Upper isolation direct-acting mechanism sealing solid switch

Abstract

The invention discloses an upper isolation direct-acting mechanism sealing solid switch which comprises an insulating cylinder and a mechanism box. The outer end of the insulating cylinder is provided with a mechanism convenient for connecting incoming and outgoing lines, the top end of the insulating cylinder is provided with a mechanism box, and the insulating cylinder is internally provided with a shielding net; a high-stability isolation grounding mechanism is arranged in the mechanism box, the isolation grounding mechanism comprises a rotating assembly and a transmission assembly, and the rotating assembly and the transmission assembly are both arranged in the mechanism box; through cooperative arrangement of the insulating cylinder, the mechanism box, the wire inlet and outlet mechanism, the isolation grounding mechanism and the protection assembly, the high safety performance and the excellent voltage endurance capability are achieved, the compact design is adopted, the small size is achieved, the modular unit construction is based, the number of assemblies is limited, the installation and operation process is simplified, production and processing are convenient, and the cost is reduced. Therefore, the switch operation of stable opening and closing of the equipment is ensured, and the protection performance of the switch can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switchgear, and particularly to an upper isolation direct-acting mechanism sealed solid switch. Background Art

[0002] Medium-voltage switchgear has become a key component in the power system due to its extensive use and importance to the distribution network system. Traditionally, such equipment generally uses sulfur hexafluoride (SF6) gas as the insulating medium, placing key electrical components such as busbars, circuit breakers, and disconnectors in a closed space filled with SF6 gas. Sulfur hexafluoride has been widely used in the power field due to its excellent insulation and arc-extinguishing capabilities, and its consumption in this industry exceeds 80% of the total production. Sulfur hexafluoride (SF6) is a potent greenhouse gas with a global warming potential (GWP) 23,500 times that of carbon dioxide. The emission of sulfur hexafluoride has a serious impact on the environment. Its lifespan is extremely long, about 3,400 years, so it has a potential long-term impact on the greenhouse effect. The price of sulfur hexafluoride electrical equipment is relatively high, especially compared with traditional air circuit breakers or oil circuit breakers. Although sulfur hexafluoride switchgear has excellent electrical performance, such as good insulation and arc-extinguishing characteristics, this also means that its maintenance and operation may be more complex. If sulfur hexafluoride gas leaks, it will reduce the air pressure in the chamber, thus affecting the arc-extinguishing ability of the high-voltage switch and may lead to equipment failure or even explosion. Therefore, although sulfur hexafluoride medium-voltage switchgear has advantages in electrical performance, its potential environmental impact, cost, maintenance complexity, and safety issues are undeniable drawbacks. These factors have also prompted the power industry to explore the use of other alternative technologies.

[0003] The development of solid-insulated ring main units has made significant progress in recent years. This type of equipment uses solid insulation materials to replace traditional gas or liquid insulation materials, and has the advantages of small size, light weight, high safety, and convenient maintenance, and is widely used in fields such as urban power grid transformation and new energy power generation. With the continuous improvement of the intelligent and automated level of the power system, the demand for solid-insulated ring main units is also increasing.

[0004] In recent years, solid-insulated products have gained wide favor and application in the market due to their significant advantages. As more and more manufacturers are involved in the market competition of solid-insulated switchgear, the price advantage of the products is gradually weakening. Therefore, how to effectively reduce the costs in the processing, manufacturing, and maintenance links on the basis of ensuring the product functionality and application prospects has become the key challenge currently faced by each manufacturer. In other words, manufacturers need to explore methods to reduce costs while avoiding product homogenization.

[0005] Generally speaking, as an environmentally friendly, energy-saving, intelligent, maintenance-free, highly reliable and low-cost power switchgear, solid insulated ring main units will play an increasingly important role in future power systems.

