High-voltage load isolation switch

Abstract

The invention discloses a high-voltage load isolation switch, and belongs to the field of isolation switches, and the high-voltage load isolation switch comprises an installation plate, a second insulation column is fixedly installed on the installation plate, a static contact plate is fixedly installed on the second insulation column, a moving assembly is arranged in the installation plate, and a collection assembly is arranged on the second insulation column. The moving assembly comprises a placement groove formed in the mounting plate, a sliding mechanism is arranged on the placement groove, a lap joint assembly is arranged on the placement groove, the collecting assembly comprises an insulating supporting frame fixedly mounted on a second insulating column, a protective cover is fixedly mounted on the insulating supporting frame, and the protective cover is fixedly mounted on the insulating supporting frame. An arc extinguishing box and a box body are fixedly installed in the protective cover. According to the scheme, through cooperation of the moving assembly, the movable contact plate, the two first conducting rods and the two second conducting rods, the effect of sequentially increasing the contact points with the static contact plate in the closing process of the equipment and the effect of sequentially decreasing the contact points with the static contact plate in the opening process of the equipment can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of isolating switches, and more particularly to a high-voltage load isolating switch. Background Art

[0002] In high-voltage power systems, in order to improve the safety and maintenance efficiency of power systems, high-voltage load isolation switches for disconnecting circuits have been specially developed. When regular maintenance and overhaul of power equipment is required, the high-voltage load isolation switches can safely isolate the live circuits and ensure the normal operation of the power system as a whole during the overhaul of power equipment.

[0003] However, during the closing and opening (i.e., the contact and separation of the moving and static contacts) of the existing isolating switches, especially during the opening process, since the current between the moving and static contacts cannot be interrupted immediately, an arc is easily generated in the gap between the two. Especially under high current conditions, when the current carried by the isolating switch is large, the duration and intensity of the arc generated when the moving and static contacts are separated will also increase relatively, increasing the risk of ablation of the contact surface of the moving and static contacts and damage to the equipment. Therefore, it is urgent to design a high-voltage load isolating switch to solve the above problems. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a high-voltage load isolating switch.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A high-voltage load isolating switch comprises a mounting plate, a second insulating column is fixedly mounted on the mounting plate, a static contact plate is fixedly mounted on the second insulating column, a moving component is arranged in the mounting plate, and a collecting component is arranged on the second insulating column;

[0007] The moving assembly comprises a placement groove provided on the mounting plate, a sliding mechanism is provided on the placement groove, a lap assembly is provided on the placement groove, the collecting assembly comprises an insulating support frame fixedly installed on the second insulating column, a protective cover is fixedly installed on the insulating support frame, an arc extinguishing box and a box body are fixedly installed in the protective cover, a push-pull mechanism is installed between the arc extinguishing box and the box body, and a conduit is fixedly connected to the arc extinguishing box and the box body;

[0008] An isolation component is arranged on the placement groove, and the isolation component comprises a limit frame fixedly mounted on the static touch plate, a trigger mechanism is installed between the limit frame and the placement groove, a motor is fixedly mounted on the top wall of the placement groove, and a pushing component is installed on the motor.

[0009] Furthermore, the sliding mechanism includes a sliding groove opened on the inner bottom wall of the mounting plate, and the sliding groove is connected to the placement groove, a sliding block is slidably installed on the sliding groove, a guide groove plate is fixedly installed on the sliding block, a servo motor is fixedly installed on the guide groove plate, a threaded rod is fixedly installed on the driving end of the servo motor, and one end of the threaded rod is rotatably connected to the guide groove plate, a sliding block is threadedly installed on the threaded rod, a support plate is fixedly installed on the sliding block, and a limiting component is commonly installed between the guide groove plate, the support plate and the placement groove.

[0010] Furthermore, the limiting component includes a fixed block fixedly installed on the guide groove plate, and there are two fixed blocks. A limiting rod 65 is fixedly installed between the two fixed blocks and the placement groove. A limiting groove is opened in the mounting plate, and there are two limiting grooves, and the two limiting grooves are connected with the placement groove, and the two ends of the support plate are respectively slidably installed on the corresponding limiting grooves, and a sliding groove connected with the placement groove is opened on the mounting plate, and a blocking plate is slidably installed on the sliding groove.

[0011] Furthermore, the overlap assembly includes a first insulating column fixedly mounted on the support plate, and the sealing plate is fixedly connected to the first insulating column, a moving touch plate is fixedly mounted on the first insulating column, a fixing groove 1 is provided on the moving touch plate, two fixing grooves 1 are provided, a spring telescopic rod 1 is fixedly mounted on the two fixing grooves 1, a conductive rod 1 is fixedly mounted on the two spring telescopic rods 1, a fixing groove 2 is provided on the moving touch plate, two fixing grooves 2 are provided, a spring telescopic rod 2 is fixedly mounted on the two fixing grooves 2, and a conductive rod 2 is fixedly mounted on the two spring telescopic rods 2.

[0012] Furthermore, the push-pull mechanism includes an insulating plate fixedly mounted on the moving touch plate, a guide rod fixedly mounted on the insulating plate, a rack fixedly mounted on the insulating plate, a rotating rod rotatably mounted on the inner wall of the protective cover, a rotating gear meshing with the rack fixedly mounted on the rotating rod, a toothed rod slidably mounted through the box body, and the toothed rod meshes with the rotating gear, sealing plates are fixedly mounted on the guide rod and the toothed rod, and one side of the sealing plate is sealingly slidably mounted in the arc extinguishing box, and the other side of the sealing plate is sealingly slidably mounted in the box body, and a heat dissipation component is jointly installed between the arc extinguishing box and the box body.

[0013] Furthermore, the heat dissipation component includes heat conducting plates respectively fixedly mounted on the arc extinguishing box and the side wall of the box body, and fins uniformly distributed in a linear shape are fixedly mounted on both of the heat conducting plates.

