Double-column horizontal rotary outdoor three-phase high-voltage AC disconnector

Abstract

The application relates to a double-column horizontal rotary outdoor three-phase high-voltage AC isolating switch, and relates to the technical field of power transmission equipment. In order to solve the problem that oxidation reaction occurs in a contact and components near the contact, rust and other substances are generated, and the contact is not in good contact, the application comprises insulators, contacts and swing rods, the insulators are two, and the two insulators are symmetrically arranged; one swing rod is connected to each of the two insulators; one contact is connected to each of the two swing rods, the insulators can drive the swing rods to rotate when rotating, so that the two contacts are connected; a protection device is arranged on each of the two swing rods, the protection device comprises a protective cover and a first spring; the protective cover is installed at one end of the swing rod and is used for covering the contact; one end of the first spring is fixedly connected with a top wall of the swing rod, and the other end of the first spring is fixedly connected with the protective cover. The application has the effect of reducing corrosion and oxidation of the contact.

Description

Technical Field

[0001] This application relates to the field of power transmission equipment technology, and in particular to a double-column horizontal rotary outdoor three-phase high-voltage AC disconnect switch. Background Technology

[0002] High-voltage disconnect switches are crucial switching devices in the electrical systems of power plants and substations, and must be used in conjunction with high-voltage circuit breakers. They are used to connect, disconnect, or switch lines when high-voltage equipment is under voltage and load. High-voltage disconnect switches can be classified according to the number of insulating posts: ball-type, double-post, three-post, and V-type. They can also be classified according to their operating method: horizontal rotating, vertical rotating, swing, and plug-in type.

[0003] A typical double-column horizontal rotary outdoor three-phase high-voltage AC disconnector includes insulators, swing arms, and contacts. There are two insulators, which are symmetrically arranged and vertically installed on the horizontal ground. A swing arm is connected to the top surface of each insulator, and a contact is connected to one end of each swing arm.

[0004] When the insulating switch needs to be opened, the insulator is rotated, and the two levers follow the rotation of the insulator, causing the two contacts to disengage. This effectively disconnects the circuit.

[0005] Regarding the aforementioned patents, the contacts are constantly exposed to the air. When it rains, rainwater will come into direct contact with the contacts. Prolonged contact with rainwater will cause oxidation of the contacts and nearby components, producing substances such as rust, which will lead to poor contact. Summary of the Invention

[0006] To address the problem of oxidation reactions in the contacts and nearby components, resulting in rust and other substances that cause poor contact, this application provides a double-column horizontal rotary outdoor three-phase high-voltage AC disconnect switch.

[0007] This application provides a double-column horizontal rotary outdoor three-phase high-voltage AC disconnector, which adopts the following technical solution:

[0008] A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector includes insulators, contacts, and a swing arm. There are two insulators, which are symmetrically arranged.

[0009] A swing rod is connected to each of the two insulators;

[0010] Each of the two swing arms is connected to a contact, and when the insulator rotates, it can drive the swing arms to rotate so that the two contacts come into contact.

[0011] Both of the swing arms are equipped with protective devices, which include protective covers and a first spring;

[0012] The protective cover is installed at one end of the swing arm to cover the contact.

[0013] One end of the first spring is fixedly connected to the top wall of the swing arm, and the other end of the first spring is fixedly connected to the protective cover.

[0014] The contacts are constantly exposed to the air. When it rains, rainwater comes into direct contact with the contacts. Prolonged contact with rainwater can cause oxidation of the contacts and nearby components, producing rust and other substances, leading to poor contact. By adopting the above technical solution, a protective cover is fitted to one end of the swing arm connected to the contact. When it rains, the protective cover covers the contacts, thereby reducing direct contact between rainwater and the contacts. This reduces the risk of contact erosion by rainwater, oxidation, and the formation of oxides, which can lead to poor contact.

[0015] Preferably, the protective cover has a baffle plate on its side wall, a first sliding groove is provided on the side of the baffle plate, and a second sliding groove is provided on the bottom surface of the baffle plate, with the first sliding groove corresponding to the second sliding groove;

[0016] The shield is mounted on the side wall of the protective cover and slides on the side wall of the protective cover;

[0017] A driving component is installed on the top surface of the swing arm, and a moving device is provided between the driving component and the baffle plate. When the driving component is running, it can drive the baffle plate to move upward through the moving device.

