped with a third signal light. The second main shaft is connected to the second signal switch. When the first knife switch is in the first isolation position, the second signal switch turns on the third signal light.

[0030] The second aspect of this application provides an excitation device, including a device body and a bipolar mutually exclusive three-position isolating switch as described in the first aspect. The positive terminal of the device body is connected to the first input terminal, the negative terminal of the device body is connected to the second input terminal, the first output terminal is connected to the first pole of the rotor, and the third output terminal is connected to the second pole of the rotor.

[0031] Compared to existing technologies, this excitation device includes a bipolar mutually exclusive three-position isolating switch, which can realize the polarity reversal of the rotor, making operation simple, reducing the difficulty of polarity reversal, and improving convenience. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A three-dimensional structural schematic diagram of a bipolar mutually exclusive three-position disconnecting switch provided in an embodiment of this application;

[0034] Figure 2A three-dimensional structural diagram of a bipolar mutually exclusive three-position disconnecting switch provided in one embodiment of this application, from another direction;

[0035] Figure 3 A three-dimensional structural diagram of an inlet assembly, a first outlet assembly, a second outlet assembly, and a drive assembly used in a bipolar mutually exclusive three-position disconnector provided in an embodiment of this application, mounted on a mounting bracket;

[0036] Figure 4 A three-dimensional structural diagram of an embodiment of the present application showing the incoming line assembly, first outgoing line assembly, second outgoing line assembly and drive assembly of a bipolar mutually exclusive three-position disconnecting switch mounted on a mounting bracket from another direction.

[0037] Figure 5 A front view of the structure of an embodiment of the present application, showing the incoming line assembly, first outgoing line assembly, second outgoing line assembly and drive assembly of a bipolar mutually exclusive three-position disconnect switch mounted on a mounting bracket;

[0038] Figure 6 A cross-sectional view of the transmission mechanism used in a bipolar mutually exclusive three-position disconnector provided in an embodiment of this application;

[0039] Figure 7 for Figure 1 A magnified view of a section at point A in the middle;

[0040] Figure 8 A three-dimensional structural diagram of a limiting component used in a bipolar mutually exclusive three-position disconnecting switch, provided in an embodiment of this application, mounted on a mounting frame;

[0041] Figure 9 A front view of the structure of a bipolar mutually exclusive three-position disconnector provided in an embodiment of this application, showing the first signal switch and the second signal switch mounted on a mounting bracket;

[0042] Figure 10 This is a three-dimensional structural schematic diagram of an excitation device provided in an embodiment of this application.

[0043] Figure label:

[0044] 100. Double-pole mutually exclusive three-position disconnector; 150. Mounting bracket; 200. Incoming line assembly; 210. First incoming line position; 211. First incoming line plate; 220. Second incoming line position; 221. Second incoming line plate; 230. Incoming line insulator; 250. First outgoing line assembly; 260. First outgoing line position; 261. First outgoing line plate; 270. Second outgoing line position; 271. Second outgoing line plate; 280. First outgoing line insulator; 290. 300. First conductor plate; 310. Second outgoing line assembly; 311. Third outgoing line position; 320. Third outgoing line plate; 321. Fourth outgoing line plate; 330. Second outgoing line insulator; 340. Second conductor plate; 400. Knife switch assembly; 410. First knife switch; 420. Second knife switch; 450. Drive assembly; 451. First main shaft; 452. Second main shaft; 453. First crank arm; 454. Second crank arm ; 455. First connecting rod; 456. Second connecting rod; 457. First gear; 458. Second gear; 500. Operating mechanism; 510. Operating box; 511. Positioning arc plate; 5111. Positioning slot; 512. Hook; 513. Unlocking rod; 514. Spring; 520. Operating lever; 530. Transmission mechanism; 531. Operating shaft; 532. First bevel gear; 533. Second bevel gear; 534. Lead screw; 535 536. Nut; 537. Shift fork; 538. Mounting cylinder; 550. Limiting assembly; 560. Limiting baffle; 570. Limiting sleeve; 571. First limiting post; 572. Second limiting post; 600. First signal switch; 610. Second signal switch; 700. Excitation device; 710. Device body; 711. Positive pole of device body; 712. Negative pole of device body; 720. First pole of rotor; 730. Second pole of rotor. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0046] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] Figure 1 This is a three-dimensional structural schematic diagram of a bipolar mutually exclusive three-position disconnect switch provided in an embodiment of this application. Figure 2 This is a three-dimensional structural diagram of a bipolar mutually exclusive three-position disconnect switch provided in one embodiment of this application, from another direction. Figure 3 This is a three-dimensional structural diagram of an inlet assembly, a first outlet assembly, a second outlet assembly, and a drive assembly used in a bipolar mutually exclusive three-position disconnect switch, provided in an embodiment of this application, mounted on a mounting bracket. Figure 4 This is a three-dimensional structural diagram of an embodiment of a bipolar mutually exclusive three-position disconnect switch, showing the incoming line assembly, first outgoing line assembly, second outgoing line assembly, and drive assembly mounted on a mounting bracket from another direction. Figure 5 This is a front view schematic diagram of the incoming line assembly, first outgoing line assembly, second outgoing line assembly, and drive assembly used in a bipolar mutually exclusive three-position disconnect switch according to an embodiment of this application, mounted on a mounting bracket. Figure 6 This is a cross-sectional view of the transmission mechanism used in a bipolar mutually exclusive three-position disconnect switch according to an embodiment of this application. Figure 7 for Figure 1 A magnified view of a portion of point A in the middle. Figure 8 This is a three-dimensional structural diagram of a limit component used in a bipolar mutually exclusive three-position disconnect switch, provided as an embodiment of this application, mounted on a mounting bracket. Figure 9 This is a front view schematic diagram of the structure of a bipolar mutually exclusive three-position isolating switch provided in an embodiment of this application, in which the first signal switch and the second signal switch are mounted on a mounting bracket. Figure 10 This is a three-dimensional structural schematic diagram of an excitation device provided in an embodiment of this application.

