Internal visual ring main unit gas tank for smart power grid

Abstract

The invention relates to the technical field of power equipment, and particularly discloses an internal visual ring main unit gas tank for an intelligent power grid, which comprises vacuum switches and opening and closing mechanisms, the number of the opening and closing mechanisms is in one-to-one correspondence with the number of the vacuum switches, and a gas guide mechanism for conveying insulating gas into the cabinet gas tank is arranged in a bottom box. According to the invention, through the cooperation of the gas guide mechanism and the switching-on and switching-off mechanism, the waste of the insulating gas caused by the fact that the insulating gas in the cabinet gas box needs to be pumped out or the box door of the cabinet gas box needs to be directly opened before switching-on and switching-off each time is avoided; the cabinet gas box is simple in structure and convenient to operate after being actually put into use, discharges insulating gas to the vacuum switch in the opening and closing process, has excellent dielectric strength and arc extinguishing performance, and can effectively prevent faults such as internal short circuit and arc breakdown, thereby improving the stability in the opening and closing process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to an internal visualization ring main unit gas tank for smart grid. BACKGROUND

[0002] The essence of smart grid is to realize the observability, measurability and controllability of power grid operation through the deep integration of information communication technology and power system. The internal visualization of the ring main unit gas tank is to transform the originally closed "black box" equipment into an intelligent node with transparent state, data collection and fault judgment, which meets the technical requirements of the device level of smart grid. The existing ring main unit gas tank realizes real-time visualization of the opening and closing state of vacuum switch and the action process of mechanical transmission components by installing a miniature camera, a fiber window or transparent insulating materials, which significantly improves the efficiency of on-site judgment.

[0003] Patent application No. CN115000866B discloses a ring main unit, which can open and close the multi-station switch through the cooperation of the input shaft and the hinge mechanism.

[0004] In summary, the existing technology has the following problems: The existing visualization ring main unit gas tank is usually filled with insulating gas in actual use, which has excellent dielectric strength and arc extinguishing performance, and can effectively prevent internal short circuit, arc breakdown and other faults. Under the premise of filling the visualization ring main unit gas tank with insulating gas, the opening and closing operation of the internal switch needs to be carried out first. If the visualization ring main unit gas tank door is opened directly, the insulating gas will leak, causing waste of insulating gas. After opening the door, the opening and closing operation is carried out without the protection of insulating gas, which reduces the safety of opening and closing. Therefore, it is necessary to set up a mechanism in the visualization ring main unit gas tank that can open and close the switch inside the visualization ring main unit gas tank without opening the visualization ring main unit gas tank door. The existing visualization ring main unit gas tank has a mechanism for automatically opening and closing the switch, such as the above-mentioned application. Although it can automatically open and close, it is connected with the movable contact of the switch through the cooperation of the input shaft and the hinge mechanism to open and close. It cannot only open and close one switch, and the input shaft is a rigid structure, which is not convenient to set up flexibly according to the layout of the switch. In addition, the temperature generated by the switch operation makes the insulating gas around it flow to other places, resulting in a lower density of insulating gas around the switch, which reduces the safety of opening and closing. There are some deficiencies. In order to solve the above problems, a visualization ring main unit gas tank for smart grid is proposed. SUMMARY

[0005] In order to achieve the above object, the application is implemented by the following technical solutions: a ring network cabinet gas tank for internal visualization of a smart grid, comprising a bottom tank, a cabinet gas tank fixedly arranged on the top of the bottom tank, and a visualization window arranged on the door of the cabinet gas tank, further comprising: A partition plate is fixedly arranged on the inner side wall of the cabinet gas tank and is arranged in an upper and lower spaced manner, the top of the partition plate is provided with vacuum switches and opening and closing mechanisms arranged in a spaced manner, the number of the opening and closing mechanisms and the vacuum switches are one-to-one corresponding, the inside of the bottom tank is provided with a gas guiding mechanism for conveying insulating gas into the cabinet gas tank, and the gas guiding mechanism cooperates with the opening and closing mechanism for adjusting the on-off of the vacuum switch, the opening and closing mechanism comprises: A cylinder body is fixedly arranged on the top of the partition plate, the inner side wall of the cylinder body is sleeved with a piston ring, the inner wall of the piston ring is rotatably provided with a gas guiding cylinder, and the outer wall of the gas guiding cylinder is provided with a first auxiliary assembly at the upper end; A rod body is rotatably arranged on the inner wall of the gas guiding cylinder, the top of the rod body and the top of the gas guiding cylinder extend to the top of the cylinder body, and the top of the rod body extends to the top of the gas guiding cylinder, the top of the rod body is provided with a second auxiliary assembly, the top of the second auxiliary assembly is provided with a bent rod, and the top of the bent rod is fixedly provided with a rubber rod.