[0014] Furthermore, the trigger mechanism includes a heat expansion gasket fixedly installed in the limit frame, a fixing frame fixedly installed in the placement groove, a balance plate rotatably installed on the fixing frame, a groove body is opened on the balance plate, a roller body is slidably installed on the groove body, a push rod is fixedly installed on the roller body, a fixing rod is fixedly installed on the inner wall of the placement groove, a pressing rod is slidably installed on the fixing rod, and a button is fixedly installed on the top wall of the placement groove.

[0015] Furthermore, the pushing component includes a rotating shaft fixedly mounted on the driving end of the motor, and an eccentric wheel is fixedly mounted on the rotating shaft.

[0016] Furthermore, a cleaning assembly is provided in the protective cover, and the cleaning assembly includes a round rod fixedly mounted on the insulating plate, two round rods are provided, and a push plate is fixedly mounted on the two round rods, guide grooves are provided on the arc extinguishing box and the box body, balls are slidably mounted on the two guide grooves, a support shaft is fixedly mounted between the two balls, a cleaning roller is fixedly mounted on the support shaft, a cleaning plate one is rotatably mounted on the support shaft, two cleaning plates are provided, a connecting frame is rotatably mounted on the support shaft, and a cleaning component is mounted on the connecting frame.

[0017] Furthermore, the cleaning component includes a return spring fixedly mounted on the connecting frame, two return springs are provided, a cleaning plate 2 is fixedly mounted on the two return springs, and an insulating block is fixedly mounted on the moving touch plate, and two insulating blocks are provided.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This solution can realize the effect of increasing the contact points with the static touch plate in sequence during the closing process of the equipment and decreasing the contact points with the static touch plate in sequence during the opening process of the equipment by coordinating the moving component with the moving touch plate, two conductive rods one and two conductive rods two. This can effectively reduce the arc caused by excessive instantaneous current at the contact point at the initial stage of closing, and the strong arc caused by sudden current interruption during the opening process of the equipment. It can effectively improve the safety of the equipment during the opening and closing process, as well as the service life of the moving touch plate and the static touch plate.

[0020] (2) In the present invention, when an arc is generated during the opening and closing process of the equipment, the generated arc can be collected by the cooperation of the insulating plate and the push-pull mechanism, and the collected arc can be cooled and eliminated by the cooperation of the two heat conducting plates and the corresponding multiple fins, thereby effectively reducing the duration of the arc between the moving contact plate and the stationary contact plate and reducing the damage to the moving contact plate and the stationary contact plate caused by the arc.

[0021] (3) In the present solution, when the temperature of the contact surface between the static touch plate and the moving touch plate continues to rise during the closing process of the equipment, the cooperation between the trigger mechanism and the push component can realize the rapid separation of the moving touch plate and the static touch plate, thereby effectively reducing the occurrence of arcs and ablation caused by the continuous increase in the contact surface temperature between the moving touch plate and the static touch plate, and effectively improving the safety of the equipment during the closing process.

[0022] (4) During the opening and closing process of the equipment, this solution can clean dust and other impurities adhering to the surface of the static touch plate through the push-pull mechanism, and at the same time, the moving touch plate and the ends of the first and second conductive rods can be cleaned through the cleaning component, thereby effectively improving the contact between the moving touch plate and the static touch plate, and effectively reducing the generation of arcs during the opening and closing process of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 A cross-sectional schematic diagram of the middle moving touch panel after it is rotated to a certain angle;

[0025] Figure 3 for Figure 1 A schematic cross-sectional view of the middle mounting plate;

[0026] Figure 4 for Figure 3 Schematic diagram of the structure of the mobile component;

[0027] Figure 5 for Figure 4 A schematic diagram of the connection structure between the first insulating column, the threaded rod and the support plate;

[0028] Figure 6 for Figure 1 A schematic diagram of the structure of the collection component;

[0029] Figure 7 for Figure 6 Schematic diagram of the structure after removing the protective cover and rotating it to a certain angle;

[0030] Figure 8 for Figure 7 Schematic cross-sectional view of the arc extinguishing box and the box body;

[0031] Fig. 9 for Figure 1 A schematic diagram of the structure of the static touch panel and its components;

[0032] Fig.10 for Figure 3 Schematic diagram of the structure of the isolation component;

[0033] Fig.11for Figure 6 A schematic diagram of the structure of the cleaning components in the middle protective cover;

[0034] Fig.12 for Fig.11 A schematic diagram of the structure after the middle moving touch panel and the cleaning component are rotated to a certain angle;

[0035] Fig.13 for Fig.12 Schematic diagram of the structure of the cleaning components.

[0036] Description of the numbers in the figure:

[0037] 1. Mounting plate; 2. First insulating column;

[0038] 3. Lap assembly; 31. Moving touch plate; 32. Spring telescopic rod 1; 33. Conductive rod 1; 34. Spring telescopic rod 2; 35. Conductive rod 2;

[0039] 4. Second insulating column; 5. Static contact plate;

[0040] 6. Moving assembly; 61. Placement slot; 62. Slide slot; 63. Sliding block; 64. Guide plate; 65. Limit rod; 66. Sliding slot; 67. Blocking plate; 68. Limit slot; 69. Servo motor; 610. Threaded rod; 611. Sliding block; 612. Support plate;

[0041] 7. Collecting assembly; 71. Insulating support frame; 72. Protective cover; 73. Insulating plate; 74. Arc extinguishing box; 75. Box body; 76. Heat conducting plate; 77. Fin; 78. Guide rod; 79. Rack; 710. Rotating gear; 711. Toothed rod; 712. Sealing plate; 713. Conduit;