[0018] When the baffle slides to the top of the protective cover, it can continue to move along the horizontal direction of the protective cover.

[0019] A reset device is provided between the baffle plate and the driving component, and the driving component can drive the baffle plate to move horizontally through the reset device when it is running.

[0020] Because the two contacts need to come into contact with each other, the ends of the protective cover that are close to each other need to be open. In windy weather, when the disconnecting switch is in the open state, rainwater may enter the protective cover through the opening and come into contact with the contacts, accelerating contact oxidation. By adopting the above technical solution, a baffle is installed at the opening of the protective cover. When the disconnecting switch is open, the baffle blocks the opening, thereby reducing the possibility of rainwater entering through the opening of the protective cover, thus reducing contact oxidation and reducing poor contact between the contacts.

[0021] Preferably, the moving device includes a worm gear, a turbine, a first rack, and a connecting rod;

[0022] The output end of the drive component is connected to the worm gear.

[0023] The worm gear is rotatably connected to the top surface of the rocker arm, and the turbine is vertically mounted on the rocker arm, meshing with the worm gear;

[0024] The bottom surface of the connecting rod is provided with a third sliding groove, and the top wall of the baffle plate is integrally formed with a first sliding ridge. The first sliding ridge is inserted into the third sliding groove and slides within the third sliding groove.

[0025] The connecting rod is connected to the first rack, and the first rack meshes with the turbine.

[0026] By adopting the above technical solution, during the closing process of the disconnecting switch, the swing arm rotates, the driving component operates, which in turn drives the worm gear to rotate, the worm gear to rotate, the worm gear to rotate, the worm gear to drive the first rack to move upward, which in turn drives the baffle plate to move upward, so that the two contacts contact each other and the disconnecting switch is closed.

[0027] Preferably, a mounting block is fixedly connected to the top surface of the protective cover, and a second spring is provided between the mounting block and the shield. One end of the second spring is connected to the shield, and the other end of the second spring is fixedly connected to the mounting block.

[0028] When the shielding plate moves to the point where the protective cover can slide into the second groove, it stops moving. When the swing arm drives the shielding plate to rotate, the two shielding plates come into contact with each other, thereby generating an interaction force, which causes the shielding plates to move away from each other. However, each time before the two protective covers close, the two shielding plates will come into contact with each other, which increases the resistance during rotation. By adopting the above technical solution, when the shielding plate moves to the point where the protective cover can slide into the second groove, the second spring contracts, causing the shielding plate to move along the length of the swing arm, thereby reducing the interaction between the two shielding plates before the two protective covers close, and thus reducing the resistance during rotation.

[0029] Preferably, the side of the shield is provided with a fourth sliding groove, and a slider is provided in the fourth sliding groove, and the second spring is connected to the slider.

[0030] The second spring is connected to the upper end of the baffle plate. During the process of the baffle plate rising, the second spring will undergo significant radial bending, which will reduce the service life of the second spring. By adopting the above technical solution, the second spring is connected to the slider. During the process of the baffle plate rising, the second spring restricts the movement of the slider, thereby allowing the slider to slide relative to the baffle plate, which reduces the radial bending of the second spring and increases its service life.

[0031] Preferably, a telescopic rod is provided between the shield and the mounting block, one end of the telescopic rod is fixedly connected to the mounting block, the other end of the telescopic rod is fixedly connected to the slider, and the second spring is sleeved on the telescopic rod.

[0032] During the sliding process, the second slider will generate friction with the inner wall of the fourth groove. The second spring is flexible and will undergo slight radial bending under the influence of friction. By adopting the above technical solution, a telescopic rod is set between the slider and the mounting block, and the second spring is sleeved on the telescopic rod. During the movement of the slider, the friction generated is transmitted to the telescopic rod, making the telescopic rod less prone to bending. Consequently, the second spring sleeved on the telescopic rod is also less prone to bending, further reducing the radial bending of the second spring and thus further increasing its service life.

