An insulating high-voltage cabinet for a substation

Abstract

The present invention relates to the technical field of high-voltage cabinets, and in particular to an insulated high-voltage cabinet for a transformer substation; the cabinet effectively solves the problem of easy electric shock caused by exposed contacts during maintenance and the inconvenience of removing internal components for maintenance; the cabinet comprises a cabinet body, a plurality of bus contacts evenly distributed along the left and right directions are fixedly connected to the upper side of the cabinet body, and a plurality of outgoing line contacts corresponding to the bus contacts are fixedly connected to the lower side of the cabinet body; the present invention can use the shielding component to shield the contacts in time after the power-off component is powered off to avoid electric shock caused by exposed contacts by arranging a shielding component, a baffle, a fixing frame and a locking component, and at the same time use the locking component to lock the position of the baffle to avoid the problem of accidentally touching and opening the baffle during subsequent maintenance; the insulating plate and the driving component are arranged, and the driving component can be used to drive the insulating plate to rise and fall to achieve the purpose of secondary insulation, avoid the problem of accidental touching during maintenance, and improve safety.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage cabinets, and in particular to an insulating high-voltage cabinet for a transformer substation. Background Art

[0002] High-voltage electrical cabinets refer to electrical products with voltage levels of 3.6kV-550kV that play the role of switching, controlling or protecting in power generation, transmission, distribution, power conversion and consumption of power systems. They mainly include high-voltage circuit breakers, high-voltage disconnectors and grounding switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switch cabinets. However, the existing high-voltage cabinets have high-voltage contacts inside, so when repairing, it is necessary to use insulating plates to isolate the inside to ensure the safety of repair. At the same time, the joint contacts need to be removed during maintenance to facilitate internal maintenance. However, the current joint contacts are troublesome to load and unload, which needs to be solved urgently. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an insulated high-voltage cabinet for a substation, which effectively solves the problem of easy electric shock caused by exposed contacts during maintenance and the inconvenience of removing internal components for maintenance.

[0004] The technical solution is as follows: the present invention comprises a cabinet body, a plurality of bus contacts evenly distributed along the left and right directions of the cabinet body are fixedly connected on the upper side of the cabinet body, a plurality of outgoing line contacts corresponding to the bus contacts one by one are fixedly connected on the lower side of the cabinet body, a power-off component is provided in the middle part of the cabinet body, the power-off component can be used to connect the bus contacts and the outgoing line contacts, a shielding component is provided on the rear side of the cabinet body, baffles are respectively provided on the upper and lower sides of the cabinet body, the shielding component can drive the two baffles to move relative to or away from each other, a fixed frame located behind the power-off component is fixedly connected in the cabinet body, a locking component is provided in the middle part of the fixed frame, the locking component can lock the shielding component, an insulating plate is slidably connected in the cabinet body, a driving component is provided on the left side of the cabinet body, the driving component can drive the insulating plate to rise and fall, a receiving plate which can move forward and backward is slidably connected in the middle part of the cabinet body, and the receiving plate is used to receive the power-off component.

[0005] The power-off assembly includes a base, a lead screw is rotatably connected to the middle of the base, a movable seat is slidably connected to the base, the movable seat is threadedly connected to the lead screw, and a plurality of U-shaped engagement contacts are arranged on the rear side of the movable seat, and the upper and lower sides of the engagement contacts can be respectively inserted into the bus contacts and outgoing line contacts on the corresponding sides.

[0006] The front end of the cabinet body is hinged with multiple cabinet doors evenly distributed along the up and down directions thereof, the lower side of the middle cabinet door is rotatably connected with a connecting plate coaxial with the lead screw, the front end of the lead screw is provided with a connecting groove, the rear end of the connecting plate is fixedly connected with a connecting pin that can be inserted into the connecting groove, the front end of the connecting plate is provided with a torsion groove, the lower side of the middle cabinet door is slidably connected with a guard plate that can cover the connecting plate, the front end of the guard plate is fixedly connected with a lifting block, the lifting block is slidably connected to the cabinet door, and the upper side of the guard plate is provided with a compression spring located between the guard plate and the cabinet door.

[0007] The left and right sides of the cabinet are respectively fixedly connected with slide rails, and the left and right sides of the base are respectively slidably connected to the slide rails, and the left and right sides of the cabinet are respectively fixedly connected with limit blocks located in front of the corresponding side slide rails, and the opposite ends of the two limit blocks are respectively fixedly connected with two compression springs located between the limit blocks and the cabinet. The left and right sides of the base are respectively slidably connected with release plates that can contact the corresponding side limit blocks, and the front end of the release plate is provided with an inclined groove, and the left and right sides of the front end of the base are respectively slidably connected with levers, and the rear end of the lever can be inserted into the inclined groove on the corresponding side, and the front end of the release plate is provided with three compression springs located between the release plate and the base.