[0006] The existing structure of the upper isolation direct-acting solid cabinet switch is complex, large in volume, and complicated in use process, which is not convenient for production and processing, and its safety performance and withstand voltage ability are poor. Summary of the Invention

[0007] The purpose of the present invention is to provide an upper isolation direct-acting mechanism-sealed solid switch, which adopts a compact design, realizes a small volume, is constructed based on modular units, and has a limited number of components, making the installation and operation processes simplified and convenient for production and processing. At the same time, it has high safety performance and excellent withstand voltage ability to solve the problems proposed in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solution: an upper isolation direct-acting mechanism-sealed solid switch, comprising an insulating cylinder and a mechanism box;

[0009] A wire inlet / outlet connecting mechanism is arranged at the outer end of the insulating cylinder, a mechanism box is installed at the top of the insulating cylinder, and a shielding net is arranged inside the insulating cylinder;

[0010] A highly stable isolation and grounding mechanism is arranged inside the mechanism box, and the isolation and grounding mechanism includes a rotating component and a transmission component, and both the rotating component and the transmission component are arranged inside the mechanism box;

[0011] The wire inlet / outlet mechanism includes a connecting component, a grounding component and an isolating component. A connecting component is arranged inside the wire inlet / outlet mechanism. One end of the connecting component is provided with a grounding component, and one end of the grounding component is provided with an isolating component;

[0012] A protection component is arranged outside the mechanism box.

[0013] Exemplarily, the connecting component includes a lower conductive part, which is arranged inside the insulating cylinder. One end of the lower conductive part is provided with a vacuum circuit breaker, an insulating pull rod is arranged above the vacuum circuit breaker, and an upper conductive part is arranged at the other end of the insulating cylinder.

[0014] Exemplarily, the grounding component includes a grounding finger seat, which is arranged inside the insulating cylinder, and a grounding finger rod is arranged at the top of the grounding finger seat.

[0015] Exemplarily, the isolating component includes an isolating support seat, which is arranged inside the insulating cylinder. An isolating moving contact is arranged at the bottom of the isolating support seat, and an isolating connecting rod is arranged at the top of the isolating support seat.

[0016] Exemplarily, the rotating assembly includes an isolating operating shaft, which is connected through the interior of the mechanism box. A first bevel gear is installed at the bottom end of the isolating operating shaft, and a second bevel gear is meshed and connected to one side of the first bevel gear.

[0017] Exemplarily, one end of the second bevel gear is connected to an isolating crank arm, and the other end of the second bevel gear is connected to an isolating travel plate. Two groups of limiting hexagonal connecting columns are arranged inside the mechanism box, and an energy storage compression spring is also arranged inside the mechanism box, and the energy storage compression spring is located inside the limiting hexagonal connecting columns.

[0018] Exemplarily, the transmission assembly includes a grounding operating shaft and a grounding transmission shaft. The grounding operating shaft is arranged through the interior of the mechanism box. A third bevel gear is installed at one end of the grounding operating shaft, and a fourth bevel gear is meshed with one side of the third bevel gear;

[0019] One end of the grounding transmission shaft is connected to a grounding driven gear, the grounding driven gear is meshed and driven with a grounding crank arm, a grounding travel plate is arranged outside the grounding crank arm, and a grounding copper bar is connected to the lower end of the grounding travel plate.

[0020] Exemplarily, a closing and opening indicating shaft, a tripping rotating shaft, a closing shaft, an energy storage indicating shaft and a manual energy storage shaft are respectively connected through the top of the mechanism box.

[0021] Exemplarily, the protection assembly includes a mechanism box cover plate. A flange seat is arranged at the bottom of the inner cavity of the mechanism box, a sealing rubber ring is arranged at the top of the inner cavity of the mechanism box, and the mechanism box cover plate is bolted to the top of the mechanism box.

[0022] Exemplarily, a smooth shaft limiting bolt is bolted to the outside of the mechanism box, and a first flexible connector and a second flexible connector are arranged at the bottom of the outside of the grounding contact rod.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] Through the cooperative setting of the insulating cylinder, the mechanism box, the incoming and outgoing line mechanism, the isolating and grounding mechanism and the protection assembly, the present invention has high safety performance and excellent voltage withstand capacity. With its compact design, it realizes a small volume. Based on modular units, the number of components is limited, which simplifies the installation and operation processes, facilitates production and processing, ensures the stable closing and opening switch operations of the equipment, and can also improve the protection of the switch.

