Electric hand-operated dual-operation integrated high-voltage isolating switch

Abstract

This invention relates to the field of disconnecting switch technology and discloses an integrated electric and manual dual-operation high-voltage disconnecting switch, including a mounting frame, multiple fixed brackets, and a control shaft. The control shaft is rotatably mounted on the upper end of the mounting frame, and the multiple fixed brackets are fixedly mounted on the top of the mounting frame. A connecting insulator is fixedly connected to one end of the top of the fixed bracket, and a locking device is fixedly connected to the top of the connecting insulator. This invention relies on the opening and closing action of the disconnecting switch to achieve autonomous replenishment and recycling of lubricating oil, eliminating the need for regular manual oiling and maintenance. It fundamentally eliminates the problem of rust and jamming caused by long-term operation and moisture absorption of high-voltage disconnecting switches, effectively avoids common faults such as incomplete closing and insufficient opening gap, and significantly improves the smoothness of equipment operation and operational stability. When the operating resistance exceeds the threshold, the oil pump can be automatically started to force oil replenishment and lubrication, actively eliminating jamming faults, solving the problem of failure due to static storage, and having stronger fault tolerance and adaptability.

Description

Technical Field

[0001] This invention relates to the field of disconnector technology, specifically to an integrated electric and manual dual-operation high-voltage disconnector. Background Technology

[0002] High-voltage disconnect switches are core switching equipment in power transmission and distribution systems, primarily used for high-voltage line isolation, circuit switching, and equipment maintenance safety isolation. They are widely used in substations, high-voltage transmission lines, and other scenarios. The accuracy and stability of their opening and closing actions directly determine the operational safety of the power system. Currently, most high-voltage disconnect switches on the market are electrically and manually operated integrated types. These devices are exposed to complex outdoor conditions for extended periods, especially near the coast, where they are subject to environmental corrosion from rain, snow, fog, humid dust, and salt spray. Rotating components such as drive shafts and connecting rods are highly susceptible to oxidation and corrosion.

[0003] The oxide layer formed by corrosion increases the frictional resistance of moving parts, causing problems such as transmission jamming and delayed action. This often leads to faults such as incomplete opening and closing of disconnecting switches, poor contact of contacts, or insufficient opening gap. In electric operation mode, corrosion jamming can cause a sudden increase in motor load, resulting in stalling, overload tripping, and inability to complete the full opening and closing stroke. In manual operation, the resistance from corrosion significantly increases the operating force, making it difficult for manual operators to accurately control the operating stroke, which can easily lead to the risk of incomplete closing or opening. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated electric and manual dual-operation high-voltage disconnect switch, which effectively avoids equipment corrosion and jamming, eliminates defects such as incomplete opening and closing and insufficient gaps, and significantly improves the overall stability of the machine's operation. It also solves the problem that oxide layers increase the frictional resistance of moving parts, causing transmission jamming and delayed operation.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: An electric and manual dual-operation integrated high-voltage disconnector includes a mounting frame, a post insulator, an operating insulator, a contact blade, a locking device, and a control shaft. The control shaft is rotatably mounted on the upper end of the mounting frame. Multiple fixed brackets are fixedly mounted on the top of the mounting frame. A connecting insulator is fixedly connected to one end of the top of each fixed bracket. A locking device is fixedly connected to the top of the connecting insulator. A post insulator is fixedly connected to the other end of the top of the fixed bracket. A contact blade is rotatably mounted on the top of the post insulator. A rotating arm is fixedly connected to the outer surface of the control shaft, and an operating insulator is rotatably mounted between the rotating arm and the contact blade. The post insulator includes a support post, and the support post is provided with a lubrication structure inside, which provides oil lubrication to the key rotating parts. The fixed frame is fixedly connected to a support pipe at one end near the post insulator, and the support pipe is provided with a connecting oil pipe inside; The contact blade includes a conductive arm, a cover, and a pressing block. The cover is fixedly installed at one end of the conductive arm, and pressing blocks are fixedly connected to both sides of the conductive arm near the cover end. By rotating the conductive arm, the pressing blocks can be pressed down to trigger the lubrication structure to complete the oil supply.