[0006] Further, the opening and closing mechanism further comprises: A fixing member is fixedly arranged on the inner side wall of the cylinder body and located at the bottom of the piston ring, the side of the fixing member close to each other is fixedly provided with a fixing ring, and the inner wall of the fixing ring is fixedly sleeved with a fixing cylinder; A limiting groove is arranged on the inner wall of the fixing cylinder, the outer surface of the lower end of the gas guiding cylinder is fixedly provided with a limiting rod, and the end of the limiting rod away from the gas guiding cylinder extends into the limiting groove, so that the gas guiding cylinder can rotate in the process of being lifted by the piston ring, the end of the gas guiding cylinder located in the cylinder body is sleeved with a first spring on the outer wall, and the first spring is located at the top of the piston ring.

[0007] Further, the opening and closing mechanism further comprises: An annular sliding block is fixedly sleeved on the side wall of the rod body and arranged in a spaced manner, the inner wall of the gas guiding cylinder is provided with annular sliding grooves arranged in a spaced manner, the annular sliding block is placed in the annular sliding groove, so that the rod body is rotatably connected with the gas guiding cylinder, and the upper end and the lower end of the side wall of the rod body and the upper end and the lower end of the inner wall of the gas guiding cylinder are all designed as dynamic sealing; A spline shaft is fixedly arranged on the bottom of the rod body and penetrates the bottom of the cylinder body, for limiting the rotation of the rod body while limiting the rotation of the rod body, and the bottom of the cylinder body and the side wall of the spline shaft are designed as dynamic sealing.

[0008] Further, the opening and closing mechanism further comprises: A gas guiding cavity is arranged in the inner side wall of the gas guiding cylinder, and the bottom of the gas guiding cylinder is provided with first gas guiding holes arranged in an annular array; Second air guide holes are arranged in an annular array on the upper end of the outer wall of the air guide cylinder, and the second air guide holes and the first air guide hole are in communication with the air guide cavity.

[0009] Further, the first auxiliary assembly comprises: A shell is sleeved on the side wall of the rod body at the top of the air guide cylinder, and the bottom of the shell is designed in an open manner. The inner side wall of the shell is attached to the upper end of the outer wall of the air guide cylinder, so that the second air guide hole is blocked by the shell after entering the shell from the upper end of the outer wall of the air guide cylinder. The end of the rod body in the shell is sleeved with a second spring, and the upper end and the lower end of the inner side wall of the shell are fixedly sleeved with a first sealing ring.

[0010] Further, the first auxiliary assembly further comprises: A first limiting plate is fixedly arranged on the top of the cylinder body and extends to the upper end of the vacuum switch. A second limiting plate is fixedly arranged on the top of the first limiting plate and is designed in a Y shape, so that the rubber rod and the bent rod can move along the inner side of the second limiting plate while resisting the shell.

[0011] Further, the second auxiliary assembly comprises: A sliding seat is fixedly arranged on the top of the rod body, and a first sliding groove is arranged on the top of the sliding seat. A first sliding block is arranged in the first sliding groove, and the top of the first sliding block is fixedly connected with the bottom of the bent rod. A connecting rod is fixedly arranged on the side of the bent rod away from the rubber rod. A connecting ring is fixedly sleeved on the side wall of the rubber rod, and a third spring is sleeved on the side wall of the connecting rod, which is located between the connecting ring and the bent rod. A connecting seat is fixedly arranged on the top of the sliding seat and sleeved on the side wall of the connecting rod.

[0012] Further, the second auxiliary assembly further comprises: A guide plate is fixedly arranged on the side of the first limiting plate close to the rubber rod. A vertical surface and an inclined surface are arranged on the side of the guide plate close to the rubber rod. Two inclined surfaces are arranged on the top and bottom of the vertical surface, respectively. The connection between the vertical surface and the inclined surface is smooth. The side of the connecting rod close to the vertical surface is designed in an arc shape.

[0013] Further, the center axes of the cylinder body, the piston ring, the air guide cylinder, the fixed cylinder, the rod body and the shell coincide. The top and bottom of the rubber rod are designed in an inclined manner, and can be bent after abutting against the moving contact of the vacuum switch.

[0014] Further, the air guide mechanism comprises: The pump body is fixedly arranged at the bottom of the inner wall of the bottom box, the exhaust end of the pump body is fixedly arranged with the first guide pipe, the first exhaust end of the first guide pipe is fixedly arranged with the second guide pipe, the exhaust end of the second guide pipe and the second exhaust end of the first guide pipe are fixedly arranged with the third guide pipe, the exhaust end of the two third guide pipes is fixedly arranged with the fourth guide pipe, the exhaust end of the fourth guide pipe extends into the cylinder body, the third exhaust end of the first guide pipe is fixedly arranged with the fifth guide pipe, the fifth guide pipe is provided with two, the exhaust end of the two fifth guide pipes extends into the cabinet gas tank, and the outer walls of the first guide pipe, the second guide pipe, the third guide pipe, the fourth guide pipe and the fifth guide pipe are all provided with valve bodies.