[0042] 8. Isolation assembly; 81. Limiting frame; 82. Thermal expansion gasket; 83. Push rod; 84. Roller body; 85. Fixed frame; 86. Balance plate; 87. Press rod; 88. Button; 89. Motor; 810. Rotating shaft; 811. Eccentric wheel;

[0043] 9. Cleaning assembly; 91. Guide groove; 92. Round rod; 93. Push plate; 94. Ball; 95. Support shaft; 96. Cleaning roller; 97. Cleaning plate one; 98. Connecting frame; 99. Reset spring; 910. Cleaning plate two; 911. Insulating block. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0045] See also Figures 1 to 13 A high-voltage load isolating switch comprises a mounting plate 1, a second insulating column 4 is fixedly mounted on the mounting plate 1, a static contact plate 5 is fixedly mounted on the second insulating column 4, a moving component 6 is arranged in the mounting plate 1, and a collecting component 7 is arranged on the second insulating column 4;

[0046] The moving assembly 6 includes a placement groove 61 provided on the mounting plate 1, a sliding mechanism is provided on the placement groove 61, a lap assembly 3 is provided on the placement groove 61, and the collecting assembly 7 includes an insulating support frame 71 fixedly installed on the second insulating column 4, a protective cover 72 is fixedly installed on the insulating support frame 71, an arc extinguishing box 74 and a box body 75 are fixedly installed in the protective cover 72, a push-pull mechanism is installed between the arc extinguishing box 74 and the box body 75, and a conduit 713 is fixedly connected to the arc extinguishing box 74 and the box body 75;

[0047] An isolation component 8 is provided on the placement groove 61, and the isolation component 8 includes a limit frame 81 fixedly mounted on the static touch plate 5, a trigger mechanism is installed between the limit frame 81 and the placement groove 61, a motor 89 is fixedly mounted on the top wall of the placement groove 61, and a pushing component is installed on the motor 89.

[0048] like Figure 1 - Figure 5 , Fig. 9 As shown, the sliding mechanism includes a slide groove 62 opened on the inner bottom wall of the mounting plate 1, and the slide groove 62 is connected to the placement groove 61, a sliding block 63 is slidably installed on the slide groove 62, a guide groove plate 64 is fixedly installed on the sliding block 63, a servo motor 69 is fixedly installed on the guide groove plate 64, a threaded rod 610 is fixedly installed on the driving end of the servo motor 69, and one end of the threaded rod 610 is rotatably connected to the guide groove plate 64, a slider 611 is threadedly installed on the threaded rod 610, a support plate 612 is fixedly installed on the slider 611, and a limiting component is installed between the guide groove plate 64, the support plate 612 and the placement groove 61.

[0049] The limiting component includes a fixed block fixedly installed on the guide groove plate 64, and there are two fixed blocks. A limiting rod 65 is fixedly installed between the two fixed blocks and the placement groove 61. A limiting groove 68 is opened in the mounting plate 1. There are two limiting grooves 68, and the two limiting grooves 68 are connected with the placement groove 61, and the two ends of the support plate 612 are respectively slidably installed on the corresponding limiting grooves 68. A sliding groove 66 connected with the placement groove 61 is opened on the mounting plate 1, and a blocking plate 67 is slidably installed on the sliding groove 66.

[0050] The lap joint assembly 3 includes a first insulating column 2 fixedly mounted on a support plate 612, and a sealing plate 67 is fixedly connected to the first insulating column 2, a moving touch plate 31 is fixedly mounted on the first insulating column 2, a fixing groove 1 is provided on the moving touch plate 31, two fixing grooves 1 are provided on the moving touch plate 31, a spring telescopic rod 1 32 is fixedly mounted on the two fixing grooves 1, a conductive rod 1 33 is fixedly mounted on the two spring telescopic rods 1 32, a fixing groove 2 is provided on the moving touch plate 31, two fixing grooves 2 are provided on the two fixing grooves 2, a spring telescopic rod 2 34 is fixedly mounted on the two fixing grooves 2, and a conductive rod 2 35 is fixedly mounted on the two spring telescopic rods 2 34.

[0051] When the device needs to be closed, the servo motor 69 is started. At this time, the operation of the servo motor 69 will cooperate with the threaded rod 610, the slider 611 and the support plate 612, so that the first insulating column 2 drives the moving touch plate 31 and the two conductive rods 1 33 and the two conductive rods 2 35 to approach the side of the static touch plate 5, and the combination Figure 2 and Fig. 9 It can be seen that, through the design of the notch in the middle of the contact surface of the stationary touch plate 5 and the design of the raised portion in the middle of the contact surface of the moving touch plate 31, when the front and rear sides of the moving touch plate 31 (such as Figure 2 When the two conductive rods 33 and the two conductive rods 35 contact the contact surface of the static touch plate 5 in the direction shown in the figure, the two conductive rods 1 33 and the two conductive rods 2 35 are still not in contact with the contact surface of the static touch plate 5.

[0052] At this time, the two conductive rods 33 can be firstly attached to the contact surface of the static touch plate 5 by the continuous movement of the movable touch plate 31 (from Figure 2It can be seen that the left ends of the two conductive rods 1 33 are longer than the left ends of the corresponding conductive rods 2 35). When the left ends of the conductive rods 1 33 are in contact with the static touch plate 5 and the movable touch plate 31 still drives the upper components to move, the movable touch plate 31 will compress the spring telescopic rod 1 32 between the two conductive rods 1 33. Similarly, when the left ends of the two conductive rods 2 35 are in contact with the static touch plate 5 and the movable touch plate 31 continues to move, the two spring telescopic rods 2 34 will be compressed until the left end of the movable touch plate 31 is in contact with the static touch plate 5. In this process, the effect of increasing the contact points in sequence can be achieved, and the current can be gradually introduced into the circuit to improve the stability of the current access process. At the same time, it helps to reduce the system instability caused by the sudden increase in load during the equipment closing process, and can effectively reduce the strong arc caused by the impact of instantaneous current.