[0008] The shielding assembly includes a U-shaped pushing frame, which is slidably connected to the cabinet body. Four compression springs are respectively provided on the left and right sides of the pushing frame and located between the pushing frame and the cabinet body. Two driving grooves that are opposite to each other and in an eight-shaped shape are respectively provided on the left and right sides of the pushing frame. Driving pins are respectively fixedly connected to the left and right sides of the baffle, and the driving pins are located in the driving grooves on the corresponding sides.

[0009] The left and right sides of the pushing frame are respectively fixedly connected with push rods, a waist-shaped groove is provided at the front end of the push rod, a connecting rod is slidably connected in the waist-shaped groove, a trigger block is fixedly connected to one end of the connecting rod close to the base, the left and right sides of the cabinet are respectively fixedly connected with fixed blocks, an L-shaped connecting groove is provided on the fixed block, the other end of the connecting rod is located in the connecting groove on the corresponding side, the left and right sides of the base are respectively fixedly connected with contact blocks, the rear end of the contact block is an inclined surface with upper rear and lower front, and the upper end of the trigger block can contact the inclined surface of the contact block on the corresponding side.

[0010] The locking assembly includes a straight rod, the front end of which can contact the rear end of the base, the rear end of the straight rod is provided with a compression spring five located between the straight rod and the fixed frame, the rear side of the straight rod is provided with an upper rear and lower front sliding groove, a locking pin is slidably connected in the fixed frame, the lower end of the locking pin is fixedly connected to a sliding pin located in the sliding groove, and a locking groove is provided at the lower end of the pushing frame, and the locking pin can be inserted into the locking groove.

[0011] The driving assembly includes a spur gear, a pulley 1 is fixedly connected to the rear end of the spur gear, the pulley 1 is rotatably connected to the cabinet, a pulley 2 is provided directly behind the pulley 1, the pulley 2 is rotatably connected to the cabinet, the pulley 1 and the pulley 2 are connected via a belt transmission, a bevel gear is fixedly connected to the left end of the pulley 2, a lead screw is rotatably connected to the left side of the cabinet, the lead screw is threadedly connected to the insulating plate, a helical gear meshing with the bevel gear is fixedly connected to the lower end of the lead screw, and a rack meshing with the spur gear is fixedly connected to the left side of the base.

[0012] A toggle groove is provided on the rear side of the lower end of the connecting plate, a toggle rod is rotatably connected to the right side of the cabinet, a toggle pin located in the toggle groove is fixedly connected to the upper left end of the toggle rod, an L-shaped swing rod is fixedly connected to the upper right end of the toggle rod, an L-shaped moving rod is slidably connected in the fixed frame, the front end of the moving rod can contact the rear end of the base, a moving groove is provided on the rear side of the moving rod, a moving pin located in the moving groove is fixedly connected to the upper left end of the swing rod, and a handle is fixedly connected to the front end of the connecting plate.

[0013] The upper end of the cabinet is hinged with an L-shaped cover plate, the rear end of the cover plate is hinged with a fixing pin, the rear end of the cabinet is provided with an arc-shaped fixing groove, the fixing pin can be inserted into the fixing groove, the lower end is fixedly connected with a base, and the front ends of the two cabinet doors in the middle and the lower side are fixedly connected with a heat dissipation net.

[0014] The present invention provides a shielding component, a baffle, a fixing frame and a locking component. After the power-off component is powered off, the shielding component can be used to shield the contacts in time to prevent the contacts from being exposed and causing electric shock. At the same time, the locking component can be used to lock the position of the baffle to prevent the baffle from being accidentally opened during subsequent maintenance. The insulating plate and the driving component can be used to drive the insulating plate to rise and fall to achieve the purpose of secondary insulation, thereby avoiding the problem of accidental contact during maintenance and improving safety.

[0015] In the prior art, when the power off assembly needs to be moved out as a whole, a spare trolley with the same height is required to receive it, which is very troublesome. The present invention provides a receiving plate, which can be used for temporary support when the power off assembly needs to be moved out as a whole. At the same time, the moving rod can be used to push the power off assembly out a certain distance during the process of pulling out the receiving plate, thereby facilitating the removal of the power off assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric view of the present invention.