[0015] The application provides a ring network cabinet gas tank for internal visualization of a smart grid. 1、The application cooperates the gas guide mechanism and the opening and closing mechanism, without needing to extract the insulation gas in the cabinet gas tank or directly opening the cabinet door of the cabinet gas tank before each opening and closing, so that the insulation gas is not wasted, the actual use of the cabinet gas tank is facilitated, and the like, and the insulation gas is discharged to the vacuum switch during the opening and closing process, so that the dielectric strength and arc extinguishing performance are excellent, internal short circuit, arc breakdown and the like can be effectively prevented, and the stability during the opening and closing process is improved.

[0016] 2、The second gas guide hole corresponds to plugging or unplugging during the lifting of the rod body, so that the insulation gas is discharged to the vacuum switch during the opening and closing process, the safety of the opening and closing is improved, the problem that the insulation gas near the moving contact of the vacuum switch flows to other places due to the heat generated by the vacuum switch during normal operation, so that the density of the insulation gas around the vacuum switch during the opening and closing process is not enough, and the safety of the opening and closing is reduced, and the safety of the opening and closing can be effectively improved.

[0017] 3、The rod body can be vertically moved along the corresponding position of the vacuum switch, and the gas guide cylinder can be rotated during the lifting under the action of the limiting groove and the limiting rod, so that the uniformity of the insulation gas discharged to the vacuum switch is improved, and the stability of the opening and closing is further improved. The first auxiliary assembly and the gas guide mechanism cooperate to maintain stable air pressure in the cylinder body and the gas guide cylinder, so that the rubber rod is always located at the top of the moving contact of the vacuum switch, and the opening operation of the vacuum switch is facilitated.

[0018] 4、The insulation gas drives the piston ring and the rubber rod to lift, so as to open and close the vacuum switch, the vacuum switch can be arranged according to the position, compared with the traditional method of driving multiple pull rods connected with the moving contact by a transmission shaft to open and close, the layout is more flexible, and after the opening and closing, the rubber rod does not contact the moving contact of the vacuum switch, so that the opening and closing of the vacuum switch is not affected when the circuit is abnormal. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The overall structure of the present application is shown in the schematic diagram. Figure 2 The opening structure of the cabinet gas tank and the bottom tank of the present application is shown in the schematic diagram. Figure 3 The structure of the vacuum switch, opening and closing mechanism, partition and air guide mechanism of the present application is shown in the schematic diagram. Figure 4 The structure of the air guide mechanism and opening and closing mechanism of the present application is shown in the schematic diagram. Figure 5 The structure of the air guide mechanism of the present application is shown in the schematic diagram. Figure 6 The structure of the vacuum switch and opening and closing mechanism of the present application is shown in the schematic diagram. Figure 7 The longitudinal section structure of the cylinder of the present application is shown in the schematic diagram. Figure 8 The longitudinal section structure of the cylinder in the vertical direction of the present application is shown in the schematic diagram. Figure 7 Figure 9 The longitudinal section structure of the fixed ring, fixed cylinder and piston ring of the present application is shown in the schematic diagram. Figure 10 The structure of the air guide cavity, rotating part, first air guide hole, air guide cylinder and second air guide hole of the present application is shown in the schematic diagram. Figure 11 The structure of the limiting groove, fixed cylinder and limiting rod of the present application is shown in the schematic diagram. Figure 12 The enlarged structure of A in the present application is shown in the schematic diagram. Figure 11 The structure of the guide plate and first limiting plate of the present application is shown in the schematic diagram. Figure 13 The structure of the second auxiliary assembly of the present application is shown in the schematic diagram. Figure 14 The enlarged structure of B in the present application is shown in the schematic diagram. Figure 15 Figure 14 The enlarged structure of B in the present application is shown in the schematic diagram.