[0006] Preferably, the lubrication structure includes an oil bottle embedded inside a support column, an insulating porcelain sleeve fixedly fitted onto the outer surface of the support column, an oil pump at the bottom of the support column connected to the bottom of the oil bottle, a fixed tube fixedly connected to the upper end of the oil bottle, a top tube movably fitted onto the upper end of the fixed tube, a piston fixedly fitted onto the lower end of the top tube, a first one-way valve at the connection between the top tube and the piston, an oil suction pipe fixedly connected to the bottom of the fixed tube, a second one-way valve at the connection between the fixed tube and the oil suction pipe, and a pressing spring on the bottom surface of the piston and the fixed tube to provide the piston's restoring force.

[0007] Preferably, a pressing plate is fixedly connected to the top of the top tube, and top plates are provided at both ends of the top of the pressing plate. The top plates are movably installed on the top of the support column, the end of the conductive arm near the cover is rotatably installed on the top of the support column, and the pressing block is movably installed on the top of the top plate.

[0008] Preferably, the locking device includes a stationary contact, a housing is provided on one side of the stationary contact, and the end of the conductive arm away from the cover is embedded in the outer surface of the stationary contact.

[0009] Preferably, a magnet block is movably disposed inside the housing, and a fixing block is fixedly connected to both ends of the side of the magnet block. The position of the fixing block corresponds to the position of the conductive arm, and the top of the fixing block is arc-shaped to facilitate the conductive arm to push the fixing block.

[0010] Preferably, elastic plates are fixedly connected to both ends of the side of the magnet block, and a clamping arm is fixedly connected to one end of the elastic plate. The side of the housing is inclined, which facilitates the clamping arms on both sides to move closer together, thereby squeezing and fixing the conductive arms on both sides of the stationary contact. A touch switch and an electromagnet are provided on the inner wall of the stationary contact.

[0011] Preferably, the connecting oil pipe includes a central pipe, and two oil inlet pipes are fixedly connected to the side of the central pipe. One oil inlet pipe is connected to one side of the upper end of the top pipe, and the other oil inlet pipe is connected to the oil pump. Branch pipes are provided at both the upper and lower ends of the central pipe, and a lubricating ring is fixedly connected to one end of each branch pipe.

[0012] Preferably, the lubrication ring includes a retaining ring, and a wetted cotton is embedded inside the retaining ring. The retaining ring is connected to the branch pipe.

[0013] Preferably, the operating insulator includes an insulating arm, a movable connector is slidably mounted on the bottom of the insulating arm, a pressure sensor is provided between the movable connector and the bottom of the insulating arm, the bottom of the movable connector is rotatably connected to a rotating arm via a rotating shaft, and the top of the insulating arm is rotatably connected to the bottom of a conductive arm via a rotating shaft.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides an integrated electric and manual dual-operation high-voltage disconnecting switch, which has the following advantages: 1. This electric and manual dual-operation integrated high-voltage disconnect switch, through the setting of a mechanical automatic lubrication structure, realizes the autonomous replenishment and recycling of lubricating oil based on the opening and closing action of the disconnect switch, eliminating the need for manual regular oiling and maintenance. It fundamentally eliminates the problem of rust and jamming caused by long-term operation and moisture absorption of high-voltage disconnect switches, effectively avoids common faults such as incomplete closing and insufficient opening gap, and greatly improves the smoothness of equipment operation and operational stability.

[0015] 2. This electric and manual dual-operation integrated high-voltage disconnect switch is equipped with an operating insulator with a pressure sensor. For equipment that has been sitting and corroded for a long time and cannot be triggered by conventional self-lubrication, it can automatically start the oil pump to force oil replenishment and lubrication when the operating resistance exceeds the threshold, actively breaking the jamming fault, solving the problem of failure due to sitting, and has stronger fault tolerance and adaptability.

[0016] 3. This electric and manual dual-operation integrated high-voltage disconnect switch is equipped with a special locking detection structure. After the switch is closed, it automatically magnetically locks and holds the conductive arm to ensure that the contacts are tightly fitted. It can resist external factors such as vibration and wind disturbance and prevent the contacts from loosening, poor contact, and overheating and arcing. If the switch is not closed, it can automatically fill in the gap and link lubrication to remove obstacles, ensuring the quality of closing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the single disconnector switch structure of the present invention.

[0019] Figure 3 This is a schematic cross-sectional view of the single disconnector switch of the present invention.

[0020] Figure 4 This is a schematic diagram of the post insulator structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the post insulator of the present invention.

[0022] Figure 6 This is a schematic cross-sectional view of the operating insulator of the present invention.