[0033] Preferably, the reset device includes an incomplete gear and a second rack;

[0034] The incomplete gear is mounted on the top surface of the worm;

[0035] The height of the shield is greater than the height of the protective cover;

[0036] The second rack is fixedly connected to the protective cover of the shielding plate; the second rack meshes with the incomplete gear;

[0037] The first rack has a fifth sliding groove on its side, and one end of the connecting rod is inserted into the fifth sliding groove and slides within the fifth sliding groove.

[0038] By adopting the above technical solution, during the closing process of the disconnecting switch, the driving component drives the worm gear to rotate, which in turn drives the incomplete gear to rotate. The incomplete gear drives the second rack to move horizontally, which in turn drives the baffle plate to move towards the contact until the protective cover can slide into the first slide groove. During the horizontal movement of the baffle plate, the connecting rod slides from the lowest end of the fifth slide groove to the uppermost end of the fifth slide groove.

[0039] Preferably, a support column is provided between the second rack and the connecting rod, with one end of the support column fixedly connected to the second rack and the other end of the support column fixedly connected to the connecting rod.

[0040] The second rack is relatively long, but only one end is fixedly connected to the baffle plate, while the other end is suspended in the air. The connection between the second rack and the baffle plate is subjected to a large force, and it is prone to breakage during long-term use. By adopting the above technical solution, a support rod is set between the connecting rod and the second rack, which increases the stress points of the second rack and reduces the stress at the connection between the second rack and the baffle plate, thereby reducing the possibility of breakage at the connection between the second rack and the baffle plate.

[0041] Preferably, an elastic pad is provided between the protective cover and the shield, and the elastic pad is fixedly connected to the side wall of the protective cover.

[0042] Typically, protective covers are made of rigid materials. During the manufacturing process, pits and depressions can form at the openings of the two covers, creating gaps where they meet. Rainwater can easily seep into the covers through these gaps, causing contact between the contacts and the water, which in turn leads to corrosion and oxidation. The above-mentioned technical solution involves placing elastic pads at the openings of the protective covers. When the two covers meet, the two elastic pads adhere tightly to each other. Under the push of a first spring, the two elastic pads undergo elastic deformation, making the contact even tighter. This reduces the gaps at the joint, decreasing the possibility of rainwater entering the covers and thus reducing direct contact between the contacts and rainwater.

[0043] Preferably, both the protective cover and the shield are made of insulating material.

[0044] By adopting the above technical solution, the protective cover and shield are made of insulating material, which reduces the possibility of electricity from the contacts being transmitted to the outside through the protective cover or shield. When the disconnecting switch needs to be maintained, it reduces the possibility of workers touching the protective cover or shield and getting electric shock.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. A protective cover is fitted on one end of the swing arm connecting to the contact head. When it rains, the protective cover covers the contact head, thereby reducing the direct contact between rainwater and the contact head. This reduces the risk of the contact head being eroded by rainwater, leading to oxidation and the formation of oxides, which can cause poor contact.

[0047] 2. Install a baffle at the opening of the protective cover. When the disconnect switch is off, the baffle will block the opening, thereby reducing the possibility of rainwater entering from the opening of the protective cover, thus reducing oxidation of the contacts and reducing poor contact between the contacts.

[0048] 3. An elastic pad is installed at the opening of the protective cover. When the two protective covers come into contact with each other, the two elastic pads are pressed tightly together. Under the push of the first spring, the two elastic pads undergo elastic deformation, making the two elastic pads contact more tightly, thereby reducing the gap at the joint of the two protective covers, reducing the possibility of rainwater entering the protective cover through the gap, and thus reducing the direct contact between the contact and rainwater. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall structure of a double-column horizontal rotary outdoor three-phase high-voltage AC disconnect switch according to an embodiment of this application.

[0050] Figure 2 This is a structural diagram illustrating the positional relationship between the moving device and the reset device in an embodiment of this application.

[0051] Figure 3 This is a cross-sectional view of an embodiment of the present application used to illustrate the internal structure of the protective cover.

[0052] Figure 4 yes Figure 2 Enlarged view of part A in the middle.

[0053] Figure 5 yes Figure 2 Enlarged view of section B.