[0020] The reference signs involved in the above-mentioned drawings: 1, cabinet gas tank; 2, visual window; 3, bottom tank; 4, partition; 5, vacuum switch; 6, opening and closing mechanism; 7, air guide mechanism; 61, cylinder; 62, first auxiliary assembly; 63, second auxiliary assembly; 64, rubber rod; 65, air guide cylinder; 66, piston ring; 67, fixed cylinder; 68, spline shaft; 69, fixed ring; 691, fixed part; 692, limiting rod; 693, limiting groove; 694, annular sliding block; 695, rod body; 696, bent rod; 697, second air guide hole; 698, first air guide hole; 699, air guide cavity; ​​621, shell; 622, first limiting plate; 623, second limiting plate; 631, guide plate; 632, inclined surface; 633, vertical surface; 634, sliding seat; 635, connecting seat; 636, connecting rod; 637, connecting ring; 638, first sliding groove; 71, third conduit; 72, fourth conduit; 73, second conduit; 74, fifth conduit; 75, pump body; 76, first conduit. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Embodiment one, please refer to Figures 1-3 , Figure 6 and Figure 7 , a ring network cabinet gas tank for internal visualization of smart grid, comprising a bottom tank 3, a cabinet gas tank 1 fixedly arranged on the top of the bottom tank 3, and a visualization window 2 opened in the tank door of the cabinet gas tank 1, further comprising: a partition plate 4 fixedly arranged on the inner side wall of the cabinet gas tank 1 and arranged in an upper and lower spaced manner, the top of the partition plate 4 is provided with vacuum switches 5 and opening and closing mechanisms 6 arranged in a spaced manner, the number of the opening and closing mechanisms 6 and the vacuum switches 5 are one-to-one corresponding, the inside of the bottom tank 3 is provided with a gas guiding mechanism 7 for conveying insulating gas into the cabinet gas tank 1, and the gas guiding mechanism 7 cooperates with the opening and closing mechanism 6 for adjusting the on-off of the vacuum switch 5, the opening and closing mechanism 6 comprises: a cylinder body 61 fixedly arranged on the top of the partition plate 4, the inner side wall of the cylinder body 61 is sleeved with a piston ring 66, the inner wall of the piston ring 66 is rotatably provided with a gas guiding cylinder 65, and the outer wall of the gas guiding cylinder 65 is provided with a first auxiliary assembly 62 at the upper end; a rod body 695 rotatably arranged on the inner wall of the gas guiding cylinder 65, the top of the rod body 695 and the top of the gas guiding cylinder 65 both extend to the top of the cylinder body 61, and the top of the rod body 695 extends to the top of the gas guiding cylinder 65, the top of the rod body 695 is provided with a second auxiliary assembly 63, the top of the second auxiliary assembly 63 is provided with a bent rod 696, and the top of the bent rod 696 is fixedly provided with a rubber rod 64.

[0023] In the implementation of the present application, the opening and closing mechanism 6 and the air guide mechanism 7 can open and close the vacuum switch 5 without opening the cabinet air tank 1, so the cabinet air tank 1 door does not need to be opened before each opening and closing, and the insulation gas in the cabinet air tank 1 does not need to be pumped out or directly opened before each opening and closing, thereby avoiding the waste of insulation gas caused by opening the cabinet air tank 1 door, improving the convenience of operation after the cabinet air tank 1 is actually put into use, and making the interior of the cabinet air tank 1 always filled with insulation gas, which has excellent dielectric strength and arc extinguishing performance, thereby effectively preventing internal short circuit, arc breakdown and other faults, and improving the stability during opening and closing.

[0024] The visual window 2 facilitates the observation of the internal situation of the cabinet air tank 1 by the staff, thereby facilitating subsequent operation.

[0025] Please refer to Figures 6-11 , the opening and closing mechanism 6 further comprises: The fixed part 691 is fixed to the inner side wall of the cylinder body 61 and located at the bottom of the piston ring 66, and the side close to each other of the fixed part 691 is fixedly provided with a fixed ring 69, and the inner wall of the fixed ring 69 is fixedly provided with a fixed cylinder 67; The limiting groove 693 is opened in the inner wall of the fixed cylinder 67, and the outer surface of the air guide cylinder 65 is fixedly provided with a limiting rod 692, and the end of the limiting rod 692 away from the air guide cylinder 65 extends into the limiting groove 693, so that the air guide cylinder 65 can rotate in the process of being lifted by the piston ring 66, and the outer wall of one end of the air guide cylinder 65 located in the cylinder body 61 is sleeved with a first spring, and the first spring is located at the top of the piston ring 66.

[0026] The opening and closing mechanism 6 further comprises: The annular sliding block 694 is fixedly sleeved on the side wall of the rod body 695 and is arranged in a spaced manner, and the inner wall of the air guide cylinder 65 is provided with a plurality of annular sliding grooves arranged in a spaced manner, and the annular sliding block 694 is placed in the annular sliding groove, so that the rod body 695 is rotatably connected with the air guide cylinder 65, and the upper end and the lower end of the side wall of the rod body 695 and the upper end and the lower end of the inner wall of the air guide cylinder 65 are all designed as dynamic sealing; The spline shaft 68 is fixedly arranged at the bottom of the rod body 695 and penetrates the bottom of the cylinder body 61, and is used for limiting the rotation of the rod body 695 while limiting the rotation of the rod body 695, and the bottom of the cylinder body 61 and the side wall of the spline shaft 68 are designed as dynamic sealing.