[0023] Figure 7 This is a schematic diagram of the contact blade structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the locking device structure of the present invention.

[0025] Figure 9 This is a cross-sectional structural diagram of the locking device of the present invention.

[0026] Figure 10 This is a schematic diagram of the connecting oil pipe structure of the present invention.

[0027] Figure 11 This is a schematic diagram of the lubrication ring structure of the present invention.

[0028] In the diagram: 1. Mounting bracket; 2. Fixing bracket; 3. Control shaft; 4. Post insulator; 5. Connecting insulator; 6. Operating insulator; 7. Contact blade; 8. Locking device; 9. Connecting oil pipe; 21. Rotating arm; 41. Support column; 42. Insulating porcelain sleeve; 43. Oil bottle; 44. Oil pump; 45. Fixing pipe; 46. Suction pipe; 47. Pressing plate; 48. Top plate; 49. Top pipe; 410. Piston; 411. First check valve; 412. Second check valve; 413. 61. Pressing spring; 62. Insulating arm; 63. Movable connector; 74. Pressure sensor; 75. Conductive arm; 76. Cover; 77. Pressing block; 88. Stationary contact; 89. Housing; 80. Electromagnet; 81. Magnet block; 82. Fixing block; 83. Elastic sheet; 84. Clamping arm; 85. Return spring; 86. Touch switch; 97. Middle tube; 98. Oil inlet pipe; 99. Branch pipe; 90. Lubricating ring; 91. Fixing ring; 92. Wet cotton; 93. Ball bearing. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example 1: This embodiment provides an integrated electric and manual dual-operation high-voltage disconnect switch, which has the following technical features.

[0032] Please see Figures 1-5 , Figure 7 and Figure 10 The device includes a mounting frame 1, multiple fixed frames 2, and a control shaft 3. The control shaft 3 is rotatably mounted on the upper end of the mounting frame 1. The multiple fixed frames 2 are fixedly mounted on the top of the mounting frame 1. A connecting insulator 5 is fixedly connected to one end of the top of the fixed frame 2. A locking device 8 is fixedly connected to the top of the connecting insulator 5. A support insulator 4 is fixedly connected to the other end of the top of the fixed frame 2. A contact blade 7 is rotatably mounted on the top of the support insulator 4. A rotating arm 21 is fixedly connected to the outer surface of the control shaft 3. An operating insulator 6 is rotatably mounted between the rotating arm 21 and the contact blade 7. A support tube is fixedly connected to one end of the fixed frame 2 near the support insulator 4. A connecting oil pipe 9 is provided inside the support tube. In addition, the control shaft 3 is connected to an operating mechanism (not shown in the figure). The operating mechanism is an integrated metal sealed box, which integrates five major modules: electric drive, manual clutch, speed reduction transmission, electrical control, and safety interlock. The output shaft drives the isolating switch, and the electric and manual modes are interlocked and do not interfere with each other. It is suitable for both outdoor and indoor isolating switches. This structure is existing technology and will not be elaborated on here.

[0033] Specifically, the control shaft 3 is rotated by the operating mechanism, and the operating insulator 6 is moved up and down by the rotating arm 21. The operating insulator 6 is connected to the contact blade 7, so that one end of the contact blade 7 rotates on the top of the post insulator 4 and is locked inside the locking device 8 to realize the opening or closing of the gate.

[0034] The post insulator 4 includes a support post 41, which has a lubrication structure inside, and the lubrication structure is used to lubricate key parts. like Figures 4-5As shown, the specific structure of the lubrication structure includes an oil bottle 43 embedded inside a support column 41, an insulating porcelain sleeve 42 fixedly fitted on the outer surface of the support column 41, an oil pump 44 at the bottom of the support column 41, the oil pump 44 being connected to the bottom of the oil bottle 43, a fixed tube 45 fixedly connected to the upper end of the oil bottle 43, a top tube 49 movably fitted to the upper end of the fixed tube 45, a piston 410 fixedly fitted to the lower end of the top tube 49, a first one-way valve 411 at the connection between the top tube 49 and the piston 410, an oil suction pipe 46 fixedly connected to the bottom of the fixed tube 45, a second one-way valve 412 at the connection between the fixed tube 45 and the oil suction pipe 46, and a pressing spring 413 on the bottom surface of the piston 410 and the fixed tube 45 to provide the restoring force of the piston 410.