[0025] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the structure particularly pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a schematic structural diagram of the isolating moving contact of the present invention;

[0028] Figure 3 is a schematic structural diagram of the grounding finger seat of the present invention;

[0029] Figure 4 is a schematic structural diagram of the insulating cylinder of the present invention;

[0030] Figure 5 is a schematic internal sectional view of the present invention;

[0031] Figure 6 is a schematic diagram of the isolating mechanism of the present invention.

[0032] In the figures: 1, insulating cylinder; 2, mechanism box; 3, isolating operating shaft; 4, grounding operating shaft; 5, mechanism box cover plate; 6, closing and opening indicating shaft; 7, opening rotating shaft; 8, closing shaft; 9, energy storage indicating shaft; 10, manual energy storage shaft; 11, lower conducting member; 12, vacuum circuit breaker; 13, shielding net; 14, upper conducting member; 15, isolating moving contact; 16, isolating support seat; 17, isolating connecting rod; 18, grounding contact rod; 19, flange seat; 20, sealing rubber ring; 21, insulating pull rod; 22, grounding finger seat; 23, first flexible connecting member; 24, second flexible connecting member; 25, grounding travel plate; 26, grounding toggle arm; 27, isolating toggle arm; 28, second bevel gear; 29, first bevel gear; 30, energy storage compression spring; 31, limiting hexagonal connecting column; 32, third bevel gear; 33, fourth bevel gear; 34, isolating travel plate; 35, optical axis limiting bolt; 36, grounding transmission shaft; 37, grounding transmission driven gear; 38, grounding copper bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1-6As shown in the figure, the present invention provides an upper isolation direct-acting mechanism-sealed solid switch, which includes an insulating cylinder 1 and a mechanism box 2. The outer end of the insulating cylinder 1 is provided with a convenient connection for the incoming and outgoing line mechanism. The top of the insulating cylinder 1 is installed with the mechanism box 2, and a shielding net 13 is arranged inside the insulating cylinder 1. Inside the mechanism box 2, there is a highly stable isolation and grounding mechanism, which includes a rotating component and a transmission component, and both the rotating component and the transmission component are arranged inside the mechanism box 2.

[0035] The incoming and outgoing line mechanism includes a connection component, a grounding component, and an isolation component. The connection component is arranged inside the incoming and outgoing line mechanism. One end of the connection component is provided with a grounding component, and one end of the grounding component is provided with an isolation component.

[0036] A protective component is arranged on the outside of the mechanism box 2.

[0037] The material used for the insulating cylinder 1 is epoxy resin, and a shielding net 13 is arranged in the middle part of the epoxy resin.

[0038] The shielding net 13 can effectively block electromagnetic interference (EMI), reduce the influence of external electromagnetic fields on the internal circuits of the switchgear, and at the same time prevent internal electromagnetic radiation from interfering with external devices. It can provide a path to guide static charges to the ground, thereby protecting the internal electronic components from damage caused by electrostatic discharge (ESD). The shielding net 13 helps to reduce radio frequency interference (RFI) and ensures that the electronic devices in the switchgear can operate normally in an interference-free environment.

[0039] In high-voltage applications, the shielding net 13 can help evenly distribute the electric field, reduce the local electric field intensity, thereby reducing the risk of breakdown of the insulating material. It can also limit the development of internal arcs, reduce partial discharge phenomena, and improve the overall insulation performance of the switchgear.

[0040] The shielding net 13 can also play a certain role in structural reinforcement, improving the overall mechanical strength and stability of the epoxy resin encapsulation. In some cases, the shielding net 13 may help improve the heat conduction inside the epoxy resin, help dissipate heat, and prevent the internal components from overheating.