[0017] Figure 2 It is a partial cutaway structural schematic diagram of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the heat dissipation network in the present invention.

[0019] Figure 4 It is a structural schematic diagram of the shift lever in the present invention.

[0020] Figure 5 It is a first structural schematic diagram of the base in the present invention.

[0021] Figure 6 It is a second structural schematic diagram of the base in the present invention.

[0022] Figure 7 It is an exploded schematic diagram of the push frame in the present invention.

[0023] Figure 8 It is an exploded schematic diagram of the receiving plate in the present invention.

[0024] Fig. 9 It is a first structural schematic diagram of the cabinet in the present invention.

[0025] Fig.10 It is a second structural schematic diagram of the cabinet in the present invention.

[0026] Fig.11 The present invention Figure 2 Enlarged view of point A in the middle.

[0027] Fig.12 The present invention Figure 2 Enlarged view of point B in the middle.

[0028] Fig.13 The present invention Figure 6 Enlarged view of point C in the middle.

[0029] Fig.14 The present invention Figure 6 Enlarged view of point D in the middle.

[0030] In the figure: 1, cabinet; 2, busbar contact; 3, outgoing line contact; 4, power-off assembly; 5, shielding assembly; 6, baffle; 7, fixing frame; 8, locking assembly; 9, insulating plate; 10, receiving plate; 11, base; 12, lead screw; 13, moving seat; 14, engagement contact; 15, cabinet door; 16, connecting plate; 17, connecting groove; 18, connecting pin; 19, torsion groove; 20, guard plate; 21, slide rail; 22, limit block; 23, release plate; 24, tilting groove; 25, lever; 26, push frame; 27, drive groove; 28, drive pin; 29, push rod; 30. waist-shaped groove; 31. connecting rod; 32. trigger block; 33. fixed block; 34. connecting groove; 35. contact block; 36. straight rod; 37. slide groove; 38. locking pin; 39. slide pin; 40. spur gear; 41. pulley one; 42. pulley two; 43. belt; 44. bevel gear; 45. screw rod; 46. helical gear; 47. rack; 48. toggle groove; 49. toggle rod; 50. toggle pin; 51. rocker rod; 52. moving rod; 53. moving groove; 54. moving pin; 55. handle; 56. cover plate; 57. heat dissipation net; 58. locking groove. DETAILED DESCRIPTION

[0031] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0032] Depend on Figures 1 to 14 It is given, including a cabinet 1, a plurality of bus contacts 2 evenly distributed along the left and right directions are fixedly connected to the upper side of the cabinet 1, a plurality of outgoing line contacts 3 corresponding to the bus contacts 2 are fixedly connected to the lower side of the cabinet 1, a power-off component 4 is provided in the middle of the cabinet 1, and the power-off component 4 can be used to connect the bus contacts 2 and the outgoing line contacts 3, a shielding component 5 is provided on the rear side of the cabinet 1, and baffles 6 are respectively provided on the upper and lower sides of the cabinet 1, and the shielding component 5 can drive the two baffles 6 to move relative to or away from each other, a fixed frame 7 located behind the power-off component 4 is fixedly connected in the cabinet 1, a locking component 8 is provided in the middle of the fixed frame 7, and the locking component 8 can lock the shielding component 5, an insulating plate 9 is slidably connected in the cabinet 1, a driving component is provided on the left side of the cabinet 1, and the driving component can drive the insulating plate 9 to rise and fall, and a receiving plate 10 which can move forward and backward is slidably connected in the middle of the cabinet 1, and the receiving plate 10 is used to receive the power-off component 4.

[0033] The busbar contact 2, the outgoing contact 3 and the power-off component 4 are provided so that the internal power can be cut off in time when maintenance or an accident occurs, so as to avoid the problem of high-voltage electric shock caused by direct contact. The shielding component 5, the baffle 6, the fixing frame 7 and the locking component 8 can be used to shield the contacts in time after the power-off component 4 is powered off to avoid the contact exposure and electric shock. At the same time, the position of the baffle 6 is locked by the locking component 8 to avoid the problem of accidentally touching and opening the baffle 6 during subsequent maintenance. The insulating plate 9 and the driving component are provided so that the driving component can be used to drive the insulating plate 9 to lift The insulating plate 9 is lowered in time to shield the internal parts during maintenance, and at the same time, it plays the purpose of secondary insulation, avoids the problem of accidental contact during maintenance, and improves safety. In the prior art, when the power-off assembly 4 needs to be moved out as a whole, a spare cart with the same height is required to receive it, which is very troublesome. The present invention provides a receiving plate 10, when the power-off assembly 4 needs to be moved out as a whole, the receiving plate 10 can be used for temporary support, and at the same time, in the process of pulling out the receiving plate 10, the moving rod 52 can be used to push the power-off assembly 4 out a certain distance, so as to facilitate the removal of the power-off assembly 4.