[0027] The opening and closing mechanism 6 further comprises: The air guide cavity 699 is opened in the inner wall of the side wall of the air guide cylinder 65, and the bottom of the air guide cylinder 65 is provided with a plurality of first air guide holes 698 arranged in a circular array; The second air guide hole 697 is arranged in an annular array on the outer wall of the air guide cylinder 65, and is in communication with the air guide cavity 699.

[0028] In the specific implementation, when it is needed to close the vacuum switch 5, the insulating gas is delivered into the cylinder body 61 through the air guide mechanism 7, and the insulating gas is located at the bottom of the piston ring 66. As the insulating gas at the bottom of the piston ring 66 gradually increases, part of the insulating gas pushes the piston ring 66 to move upwards along the inner side wall of the cylinder body 61, thereby driving the air guide cylinder 65 and the rod body 695 to move upwards, so as to drive the second auxiliary assembly 63, the bent rod 696 and the rubber rod 64 to move upwards. As the rubber rod 64 continuously moves upwards, the top of the rubber rod 64 contacts the bottom of the moving contact of the vacuum switch 5 and pushes the moving contact to move upwards, thereby closing the vacuum switch 5. In the process of pushing the piston ring 66 to move upwards, part of the insulating gas enters the air guide cavity 699 through the first air guide hole 698, and is discharged through the air guide cavity 699 and the second air guide hole 697, so as to discharge the insulating gas to the moving contact of the vacuum switch 5 in the process of closing, thereby protecting the closing of the vacuum switch 5 by the insulating gas and improving the safety of the closing. After the closing is completed, the piston ring 66 continues to move upwards until the second air guide hole 697 is blocked under the cooperation of the first auxiliary assembly 62, so as to limit the leakage of the insulating gas, so that the piston ring 66 and the rubber rod 64 can be stably supported by the insulating gas. At this time, the rubber rod 64 is located at the top of the moving contact of the vacuum switch 5. When it is needed to open the switch, the insulating gas in the cylinder body 61 is slowly discharged through the air guide mechanism 7, so that the rubber rod 64 moves downwards under the action of the first spring, thereby pulling down the moving contact of the vacuum switch 5 to open the switch. In the process of opening, the rubber rod 64 continuously descends, and the second air guide hole 697 is unblocked under the action of the first auxiliary assembly 62, so that part of the insulating gas can be discharged to the vacuum switch 5, so as to discharge the insulating gas to the vacuum switch 5 in the process of opening, thereby improving the safety of opening and closing. Since the vacuum switch 5 carries a load current in normal operation, the resistance in the conductive circuit (especially the contact resistance) will cause energy loss in the form of heat, and the heat will cause the insulating gas near the moving contact of the vacuum switch 5 to flow to other places, thereby reducing the density of the insulating gas at the vacuum switch 5. Therefore, in the process of opening and closing, the insulating gas is delivered to the vicinity of the moving contact of the vacuum switch 5, which can effectively improve the safety of opening and closing.

[0029] By rotatingly connecting the air guide cylinder 65 with the piston ring 66, and rotatingly connecting the air guide cylinder 65 with the rod body 695, and limiting the rotation of the rod body 695 through the spline shaft 68, the rod body 695 can be vertically moved along the corresponding position of the vacuum switch 5, and under the action of the limiting groove 693 and the limiting rod 692, the air guide cylinder 65 can rotate during the lifting process, thereby increasing the uniformity of the discharge of the insulating gas to the vacuum switch 5, and further improving the stability of the opening and closing of the gate.

[0030] By lifting the piston ring 66 and the rubber rod 64 through the gas, the vacuum switch 5 is opened and closed, which is convenient for arranging according to the position of the vacuum switch 5. Compared with the traditional synchronous driving of multiple pull rods connected with the moving contact through a transmission shaft, the layout is more flexible, and after opening and closing, it is not in contact with the moving contact of the vacuum switch 5, so as not to affect the opening and closing of the vacuum switch 5 when the circuit is abnormal.

[0031] Please refer to Figure 7 、 Figure 11 and Figure 12 , the first auxiliary assembly 62 comprises: The shell 621 is sleeved on the side wall of one end of the rod body 695 located at the top of the air guide cylinder 65, and the bottom of the shell 621 is designed as an open type. The inner side wall of the shell 621 is in close contact with the upper end of the outer wall of the air guide cylinder 65, so that after the upper end of the outer wall of the air guide cylinder 65 enters the shell 621, the second air guide hole 697 is blocked by the shell 621. The one end of the rod body 695 located in the shell 621 is sleeved with a second spring, and the upper end and the lower end of the inner side wall of the shell 621 are both fixedly sleeved with a first sealing ring.