[0041] In short, the shielding net 13 inside the epoxy resin in the solid switchgear is multifunctional. It not only helps to improve the electromagnetic compatibility of the switchgear, but also enhances its insulation performance and mechanical strength, ensuring the long-term stable operation of the switchgear. On the outgoing line side of the insulating cylinder 1, the three phases are different in height. In order to make it more convenient to lead out the cable, there are no sharp corners or other acute angles inside the overall appearance, effectively solving insulation problems such as withstand voltage and partial discharge from the structural design.

[0042] Such as Figure 2As shown in the figure, the connection component includes a lower conductive part 11, which is arranged inside the insulating cylinder 1. One end of the lower conductive part 11 is provided with a vacuum circuit breaker 12. Above the vacuum circuit breaker 12, there is an insulating pull rod 21. The other end of the insulating cylinder 1 is provided with an upper conductive part 14.

[0043] As Figure 2 shown in the figure, the grounding component includes a grounding finger seat 22, which is arranged inside the insulating cylinder 1. At the top of the grounding finger seat 22, there is a grounding contact rod 18.

[0044] As Figure 2 shown in the figure, the isolation component includes an isolation support seat 16, which is arranged inside the insulating cylinder 1. At the bottom of the isolation support seat 16, there is an isolation moving contact 15. At the top of the isolation support seat 16, there is an isolation connecting rod 17.

[0045] As Figure 1 and 3 shown in the figure, the rotating component includes an isolation operating shaft 3, which is connected through the inside of the mechanism box 2. At the bottom end of the isolation operating shaft 3, a first bevel gear 29 is installed. On one side of the first bevel gear 29, there is a second bevel gear 28 engaged with it.

[0046] Among them, one end of the second bevel gear 28 is connected with an isolation crank arm 27, and the other end of the second bevel gear 28 is connected with an isolation travel plate 34. Inside the mechanism box 2, there are two groups of limit hexagonal connecting columns 31. Inside the mechanism box 2, there is also a energy storage compression spring 30, and the energy storage compression spring 30 is located inside the limit hexagonal connecting columns 31.

[0047] As Figure 1 and 3 shown in the figure, the transmission component includes a grounding operating shaft 4 and a grounding transmission shaft 36. The grounding operating shaft 4 is arranged through the inside of the mechanism box 2. At one end of the grounding operating shaft 4, a third bevel gear 32 is installed. On one side of the third bevel gear 32, there is a fourth bevel gear 33 engaged with it.

[0048] One end of the grounding transmission shaft 36 is connected with a grounding transmission driven gear 37. The grounding transmission driven gear 37 is engaged with a grounding crank arm 26. On the outside of the grounding crank arm 26, there is a grounding travel plate 25. The lower end of the grounding travel plate 25 is connected with a grounding copper bar 38.

[0049] In addition;

[0050] As Figure 1 shown in the figure, the top of the mechanism box 2 is respectively connected through a closing and opening indicating shaft 6, a tripping rotating shaft 7, a closing shaft 8, an energy storage indicating shaft 9 and a manual energy storage shaft 10.

[0051] Among them;

[0052] AsFigure 1 and 2 As shown in 2 , the protection component includes the cover plate 5 of the mechanism box. A flange seat 19 is arranged at the bottom of the inner cavity of the mechanism box 2, a sealing rubber ring 20 is arranged at the top of the inner cavity of the mechanism box 2, and the cover plate 5 of the mechanism box is bolted to the top of the mechanism box 2.

[0053] Finally;

[0054] As Figure 2 and 3 As shown in 3 , a optical axis limit bolt 35 is bolted to the outside of the mechanism box 2, and a first soft connecting piece 23 and a second soft connecting piece 24 are arranged at the bottom outside the grounding contact rod 18.