[0035] The top of the top tube 49 is fixedly connected to a pressing plate 47. Both ends of the pressing plate 47 are provided with top plates 48. The top plates 48 are movably installed on the top of the support column 41. The end of the conductive arm 71 near the cover 72 is rotatably installed on the top of the support column 41. The pressing block 73 is movably installed on the top of the top plate 48.

[0036] In this embodiment, the bottom of the support column 41 is bolted to a bottom cover, and the oil pump 44 is installed on the bottom cover. When it is necessary to add lubricating oil to the oil bottle 43, the bottom cover is removed and the oil bottle 43 is pulled out from the support column 41. Lubricating oil is added to the inlet of the oil bottle 43. During installation, the oil bottle 43 is pushed into the interior of the support column 41, and the fixing tube 45 and the oil suction tube 46 enter the interior of the oil bottle 43 to achieve assembly.

[0037] Contact blade 7, such as Figure 7 As shown, it includes a conductive arm 71, a cover 72, and a pressing block 73. The cover 72 is fixedly installed at one end of the conductive arm 71. The pressing blocks 73 are fixedly connected to both sides of the conductive arm 71 near the end of the cover 72. By rotating the conductive arm 71, the pressing blocks 73 press the lubrication structure.

[0038] A baffle is provided at one end of the conductive arm 71, and a cover 72 is provided at the rotating part of the conductive arm 71 and the post insulator 4 to shield the rotating connection and reduce the impact of external environment such as rain.

[0039] Among them, lubrication pipes such as Figure 10 As shown, the connecting oil pipe 9 includes a middle pipe 91, and two oil inlet pipes 92 are fixedly connected to the side of the middle pipe 91. One oil inlet pipe 92 is connected to one side of the upper end of the top pipe 49, and the other oil inlet pipe 92 is connected to the oil pump 44. Branch pipes 93 are provided at both the upper and lower ends of the middle pipe 91, and a lubricating ring 94 is fixedly connected to one end of the branch pipe 93.

[0040] Specifically, a rotating shaft is fixedly connected to one end of the contact blade 7 near the cover 72 and inside the rotating arm 21. The top of the insulating arm 61 is rotatably mounted on the outer surface of the rotating shaft inside the conductive arm 71. The bottom of the movable connector 62 rotates on the outer surface of the rotating shaft inside the rotating arm 21. The rotating shaft at one end of the conductive arm 71 rotates on the top of the support column 41. Therefore, lubrication rings 94 are sleeved on both sides of the rotating shaft. The structure of the lubrication ring 94 includes a fixing ring 941. A wet cotton 942 is embedded inside the fixing ring 941. The fixing ring 941 is connected to the branch pipe 93.

[0041] Therefore, the lubrication rings 94 on both sides are respectively fitted on both sides of the rotating shaft, so that the wet cotton 942 on both sides of the rotating part can make the lubrication of the rotating part more even. At the same time, the wet cotton 942 can intercept dust and other debris in the environment, so as to avoid the increased friction caused by dust at the rotating part, which would affect the opening and closing of the disconnecting switch. Meanwhile, the ball bearings 943 are set on the side of the fixed ring 941 to facilitate the rotation of the rotating parts.

[0042] In this embodiment, when the control shaft 3 rotates, it pulls the operating insulator 6 through the rotating arm 21, causing the operating insulator 6 to pull the contact blade 7 to rotate. The conductive arm 71 is engaged with the outer surface of the stationary contact 81 to close the circuit. During each closing process, the rotation of the conductive arm 71 will drive the pressing block 73 to rotate and press it against the top of the top plate 48, causing the pressing plate 47 to push the top tube 49 down. The top tube 49 pushes the piston 410 down. At this time, the pressing spring 413 is compressed, the first one-way valve 411 opens, and the lubricating oil enters the interior of the connecting oil pipe 9 through the top tube 49 by the compression of the piston 410, achieving lubrication and automatically replenishing lubrication. This avoids faults such as incomplete opening and closing of the high-voltage disconnecting switch, poor contact of the contacts, or insufficient opening gap caused by corrosion and jamming of the high-voltage disconnecting switch.

[0043] Meanwhile, the lubricating oil inside the central pipe 91 is distributed to various rotating parts through the branch pipe 93 to lubricate the critical parts.

[0044] In practical use, considering that the high-voltage disconnecting switch may corrode during long-term closing or opening, causing it to be unable to open or close and thus unable to be lubricated, the present invention also provides an operating insulator 6.