[0032] The first auxiliary assembly 62 further comprises: The first limiting plate 622 is fixedly arranged at the top of the cylinder body 61 and extends to the upper end of the vacuum switch 5. The second limiting plate 623 is fixedly arranged at the top of the first limiting plate 622 and is designed in a Y shape, so that the rubber rod 64 and the bent rod 696 can move along the inner side of the second limiting plate 623 while resisting the shell 621.

[0033] In the specific implementation, when the vacuum switch 5 is closed, the piston ring 66 and the rubber rod 64 continue to move upwards, in the process, the rubber rod 64, the bent rod 696 and the second auxiliary assembly 63 pass through the inner side of the second limiting plate 623, at the same time, the second limiting plate 623 extrudes the top of the shell 621, so that the shell 621 moves downwards against the elastic force of the second spring, and the inner side wall of the shell 621 is sleeved on the outer wall of the gas guide cylinder 65, so as to block the second gas guide hole 697, thereby preventing the insulating gas from leaking from the second gas guide hole 697, and the insulating gas can be accumulated in the cylinder body 61 and the gas guide cylinder 65, so that the cylinder body 61 and the gas guide cylinder 65 maintain stable air pressure under the cooperation of the gas guide mechanism 7, and the rubber rod 64 is always located on the top of the moving contact of the vacuum switch 5, so as to facilitate the opening operation of the vacuum switch 5.

[0034] When the opening operation is performed, with the continuous downward movement of the piston ring 66, the rod body 695 and the gas guide cylinder 65, the extrusion force of the second limiting plate 623 on the shell 621 is smaller and smaller, and under the action of the second spring, the shell 621 moves upwards to move away from the outer wall of the second gas guide hole 697, so that the insulating gas in the gas guide cylinder 65 can be discharged to the vacuum switch 5 along the second gas guide hole 697, so as to discharge the insulating gas to the vacuum switch 5 during the opening operation, thereby improving the safety of the opening operation.

[0035] Please refer to Figures 13-15 , the second auxiliary assembly 63 comprises: The sliding seat 634 is fixedly arranged on the top of the rod body 695, and the top of the sliding seat 634 is provided with a first sliding groove 638, and the first sliding groove 638 is internally provided with a first sliding block, and the top of the first sliding block is fixedly connected with the bottom of the bent rod 696. The connecting rod 636 is fixedly arranged on the side, away from the rubber rod 64, of the bent rod 696, the side wall of the rubber rod 64 is fixedly sleeved with a connecting ring 637, the side wall of the connecting rod 636 is sleeved with a third spring, and the third spring is located between the connecting ring 637 and the bent rod 696. The connecting seat 635 is fixedly arranged on the top of the sliding seat 634 and sleeved on the side wall of the connecting rod 636.

[0036] The second auxiliary assembly 63 further comprises: The guide plate 631 is fixedly arranged on the side, close to the rubber rod 64, of the first limiting plate 622, the side, close to the rubber rod 64, of the guide plate 631 is provided with a vertical face 633 and an inclined face 632, the inclined face 632 is provided with two, and is located at the top and the bottom of the vertical face 633 respectively, and the junction of the vertical face 633 and the inclined face 632 is smoothly connected, and the side, close to the vertical face 633, of the connecting rod 636 is arc-shaped.

[0037] The center axes of the cylinder 61, the piston ring 66, the air guide cylinder 65, the fixed cylinder 67, the rod body 695 and the shell 621 coincide; The top and bottom of the rubber rod 64 are designed to be inclined, and can be bent after abutting against the movable contact of the vacuum switch 5.

[0038] In the specific implementation, the bent rod 696 and the rubber rod 64 are slidably connected to the top of the rod body 695 through the first sliding groove 638 and the first sliding block, so that the bent rod 696 and the rubber rod 64 can move in the radial direction of the rod body 695. When the rubber rod 64 moves upward to approach the movable contact, the rubber rod 64 moves away from the movable contact under the action of the inclined surface 632 and the third spring. As the rubber rod 64 continues to move upward, the connecting rod 636 is attached to the vertical surface 633, so that the connecting rod 636 and the connecting ring 637 approach the movable contact of the vacuum switch 5 to overcome the elastic force of the third spring, so that the rubber rod 64 stably moves upward from the bottom of the rubber rod 64 and pushes the movable contact of the vacuum switch 5 to rotate upward to close the switch. After the closing is completed, the rubber rod 64 cannot continue to drive the movable contact to rotate upward, the rubber rod 64 is bent, and the connecting rod 636 enters the inclined surface 632 at the top of the vertical surface 633. Under the action of the third spring, the rubber rod 64 moves away from the movable contact, so as not to contact the movable contact of the vacuum switch 5 after the closing is completed, so as to avoid affecting the opening of the vacuum switch 5 in the circuit air field.

[0039] When opening, the rubber rod 64 moves downward, and the corresponding operation of the closing is not repeated here.