[0050] An embodiment of the first aspect of this application provides a bipolar mutually exclusive three-position disconnect switch 100, such as... Figure 1 and Figure 2As shown, the device includes a mounting frame 150, an incoming line assembly 200, a first outgoing line assembly 250, a second outgoing line assembly 300, a disconnector assembly 400, a drive assembly 450, and an operating mechanism 500. The mounting frame 150 is the structure for mounting and supporting other components and forms the basic framework of the entire disconnector. The incoming line assembly 200, the first outgoing line assembly 250, and the second outgoing line assembly 300 are the parts that connect to other devices or equipment, connecting the entire disconnector to the circuit. The disconnector assembly 400 can change the circuit connection structure in the disconnector. The drive assembly 450 and the operating mechanism can realize the operation and drive of the disconnector assembly 400.

[0051] like Figure 1 As shown, the mounting bracket 150 includes two mounting plates, which are spaced apart to form an installation space in between.

[0052] like Figure 2 and Figure 3 As shown, the cable entry assembly 200 is mounted on the mounting bracket 150. The cable entry assembly 200 has a first cable entry position 210 and a second cable entry position 220. The first cable entry position 210 and the second cable entry position 220 are cable entry positions for connecting with other devices.

[0053] like Figure 2 and Figure 3 As shown, the first outgoing component 250 is mounted on the mounting bracket 150. The first outgoing component 250 has a first outgoing position 260 and a second outgoing position 270. The first outgoing position 260 and the second outgoing position 270 are connected. Here, "connected" means that the first outgoing position 260 and the second outgoing position 270 are connected by a conductor, and not that the first outgoing position 260 and the second outgoing position 270 are combined into one. The first outgoing position 260 and the second outgoing position 270 are still two independent positions.

[0054] like Figure 1 and Figure 4 As shown, the second outgoing component 300 is mounted on the mounting bracket 150. The second outgoing component 300 has a third outgoing position 310 and a fourth outgoing position 320. The third outgoing position 310 and the fourth outgoing position 320 are connected. Here, "connected" means that the third outgoing position 310 and the fourth outgoing position 320 are connected by a conductor, and not that the third outgoing position 310 and the fourth outgoing position 320 are combined into one. The third outgoing position 310 and the fourth outgoing position 320 are still two independent positions.

[0055] A first isolation position is provided between the first outgoing line position 260 and the third outgoing line position 310, meaning there is a first isolation space between them, and the first isolation position is located within that space. A second isolation position is provided between the second outgoing line position 270 and the fourth outgoing line position 320, meaning there is a second isolation space between them, and the second isolation position is located within that space.

[0056] like Figure 2 and Figure 5 As shown, the disconnector assembly 400 includes a first disconnector 410 and a second disconnector 420. The first disconnector 410 and the second disconnector 420 are the two poles of the disconnector, thus forming a bipolar system. The first end of the first disconnector 410 is rotatably connected to the first incoming line position 210, and the second end of the first disconnector 410 is used to connect to the first outgoing line position 260 or the third outgoing line position 310 or to be in the first isolation position. That is to say, the first disconnector 410 has three working positions: connected to the first outgoing line position 260, connected to the third outgoing line position 310, and in the first isolation position (that is, not connected to either the first outgoing line position 260 or the third outgoing line position 310).