[0055] The vacuum circuit breaker 12 is driven by a motor. The motor rotates to store energy for the energy storage spring. It can be remotely controlled or directly rotate the on-off operation knob currently to realize the automatic on-off of the circuit breaker, and complete the motor operation in a small space. The motor drives the on-off, which can not only reduce the later manpower input in operation, but also avoid safety accidents occurring during the on-off of the circuit breaker, thus ensuring the safety of the staff.

[0056] The motor drive is also more stable than the manual drive for on-off, improving the mechanical characteristic levels during the on-off of the circuit breaker, such as synchronism, bounce, closing speed, closing time, etc. The on-off is carried out in a shorter time and at a faster speed, which means that the time of the large current pulling arc is shorter and the equipment safety is higher. This makes the overall stability of the switch stronger, and the characteristics such as durability and voltage resistance are significantly improved. One side of the isolating and grounding mechanism is a pure mechanical drive. By manually operating the isolating or grounding operating shaft 4, it drives the gear transmission to compress and store energy for the compression spring, and subsequent series of mechanical transmissions, including bevel gears, rotating shafts, toggle arms, etc., to realize the on-off of the grounding or isolation driven by the stroke plate.

[0057] The isolating and grounding mechanism is completely self-developed and adjusts the force value and limit problem of the energy storage compression spring 30 according to the magnitude of the test electrodynamic force, so that the equipment will not be forced to trip due to too large electrodynamic force even in case of short circuit during use.

[0058] The following is the design process of the whole mechanism: Rotate the isolating operating shaft 3 to drive the first bevel gear 29 to rotate. Through gear meshing transmission, it is transmitted to the second bevel gear 28. The shaft passing through the second bevel gear 28 is divided into two ends. One end is connected to the isolating toggle arm 27. The shaft rotation drives the isolating toggle arm 27 to rotate around the shaft as the center. The other end of the isolating toggle arm 27 is connected to the isolating stroke plate 34 to drive the isolating connecting rod 17 to move up and down to realize the on-off of the isolating switch. The other end of the shaft drives the energy storage compression spring 30 to move and move between the two limit hexagonal connecting columns 31.

[0059] Rotate the grounding operation shaft 4 to drive the third bevel gear 32 to rotate and mesh with the fourth bevel gear 33. One end of the grounding transmission shaft 36 is connected to the grounding transmission driven gear 37 and drives the grounding crank arm 26 through gear meshing. The grounding crank arm 26 drives the grounding travel plate 25 to move up and down to realize the opening and closing of the grounding switch. The lower end of the grounding travel plate 25 is connected to the grounding copper bar 38 to increase parameters such as the current between the grounding contact rod 18, and the other end is connected to a compression spring to move between two limits.

[0060] The protection level of the entire mechanism box 2 can reach IP67. The bottom plate of the mechanism box 2 and the side plates on the outside are connected by integral welding, and the welds are continuous welds. The mechanism box cover 5 and the integral mechanism box 2 are connected by bolts, and a sealing rubber ring 20 is added at their joint part to increase the contact area and improve the sealing performance. This not only ensures the detachable flexibility during the installation, use and maintenance of the mechanism, but also guarantees the sealing performance of the mechanism box 2. The openings on the bottom plate of the mechanism box 2 are all equipped with flange seats 19, and the sealing rubber ring 20 inside the flange seats 19 ensures the sealing performance inside the insulating cylinder 1.

[0061] The high sealing performance and protection level of the mechanism box 2 of the switch cabinet bring the following benefits:

[0062] Strong protection ability: High sealing performance and protection level can effectively prevent harmful substances such as external dust, moisture, and corrosive gases from invading, and protect the internal electrical components from damage. Improvement of safety: Reduces electrical failures caused by external factors, reduces the risks of electric shock and fire, and improves the overall safety of the equipment.

[0063] Extension of the maintenance cycle: Since the internal environment is well protected, the cleanliness and stability of the electrical components are higher, so the maintenance cycle of the equipment can be extended, reducing the maintenance cost.

[0064] Enhancement of operation reliability: High sealing performance and protection level help to maintain the stability of the internal environment of the switch cabinet, thereby improving the operation reliability of the equipment and reducing the downtime caused by environmental factors.