[0034] The power-off assembly 4 includes a base 11, a lead screw 12 is rotatably connected to the middle of the base 11, a movable seat 13 is slidably connected to the base 11, the movable seat 13 is threadedly connected to the lead screw 12, and a plurality of U-shaped engaging contacts 14 are provided on the rear side of the movable seat 13, and the upper and lower sides of the engaging contacts 14 can be respectively inserted into the busbar contacts 2 and the outgoing line contacts 3 on the corresponding sides.

[0035] The base 11, the lead screw 12, the movable seat 13 and the engagement contact 14 are arranged so that the movable seat 13 can be driven to move forward and backward on the base 11 by the rotating rod of the lead screw 12, so that the engagement contact 14 can be inserted into or removed from the busbar contact 2 and the outgoing contact 3, thereby realizing power off and power on. The operation is simple and convenient. At the same time, the base 11 can serve the purpose of stably supporting the upper structure.

[0036] The front end of the cabinet body 1 is hinged with a plurality of cabinet doors 15 evenly distributed along the up and down directions thereof, the lower side of the middle cabinet door 15 is rotatably connected with a connecting plate 16 coaxial with the lead screw 12, the front end of the lead screw 12 is provided with a connecting groove 17, the rear end of the connecting plate 16 is fixedly connected with a connecting pin 18 which can be inserted into the connecting groove 17, the front end of the connecting plate 16 is provided with a torsion groove 19, the lower side of the middle cabinet door 15 is slidably connected with a guard plate 20 which can cover the connecting plate 16, the front end of the guard plate 20 is fixedly connected with a lifting block, the lifting block is slidably connected to the cabinet door 15, and the upper side of the guard plate 20 is provided with a compression spring 1 located between the guard plate 20 and the cabinet door 15.

[0037] The cabinet door 15, the connecting plate 16, the connecting groove 17, the connecting pin 18 and the torsion groove 19 can be arranged so that the connecting plate 16 can be driven to rotate by utilizing the torsion groove 19 without opening the cabinet door 15, thereby realizing the rotation of the lead screw 12, and the internal power can be connected and disconnected, thereby reducing the risk of electric shock and improving safety. The guard plate 20, the lifting block and the compression spring can be arranged to protect the connecting plate 16 to avoid being exposed to the outside and being damaged.

[0038] The cabinet 1 is fixedly connected with slide rails 21 on the left and right sides respectively, and the base 11 is slidably connected to the slide rails 21 on the left and right sides respectively, and the cabinet 1 is fixedly connected with limit blocks 22 located in front of the corresponding side slide rails 21 on the left and right sides respectively, and the opposite ends of the two limit blocks 22 are fixedly connected with two compression springs located between the limit blocks 22 and the cabinet 1. The left and right sides of the base 11 are slidably connected with release plates 23 that can contact the limit blocks 22 on the corresponding sides, and an inclined groove 24 is provided at the front end of the release plate 23. The left and right sides of the front end of the base 11 are slidably connected with levers 25, and the rear end of the lever 25 can be inserted into the inclined groove 24 on the corresponding side, and the front end of the release plate 23 is provided with three compression springs located between the release plate 23 and the base 11.

[0039] The slide rail 21 is provided to facilitate the installation of the power-off component 4 to prevent it from tilting after installation, which would cause the engagement contact 14 to be unable to connect normally with the busbar contact 2 and the outgoing contact 3. The limit block 22, the second compression spring, the limit release plate 23, the lever 25, the inclined groove 24 and the third compression spring are provided to limit the base 11 after the base 11 is installed to prevent it from shaking at will. At the same time, the lever 25 can be used to release the limit of the base 11, so that the installation and uninstallation of the power-off component 4 can be realized.

[0040] The shielding component 5 includes a U-shaped pushing frame 26, which is slidably connected to the cabinet 1. The pushing frame 26 is provided with four compression springs located between the pushing frame 26 and the cabinet 1 on the left and right sides. The pushing frame 26 is provided with two driving grooves 27 that are opposite to each other and in an eight-shaped shape on the left and right sides. The baffle 6 is fixedly connected with driving pins 28 on the left and right sides, and the driving pins 28 are located in the driving grooves 27 on the corresponding sides.