[0040] Embodiment two, please refer to Figure 4 and Figure 5 The difference between the technical scheme of the embodiment and the embodiment one is that the air guide mechanism 7 comprises: The pump body 75 is fixedly arranged at the inner wall bottom of the bottom box 3. The exhaust end of the pump body 75 is fixedly provided with the first conduit 76. The first exhaust end of the first conduit 76 is fixedly provided with the second conduit 73. The exhaust end of the second conduit 73 and the second exhaust end of the first conduit 76 are both fixedly provided with the third conduit 71. The plurality of exhaust ends of the two third conduits 71 are both fixedly provided with the fourth conduit 72. The exhaust end of the fourth conduit 72 extends into the cylinder 61. The third exhaust end of the first conduit 76 is fixedly provided with the fifth conduit 74. The fifth conduit 74 is provided with two. The exhaust end of the two fifth conduits 74 both extends into the cabinet air tank 1. The outer wall of the first conduit 76, the second conduit 73, the third conduit, the fourth conduit 72 and the fifth conduit 74 is provided with a valve body.

[0041] In practical implementation, an insulating gas pipeline is connected to the air inlet of the pump body 75. The pump body 75 then discharges the insulating gas into the first conduit 76, then into the second conduit 73, and finally into two third conduits 71. The third conduits 71 then discharge the gas into the cylinder 61, thus supplying insulating gas to the cylinder 61 corresponding to the vacuum circuit breaker that needs to be opened or closed. This works in conjunction with the opening / closing mechanism 6 to open and close the vacuum switch 5 at the designated location. When it is necessary to discharge the insulating gas from the cylinder 61, the gas enters the second conduit 73 or the first conduit 76 via the fourth conduit 72, then the fifth conduit 74 via the first conduit 76, and finally into the gas chamber 1 via the fifth conduit 74. This process facilitates the opening and closing of the circuit breaker while simultaneously discharging the insulating gas into the gas chamber 1, preventing waste of the insulating gas.

[0042] The valve body on the outer wall of the first conduit 76, the second conduit 73, the third conduit 71, the fourth conduit 72 and the fifth conduit 74 facilitates the control of the flow direction of insulating gas, thereby facilitating the delivery of insulating gas to one of the cylinders 61 individually, so as to facilitate opening and closing the valve according to the actual situation. The specific design of the valve body is existing technology and will not be described in detail here.

[0043] Two third conduits 71 supply gas to the two rows of opening and closing mechanisms 6 along the height of the gas chamber 1, respectively, for ease of operation. The specific layout of the insulating gas pipelines can be designed according to the layout of the vacuum switch 5, and is not limited here. Using insulating gas to open and close the vacuum switch 5 facilitates design based on the layout of the vacuum switch 5, improves flexibility, and allows for the independent opening and closing of a single vacuum switch 5, thus improving practicality. Furthermore, the pump body 75 and valve body are housed within the base box 3, avoiding the design of electronic components within the gas chamber 1. This prevents additional electronic component malfunctions from causing safety accidents within the gas chamber 1, thereby improving safety.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0046] 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 ring network gas box for internal visualization in smart grids, comprising a base box, a gas box fixedly mounted on top of the base box, and a visualization window opened in the gas box door, characterized in that, Also includes: A partition is fixed to the inner wall of the gas-insulating box and arranged at intervals. Each partition has a vacuum switch and an opening / closing mechanism arranged at intervals on its top. The number of opening / closing mechanisms and vacuum switches corresponds one-to-one. The bottom box contains a gas guiding mechanism for supplying insulating gas into the gas-insulating box. This gas guiding mechanism and the opening / closing mechanism work together to adjust the on / off state of the vacuum switches. The opening / closing mechanism includes: The cylinder body is fixedly mounted on the top of the partition plate. A piston ring is fitted on the inner wall of the cylinder body. An air guide tube is rotatably mounted on the inner wall of the piston ring. A first auxiliary component is mounted on the upper end of the outer wall of the air guide tube. The rod is rotatably mounted on the inner wall of the air guide cylinder. The top of both the rod and the air guide cylinder extend to the top of the cylinder body, and the top of the rod extends to the top of the air guide cylinder. A second auxiliary component is provided at the top of the rod, and a bent rod is provided at the top of the second auxiliary component. A rubber rod is fixedly provided at the top of the bent rod.

2. The ring main unit gas box for internal visualization in smart grids according to claim 1, characterized in that, The opening and closing mechanism also includes: The fixing component is fixedly installed on the inner wall of the cylinder body and located at the bottom of the piston ring. A fixing ring is fixedly installed on the side of the fixing component that is close to each other, and a fixing sleeve is fixedly sleeved on the inner wall of the fixing ring. A limiting groove is formed on the inner wall of the fixed cylinder. A limiting rod is fixedly provided at the lower end of the outer surface of the air guide cylinder. The end of the limiting rod away from the air guide cylinder extends into the limiting groove so that the air guide cylinder can rotate during the process of the piston ring driving the air guide cylinder to rise and fall. A first spring is sleeved on the outer wall of the end of the air guide cylinder located in the cylinder body. The first spring is located at the top of the piston ring.