[0065] Extension of service life: The electrical components work in a good environment, and their service life can be extended, reducing the frequency and cost of replacing parts.

[0066] Strong adaptability: The switch cabinet with a high protection level can adapt to more harsh working environments, such as outdoor, chemical industry, mining and other special occasions.

[0067] Enhancement of corporate image: Adopting a switch cabinet with high sealing performance and protection level can reflect the enterprise's emphasis on product quality and safety, and enhance the corporate image.

[0068] Compliance with standards and specifications: Many industry standards and specifications require electrical equipment to have a certain protection level. Switchgear cabinets with high sealing performance and protection level can meet these requirements and facilitate obtaining relevant certifications.

[0069] The entire operation process is roughly divided into two states:

[0070] The first is when the switchgear is operating normally, the vacuum circuit breaker 12 needs to be closed, the isolating switch needs to be closed, and the grounding switch needs to be opened to form a conduction path from the incoming line side to the outgoing line side. At this time, the operation needs to be carried out in two steps: First, on the circuit breaker mechanism, the closing spring is driven by the motor to achieve energy storage and stretching. Then, rotate the closing shaft 8 clockwise to close the circuit breaker. During the whole process, the circuit breaker mechanism drives the adjusting stud to move downward. The upper end of the adjusting stud is connected to the vacuum circuit breaker 12, and the lower end is connected to the insulating pull rod 21. The lower end of the insulating pull rod 21 is connected to the first flexible connector 23, the second flexible connector 24, and the vacuum interrupter chamber in the vacuum circuit breaker 12, and the lowermost end is connected to the lower conducting part 11;

[0071] On one side of the isolating mechanism, rotating the grounding operating shaft 4 clockwise realizes the opening of the grounding switch through the above-mentioned transmission, and rotating the isolating operating shaft 3 counterclockwise realizes the closing of the isolating switch. During the whole process, the grounding contact rod 18 moves upward and separates from the grounding finger seat 22; on the isolating side, the whole moves downward. The upper end of the isolating connecting rod 17 is connected to the isolating mechanism, the lower end is connected to the isolating moving contact 15, and the isolating moving contact 15 passes through the isolating support seat 16. The lowermost isolating moving contact 15 is connected to the upper conducting part 14 to realize closing.

[0072] The second is when it is necessary to ground the equipment for maintenance, etc., to conduct the grounding circuit. It is necessary to close the vacuum circuit breaker 12, open the grounding closing disconnector, and the circuit enters from the incoming line side and flows out from the grounding rod.

[0073] The operation sequence is to first open the vacuum circuit breaker 12, then open the disconnector, close the grounding switch, and finally close the vacuum circuit breaker 12 to realize the conduction of the circuit from the incoming line side to the grounding side;

[0074] The whole process is that the motor stores energy and stretches the compression spring 30 for the vacuum circuit breaker 12. Rotate the opening rotating shaft 7 clockwise to open the vacuum circuit breaker 12. Then operate the isolating operating shaft 3 to rotate clockwise to open, and the grounding circuit will be conducted. Then operate the grounding operating shaft 4 counterclockwise to close the grounding switch. Then operate the closing shaft 8 clockwise to close the vacuum circuit breaker 12.

[0075] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An upper isolation direct-acting mechanism sealed solid switch, characterized in that, It includes an insulating cylinder (1) and a mechanism box (2); The outer end of the insulating cylinder (1) is provided with a mechanism for facilitating the connection of incoming and outgoing lines. The mechanism box (2) is installed at the top of the insulating cylinder (1), and a shielding net (13) is arranged inside the insulating cylinder (1); A highly stable isolation and grounding mechanism is arranged inside the mechanism box (2). The isolation and grounding mechanism includes a rotating component and a transmission component, and both the rotating component and the transmission component are arranged inside the mechanism box (2); The incoming and outgoing line mechanism includes a connection component, a grounding component, and an isolation component. A connection component is arranged inside the incoming and outgoing line mechanism. One end of the connection component is provided with a grounding component, and one end of the grounding component is provided with an isolation component; A protective component is arranged on the outer side of the mechanism box (2).