[0041] The push frame 26, the compression spring 4, the drive slot 27 and the drive pin 28 can be arranged so that the forward and backward movement of the push frame 26 can drive the drive pin 28 to move up and down in the drive slot 27, thereby driving the upper and lower baffles 6 to move relative to or away from each other, thereby achieving the shielding and unshielding of the contacts.

[0042] The left and right sides of the pushing frame 26 are respectively fixedly connected with push rods 29, and a waist-shaped groove 30 is provided at the front end of the push rod 29. A connecting rod 31 is slidably connected in the waist-shaped groove 30. A trigger block 32 is fixedly connected to the end of the connecting rod 31 close to the base 11. The left and right sides of the cabinet 1 are respectively fixedly connected with fixed blocks 33, and an L-shaped connecting groove 34 is provided on the fixed block 33. The other end of the connecting rod 31 is located in the connecting groove 34 on the corresponding side. The left and right sides of the base 11 are respectively fixedly connected with contact blocks 35, and the rear end of the contact block 35 is an inclined surface with upper rear and lower front. The upper end of the trigger block 32 can contact the inclined surface of the contact block 35 on the corresponding side.

[0043] The push rod 29, waist-shaped groove 30, connecting rod, trigger block 32, fixed block 33, connecting groove 34 and contact block 35 are arranged so that the forward and backward movement of the movable seat 13 can be used to drive the push rod 29 to move backward through the contact block 35, which can drive the push frame 26 to move backward, and the two baffles 6 are opened. Then, under the action of the connecting groove 34, the trigger block 32 moves backward and downward at the same time. When the trigger block 32 contacts the lower end of the contact block 35, the baffle 6 is fully opened, and the trigger block 32 moves to the lower end limit position. At this time, the movable seat 13 can continue to move backward until the engagement contact 14 is inserted into the busbar contact 2 and the outgoing contact 3. At the same time, the contact block 35 limits the position of the push frame 26 to prevent the baffle 6 from moving at will.

[0044] The locking assembly 8 includes a straight rod 36, the front end of which can contact the rear end of the base 11, and the rear end of the straight rod 36 is provided with a compression spring 5 located between the straight rod 36 and the fixed frame 7. The rear side of the straight rod 36 is provided with an upper rear and lower front sliding groove 37, and a locking pin 38 is slidably connected in the fixed frame 7. The lower end of the locking pin 38 is fixedly connected to a sliding pin 39 located in the sliding groove 37, and a locking groove 58 is provided at the lower end of the pushing frame 26, and the locking pin 38 can be inserted into the locking groove 58.

[0045] The straight rod 36, the slide groove 37, the locking pin 38, the slide pin 39 and the locking groove 58 are arranged so that the push frame 26 can move forward after the base 11 is moved out. When the locking pin 38 is directly opposite to the locking groove 58, the locking pin 38 is inserted into the locking groove 58 under the action of the compression spring 5 and the straight rod 36 to fix the position of the push frame 26 and prevent the baffle 6 from opening at will.

[0046] The driving assembly includes a spur gear 40, a pulley 41 is fixedly connected to the rear end of the spur gear 40, and the pulley 41 is rotatably connected to the cabinet 1. A pulley 42 is provided directly behind the pulley 41, and the pulley 42 is rotatably connected to the cabinet 1. The pulley 41 and the pulley 42 are connected to the cabinet 1 via a belt 43. A bevel gear 44 is fixedly connected to the left end of the pulley 42, and a screw rod 45 is rotatably connected to the left side of the cabinet 1. The screw rod 45 is threadedly connected to the insulating plate 9, and a helical gear 46 meshing with the bevel gear 44 is fixedly connected to the lower end of the screw rod 45. A rack 47 meshing with the spur gear 40 is fixedly connected to the left side of the base 11.

[0047] The spur gear 40, pulley 1 41, pulley 2 42, belt 43, bevel gear 44, screw 45, helical gear 46 and rack 47 are arranged so that when the base 11 is placed on the slide rail 21 and pushed in a certain distance, the rack 47 engages with the spur gear 40 to drive the spur gear 40 to rotate. The spur gear 40 rotates via the pulley 1 41, belt 43, pulley 2 42 to drive the bevel gear 44 and the helical gear 46 to rotate. The helical gear 46 can drive the insulating plate 9 to rise and fall via the screw 45. When the insulating plate 9 is placed in the base 11, the insulating plate 9 rises, and when the insulating plate 9 is removed from the base 11, the insulating plate 9 falls, thereby protecting the internal structure and providing insulation to prevent electric shock.