[0054] Explanation of reference numerals in the attached diagram: 1. Insulator;

[0055] 2. Contacts;

[0056] 3. Rocker arm; 31. Fixing block; 32. First spring; 33. Fixing bracket; 34. Connecting shaft;

[0057] 4. Protective cover; 41. Elastic pad; 42. Mounting block; 43. Second spring; 44. Telescopic rod;

[0058] 5. Baffle plate; 51. First slide groove; 52. Second slide groove; 53. Fourth slide groove; 54. Sliding block; 55. First sliding edge;

[0059] 6. Driving component; 61. First bevel gear; 62. Second bevel gear;

[0060] 7. Moving device; 71. Worm gear; 72. First rack; 721. Fifth slide groove; 73. Connecting rod; 731. Third slide groove; 732. Sixth slide groove; 74. Support column; 75. Turbine;

[0061] 8. Reset device; 81. Incomplete gear; 82. Second rack. Detailed Implementation

[0062] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0063] This application discloses a dual-column horizontal rotary outdoor three-phase high-voltage AC disconnect switch.

[0064] Reference Figure 1 and Figure 2 A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector includes insulators 1, contacts 2, and a swing rod 3. There are two insulators 1, which are symmetrically arranged and vertically fixed on a horizontal ground. A swing rod 3 is fixedly connected to the top surface of each insulator 1, and the end of the swing rod 3 away from the insulator 1 is welded to the contact 2.

[0065] Reference Figure 2 and Figure 3A protective cover 4 is fitted onto one end of the swing arm 3 that is welded to the contact 2. The protective cover 4 has an opening at the end away from the swing arm 3, and an elastic pad 41 is glued to the open side of the protective cover 4. The shape of the elastic pad 41 is adapted to the shape of the protective cover 4. A fixing block 31 is welded onto the swing arm 3 and is disposed inside the protective cover 4. A first spring 32 is disposed between the fixing block 31 and the protective cover 4. One end of the first spring 32 is welded to the fixing block 31, and the other end of the first spring 32 is welded to the protective cover 4.

[0066] Reference Figure 2 and Figure 3 A baffle plate 5 is provided at one end of the opening of the protective cover 4. The height of the baffle plate 5 is higher than that of the protective cover 4. A first sliding groove 51 is provided on the side of the baffle plate 5 closest to the protective cover 4, and a second sliding groove 52 is provided on the bottom surface of the baffle plate 5. The first sliding groove 51 and the second sliding groove 52 correspond to each other. The protective cover 4 is inserted into the first sliding groove 51 and slides within the first sliding groove 51. A fourth sliding groove 53 is provided on the inner wall of the first sliding groove 51. A slider 54 is provided in the fourth sliding groove 53 and slides within the fourth sliding groove 53. A mounting block 42 is welded to the top surface of the protective cover 4. A second spring 43 and a telescopic rod 44 are provided between the mounting block 42 and the slider 54. The second spring 43 is sleeved on the telescopic rod 44. One end of the telescopic rod 44 is welded to the mounting block 42, and the other end of the telescopic rod 44 is welded to the slider 54. One end of the second spring 43 is welded to the slider 54, and the other end of the second spring 43 is welded to the mounting block 42.

[0067] Reference Figure 2 The end of the swing arm 3 furthest from the contact 2 is bolted to a drive component 6, which is a drive motor. A moving device 7 and a resetting device 8 are provided between the drive component 6 and the baffle plate 5. The operation of the drive component 6 can cause the moving device 7 to slide the baffle plate 5 up and down, and cause the resetting device 8 to slide the baffle plate 5 horizontally.

[0068] When the disconnecting switch needs to be disconnected, the insulator 1 rotates, causing the two swing rods 3 to rotate in a direction away from each other. At the beginning of the rotation, the two protective covers 4 press against each other, which in turn causes the two protective covers 4 to move in a direction away from each other, thereby compressing the first spring 32. When the two swing rods 3 rotate until the two protective covers 4 are no longer in contact with each other, the first spring 32 returns to its original state, causing the protective covers 4 to reset.

[0069] During the rotation of the lever 3, the drive component 6 operates, and the reset device 8 drives the baffle plate 5 to move horizontally towards the contact 2. At this time, the second spring 43 is stretched, and the telescopic rod 44 extends. When the baffle plate 5 moves to the point where the protective cover 4 can slide into the first slide groove 51, the moving device 7 drives the protective cover 4 to move downward. During the downward sliding of the baffle plate 5, the slider 54 is fixed by the telescopic rod 44, causing the slider 54 to slide upward relative to the baffle plate 5. When the baffle plate 5 completely covers the opening of the protective cover 4, the isolation switch is opened.