2. The sealed solid switch of an upper isolation direct-acting mechanism according to claim 1, characterized in that: The connection component includes a lower conductive part (11). The lower conductive part (11) is arranged inside the insulating cylinder (1). One end of the lower conductive part (11) is provided with a vacuum circuit breaker (12). An insulating pull rod (21) is arranged above the vacuum circuit breaker (12). The other end of the insulating cylinder (1) is provided with an upper conductive part (14).

3. The upper isolation direct-acting mechanism sealed solid switch according to claim 2, characterized in that: The grounding component includes a grounding finger seat (22). The grounding finger seat (22) is arranged inside the insulating cylinder (1). A grounding contact rod (18) is arranged at the top of the grounding finger seat (22).

4. The sealed solid switch of an upper isolation direct-acting mechanism according to claim 3, characterized in that: The isolation component includes an isolation support seat (16). The isolation support seat (16) is arranged inside the insulating cylinder (1). An isolation moving contact (15) is arranged at the bottom of the isolation support seat (16). An isolation connecting rod (17) is arranged at the top of the isolation support seat (16).

5. The sealed solid switch of an upper isolation direct-acting mechanism according to claim 1, characterized in that: The rotating component includes an isolation operating shaft (3). The isolation operating shaft (3) is connected through the inside of the mechanism box (2). A first bevel gear (29) is installed at the bottom end of the isolation operating shaft (3). A second bevel gear (28) is meshed and connected to one side of the first bevel gear (29).

6. The upper isolation direct-acting mechanism sealed solid switch according to claim 5, characterized in that: One end of the second bevel gear (28) is connected to an isolation crank arm (27). The other end of the second bevel gear (28) is connected to an isolation travel plate (34). Two groups of limit hexagonal connecting columns (31) are arranged inside the mechanism box (2). An energy storage compression spring (30) is also arranged inside the mechanism box (2), and the energy storage compression spring (30) is located inside the limit hexagonal connecting columns (31).

7. The sealed solid switch of an upper isolation direct-acting mechanism according to claim 6, characterized in that: The transmission component includes a grounding operating shaft (4) and a grounding transmission shaft (36). The grounding operating shaft (4) is arranged through the inside of the mechanism box (2). A third bevel gear (32) is installed at one end of the grounding operating shaft (4). A fourth bevel gear (33) is meshed with one side of the third bevel gear (32); One end of the grounding transmission shaft (36) is connected to a grounding transmission driven gear (37). The grounding transmission driven gear (37) is engaged and driven with a grounding crank arm (26). A grounding travel plate (25) is arranged outside the grounding crank arm (26). The lower end of the grounding travel plate (25) is connected to a grounding copper bar (38).

8. The upper isolation direct-acting mechanism sealed solid switch according to claim 7, characterized in that: The top of the mechanism box (2) is respectively connected in a penetrating manner with a closing and opening indication shaft (6), a tripping rotating shaft (7), a closing shaft (8), an energy storage indication shaft (9) and a manual energy storage shaft (10).

9. The sealed solid switch of an upper isolation direct-acting mechanism according to claim 1, wherein: The protection component includes a mechanism box cover plate (5). A flange seat (19) is arranged at the bottom of the inner cavity of the mechanism box (2), a sealing rubber ring (20) is arranged at the top of the inner cavity of the mechanism box (2), and the mechanism box cover plate (5) is bolted to the top of the mechanism box (2).

10. A top-isolated direct-acting mechanism sealed solid switch according to claim 3, characterized in that: A smooth shaft limit bolt (35) is bolted to the outside of the mechanism box (2), and a first flexible connecting piece (23) and a second flexible connecting piece (24) are arranged at the bottom of the outside of the grounding contact rod (18).

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