[0057] When the first disconnect switch 410 is connected to the first outgoing position 260, a conductive loop is formed from the first incoming position 210 to the first disconnect switch 410 to the first outgoing position 260. When the first disconnect switch 410 is connected to the third outgoing position 310, a conductive loop is formed from the first incoming position 210 to the first disconnect switch 410 to the third outgoing position 310. When the first disconnect switch 410 is in the first isolation position, the first disconnect switch 410 disconnects the circuit.

[0058] Similarly, the first end of the second disconnect switch 420 is rotatably connected to the second inlet position 220, and the second end of the second disconnect switch 420 is used to connect to the second outlet position 270 or the fourth outlet position 320 or to be in the second isolation position. That is to say, the second disconnect switch 420 has three working positions: connected to the second outlet position 270, connected to the fourth outlet position 320, and in the second isolation position (that is, not connected to either the second outlet position 270 or the fourth outlet position 320).

[0059] When the second disconnect switch 420 is connected to the second outgoing position 270, a conductive loop is formed between the second incoming position 220, the second disconnect switch 420, and the second outgoing position 270. When the second disconnect switch 420 is connected to the fourth outgoing position 320, a conductive loop is formed between the second incoming position 220, the second disconnect switch 420, and the fourth outgoing position 320. When the second disconnect switch 420 is in the second isolation position, the second disconnect switch 420 disconnects the circuit.

[0060] like Figure 1 , Figure 2 and Figure 5As shown, the drive assembly 450 is connected to the knife switch assembly 400 and is used to drive the first knife switch 410 and the second knife switch 420 to rotate. When the first knife switch 410 is connected to the first outgoing position 260, the second knife switch 420 is connected to the fourth outgoing position 320. When the first knife switch 410 is connected to the third outgoing position 310, the second knife switch 420 is connected to the second outgoing position 270. When the first knife switch 410 is in the first isolation position, the second knife switch 420 is in the second isolation position. That is to say, the actions of the first knife switch 410 and the second knife switch 420 are opposite. It can be understood that when the first knife switch 410 rotates from the first outgoing position 260 to the third outgoing position 310, the second knife switch 420 rotates from the fourth outgoing position 320 to the second outgoing position 270, and vice versa. In this way, the actions of the first knife switch 410 and the second knife switch 420 are mutually exclusive and not synchronous.

[0061] like Figure 2 As shown, the operating mechanism 500 is connected to the drive assembly 450 and is used to operate the drive assembly 450, enabling the operator to operate the drive assembly 450 and the knife switch assembly 400.

[0062] The bipolar mutually exclusive three-position disconnect switch 100 can switch between two conductive circuits. The first conductive circuit is the first incoming position 210-first disconnector 410-first outgoing position 260, the second incoming position 220-second disconnector 420-fourth outgoing position 320. The second conductive circuit is the first incoming position 210-first disconnector 410-third outgoing position 310, the second incoming position 220-second disconnector 420-second outgoing position 270. Since the first outgoing position 260 and the second outgoing position 270 are connected, and the third outgoing position 310 and the fourth outgoing position 320 are connected, the current flowing through these two conductive circuits is in opposite directions. By switching between the two conductive circuits, the current reversal is achieved.

[0063] In use, the first output position 260 and the third output position 310 of the bipolar mutually exclusive three-position disconnect switch 100 are connected to the two poles of the rotor, and the first input position 210 and the second input position 220 are connected to the two poles of the excitation system. In this way, the polarity of the rotor can be reversed by switching the two conductive circuits.

[0064] Compared to existing technologies, this bipolar mutually exclusive three-position disconnect switch 100 can change the polarity of the rotor by operating the first disconnector 410 and the second disconnector 420 to change the connected conductive circuit. This polarity reversal is simple, easy to operate, reduces the difficulty of polarity reversal, and improves convenience.

[0065] It should be noted that the bipolar mutually exclusive three-position disconnect switch 100 can also be applied to other equipment or devices that require changing rotor polarity. The bipolar mutually exclusive three-position disconnect switch 100 can be reasonably connected in the circuit and is not limited to the application in the excitation system.