3. A ring main unit gas box for internal visualization in smart grids according to claim 2, characterized in that, The opening and closing mechanism also includes: An annular slider is fixedly sleeved on the side wall of the rod and arranged at intervals. The inner wall of the air guide cylinder is provided with annular grooves arranged at intervals. The annular slider is placed in the annular grooves so that the rod and the air guide cylinder are rotatably connected. The upper and lower ends of the side wall of the rod and the upper and lower ends of the inner wall of the air guide cylinder are both designed with dynamic sealing. The spline shaft is fixed at the bottom of the rod and extends through the bottom of the cylinder. It is used to limit the rod's position and restrict its rotation. The bottom of the cylinder and the side wall of the spline shaft are designed with a dynamic seal.

4. A ring main unit gas box for internal visualization in smart grids according to claim 3, characterized in that, The opening and closing mechanism also includes: An air-guiding cavity is formed inside the side wall of the air-guiding cylinder, and the bottom of the air-guiding cylinder has a first air-guiding hole arranged in a ring array. The second air guide hole is located on the upper part of the outer wall of the air guide cylinder and is arranged in a ring array. Both the second air guide hole and the first air guide hole are connected to the air guide cavity.

5. A ring main unit gas box for internal visualization in smart grids according to claim 4, characterized in that, The first auxiliary component includes: The housing is fitted onto the side wall of the rod located at the top of the air guide cylinder, and the bottom of the housing is designed to be open. The inner side wall of the housing is fitted to the upper end of the outer wall of the air guide cylinder so that after the upper end of the outer wall of the air guide cylinder enters into the housing, the housing can block the second air guide hole. The side wall of the rod located inside the housing is fitted with a second spring. The upper end and the lower end of the inner side wall of the housing are both fixedly fitted with a first sealing ring.

6. A ring main unit gas box for internal visualization in smart grids according to claim 5, characterized in that, The first auxiliary component also includes: The first limiting plate is fixedly installed on the top of the cylinder and extends to the upper end of the vacuum switch; The second limiting plate is fixed on top of the first limiting plate and is Y-shaped so that the rubber rod and the bent rod can move along the inner side of the second limiting plate while blocking the housing.

7. A ring main unit gas box for internal visualization in smart grids according to claim 6, characterized in that, The second auxiliary component includes: A sliding seat is fixedly mounted on the top of the rod. A first sliding groove is provided on the top of the sliding seat, and a first sliding block is placed inside the first sliding groove. The top of the first sliding block is fixedly connected to the bottom of the bent rod. A connecting rod is fixedly installed on the side of the bent rod away from the rubber rod. A connecting ring is fixedly sleeved on the side wall of the rubber rod, and a third spring is sleeved on the side wall of the connecting rod. The third spring is located between the connecting ring and the bent rod. The connecting seat is fixedly mounted on the top of the sliding seat and sleeved on the side wall of the connecting rod.

8. A ring main unit gas box for internal visualization in smart grids according to claim 7, characterized in that, The second auxiliary component also includes: The guide plate is fixedly installed on the side of the first limiting plate near the rubber rod. The side of the guide plate near the rubber rod has a vertical surface and an inclined surface. There are two inclined surfaces, which are located at the top and bottom of the vertical surface, respectively. The connection between the vertical surface and the inclined surface is smooth. The side of the connecting rod near the vertical surface has an arc design.

9. A ring main unit gas box for internal visualization in smart grids according to claim 5, characterized in that, The central axes of the cylinder block, piston rings, air guide cylinder, fixed cylinder, rod body, and housing coincide. The top and bottom of the rubber rod are both designed to be sloping, and it can be bent after being pressed against the moving contact of the vacuum switch.

10. A ring main unit gas box for internal visualization in smart grids according to claim 1, characterized in that, The gas guiding mechanism includes: The pump body is fixedly installed at the bottom of the inner wall of the base box. The exhaust end of the pump body is fixedly provided with a first conduit. The first exhaust end of the first conduit is fixedly provided with a second conduit. The exhaust ends of the second conduit and the second exhaust end of the first conduit are both fixedly provided with a third conduit. The multiple exhaust ends of the two third conduits are all fixedly provided with a fourth conduit. The exhaust end of the fourth conduit extends into the cylinder body. The third exhaust end of the first conduit is fixedly provided with a fifth conduit. There are two fifth conduits. The exhaust ends of the two fifth conduits extend into the air chamber. The outer walls of the first conduit, second conduit, third conduit, fourth conduit and fifth conduit are all provided with valve bodies.

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