[0053] The moving touch plate 31 is set as the main contact, and the two conductive rods 1 33 and the two conductive rods 2 35 are auxiliary contacts. That is, during the closing process of the equipment, after the moving touch plate 31 is completely in contact with the static touch plate 5, the moving touch plate 31 is the main current path, and the two conductive rods 1 33 and the two conductive rods 2 35 cooperate to share part of the current, so as to reduce the load borne by a single contact, that is, the moving touch plate 31, which helps to achieve more stable current transmission.

[0054] In addition, when the left ends of the two conductive rods 1 33 and the two conductive rods 2 35 are both in contact with the contact surface of the static touch plate 5 (such as Figure 2 In the process of gradually pressurizing the corresponding conductive rod 1 33 and the two conductive rods 2 35 through the two spring telescopic rods 1 32 and the two spring telescopic rods 2 34, the dynamic touch plate 31 can gradually reduce the impact of the current on the conductive rod 1 33 and the two conductive rods 2 35, and reduce the wear and damage of the contact surface between the conductive rod 1 33 and the two conductive rods 2 35 and the static touch plate 5.

[0055] When the equipment needs to be opened, the servo motor 69 is started again. At this time, the operation of the servo motor 69 will cause the moving contact plate 31 to gradually move away from the static contact plate 5. During this process, the two conductive rods 2 35 will first separate from the static contact plate 5, followed by the two conductive rods 1 33, and finally the moving contact plate 31 as the main contact. In this way, the effect of gradually reducing the contact points can be achieved. By reducing the contact points in sequence, the effect of gradually disconnecting the current can be achieved, thereby effectively reducing the current intensity borne by each contact point, which is helpful for the generation of arcs during the opening process, or the duration and intensity of the arcs generated.

[0056] In addition, by separating the two conductive rods 1 33 and the two conductive rods 2 35 as auxiliary contacts from the static contact plate 5 first, the current when the main contacts, i.e., the moving contact plate 31 and the static contact plate 5 are separated, and the intensity of the arc generated can be effectively reduced, thereby further improving the safety of the equipment during the opening process.

[0057] The purpose of setting the two limit grooves 68 is that when the servo motor 69 drives the first insulating column 2 and the moving touch plate 31 to move, the two limit grooves 68 cooperate with the support plate 612 to effectively improve the stability of the movement of the moving touch plate 31. At the same time, the purpose of installing the blocking plate 67 on the first insulating column 2 is to achieve the blocking of the upper end of the placement groove 61 through the blocking plate 67 (such as Figure 3 The direction shown in the figure) reduces the risk of external rainwater or impurities entering the interior of the mounting plate 1 and causing corrosion damage to the components placed in the mounting plate 1.

[0058] like Figure 1 , Figure 2 , Figure 6 - Figure 8 As shown, the push-pull mechanism includes an insulating plate 73 fixedly mounted on the moving contact plate 31, a guide rod 78 fixedly mounted on the insulating plate 73, a rack 79 fixedly mounted on the insulating plate 73, a rotating rod rotatably mounted on the inner wall of the protective cover 72, a rotating gear 710 meshing with the rack 79 fixedly mounted on the rotating rod, a toothed rod 711 slidably mounted through the box body 75, and the toothed rod 711 meshes with the rotating gear 710, a sealing plate 712 is fixedly mounted on the guide rod 78 and the toothed rod 711, and one side of the sealing plate 712 is sealingly slidably mounted in the arc extinguishing box 74, and the other side of the sealing plate 712 is sealingly slidably mounted in the box body 75, and a heat dissipation component is installed between the arc extinguishing box 74 and the box body 75.

[0059] The heat dissipation component includes heat conducting plates 76 respectively fixedly mounted on the arc extinguishing box 74 and the side wall of the box body 75 , and fins 77 uniformly distributed in a linear shape are fixedly mounted on both heat conducting plates 76 .

[0060] When the device is closed, that is, the moving contact plate 31 gradually approaches the stationary contact plate 5, the moving contact plate 31 will drive the insulating plate 73 thereon to move together. During the displacement process, the insulating plate 73 can push the sealing plate 712 located inside the arc extinguishing box 74 to move to the left rear side (such as Figure 7 In the process, the sealing plate 712 can eject the internal gas of the arc extinguishing box 74 through the corresponding conduit 713, and blow off the dust and other impurities on the contact surface of the stationary contact plate 5, thereby effectively improving the cleanliness of the contact surface of the stationary contact plate 5.

[0061] At the same time, when the insulating plate 73 drives the rack 79 to move to the left rear side (such as Figure 7 The toothed rod 711 drives the corresponding sealing plate 712 to move to the right front side (as shown in the direction shown in the figure), through the cooperation with the rotating gear 710 and the rotating rod, the toothed rod 711 can drive the corresponding sealing plate 712 to move to the right front side (as shown in the figure Figure 7In the direction shown), during this process, the box 75 can absorb dust and other impurities on the contact surface of the static touch plate 5 through the corresponding conduit 713, so as to achieve further cleaning of the static touch plate 5, and can effectively reduce the generation of arcs when the static touch plate 5 contacts the moving touch plate 31 later (dust and other impurities on the contact surfaces of the static touch plate 5 and the moving touch plate 31, the two conductive rods 1 33, and the two conductive rods 2 35 will not only increase the resistance when they are in contact, but also easily reduce the fit when they are in contact, affecting the stable transmission of current. In addition, it is easy to cause the surface temperature of the several parts to continue to rise after contact, and finally cause electric corrosion and the generation of strong arcs).