[0045] Example 2: This embodiment provides an integrated electric and manual dual-operation high-voltage disconnect switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] like Figure 6As shown, the operating insulator 6 includes an insulating arm 61, a movable connector 62 is slidably mounted on the bottom of the insulating arm 61, a pressure sensor 63 is provided between the movable connector 62 and the bottom of the insulating arm 61, the bottom of the movable connector 62 is rotatably connected to the rotating arm 21 through a rotating shaft, and the top of the insulating arm 61 is rotatably connected to the bottom of the conductive arm 71 through a rotating shaft.

[0047] Specifically, the pressure sensor 63 is electrically connected to the oil pump 44. When the control shaft 3 rotates to control the rotating arm 21 to push or pull the movable connector 62, the movable connector 62 presses or stretches the pressure sensor 63. The pressure sensor 63 detects the pressure at which the movable connector 62 drives the insulating arm 61 to move. When the pressure exceeds the set threshold, the pressure sensor 63 controls the oil pump 44 to start via an electrical signal. The oil pump 44 then delivers the lubricating oil inside the oil bottle 43 to the rotating connection through the connecting oil pipe 9. After lubrication for a period of time, the control shaft 3 rotates and attempts to operate the insulator 6 again to control the contact blade 7 to perform opening and closing actions. This prevents the high-voltage disconnect switch from corroding during prolonged closing or opening, which would prevent the high-voltage disconnect switch from automatically lubricating itself.

[0048] In addition, to further improve the opening and closing of the disconnecting switch and ensure proper contact of the contacts, the present invention also includes a locking device 8 to assist in the full closing of the disconnecting switch.

[0049] Example 3: This embodiment provides an integrated electric and manual dual-operation high-voltage disconnect switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] like Figures 8-9 As shown, the locking device 8 includes a stationary contact 81 fixedly installed on the top of the connecting insulator 5. A housing 82 is provided on one side of the stationary contact 81, and the end of the conductive arm 71 away from the cover 72 is embedded in the outer surface of the stationary contact 81.

[0051] The housing 82 has a movable magnet block 84 inside. Both ends of the magnet block 84 are fixedly connected to a fixing block 85. The position of the fixing block 85 corresponds to the position of the conductive arm 71. The top of the fixing block 85 is arc-shaped to facilitate the conductive arm 71 to push the fixing block 85. Both ends of the magnet block 84 are fixedly connected to an elastic sheet 86. One end of the elastic sheet 86 is fixedly connected to a clamping arm 87. The side of the housing 82 is inclined, which facilitates the clamping arms 87 on both sides to move closer together, thereby squeezing and fixing the conductive arms 71 on both sides of the stationary contact 81. The inner wall of the stationary contact 81 is provided with a touch switch 89 and an electromagnet 83.

[0052] Both sides of the magnet 84 are provided with pressing blocks, and a return spring 88 is provided between the pressing blocks and the side wall of the stationary contact 81. When the conductive arm 71 is closed, it will push the fixing block 85 only after the conductive arm 71 is fully closed, so that the fixing block 85 moves inside the housing 82. When the magnet 84 contacts the touch switch 89, the electromagnet 83 works and generates magnetic attraction to attract the magnet 84, so that the magnet 84 drives the elastic sheet 86 and the clamping arm 87 to move. Using the inclined surface on the side of the housing 82, the clamping arms 87 on both sides approach each other and squeeze the conductive arm 71, so that the conductive arm 71 fits tightly against the stationary contact 81 and locks the circuit. At this time, the contact will not be insufficient due to the influence of external environmental vibrations or other factors.

[0053] When the conductive arm 71 fails to close properly, the magnet block 84 cannot contact the touch switch 89. At this time, the operating mechanism continues to control the control shaft 3 to rotate in an attempt to close the circuit. If it still fails to close properly, the rotating arm 21 drives the movable connecting piece 62 to exceed the threshold of the pressure sensor 63. The pressure sensor 63 then controls the oil pump 44 to work again and perform lubrication through an electrical signal.

[0054] Working principle: In summary, this electric and manual dual-operation integrated high-voltage disconnecting switch controls the rotation of the control shaft 3 through the operating mechanism, and pushes the operating insulator 6 up and down through the rotating arm 21. The operating insulator 6 is linked to the contact blade 7, so that one end of the contact blade 7 rotates with the top of the post insulator 4 as the fulcrum and is locked into the inside of the locking device 8, thereby realizing the opening or closing action of the disconnecting switch.