[0066] In some embodiments, such as Figure 3 As shown, the incoming line assembly 200 includes an incoming line insulator 230, a first incoming line plate 211, and a second incoming line plate 221. The incoming line insulator 230 is disposed on the mounting frame 150 and extends along the width direction of the mounting frame 150. The incoming line insulator 230 provides mounting support for the first incoming line plate 211 and the second incoming line plate 221. The first incoming line plate 211 and the second incoming line plate 221 are spaced apart along the length direction of the incoming line insulator 230. The first incoming line plate 211 forms a first incoming line position 210, and the second incoming line plate 221 forms a second incoming line position 220.

[0067] like Figure 3 As shown, the first outgoing line assembly 250 includes a first outgoing line insulator 280, a first outgoing line plate 261, and a second outgoing line plate 271. The first outgoing line insulator 280 is disposed on the mounting bracket 150 and extends along the width direction of the mounting bracket 150. The first outgoing line insulator 280 provides mounting support for the first outgoing line plate 261 and the second outgoing line plate 271. The first outgoing line plate 261 and the second outgoing line plate 271 are spaced apart on the first outgoing line insulator 280, and the first outgoing line plate 261 is flush with the first incoming line plate 211. The second outgoing line plate 271... 1. The first output plate 261 forms the first output position 260, and the second output plate 271 forms the second output position 270, flush with the second input plate 221. The lower ends of the first output plate 261 and the second output plate 271 are connected by the first conductor plate 290. The upper ends are independent and separate, facilitating connection with other cables (such as the first pole 720 cable of the rotor). Other cables can be directly connected to the first conductor plate 290, enabling simultaneous connection of other cables to the first output plate 261 and the second output plate 271. The first conductor plate 290 is generally a copper busbar made of copper.

[0068] like Figure 4As shown, the second outgoing line assembly 300 includes a second outgoing line insulator 330, a third outgoing line plate 311, and a fourth outgoing line plate 321. The second outgoing line insulator 330 is disposed on the mounting frame 150 and extends along the width direction of the mounting frame 150. The second outgoing line insulator 330 provides mounting support for the third outgoing line plate 311 and the fourth outgoing line plate 321. The second outgoing line insulator 330 and the first outgoing line insulator 280 are spaced apart along the length direction of the mounting frame 150. The third outgoing line plate 311 and the fourth outgoing line plate 321 are spaced apart on the second outgoing line insulator 330, and the third outgoing line plate 311... The first inlet plate 211 is flush with the second inlet plate 221, the fourth outlet plate 321 is flush with the second inlet plate 221, the third outlet plate 311 forms the third outlet position 310, and the fourth outlet plate 321 forms the fourth outlet position 320. The lower ends of the third outlet plate 311 and the fourth outlet plate 321 are connected by the second conductor plate 340, while their upper ends are independent and separate, facilitating connection with other cables (such as the second pole 730 cable of the rotor). Other cables can be directly connected to the second conductor plate 340, enabling simultaneous connection of other cables to the third outlet plate 311 and the fourth outlet plate 321. The second conductor plate 340 is generally a copper busbar made of copper.

[0069] like Figure 3 , Figure 4 and Figure 5 As shown, the first end of the first disconnect switch 410 is rotatably connected to the first inlet plate 211, and the first end of the second disconnect switch 420 is rotatably connected to the second inlet plate 221. The first disconnect switch 410 can realize the energization connection between the first inlet plate 211 and the first outlet plate 261 or the third outlet plate 311, and the second disconnect switch 420 can realize the energization connection between the second inlet plate 221 and the second outlet plate 271 or the fourth outlet plate 321.

[0070] It should be noted that contact bars can be installed on the aforementioned inlet board, outlet board, and disconnector. After the disconnector has been used for a long time, the contact bars may wear out. In this case, it is only necessary to replace the corresponding contact bars, without replacing the inlet board, outlet board, and disconnector body. This is existing technology known to those skilled in the art and will not be described in detail here.

[0071] The above structure forms the basic structure of the entire bipolar mutually exclusive three-position disconnect switch 100, which can realize the three-position switching of two mutually exclusive disconnect switches.

[0072] In some embodiments, such as Figure 3 , Figure 4 and Figure 5As shown, the drive assembly 450 includes a first spindle 451, a second spindle 452, a first crank arm 453, a second crank arm 454, a first connecting rod 455, and a second connecting rod 456. The first spindle 451 and the second spindle 452 form a rotating shaft, which can drive the first crank arm 453, the second crank arm 454, the first connecting rod 455, and the second connecting rod 456 to rotate.