[0062] If an arc is generated when the device is opened, that is, when the moving contact plate 31 drives the insulating plate 73 away from the static contact plate 5, the arc between the moving contact plate 31 and the static contact plate 5 can be sucked into the arc extinguishing box 74 through the cooperation of the guide rod 78 and the corresponding sealing plate 712, so as to collect the arc (the arc is a high-temperature, high-pressure current discharge phenomenon, and its medium is usually gas), reduce the duration of the arc between the moving contact plate 31 and the static contact plate 5, and reduce the damage of the arc to both. In addition, the cooperation of the heat conducting plate 76 and the multiple fins 77 provided on the arc extinguishing box 74 can effectively accelerate the cooling and extinguishing speed of the arc collected inside the arc extinguishing box 74 (in the process of closing the switch, the current will flow between the established contact surfaces, and it is not easy to form an arc. In the process of opening the device, since the gap through which the current passes gradually increases during the separation of the moving contact plate 31 and the static contact plate 5, it is easy to generate an arc, especially under high load and high voltage.

[0063] At the same time, during the opening process, through the cooperation of the insulating plate 73 with the rack 79, the toothed rod 711 and the corresponding sealing plate 712, the box body 75 can blow out gas, and the arc generated between the moving contact plate 31 and the static contact plate 5 can be blown to the side of the arc extinguishing box 74 (at the same time, the blown gas can cool the arc to a certain extent and accelerate the cooling speed of the arc), thereby accelerating the speed of the arc entering the arc extinguishing box 74.

[0064] The inner walls of the arc extinguishing box 74 and the box body 75, as well as the two sealing plates 712 are all made of insulating materials. When the arc enters the arc extinguishing box 74 or the box body 75 (during the equipment closing process, if an arc is generated, the suction force generated by the cooperation of the toothed rod 711 and the corresponding sealing plate 712 can suck the arc into the box body 75 for cooling and extinguishing), the insulating material has good insulating properties, which can effectively reduce the arc entering the arc extinguishing box 74 or the box body 75 and contacting external electrical equipment, thereby ensuring the safety of the arc during the extinguishing process inside the arc extinguishing box 74 or the box body 75.

[0065] Filters are fixedly installed on the two ducts 713. When the two ducts 713 are forced to inhale air, impurities in the inhaled gas can be filtered through the corresponding filters, thereby effectively ensuring the cleanliness of the gas entering the arc extinguishing box 74 and the box body 75, that is, the cleanliness of the gas sprayed from the arc extinguishing box 74 and the box body 75 to the static contact plate 5 through the corresponding ducts 713.

[0066] The box 75 is provided with a limited displacement slot (from Figure 7 As can be seen in the figure, a displacement block is slidably installed on the displacement limit groove, and the displacement block is fixedly connected to the rack 79. When the rack 79 is displaced by force, the cooperation between the displacement limit groove and the displacement block can effectively improve the stability of the rack 79 during movement, that is, ensure the cooperation effect between the rack 79, the rotating gear 710, and the toothed rod 711.

[0067] like Figure 1 , Fig. 9 - Fig.10 As shown, the trigger mechanism includes a heat expansion gasket 82 fixedly installed in the limit frame 81, a fixing frame 85 is fixedly installed in the placement groove 61, a balance plate 86 is rotatably installed on the fixing frame 85, and a groove body (drawn but not marked in the figure, from Fig.10 As can be seen in the figure, a roller body 84 is slidably mounted on the groove body, a push rod 83 is fixedly mounted on the roller body 84, a fixing rod is fixedly mounted on the inner wall of the placement groove 61, a pressing rod 87 is slidably mounted on the fixing rod, and a button 88 is fixedly mounted on the inner top wall of the placement groove 61.

[0068] The pushing component includes a rotating shaft 810 fixedly mounted on the driving end of the motor 89 , and an eccentric wheel 811 is fixedly mounted on the rotating shaft 810 .

[0069] In the initial state, the roller body 84 is located in the middle of the balance plate 86. At this time, the balance plate 86 is in a horizontal state, and the lower end of the balance plate 86 is in contact with the upper surface of the eccentric wheel 811 (such as Fig.10 The lower end of the pressing rod 87 is in contact with the upper surface of the balance plate 86, and the pressing rod 87 is under the movement limit of the fixed rod. At this time, the lower end of the pressing rod 87 is the lowest point of the movable position (as shown in FIG. Fig.10 Meanwhile, the pressing rod 87 is light in weight and will not affect the balance of the balance board 86.

[0070] During the process of the static touch plate 5 being in continuous contact with the dynamic touch plate 31, the two conductive rods 1 33, and the two conductive rods 2 35, if the surface temperature of the several surfaces continues to rise (when the static touch plate 5 is incompletely in contact with the dynamic touch plate 31, or an oxide layer exists on the contact surface, the contact pressure is insufficient, and the heat dissipation effect around the contact surface is poor, the surface temperature of the static touch plate 5 and the dynamic touch plate 31 will continue to rise during the contact process), the thermal expansion gasket 82 will expand due to the heat, and the movement limit of the position frame 81 will limit the thermal expansion gasket 82. At this time, the thermal expansion gasket 82 will expand to the left, pushing the push rod 83 and the roller body 84 to move to the left (such as Fig.10 direction shown);

[0071] As the roller 84 continues to move to the left, the pressure exerted by the roller 84 on the left side of the balance plate 86 will gradually increase. Therefore, under the action of gravity, the balance plate 86 will gradually rotate counterclockwise around the fixing frame 85 (eg, Fig.10 In the direction shown, and in this process, the movement of the roller body 84 is limited by the groove body. When the balance plate 86 is forced to rotate counterclockwise, the roller body 84 will drive the push rod 83 to move downward), and when the balance plate 86 is forced to rotate counterclockwise, its right end will apply an upward thrust to the pressing rod 87, causing the pressing rod 87 to move upward until the upper end of the pressing rod 87 presses the button 88, thereby starting the motor 89.