[0055] During the closing process, the control shaft 3 rotates, and the conductive arm 71 engages with the outer surface of the stationary contact 81 to close the circuit. During each closing process, the rotation of the conductive arm 71 will drive the squeezing block 73 to rotate and press it against the top plate 48, causing the pressing plate 47 to push the top tube 49 down. The top tube 49 pushes the piston 410 down. At this time, the pressing spring 413 is compressed, the first one-way valve 411 opens, and the lubricating oil enters the interior of the connecting oil pipe 9 through the squeezing of the piston 410 and the top tube 49. The lubricating oil is distributed to each rotating shaft through the middle pipe 91, the oil inlet pipe 92, and the branch pipe 93. The rotating parts are evenly lubricated through the wet cotton 942 inside the lubrication ring 94. During the opening process, the squeezing block 73 moves out of the top of the top plate 48. At this time, the pressing spring 413 resets and pushes the piston 410 upward. At this time, the first one-way valve 411 closes and the second one-way valve 412 opens, so that the fixed pipe 45 forms a negative pressure and draws the lubricating oil inside the oil bottle 43 into the fixed pipe 45 through the oil suction pipe 46. After closing, lubricating oil is automatically added to prevent the rotating parts from rusting and affecting the opening and closing of the subsequent disconnecting switch. During the opening process, the squeezing block 73 detaches from the top of the top plate 48, the pressing spring 413 elastically resets and pushes the piston 410 upward, the first one-way valve 411 closes and the second one-way valve 412 opens, a negative pressure is formed inside the fixed pipe 45, and the oil is drawn from the oil bottle 43 through the oil suction pipe 46 to complete the oil storage and replenishment, realizing automatic lubrication of the opening and closing cycle, avoiding equipment corrosion and jamming, and eliminating faults such as incomplete opening and closing, poor contact of contacts, and insufficient gate opening gap.

[0056] The equipment is equipped with a pressure detection and early warning lubrication structure for the operating insulator 6, which can solve the problem of inability to self-lubricate caused by long-term static corrosion. When the equipment is static and corroded for a long time, causing the load pressure of the control shaft 3 driving the rotating arm 21 to push and pull the movable connecting part 62 and the insulating arm 61 to exceed the set threshold, the pressure sensor 63 outputs an electrical signal to start the oil pump 44, which forcibly delivers the lubricating oil inside the oil bottle 43 to each rotating connection part. After the forced lubrication is completed, the control shaft 3 will move again to try to open and close, thus breaking the corrosion jamming fault.

[0057] The equipment is equipped with a locking device 8, a closing locking auxiliary structure, to ensure that the circuit is fully closed and the contacts are in full contact. When closing, if the conductive arm 71 is fully closed, it will squeeze the fixing block 85 and push the magnet block 84 to move until the magnet block 84 contacts the trigger switch 89, triggering the electromagnet 83 to magnetically attract the magnet block 84. This causes the elastic sheet 86 and the clamping arm 87 to retract towards each other along the inclined surface of the housing 82, squeezing and fixing the conductive arm 71 so that the conductive arm 71 is tightly attached to the stationary contact 81, achieving closing locking and preventing poor contact caused by external vibration.

[0058] If the circuit breaker is not fully closed, the magnet 84 will not be able to contact the touch switch 89, and the equipment will continue to drive the control shaft 3 through the operating mechanism to complete the closing. If the closing is continuously blocked and the pressure sensor 63 detects that the pressure exceeds the limit again, the forced lubrication program will be triggered again to repeatedly remove the jamming fault until the equipment is fully closed.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-operation (electric and manual) high-voltage disconnector, comprising a mounting bracket (1), multiple fixing brackets (2), a post insulator (4), an operating insulator (6), a contact blade (7), a locking device (8), and a control shaft (3), wherein the control shaft (3) is rotatably mounted on the upper end of the mounting bracket (1), and the multiple fixing brackets (2) are fixedly mounted on the top of the mounting bracket (1), characterized in that: The post insulator (4) includes a support post (41), and the support post (41) is provided with a lubrication structure inside, and the key rotating parts are lubricated by the lubrication structure. The fixed frame (2) is fixedly connected to a support pipe at one end near the post insulator (4), and the support pipe is provided with a connecting oil pipe (9). The contact blade (7) includes a conductive arm (71), a cover (72) and a pressing block (73). The cover (72) is fixedly installed at one end of the conductive arm (71). The pressing blocks (73) are fixedly connected to both sides of the conductive arm (71) near the end of the cover (72). By rotating the conductive arm (71), the pressing blocks (73) can be pressed down to trigger the lubrication structure to complete the oil supply.