[0073] The first main shaft 451 is rotatably connected to the mounting bracket 150 and extends along the width direction of the mounting bracket 150, that is, along the length direction of the incoming line insulator 230. The first main shaft 451 is provided with a first gear 457, and a first crank arm 453 is provided on the first main shaft 451. The first end of the first connecting rod 455 is rotatably connected to the first crank arm 453, and the second end of the first connecting rod 455 is rotatably connected to the first knife switch 410. When the first main shaft 451 rotates, the first connecting rod 455 can be driven to rotate through the first crank arm 453, thereby driving the first knife switch 410 to rotate, so that the first knife switch 410 can rotate to the first outgoing plate 261, the first isolation position, or the third outgoing plate 311.

[0074] The second main shaft 452 is rotatably connected to the mounting bracket 150 and extends along the width direction of the mounting bracket 150, that is, along the length direction of the incoming line insulator 230. The second main shaft 452 is provided with a second gear 458, which meshes with the first gear 457, so that the second main shaft 452 can rotate under the action of the first main shaft 451, and the rotation direction is opposite to the rotation direction of the first main shaft 451. The second crank arm 454 is provided on the second main shaft 452. The first end of the second connecting rod 456 is rotatably connected to the second crank arm 454, and the second end of the second connecting rod 456 is rotatably connected to the second disconnector 420. When the second main shaft 452 rotates, the second crank arm 454 can drive the second connecting rod 456 to rotate, thereby driving the second disconnector 420 to rotate, so that the second disconnector 420 can rotate to the second outgoing plate 271, the second isolation position, or the fourth outgoing plate 321. Since the first disconnect switch 410 and the second disconnect switch 420 are spaced apart along the width direction of the mounting bracket 150, there is also a certain gap between the first crank arm 453 and the second crank arm 454.

[0075] When the first main shaft 451 rotates, it can drive the second main shaft 452 to rotate in the opposite direction, and drive the first crank arm 453 and the second crank arm 454 to rotate in opposite directions, thereby driving the first knife switch 410 and the second knife switch 420 to rotate in opposite directions, thus realizing mutual exclusion action.

[0076] In some embodiments, such as Figure 2As shown, the operating mechanism 500 includes an operating box 510 and an operating lever 520. The operating box 510 houses a transmission mechanism 530. A first main shaft 451 extends into the operating box 510 and is connected to the transmission mechanism 530. The transmission mechanism 530 has an operating shaft 531 that extends out of the operating box 510. The operating lever 520 is detachably connected to the operating shaft 531. Thus, rotating the operating lever 520 allows the first main shaft 451 to rotate. The operating lever 520 is also detachable, similar to a crank, and can be stored away when not in use. The operating lever 520 may have knurled edges for ease of operation.

[0077] In some embodiments, such as Figure 6 As shown, the transmission mechanism 530 includes a first bevel gear 532, a second bevel gear 533, a lead screw 534, a lead screw nut 535, and a shift fork 536. The first bevel gear 532 is mounted on the operating shaft 531, the second bevel gear 533 is mounted on the lead screw 534 and meshes with the first bevel gear 532, the lead screw nut 535 is screwed onto the lead screw 534, the shift fork 536 is generally Y-shaped, the open end of the shift fork 536 is engaged with the lead screw nut 535, and the other end of the shift fork 536 (i.e. the tail of the Y-shape) forms a mounting cylinder 537, which is rotatably connected to the operating box 510. The first main shaft 451 is mounted inside the mounting cylinder 537 and can rotate with the mounting cylinder 537. In this way, when the operating shaft 531 rotates, the lead screw 534 can be driven to rotate through the meshing of the first bevel gear 532 and the second bevel gear 533. The lead screw 534 can drive the lead screw nut 535 to rise and fall. The lead screw nut 535 pushes the shift fork 536, causing the shift fork 536 to rotate, which in turn drives the first main shaft 451 to rotate, thus realizing the drive of the first main shaft 451.

[0078] It should be noted that since the shift fork 536 is driven by the nut 535, its rotation range is limited and it is not a complete circular rotation, but a reciprocating oscillation. This oscillation is consistent with the switching action of the first knife switch 410, which facilitates the switching of the first knife switch 410 between the first outgoing position 260, the first isolation position, and the third outgoing position 310.

[0079] In some embodiments, such as Figure 7 As shown, the first end of the first spindle 451 passes through the operation box 510, that is, the first end of the first spindle 451 protrudes from the operation box 510. The first end of the first spindle 451 is provided with a positioning arc plate 511, and the positioning arc plate 511 is provided with a positioning slot 5111. The positioning slot 5111 is set on the arc surface of the positioning arc plate 511, and the positioning arc plate 511 can rotate together with the first spindle 451.