[0072] The operation of the motor 89 drives the eccentric wheel 811 to rotate rapidly to 180 degrees through the rotating shaft 810. During the rotation of the eccentric wheel 811, the thrust generated on the guide plate 64 can cause the guide plate 64 to drive the first insulating column 2 and the moving contact plate 31 to move rapidly to the right (such as Fig.10 In the direction shown, the moving touch plate 31 and the stationary touch plate 5 can be quickly and automatically separated when the contact surface temperature of the moving touch plate 31 and the stationary touch plate 5 continues to rise, which can effectively reduce the occurrence of arcing or electric corrosion when the contact surface temperature of the moving touch plate 31 and the stationary touch plate 5 continues to rise, thereby effectively improving the safety and life of the equipment.

[0073] After the pressing rod 87 presses the button 88, the motor 89 can only be operated to drive the eccentric wheel 811 to rotate 180 degrees. When the pressing rod 87 releases the button 88, the motor 89 can be operated again to drive the eccentric wheel 811 to rotate 180 degrees again. This ensures that after the pressing rod 87 is subsequently moved down and reset, the squeezing force on the guide groove plate 64 is gradually reduced during the rotation of the eccentric wheel 811 under force. At this time, under the self-elastic force of the two limit rods 65 (the two limit rods 65 are elastic, that is, the two limit rods 65 can be extended or shortened under the action of external tension or pressure), the guide groove plate 64 can drive the movable touch plate 31 thereon to gradually move to the left and reset (such as Fig.10 direction shown).

[0074] When the moving touch plate 31 is completely separated from the stationary touch plate 5, and the surface temperature of the moving touch plate 31 and the stationary touch plate 5 is reduced to an appropriate value (during this process, the heat expansion gasket 82 will gradually cool and shrink), the equipment can be repaired by professionals. After the equipment is repaired, the push rod 83 is manually pushed to the upper right side, so that the push rod 83 drives the roller body 84 to gradually move and reset (such as Fig.10 In the process, the balance plate 86 will gradually rotate clockwise around the fixing frame 85 and reset, and the pressing rod 87 will gradually move downward and reset under the action of its own gravity (as shown in the direction shown in the figure). Fig.10 to facilitate subsequent use of the device.

[0075] The thermal expansion gasket 82 is made of a composite material, specifically a carbon fiber reinforced polymer material. When the surface temperature of the static touch plate 5 and the dynamic touch plate 31 exceeds 150 degrees, the contact surface between the two will begin to show obvious thermal damage and material deterioration. If this temperature is maintained for a long time, the static touch plate 5 and the dynamic touch plate 31 will gradually lose conductivity. If the temperature of the contact surface between the two continues to rise, the contact surface between the static touch plate 5 and the dynamic touch plate 31 will be ablated, resulting in poor electrical contact, thereby increasing the occurrence of arcing. The thermal expansion coefficient of carbon fiber is very low, and its temperature resistance can exceed 170 degrees. Therefore, when the surface temperature of the static touch plate 5 exceeds 170 degrees, the thermal expansion gasket 82 will begin to expand, thereby effectively ensuring that the thermal expansion gasket 82 is heated and expanded, and cooperates with the isolation component 8 to achieve timely separation of the dynamic touch plate 31 and the static touch plate 5.

[0076] like Figure 1 , Figure 8 , Fig.11 - Fig.13 As shown, a cleaning assembly 9 is provided in the protective cover 72, and the cleaning assembly 9 includes a round rod 92 fixedly mounted on the insulating plate 73, and two round rods 92 are provided, and a push plate 93 is fixedly mounted on the two round rods 92, and guide grooves 91 are provided on the arc extinguishing box 74 and the box body 75, and balls 94 are slidably mounted on the two guide grooves 91, and a support shaft 95 is fixedly mounted between the two balls 94, and a cleaning roller 96 is fixedly mounted on the support shaft 95, and a cleaning plate 97 is rotatably mounted on the support shaft 95, and two cleaning plates 97 are provided, and a connecting frame 98 is rotatably mounted on the support shaft 95, and a cleaning component is installed on the connecting frame 98.

[0077] The cleaning component includes a return spring 99 fixedly mounted on the connecting frame 98, two return springs 99 are provided, a cleaning plate 2 910 is fixedly mounted on the two return springs 99, and an insulating block 911 is fixedly mounted on the moving touch plate 31, and two insulating blocks 911 are provided.

[0078] When the device needs to be closed, the moving contact plate 31 drives the two conductive rods 1 33 and the two conductive rods 2 35 to gradually approach the static contact plate 5. At this time, the insulating plate 73 cooperates with the two round rods 92 and the two push plates 93 to generate a thrust to the left side of the support shaft 95 (such as Fig.11 As shown in the direction, the support shaft 95 moves with the moving touch plate 31, and the two guide grooves 91 limit the movement of the corresponding spheres 94, so that the support shaft 95 gradually moves downward (as shown in the direction shown in the direction). Fig.11 In the direction shown in the figure), the support shaft 95 can drive the cleaning roller 96 and the two cleaning plates 97 to gradually move downward to clean the right end and the front and rear sides of the movable touch plate 31 (such as Fig.12 The direction shown in the figure) can effectively improve the cleanliness of the contact surface between the moving touch plate 31 and the stationary touch plate 5, improve the fit between the two during subsequent contact, and effectively reduce the generation of arcs during the contact and separation process between the two.

[0079] At the same time, the support shaft 95 is forced to move to the left and gradually move downward (such as Fig.13 The two cleaning plates 910 can first clean the left end of the corresponding conductive rod 33 (as shown in the direction), through the cooperation of the connecting frame 98 and the two return springs 99. Fig.13 In the direction shown), at this time, both return springs 99 are in a compressed state.