[0048] A toggle groove 48 is provided on the rear side of the lower end of the receiving plate 10, and a toggle rod 49 is rotatably connected to the right side of the cabinet 1, and a toggle pin 50 located in the toggle groove 48 is fixedly connected to the upper left end of the toggle rod 49, and an L-shaped swing rod 51 is fixedly connected to the upper right end of the toggle rod 49, and an L-shaped moving rod 52 is slidably connected in the fixed frame 7, and the front end of the moving rod 52 can contact the rear end of the base 11, and a moving groove 53 is provided on the rear side of the moving rod 52, and a moving pin 54 located in the moving groove 53 is fixedly connected to the upper left end of the swing rod 51, and a handle 55 is fixedly connected to the front end of the receiving plate 10.

[0049] The toggle slot 48, toggle rod 49, toggle pin 50, rocker rod 51, moving rod 52, moving slot 53 and moving pin 54 are arranged so that the moving rod 52 can be used to drive the rocker rod 51 to swing, and then the rocker rod 51 can drive the toggle rod 49 to swing. The toggle rod 49 can drive the receiving plate 10 to move out or move into the cabinet 1, so as to realize the replacement of the position of the receiving plate 10. At the same time, when the base 11 is completely entered into the cabinet 1, the base 11 can push the moving rod 52 to the rear end limit position and push the receiving plate 10 back into the cabinet 1. At the same time, the receiving plate 10 is limited so that it cannot be moved out at will. When the base 11 needs to be moved out, after the base 11 is released, the receiving plate 10 can be pulled out by the handle 55. During the pulling process, the moving rod 52 can be used to drive the base 11 to move forward a certain distance, so as to facilitate the complete removal of the base 11.

[0050] The upper end of the cabinet body 1 is hinged with an L-shaped cover plate 56, and the rear end of the cover plate 56 is hinged with a fixing pin. The rear end of the cabinet body 1 is provided with an arc-shaped fixing groove, and the fixing pin can be inserted into the fixing groove. The lower end is fixedly connected to a base, and the front ends of the two cabinet doors 15 in the middle and the lower side are fixedly connected to a heat dissipation net 57.

[0051] The cover plate 56, the fixing pin and the fixing groove can be provided to limit the position of the cover plate 56, and it is convenient to use the cover plate 56 to repair the position of the busbar contact 2. At the same time, the cover plate 56 is located directly above to avoid being opened at will and causing the risk of electric shock.

[0052] When the present invention is in use, when maintenance is required, the connecting plate 16 is rotated by a tool, the connecting plate 16 drives the lead screw 12 to rotate, the lead screw 12 drives the moving seat 13 to move forward, the engaging contact 14 is no longer released from the bus contact 2 and the outgoing contact 3, and power is cut off;

[0053] During this process, the moving seat 13 continuously moves backwards, and when the inclined surfaces of the contact blocks 35 on both sides contact the trigger block 32, the engaging contact 14 is completely separated from the busbar contact 2 and the outgoing contact 3, and then the push frame 26 moves forward under the action of the compression spring 4, and the baffles 6 on the upper and lower sides move relative to each other to achieve the closure and shielding of the contacts;

[0054] Then, the middle cabinet door 15 is opened, and the levers 25 on both sides are pressed down. During the downward movement of the levers 25, the limit release plate 23 moves out of the base 11, and the limits on both sides of the base 11 can be released. Then, the handle 55 is pulled, and the handle 55 drives the receiving plate 10 to move forward. At this time, the swing rod 51 and the moving pin 54 drive the moving rod 52 to move forward. The moving rod 52 pushes the base 11 forward, and the base 11 can be slightly pushed out of the cabinet body 1. At this time, the base 11 can be moved out, and the rack 47 drives the insulating plate 9 to gradually descend through the driving assembly until the rear structure is completely covered;

[0055] When the base 11 is completely moved out onto the receiving plate 10, the power-off assembly 4 and the interior can be repaired, providing a larger repair space;

[0056] After the maintenance is completed, the base 11 is placed in the cabinet 1. When the rack 47 contacts the spur gear 40, the insulating plate 9 rises and no longer blocks the base 11. Then, when the straight rod 36 contacts the base 11, it is driven by the base 11 to move backward and drive the locking pin 38 to disengage from the locking groove 58, thereby releasing the lock on the push frame 26. Then, the front end of the moving rod 52 contacts the base 11, and the moving rod 52 is driven to move backward under the action of the base 11. The swing rod 51 swings and drives the receiving plate 10 to move into the cabinet 1 through the toggle rod 49, thereby retracting the receiving plate 10. Then, when the base 11 is completely placed in the cabinet 1, the limit blocks 22 on both sides limit the base 11, thereby completing the fixation of the base 11.