[0080] A hook 512 is rotatably connected to the operation box 510. A torsion spring is provided between the hook 512 and the operation box 510, which can drive the hook 512 to rotate. The hook 512 abuts against the arc surface of the positioning arc plate 511. When the first main shaft 451 rotates, the positioning arc plate 511 rotates together, and the abutment position between the hook 512 and the positioning arc plate 511 changes continuously. When the first knife switch 410 is in the first isolation position, the hook part of the hook 512 is opposite to the positioning slot 5111 and is engaged in the positioning slot 5111 under the elastic force of the torsion spring, thereby realizing the engagement between the positioning arc plate 511 and the hook 512, positioning the first knife switch 410 in the first isolation position and preventing it from rotating on its own.

[0081] In some embodiments, such as Figure 7 As shown, the operation box 510 has an unlocking lever 513 near the hook 512. The bottom end of the hook 512 is connected to the unlocking lever 513. The unlocking lever 513 is connected to a spring 514, which extends along the length of the unlocking lever 513. When the unlocking lever 513 is compressed by an external force (e.g., when an operator presses the unlocking lever 513), the hook 512 can rotate under the action of the unlocking lever 513. The hook part of the hook 512 separates from the positioning slot 5111, thereby unlocking the first knife switch 410, allowing the first knife switch 410 to be switched to the first outlet plate 261 or the third outlet plate 311. When the external force disappears (e.g., when the operator stops pressing the unlocking lever 513), the spring 514 returns to its original position, and the hook 512 re-abuts against the arc surface of the positioning arc plate 511.

[0082] In some embodiments, such as Figure 8 As shown, the mounting bracket 150 is provided with a limiting component 550, which includes a limiting baffle 560 and a limiting sleeve 570. The limiting sleeve 570 is mounted on the first spindle 451. The limiting sleeve 570 is provided with a first limiting post 571 and a second limiting post 572. The first limiting post 571 and the second limiting post 572 can rotate together with the first spindle 451. A limit baffle 560 is installed on one side of the limit sleeve 570. When the first disconnect switch 410 is connected to the first outlet position 260, the first limit post 571 abuts against the limit baffle 560. When the first disconnect switch 410 is connected to the third outlet position 310, the second limit post 572 abuts against the limit baffle 560. This ensures accurate positioning of the first disconnect switch 410 when connected to the first outlet position 260 and when connected to the third outlet position 310, preventing further rotation of the first disconnect switch 410. The first limit post 571 and the second limit post 572 can be bolts, allowing for some adjustment and ease of use.

[0083] In some embodiments, such as Figure 8 and Figure 9As shown, the mounting bracket 150 is equipped with a first signal switch 600 and a second signal switch 610. The first signal switch 600 is equipped with a first signal light and a second signal light. The first main shaft 451 is connected to the first signal switch 600. The first main shaft 451 can be equipped with components such as crank arms and connecting rods to connect with the first signal switch 600. When the first disconnect switch 410 is connected to the first outgoing line position 260, the first signal switch 600 turns on the first signal light. When the first disconnect switch 410 is connected to the third outgoing line position 310, the first signal switch 600 turns on the second signal light, thus providing signal indication when the first disconnect switch 410 is connected to the first outgoing line position 260 and when it is connected to the third outgoing line position 310.

[0084] The second signal switch 610 is equipped with a third signal light. The second main shaft 452 is connected to the second signal switch 610. The second main shaft 452 can be equipped with components such as crank arms and connecting rods to connect with the second signal switch 610. When the first disconnect switch 410 is in the first isolation position, the second signal switch 610 turns on the third signal light to indicate that the first disconnect switch 410 is in the first isolation position.

[0085] The above structure enables signal indication of the three working positions of the first disconnector 410, which is easy to observe and intuitive.

[0086] An embodiment of the second aspect of this application provides an excitation device 700, such as... Figure 10 As shown, the device includes a device body 710 and a first aspect of a bipolar mutually exclusive three-position disconnect switch 100. The positive terminal 711 of the device body is connected to the first input terminal 210, the negative terminal 712 of the device body is connected to the second input terminal 220, the first output terminal 260 is connected to the first pole 720 of the rotor, and the third output terminal 310 is connected to the second pole 730 of the rotor.

[0087] In actual connection, the first pole 720 of the rotor can be connected to the first conductor plate 290 to achieve connection with the first outlet 260 and the second outlet 270, and the second pole 730 of the rotor can be connected to the second conductor plate 340 to achieve connection with the third outlet 310 and the fourth outlet 320.