[0080] When the two cleaning plates 910 move downward and separate from the corresponding conductive rods 33, the two cleaning plates 910 quickly move to the right (eg, Fig.13 until the two cleaning plates 910 are in contact with the surfaces of the corresponding insulating blocks 911 (as shown in the direction of FIG. Fig.13 As shown, the two insulating blocks 911 are flush with the left ends of the corresponding conductive rods 35, and then the two cleaning plates 910 are brought into contact with the corresponding conductive rods 35 by continuously moving the support shaft 95 and the connecting frame 98 downward, and their surfaces are wiped and cleaned, thereby effectively improving the fit between the surfaces of the two conductive rods 1 33 and the two conductive rods 2 35 after they are in contact with the static contact plate 5, and further reducing the generation of arcs during the closing and opening processes of the equipment.

[0081] When the device is opened, the moving touch plate 31 and the two conductive rods 1 33 and the two conductive rods 2 35 gradually move away from the static touch plate 5. Through the thrust generated by the insulating plate 73 and the two push plates 93 on the support shaft 95, and the movement limit of the support shaft 95 by the two guide grooves 91, the cleaning roller 96 and the two cleaning plates 1 97 can cooperate to clean the end and the front and rear sides of the moving touch plate 31 again, and the two cleaning plates 2 910 can clean the corresponding ends of the conductive rods 2 35 and the conductive rods 1 33 in turn, so as to effectively ensure the fit between the moving touch plate 31 and the two conductive rods 1 33 and the two conductive rods 2 35 when they are subsequently in contact with the static touch plate 5.

[0082] In addition, the purpose of setting up a rotational connection between the two cleaning plates 1 97 and the connecting frame 98 and the support shaft 95 is to ensure that when the two spheres 94 are subjected to force and move inside the corresponding guide groove 91, they rotate and drive the support shaft 95 to rotate together, the two cleaning plates 1 97 and the connecting frame 98 are parallel to the moving touch plate 31, that is, to ensure the cleaning effect on both sides of the moving touch plate 31 during the displacement of the two cleaning plates 1 97, and the cleaning effect on the ends of the corresponding conductive rod 1 33 and the conductive rod 2 35 during the displacement of the two cleaning plates 2 910.

[0083] Instructions for use: When the device needs to be closed (in the initial state, the static touch plate 5 and the moving touch plate 31 are far away from each other), start the servo motor 69. At this time, the operation of the servo motor 69 will cooperate with the sliding mechanism to make the moving touch plate 31 gradually approach the side of the static touch plate 5, and after the moving touch plate 31 contacts the static touch plate 5, the two conductive rods 1 33 and the two conductive rods 2 35 will gradually contact the moving touch plate 31, thereby achieving the effect of gradually increasing the contact points. At the same time, when the device is opened, the two conductive rods 2 35, the two conductive rods 1 33, and the moving touch plate 31 can be gradually separated from the static touch plate 5 through the cooperation of the servo motor 69 and the sliding mechanism, thereby achieving the effect of gradually reducing the contact points, which can effectively reduce the generation of arcs during the opening and closing processes.

[0084] At the same time, during the closing process, through the cooperation of the insulating plate 73 and the push-pull mechanism, the arc extinguishing box 74 can spray gas to blow off the impurities attached to the surface of the static touch plate 5, and the box body 75 can absorb the impurities attached to the surface of the static touch plate 5, thereby reducing the generation of arcs when the subsequent moving touch plate 31 contacts or separates from the static touch plate 5. If an arc is generated between the moving touch plate 31 and the static touch plate 5 during the opening process, the arc can be collected in the arc extinguishing box 74 through the cooperation of the insulating plate 73 and the push-pull mechanism, thereby reducing the duration of the arc between the moving touch plate 31 and the static touch plate 5, and reducing the damage to both of them caused by the arc.

[0085] If the temperature of the contact surface between the moving touch plate 31 and the stationary touch plate 5 continues to rise during the closing process, the heat expansion gasket 82 will gradually expand due to the heat. At this time, the motor 89 can be started through the cooperation of the heat expansion gasket 82 and the trigger mechanism, so that the eccentric wheel 811 rotates to push the moving touch plate 31 quickly away from the stationary touch plate 5, thereby achieving the effect of automatic circuit breaker opening and improving the safety of the equipment during the closing process.

[0086] In addition, when the moving touch plate 31 gradually approaches the stationary touch plate 5 or moves to reset, the insulating plate 73 cooperates with the cleaning assembly 9 to automatically clean the contact ends of the moving touch plate 31 and the two conductive rods 1 33 and the two conductive rods 2 35, thereby further reducing the generation of arcs during the opening and closing process of the moving touch plate 31 and the stationary touch plate 5, and effectively improving the service life of the equipment.

[0087] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage load disconnect switch, comprising a mounting plate (1), a second insulating column (4) being fixedly mounted on the mounting plate (1), a stationary contact plate (5) being fixedly mounted on the second insulating column (4), a moving component (6) being arranged in the mounting plate (1), and a collecting component (7) being arranged on the second insulating column (4); Features: The moving assembly (6) comprises a placement groove (61) provided on the mounting plate (1), a sliding mechanism being provided on the placement groove (61), a lap joint assembly (3) being provided on the placement groove (61), the collecting assembly (7) comprising an insulating support frame (71) fixedly mounted on the second insulating column (4), a protective cover (72) being fixedly mounted on the insulating support frame (71), an arc extinguishing box (74) and a box body (75) being fixedly mounted inside the protective cover (72), a push-pull mechanism being provided between the arc extinguishing box (74) and the box body (75), and a conduit (713) being fixedly connected to both the arc extinguishing box (74) and the box body (75); An isolation component (8) is arranged on the placement groove (61), and the isolation component (8) comprises a limit frame (81) fixedly mounted on the static touch plate (5), a trigger mechanism is installed between the limit frame (81) and the placement groove (61), a motor (89) is fixedly mounted on the top wall of the placement groove (61), and a pushing component is installed on the motor (89).