[0070] When the disconnecting switch needs to be activated, insulator 1 rotates, causing the two swing rods 3 to rotate closer to each other. During the rotation of the swing rods 3, the driving component 6 causes the moving device 7 to move the shielding plate 5 upward. When the shielding plate 5 moves, the slider 54 is fixed by the telescopic rod 44, causing the slider 54 to slide downward relative to the shielding plate 5. When the protective cover 4 can slide into the second groove 52, the second spring 43 returns to its original state, causing the shielding plate 5 to move horizontally away from the contact 2. When the swing rod 3 rotates to the point where the two protective covers 4 are in contact with each other, the two protective covers 4 interact with each other, causing the two protective covers 4 to move away from each other, compressing the first spring 32. The swing rod 3 continues to rotate, causing the two contacts 2 to contact each other. At this time, the two protective covers 4 abut against each other, completely covering the two contacts 2, reducing the direct contact between rainwater and the contacts 2.

[0071] Reference Figure 2 and Figure 4 The moving device 7 includes a worm gear 71, a turbine 75, a first rack 72, and a connecting rod 73. The worm gear 71 is rotatably connected to the top surface of the rocker arm 3. A first bevel gear 61 is welded to the output end of the drive component 6, and a second bevel gear 62 is welded to the top of the worm gear 71. The first bevel gear 61 meshes with the second bevel gear 62. A fixing frame 33 is welded to the top surface of the rocker arm 3. The fixing frame 33 is rotatably connected to the turbine 75. A connecting shaft 34 is welded to the upper end of the turbine 75. The connecting shaft 34 passes through the second bevel gear 62 and is welded to the second bevel gear 62. The turbine 75 meshes with the worm gear 71. A third sliding groove 731 is formed on the bottom surface of the connecting rod 73. A first sliding rib 55 is integrally formed on the top wall of the baffle plate 5. The first sliding rib 55 is inserted into the third sliding groove 731 and slides within the third sliding groove 731. The first rack 72 is located at the end of the connecting rod 73 away from the baffle plate 5, and the first rack 72 meshes with the turbine 75. The side of the first rack 72 near the connecting rod 73 has a fifth groove 721. The end of the connecting rod 73 away from the baffle plate 5 is inserted into the fifth groove 721 and slides within the fifth groove 721.

[0072] During the disconnection process, the drive unit 6 operates, driving the first bevel gear 61 to rotate, which in turn drives the second bevel gear 62 to rotate, which in turn causes the worm gear 71 to rotate. The rotation of the worm gear 71 drives the turbine 75 to rotate, which in turn causes the first rack 72 to move downward. At this time, the connecting rod 73 is located at the bottom of the fifth slide groove 721. The first rack 72 moves downward, causing the connecting rod 73 to slide upward in the fifth slide groove 721. During the upward sliding of the connecting rod 73 in the fifth slide groove 721, the reset device 8 drives the baffle plate 5 to move towards the direction in which the two baffle plates 5 approach each other. When the baffle plate 5 moves to the position where the protective cover 4 can slide into the first slide groove 51, the connecting rod 73 slides to the top of the fifth slide groove 721 and abuts against the inner wall of the fifth slide groove 721.

[0073] The first rack 72 continues to move downwards, which in turn drives the shield 5 to move downwards until the shield 5 completely covers the opening of the protective cover 4, at which point the isolation switch is disconnected.

[0074] During the closing of the isolating switch, the drive unit 6 operates, driving the first bevel gear 61 to rotate, which in turn drives the second bevel gear 62 to rotate, which in turn drives the worm gear 71 to rotate. The rotation of the worm gear 71 drives the turbine gear 75 to rotate, which in turn drives the first rack 72 to move upward. At this time, the connecting rod 73 is at the uppermost end of the fifth slide groove 721. The upward movement of the first rack 72 causes the connecting rod 73 to slide downward within the fifth slide groove 721. When the connecting rod 73 slides to the bottom of the fifth slide groove 721, the first rack 72 moves upward, causing the baffle plate 5 to move upward.