[0088] When the first disconnect switch 410 is connected to the first output position 260, the second disconnect switch 420 is connected to the fourth output position 320. In this way, the current direction of the entire excitation device 700 is: positive pole 711 of the device body - first input position 210 - first disconnect switch 410 - first output position 260 - first pole 720 of the rotor (at this time, the first pole is positive) - second pole 730 of the rotor (at this time, the second pole is negative) - fourth output position 320 - second disconnect switch 420 - second input position 220 - negative pole 712 of the device body.

[0089] When the first disconnect switch 410 is connected to the third output position 310, the second disconnect switch 420 is connected to the second output position 270. In this way, the current direction of the entire excitation device 700 is: positive pole 711 of the device body - first input position 210 - first disconnect switch 410 - third output position 310 - second pole 730 of the rotor (at this time, the second pole is positive) - first pole 720 of the rotor (at this time, the first pole is negative) - second output position 270 - second disconnect switch 420 - second input position 220 - negative pole 712 of the device body.

[0090] Through the above two processes, the polarity of the rotor is reversed. The operator only needs to operate the bipolar mutually exclusive three-position disconnect switch 100 to change the connection position of the first knife switch 410 and the second knife switch 420, without performing any other complicated work.

[0091] Compared to existing technologies, the excitation device 700 includes a bipolar mutually exclusive three-position isolating switch 100, which can realize the polarity reversal of the rotor, is simple to operate, reduces the difficulty of polarity reversal, and improves convenience.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A bipolar mutually exclusive three-position disconnect switch, characterized in that, include: Mounting rack; The cable inlet assembly is provided with a first cable inlet position and a second cable inlet position; A first outgoing component, wherein the first outgoing component has a first outgoing position and a second outgoing position, and the first outgoing position is connected to the second outgoing position; The second outgoing component has a third outgoing position and a fourth outgoing position. The third outgoing position is connected to the fourth outgoing position. A first isolation position is provided between the first outgoing position and the third outgoing position. A second isolation position is provided between the second outgoing position and the fourth outgoing position. A disconnector assembly, comprising a first disconnector and a second disconnector, wherein a first end of the first disconnector is rotatably connected to the first incoming position, and a second end of the first disconnector is used to connect to the first outgoing position or the third outgoing position or to be in the first isolation position; a first end of the second disconnector is rotatably connected to the second incoming position, and a second end of the second disconnector is used to connect to the second outgoing position or the fourth outgoing position or to be in the second isolation position. A drive component is connected to the knife switch component and is used to drive the first knife switch and the second knife switch to rotate. When the first knife switch is connected to the first outgoing position, the second knife switch is connected to the fourth outgoing position. When the first knife switch is connected to the third outgoing position, the second knife switch is connected to the second outgoing position. When the first knife switch is in the first isolation position, the second knife switch is in the second isolation position. An operating mechanism, connected to the drive component, is used to operate the drive component; The drive assembly includes a first spindle, a second spindle, a first crank arm, a second crank arm, a first connecting rod, and a second connecting rod; The first main shaft is rotatably connected to the mounting bracket and extends along the width direction of the mounting bracket. The first main shaft is provided with a first gear. The first crank arm is disposed on the first main shaft. The first end of the first connecting rod is rotatably connected to the first crank arm. The second end of the first connecting rod is rotatably connected to the first knife switch. The second main shaft is rotatably connected to the mounting bracket and extends along the width direction of the mounting bracket. The second main shaft is provided with a second gear, which meshes with the first gear. The second crank arm is disposed on the second main shaft. The first end of the second connecting rod is rotatably connected to the second crank arm, and the second end of the second connecting rod is rotatably connected to the second knife switch. When the first main shaft rotates, it can drive the second main shaft to rotate, which in turn drives the first crank arm and the second crank arm to rotate in opposite directions, thereby driving the first knife gate and the second knife gate to rotate in opposite directions.