2. A high voltage load isolating switch according to claim 1, characterized in that: The sliding mechanism comprises a sliding groove (62) provided on the inner bottom wall of the mounting plate (1), and the sliding groove (62) is communicated with the placement groove (61); a sliding block (63) is slidably mounted on the sliding groove (62); a guide groove plate (64) is fixedly mounted on the sliding block (63); a servo motor (69) is fixedly mounted on the guide groove plate (64); a threaded rod (610) is fixedly mounted on the driving end of the servo motor (69), and one end of the threaded rod (610) is rotatably connected to the guide groove plate (64); a slider (611) is threadedly mounted on the threaded rod (610), and a support plate (612) is fixedly mounted on the slider (611); and a limiting component is installed between the guide groove plate (64), the support plate (612) and the placement groove (61).

3. A high voltage load isolating switch according to claim 2, characterized in that: The limiting component comprises a fixed block fixedly mounted on the guide groove plate (64), two fixed blocks are provided, and a limiting rod (65) is fixedly installed between the two fixed blocks and the placement groove (61). A limiting groove (68) is provided in the mounting plate (1), two limiting grooves (68) are provided, and both limiting grooves (68) are connected to the placement groove (61), and two ends of the support plate (612) are respectively slidably mounted on the corresponding limiting grooves (68), and a sliding groove (66) connected to the placement groove (61) is provided on the mounting plate (1), and a blocking plate (67) is slidably mounted on the sliding groove (66).

4. A high voltage load isolating switch according to claim 3, characterized in that: The lap joint assembly (3) comprises a first insulating column (2) fixedly mounted on a support plate (612), and a blocking plate (67) is fixedly connected to the first insulating column (2); a moving touch plate (31) is fixedly mounted on the first insulating column (2); a fixing groove 1 is provided on the moving touch plate (31); two fixing grooves 1 are provided, and a spring telescopic rod 1 (32) is fixedly mounted on the two fixing grooves 1; a conductive rod 1 (33) is fixedly mounted on the two spring telescopic rods 1 (32); a fixing groove 2 is provided on the moving touch plate (31); two fixing grooves 2 are provided, and a spring telescopic rod 2 (34) is fixedly mounted on the two fixing grooves 2; and a conductive rod 2 (35) is fixedly mounted on the two spring telescopic rods 2 (34).

5. A high voltage load isolating switch according to claim 4, characterized in that: The push-pull mechanism comprises an insulating plate (73) fixedly mounted on the moving contact plate (31), a guide rod (78) fixedly mounted on the insulating plate (73), a rack (79) fixedly mounted on the insulating plate (73), a rotating rod rotatably mounted on the inner wall of the protective cover (72), a rotating gear (710) meshing with the rack (79) fixedly mounted on the rotating rod, a toothed rod (711) slidably mounted through the box body (75), and the toothed rod (711) meshes with the rotating gear (710), a sealing plate (712) fixedly mounted on both the guide rod (78) and the toothed rod (711), and one side sealing plate (712) is sealingly slidably mounted in the arc extinguishing box (74), and the other side sealing plate (712) is sealingly slidably mounted in the box body (75), and a heat dissipation component is commonly mounted between the arc extinguishing box (74) and the box body (75).

6. A high voltage load isolating switch according to claim 5, characterized in that: The heat dissipation component comprises heat conducting plates (76) respectively fixedly mounted on the arc extinguishing box (74) and the side wall of the box body (75), and fins (77) evenly distributed in a linear shape are fixedly mounted on both of the heat conducting plates (76).

7. A high voltage load isolating switch according to claim 1, characterized in that: The trigger mechanism comprises a heat expansion gasket (82) fixedly mounted in a limit frame (81); a fixing frame (85) fixedly mounted in the placement groove (61); a balance plate (86) rotatably mounted on the fixing frame (85); a groove body is provided on the balance plate (86); a roller body (84) is slidably mounted on the groove body; a push rod (83) is fixedly mounted on the roller body (84); a fixing rod is fixedly mounted on the inner wall of the placement groove (61); a pressing rod (87) is slidably mounted on the fixing rod; and a button (88) is fixedly mounted on the inner top wall of the placement groove (61).

8. A high voltage load isolating switch according to claim 1, characterized in that: The pushing component comprises a rotating shaft (810) fixedly mounted on the driving end of the motor (89), and an eccentric wheel (811) is fixedly mounted on the rotating shaft (810).

9. A high voltage load isolating switch according to claim 5, characterized in that: A cleaning assembly (9) is arranged in the protective cover (72), and the cleaning assembly (9) comprises a round rod (92) fixedly mounted on the insulating plate (73), two round rods (92) are provided, and a push plate (93) is fixedly mounted on each of the two round rods (92), a guide groove (91) is provided on the arc extinguishing box (74) and the box body (75), a ball (94) is slidably mounted on each of the two guide grooves (91), a support shaft (95) is fixedly mounted between the two ball bodies (94), a cleaning roller (96) is fixedly mounted on the support shaft (95), a cleaning plate (97) is rotatably mounted on the support shaft (95), two cleaning plates (97) are provided, a connecting frame (98) is rotatably mounted on the support shaft (95), and a cleaning component is mounted on the connecting frame (98).

10. A high voltage load isolating switch according to claim 9, characterized in that: The cleaning component comprises a return spring (99) fixedly mounted on a connecting frame (98), wherein two return springs (99) are provided, and a cleaning plate 2 (910) is fixedly mounted on each of the two return springs (99); an insulating block (911) is fixedly mounted on the moving touch plate (31), and two insulating blocks (911) are provided.

Images