[0057] Then close the cabinet door 15, the connection block enters the connection groove 17, and then rotate the connection plate 16 to drive the movable seat 13 to move backward. When the contact block 35 contacts the trigger block 32, it drives the push rod 29 to move backward, and the two baffles 6 move back to each other and no longer block the contacts. Then, after the engagement contact 14 is completely connected with the busbar contact 2 and the outgoing contact 3, stop rotating the lead screw 12, and power can be turned on to complete the maintenance. The specific embodiments described in this article are only examples of the spirit of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner.

Claims

1. An insulated high-voltage cabinet for a substation, comprising a cabinet body (1), characterized in that: The upper side of the cabinet (1) is fixedly connected with a plurality of bus contacts (2) evenly distributed along the left and right directions thereof; the lower side of the cabinet (1) is fixedly connected with a plurality of outgoing line contacts (3) corresponding one to one with the bus contacts (2); a power-off component (4) is provided in the middle of the cabinet (1); the power-off component (4) can be used to connect the bus contacts (2) and the outgoing line contacts (3); a shielding component (5) is provided on the rear side of the cabinet (1); baffles (6) are slidably connected to the upper and lower sides of the cabinet (1); the shielding component (5) can drive the two baffles (6) The cabinet (1) and the cabinet (1) are arranged to move relative to or opposite to each other. A fixing frame (7) located behind the power-off assembly (4) is fixedly connected inside the cabinet (1). A locking assembly (8) is provided in the middle of the fixing frame (7). The locking assembly (8) can lock the shielding assembly (5). An insulating plate (9) is slidably connected inside the cabinet (1). A driving assembly is provided on the left side of the cabinet (1). The driving assembly can drive the insulating plate (9) to move up and down. A receiving plate (10) that can move forward and backward is slidably connected to the middle of the cabinet (1). The receiving plate (10) is used to receive the power-off assembly (4).

2. The insulated high-voltage cabinet for a substation according to claim 1, characterized in that: The power-off assembly (4) comprises a base (11), a lead screw (12) being rotatably connected to the middle of the base (11), a movable seat (13) being slidably connected to the base (11), the movable seat (13) being threadedly connected to the lead screw (12), a plurality of U-shaped engagement contacts (14) being provided on the rear side of the movable seat (13), and the upper and lower sides of the engagement contacts (14) being respectively insertable into the busbar contacts (2) and the outgoing line contacts (3) on the corresponding sides thereof.

3. The insulated high-voltage cabinet for a substation according to claim 2, characterized in that: The cabinet body (1) is hingedly connected to a plurality of cabinet doors (15) evenly distributed in the vertical direction thereof at the front end thereof; a connecting plate (16) coaxial with the lead screw (12) is rotatably connected to the lower side of the cabinet door (15) in the middle; a connecting groove (17) is provided at the front end of the lead screw (12); a connecting pin (18) which can be inserted into the connecting groove (17) is fixedly connected to the rear end of the connecting plate (16); a torsion groove (19) is provided at the front end of the connecting plate (16); a guard plate (20) which can cover the connecting plate (16) is slidably connected to the lower side of the cabinet door (15); a lifting block is fixedly connected to the front end of the guard plate (20); the lifting block is slidably connected to the cabinet door (15); a compression spring is provided on the upper side of the guard plate (20) and is located between the guard plate (20) and the cabinet door (15).

4. The insulated high-voltage cabinet for a substation according to claim 2, characterized in that: The cabinet (1) is fixedly connected to the slide rails (21) on the left and right sides, respectively. The base (11) is slidably connected to the slide rails (21) on the left and right sides, respectively. The cabinet (1) is fixedly connected to the limit blocks (22) located in front of the corresponding side slide rails (21) on the left and right sides, respectively. The two limit blocks (22) are fixedly connected to the opposite ends thereof with two compression springs located between the limit blocks (22) and the cabinet (1). The left and right sides of the base (11) are slidably connected to the limit release plates (23) that can contact the corresponding side limit blocks (22). The front end of the limit release plates (23) is provided with an inclined groove (24). The left and right sides of the front end of the base (11) are slidably connected to the levers (25), respectively. The rear end of the levers (25) can be inserted into the inclined groove (24) on the corresponding side. The front end of the limit release plates (23) is provided with three compression springs located between the limit release plates (23) and the base (11).