2. The bipolar mutually exclusive three-position disconnect switch according to claim 1, characterized in that, The incoming line assembly includes an incoming line insulator, a first incoming line plate, and a second incoming line plate. The incoming line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The first incoming line plate and the second incoming line plate are disposed at intervals on the incoming line insulator. The first incoming line plate forms the first incoming line position, and the second incoming line plate forms the second incoming line position. The first outgoing line assembly includes a first outgoing line insulator, a first outgoing line plate, and a second outgoing line plate. The first outgoing line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The first outgoing line plate and the second outgoing line plate are disposed at intervals on the first outgoing line insulator. The first outgoing line plate is flush with the first incoming line plate, and the second outgoing line plate is flush with the second incoming line plate. The first outgoing line plate forms the first outgoing line position, and the second outgoing line plate forms the second outgoing line position. The second outgoing line assembly includes a second outgoing line insulator, a third outgoing line plate, and a fourth outgoing line plate. The second outgoing line insulator is disposed on the mounting frame and extends along the width direction of the mounting frame. The second outgoing line insulator and the first outgoing line insulator are spaced apart along the length direction of the mounting frame. The third outgoing line plate and the fourth outgoing line plate are spaced apart on the second outgoing line insulator. The third outgoing line plate is flush with the first incoming line plate, and the fourth outgoing line plate is flush with the second incoming line plate. The third outgoing line plate forms the third outgoing line position, and the fourth outgoing line plate forms the fourth outgoing line position. The first end of the first disconnect switch is rotatably connected to the first incoming line plate, and the first end of the second disconnect switch is rotatably connected to the second incoming line plate.

3. The bipolar mutually exclusive three-position disconnect switch according to claim 1, characterized in that, The operating mechanism includes an operating box and an operating lever. The operating box is equipped with a transmission mechanism. The first main shaft extends into the operating box and is connected to the transmission mechanism. The transmission mechanism is equipped with an operating shaft that extends out of the operating box. The operating lever is detachably connected to the operating shaft.

4. The bipolar mutually exclusive three-position disconnecting switch according to claim 3, characterized in that, The transmission mechanism includes a first bevel gear, a second bevel gear, a lead screw, a lead screw nut, and a shift fork. The first bevel gear is disposed on the operating shaft, the second bevel gear is disposed on the lead screw and meshes with the first bevel gear, the lead screw nut is screwed onto the lead screw, the open end of the shift fork is engaged with the lead screw nut, and the other end of the shift fork forms a mounting cylinder and the mounting cylinder is rotatably connected to the operating box. The first spindle is installed inside the mounting cylinder; When the operating shaft rotates, the lead screw can drive the lead screw nut to rise and fall, thereby driving the shift fork to rotate, and in turn driving the first main shaft to rotate.

5. The bipolar mutually exclusive three-position disconnect switch according to claim 3, characterized in that, The first end of the first spindle passes through the operation box, and the first end of the first spindle is provided with a positioning arc plate, and the positioning arc plate is provided with a positioning slot. A hook is rotatably connected to the operation box, and a torsion spring is provided between the hook and the operation box. The hook abuts against the positioning arc plate. When the first knife switch is in the first isolation position, the hook part of the hook is engaged into the positioning slot under the elastic force of the torsion spring.

6. The bipolar mutually exclusive three-position disconnect switch according to claim 5, characterized in that, The operation box is provided with an unlocking rod near the hook. The bottom end of the hook is connected to the unlocking rod, and the unlocking rod is connected to a spring. When the unlocking rod is compressed by an external force, the hook part of the hook separates from the positioning slot. When the external force disappears, the spring returns to its original position.

7. The bipolar mutually exclusive three-position disconnect switch according to claim 1, characterized in that, The mounting bracket is equipped with a limiting component, which includes a limiting baffle and a limiting sleeve. The limiting sleeve is mounted on the first main shaft and is provided with a first limiting post and a second limiting post. When the first disconnector is connected to the first outgoing line position, the first limiting post abuts against the limiting baffle. When the first disconnector is connected to the third outgoing line position, the second limiting post abuts against the limiting baffle.

8. The bipolar mutually exclusive three-position disconnecting switch according to any one of claims 1-7, characterized in that, The mounting bracket is equipped with a first signal switch and a second signal switch. The first signal switch is equipped with a first signal light and a second signal light. The first main shaft is connected to the first signal switch. When the first knife switch is connected to the first outgoing position, the first signal switch turns on the first signal light. When the first knife switch is connected to the third outgoing position, the first signal switch turns on the second signal light. The second signal switch is equipped with a third signal light. The second main shaft is connected to the second signal switch. When the first knife switch is in the first isolation position, the second signal switch turns on the third signal light.

9. An excitation device, characterized in that, The device includes a device body and a bipolar mutually exclusive three-position isolating switch as described in any one of claims 1 to 8, wherein the positive terminal of the device body is connected to the first incoming position, the negative terminal of the device body is connected to the second incoming position, the first outgoing position is connected to the first pole of the rotor, and the third outgoing position is connected to the second pole of the rotor.

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