[0075] Reference Figure 2 and Figure 5 The reset device 8 includes an incomplete gear 81 and a second rack 82. The incomplete gear 81 is welded to the upper end of the connecting shaft 34. The second rack 82 is welded to the side of the baffle plate 5 near the rocker arm 3. The end of the second rack 82 away from the baffle plate 5 meshes with the incomplete gear 81. A sixth sliding groove 732 is provided on the top surface of the connecting rod 73. A support column 74 is provided between the second rack 82 and the connecting rod 73. One end of the support column 74 is welded to the second rack 82, and the other end of the support column 74 is inserted into the sixth sliding groove 732 and slides within the sixth sliding groove 732.

[0076] During the disconnection process, the drive component 6 rotates, causing the first bevel gear 61 to rotate, which in turn drives the second bevel gear 62 to rotate, thereby causing the connecting shaft 34 to rotate. This, in turn, drives the incomplete gear 81 to rotate, which in turn drives the second rack 82 to move horizontally, thereby causing the baffle plate 5 to move away from the incomplete gear 81. During the movement of the second rack 82, the support column 74 is driven by the second rack, and thus the support column 74 slides within the sixth slide groove 732. When the baffle plate 5 moves to the point where the protective cover 4 can slide into the first slide groove 51, the incomplete gear 81 disengages from the second rack 82, completing the reset process of the baffle plate 5.

[0077] The implementation principle of a double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to an embodiment of this application is as follows: During the disconnection process, the insulator 1 rotates, causing the two swing rods 3 to rotate in a direction away from each other. At the beginning of the rotation, the two protective covers 4 press against each other, thereby causing the two protective covers 4 to move in a direction away from each other, thus compressing the first spring 32. When the two swing rods 3 rotate to the point where the two protective covers 4 are no longer in contact with each other, the first spring 32 returns to its original state, causing the protective covers 4 to reset.

[0078] During the rotation of the rocker arm 3, the drive component 6 operates, driving the first bevel gear 61 to rotate, which in turn drives the second bevel gear 62 to rotate. The second bevel gear 62 drives the connecting shaft 34 to rotate, and the connecting shaft 34 drives the worm gear 71 and the incomplete gear 81 to rotate. The rotation of the worm gear 71 drives the turbine 75 to rotate, which in turn drives the first rack 72 to move downward. At this time, the connecting rod 73 is located at the bottom of the fifth slide groove 721. The first rack 72 moves downward, causing the connecting rod 73 to slide within the fifth slide groove 721.

[0079] When the connecting rod 73 slides within the fifth slide groove 721, the incomplete gear 81 drives the second rack 82 to move horizontally, which in turn drives the baffle plate 5 to move away from the incomplete gear 81, thereby stretching the second spring 43 and extending the telescopic rod 44. When the baffle plate 5 moves to the point where the protective cover 4 can slide into the first slide groove 51, the incomplete gear 81 disengages from the second rack 82, and the connecting rod 73 slides to the top of the fifth slide groove 721. At this time, the first rack 72 continues to move downward, driving the baffle plate 5 downward. When the baffle plate 5 completely blocks the opening of the protective cover 4, the disconnection process of the isolating switch is completed.

[0080] During the closing of the isolating switch, the drive component 6 rotates, causing the first rack 72 to move upward. At this time, the connecting rod 73 is at the uppermost end of the fifth slide groove 721. The upward movement of the first rack 72 causes the connecting rod 73 to slide downward within the fifth slide groove 721. When the connecting rod 73 slides to the bottom of the fifth slide groove 721, the first rack 72 moves upward, causing the baffle plate 5 to move upward. When the baffle plate 5 moves to the point where the protective cover 4 can slide into the second slide groove 52, the second spring 43 contracts, causing the baffle plate 5 to move closer to the drive component 6. As the baffle plate 5 moves upward, it causes the second rack 82 to move upward. When the baffle plate 5 moves to the point where the protective cover 4 can slide into the second slide groove 52, the second rack 82 and the incomplete gear 81 are on the same horizontal plane, but the toothless end of the incomplete gear 81 faces the second rack 82.

[0081] After the shield 5 has moved, the two protective covers 4 come into contact with each other and compress the first spring 32, causing the two protective covers 4 to move away from each other. When the two contacts 2 come into contact with each other, the first spring 32 returns to its original state, thereby making the two protective covers 4 stick together tightly and completely cover the two contacts 2, reducing the direct contact between rainwater and the contacts 2.