5. The insulated high-voltage cabinet for a substation according to claim 1, characterized in that: The shielding assembly (5) comprises a U-shaped push frame (26), the push frame (26) being slidably connected to the cabinet (1), and a compression spring (24) being disposed between the push frame (26) and the cabinet (1) on the left and right sides of the push frame (26), and two driving grooves (27) which are opposed to each other in an eight-shaped shape are disposed on the left and right sides of the push frame (26), and a driving pin (28) is fixedly connected to the left and right sides of the baffle (6), and the driving pin (28) is located in the driving groove (27) on the corresponding side thereof.

6. The insulated high-voltage cabinet for a substation according to claim 5, characterized in that: The push frame (26) is fixedly connected to push rods (29) on the left and right sides respectively, a waist-shaped groove (30) is provided at the front end of the push rod (29), a connecting rod (31) is slidably connected in the waist-shaped groove (30), and a trigger block (32) is fixedly connected to one end of the connecting rod (31) close to the base (11). The cabinet (1) is fixedly connected to fixed blocks (33) on the left and right sides respectively, an L-shaped connecting groove (34) is provided on the fixing block (33), and the other end of the connecting rod (31) is located in the connecting groove (34) on the corresponding side. The base (11) is fixedly connected to contact blocks (35) on the left and right sides respectively, and the rear end of the contact block (35) is an inclined surface with an upper rear and a lower front, and the upper end of the trigger block (32) can contact the inclined surface of the contact block (35) on the corresponding side.

7. The insulated high-voltage cabinet for a substation according to claim 2, characterized in that: The locking assembly (8) comprises a straight rod (36), the front end of the straight rod (36) being contactable with the rear end of the base (11), the rear end of the straight rod (36) being provided with a compression spring 5 located between the straight rod (36) and the fixing frame (7), the rear side of the straight rod (36) being provided with an upper rear and lower front sliding groove (37), the fixing frame (7) being slidably connected with a locking pin (38), the lower end of the locking pin (38) being fixedly connected with a sliding pin (39) located in the sliding groove (37), and the lower end of the pushing frame (26) being provided with a locking groove (58), the locking pin (38) being insertable into the locking groove (58).

8. The insulated high-voltage cabinet for a substation according to claim 2, characterized in that: The driving assembly comprises a spur gear (40), a belt pulley (41) being fixedly connected to a rear end of the spur gear (40), the belt pulley (41) being rotatably connected to a cabinet (1), a belt pulley (42) being arranged directly behind the belt pulley (41), the belt pulley (42) being rotatably connected to the cabinet (1), the belt pulley (41) and the belt pulley (42) being connected via a belt (43), a bevel gear (44) being fixedly connected to the left end of the belt pulley (42), a screw rod (45) being rotatably connected to the left side of the cabinet (1), the screw rod (45) being threadedly connected to an insulating plate (9), a helical gear (46) meshing with the bevel gear (44) being fixedly connected to the lower end of the screw rod (45), and a rack (47) being meshing with the spur gear (40) being fixedly connected to the left side of the base (11).

9. The insulated high-voltage cabinet for a substation according to claim 2, characterized in that: The receiving plate (10) is provided with a toggle groove (48) at the rear side of the lower end, a toggle rod (49) is rotatably connected to the right side of the cabinet (1), a toggle pin (50) located in the toggle groove (48) is fixedly connected to the upper left end of the toggle rod (49), an L-shaped swing rod (51) is fixedly connected to the upper right end of the toggle rod (49), an L-shaped moving rod (52) is slidably connected in the fixed frame (7), the front end of the moving rod (52) can contact the rear end of the base (11), a moving groove (53) is provided at the rear side of the moving rod (52), a moving pin (54) located in the moving groove (53) is fixedly connected to the upper left end of the swing rod (51), and a handle (55) is fixedly connected to the front end of the receiving plate (10).

10. The insulated high-voltage cabinet for a substation according to claim 1, characterized in that: The cabinet body (1) has an L-shaped cover plate (56) hingedly connected to the upper end thereof, a fixing pin hingedly connected to the rear end thereof, an arc-shaped fixing groove provided at the rear end thereof, the fixing pin being insertable into the fixing groove, a base being fixedly connected to the lower end thereof, and a heat dissipation net (57) being fixedly connected to the front ends of the two cabinet doors (15) at the middle portion and the lower side thereof.

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