2. The electric and manual dual-operation integrated high-voltage disconnecting switch according to claim 1, characterized in that, The lubrication structure includes an oil bottle (43) embedded in the support column (41), an insulating porcelain sleeve (42) is fixedly sleeved on the outer surface of the support column (41), and an oil pump (44) is provided at the bottom of the support column (41). The oil pump (44) is connected to the bottom of the oil bottle (43). The upper end of the oil bottle (43) is fixedly connected to a fixed tube (45). The upper end of the fixed tube (45) is movably sleeved with a top tube (49). The lower end of the top tube (49) is fixedly sleeved with a piston (410). A first one-way valve (411) is provided at the connection between the top tube (49) and the piston (410). The bottom of the fixed tube (45) is fixedly connected to an oil suction pipe (46). A second one-way valve (412) is provided at the connection between the fixed pipe (45) and the oil suction pipe (46), and a pressing spring (413) is provided on the bottom surface of the piston (410) and the fixed pipe (45) to provide the restoring force of the piston (410).

3. The electric and manual dual-operation integrated high-voltage disconnecting switch according to claim 2, characterized in that, The top of the top tube (49) is fixedly connected to a pressing plate (47), and both ends of the pressing plate (47) are provided with top plates (48). The top plates (48) are movably installed on the top of the support column (41). The end of the conductive arm (71) near the cover (72) is rotatably installed on the top of the support column (41). The pressing block (73) is movably installed on the top of the top plate (48).

4. The electric and manual dual-operation integrated high-voltage disconnecting switch according to claim 1, characterized in that, The locking device (8) includes a stationary contact (81), a housing (82) is provided on one side of the stationary contact (81), and the end of the conductive arm (71) away from the cover (72) is embedded in the outer surface of the stationary contact (81).

5. A dual-operation (electric and manual) high-voltage disconnector according to claim 4, characterized in that, The housing (82) is equipped with a movable magnet block (84). Both ends of the magnet block (84) are fixedly connected to a fixing block (85). The position of the fixing block (85) corresponds to the position of the conductive arm (71), and the top of the fixing block (85) is arc-shaped, which facilitates the conductive arm (71) to push the fixing block (85).

6. A high-voltage disconnector switch with both electric and manual operation as described in claim 5, characterized in that, Both ends of the side of the magnet block (84) are fixedly connected to elastic plates (86), and one end of the elastic plate (86) is fixedly connected to a clamping arm (87). The side of the housing (82) is inclined, which facilitates the clamping arms (87) on both sides to move closer together, thereby squeezing and fixing the conductive arms (71) on both sides of the stationary contact (81). The inner wall of the stationary contact (81) is provided with a touch switch (89) and an electromagnet (83).

7. A high-voltage disconnector switch with both electric and manual operation as described in claim 2, characterized in that, The connecting oil pipe (9) includes a middle pipe (91), and two oil inlet pipes (92) are fixedly connected to the side of the middle pipe (91). One oil inlet pipe (92) is connected to one side of the upper end of the top pipe (49), and the other oil inlet pipe (92) is connected to the oil pump (44). Branch pipes (93) are provided at both the upper and lower ends of the middle pipe (91), and a lubricating ring (94) is fixedly connected to one end of the branch pipe (93).

8. A dual-operation (electric and manual) high-voltage disconnector according to claim 7, characterized in that, The lubrication ring (94) includes a retaining ring (941), in which a wetted cotton (942) is embedded, and the retaining ring (941) is connected to the branch pipe (93).

9. A high-voltage disconnector switch with both electric and manual operation as described in claim 1, characterized in that, The operating insulator (6) includes an insulating arm (61), a movable connector (62) is slidably mounted on the bottom of the insulating arm (61), a pressure sensor (63) is provided between the movable connector (62) and the bottom of the insulating arm (61), the bottom of the movable connector (62) is rotatably connected to the rotating arm (21) through a rotating shaft, and the top of the insulating arm (61) is rotatably connected to the bottom of the conductive arm (71) through a rotating shaft.

Images