[0082] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector, comprising: An insulator (1), a contact (2), and a swing rod (3), characterized in that: there are two insulators (1), and the two insulators (1) are arranged symmetrically; Each of the two insulators (1) is connected to a swing rod (3); Each of the two swing rods (3) is connected to a contact (2). When the insulator (1) rotates, it can drive the swing rods (3) to rotate so that the two contacts (2) are in contact. Both of the swing arms (3) are equipped with protective covers (4) and first springs (32); The protective cover (4) is installed at one end of the swing rod (3) to cover the contact (2). One end of the first spring (32) is fixedly connected to the top wall of the swing rod (3), and the other end of the first spring (32) is fixedly connected to the protective cover (4); The protective cover (4) has a baffle plate (5) on its side wall. The baffle plate (5) has a first groove (51) on its side and a second groove (52) on its bottom surface. The first groove (51) corresponds to the second groove (52). The shield (5) is installed on the side wall of the protective cover (4) and slides on the side wall of the protective cover (4); A driving component (6) is installed on the top surface of the swing arm (3), and a moving device (7) is provided between the driving component (6) and the baffle plate (5). When the driving component (6) is running, it can drive the baffle plate (5) to move upward through the moving device (7). When the shield (5) slides to the top of the protective cover (4), it can continue to move horizontally along the protective cover (4); A reset device (8) is provided between the shield (5) and the drive member (6). When the drive member (6) is running, it can drive the shield (5) to move horizontally through the reset device (8).

2. The double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 1, characterized in that: The moving device (7) includes a worm (71), a turbine (75), a first rack (72), and a connecting rod (73); The output end of the drive component (6) is connected to the worm gear (71) and can drive the worm gear (71) to rotate; The worm (71) is vertically mounted on the top surface of the rocker arm (3), and the turbine (75) is rotatably connected to the rocker arm (3). The turbine (75) meshes with the worm (71). The bottom surface of the connecting rod (73) is provided with a third sliding groove (731), and the top wall of the baffle plate (5) is integrally formed with a first sliding rib (55). The first sliding rib (55) is inserted into the third sliding groove (731) and slides within the third sliding groove (731). The connecting rod (73) is connected to the first rack (72), and the first rack (72) meshes with the turbine (75).

3. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 2, characterized in that: The protective cover (4) has a mounting block (42) fixedly connected to its top surface. A second spring (43) is provided between the mounting block (42) and the shield (5). One end of the second spring (43) is connected to the shield (5), and the other end of the second spring (43) is fixedly connected to the mounting block (42).

4. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 3, characterized in that: The shield (5) has a fourth groove (53) on its side, and a slider (54) is provided in the fourth groove (53). The second spring (43) is connected to the slider (54).

5. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 4, characterized in that: A telescopic rod (44) is provided between the shielding plate (5) and the mounting block (42). One end of the telescopic rod (44) is fixedly connected to the mounting block (42), and the other end of the telescopic rod (44) is fixedly connected to the slider (54). The second spring (43) is sleeved on the telescopic rod (44).

6. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 2, characterized in that: The reset device (8) includes an incomplete gear (81) and a second rack (82); The incomplete gear (81) is mounted on the top surface of the worm (71); The height of the shield (5) is greater than the height of the protective cover (4); The second rack (82) is fixedly connected to the protective cover (4) of the shield (5); the second rack (82) meshes with the incomplete gear (81); The first rack (72) has a fifth groove (721) on its side. One end of the connecting rod (73) is inserted into the fifth groove (721) and slides within the fifth groove (721).

7. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 6, characterized in that: A support column (74) is provided between the second rack (82) and the connecting rod (73). One end of the support column (74) is fixedly connected to the second rack (82), and the other end of the support column (74) is slidably connected to the connecting rod (73).

8. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 1, characterized in that: The protective cover (4) has an elastic pad (41) on its side wall, and the elastic pad (41) is fixedly connected to the side wall of the protective cover (4).

9. A double-column horizontal rotary outdoor three-phase high-voltage AC disconnector according to claim 1, characterized in that: Both the protective cover (4) and the shield (5) are made of insulating material.

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