High-voltage visual switch

Abstract

This invention relates to a high-voltage visual switch, comprising an insulating housing and an inlet rod, a vacuum interrupter, a circuit breaker lever, a disconnector, and an outlet rod disposed within the insulating housing. The inlet rod is electrically connected to the lower moving end of the vacuum interrupter, and the circuit breaker lever is connected to the moving end of the vacuum interrupter. The disconnector includes an upper connecting part, a lower connecting part, and an isolating lever. The upper connecting part is electrically connected to the upper stationary end of the vacuum interrupter via a busbar, the lower connecting part is electrically connected to the outlet rod, and the isolating lever is electrically connected to the lower connecting part. A transparent cover is provided on the insulating housing. The lower part of the upper connecting part is located in the upper part of the inner cavity of the transparent cover, and the upper part passes through the top of the transparent cover and connects to the busbar. The upper end of the isolating lever can move vertically within the transparent cover, contacting or separating from the lower part of the upper connecting part. The transparent cover is visible 360 ​​degrees around its circumference. With this high-voltage visual switch, the operator can observe the opening and closing status of the disconnector from various angles, ensuring that the disconnector is in the correct state.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switch technology, and in particular to a high-voltage visual switch. Background Technology

[0002] In existing applications of pole-mounted high-voltage switches, there are two types of disconnecting switches, as follows: One type is the external disconnect switch, which consists of a metal base, insulators, moving contacts, stationary contacts, and an operating mechanism. The entire unit is mounted on a chassis, requiring all parts to be assembled in sequence, making assembly difficult. Sufficient air clearance is used to ensure insulation, resulting in a large switch size. During operation, the rotating moving contact creates a visible air gap, making it highly susceptible to weather and environmental factors, which can easily lead to malfunctions. Secondly, it features a small, internally mounted, visible disconnect switch with the viewing window located in the middle of the disconnect switch's contact point. When the disconnect switch is activated, the observable area is very small, making it impossible to directly observe whether the contact point is fully open or whether the disconnection is fully closed. This compromises operator safety should a malfunction occur.

[0003] In summary, the present invention provides a high-voltage visual switch to solve the above-mentioned problems. Summary of the Invention

[0004] This invention provides a high-voltage visual switch with a transparent inner casing that is visible 360 ​​degrees around its circumference. The operator can observe the opening and closing status of the disconnecting switch from various angles, and the visible range covers the entire process of the disconnecting rod from the open position to the closed position. The operator can easily observe the switch and avoid dangerous situations caused by mechanical errors or improper operation that could endanger life safety.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-voltage visual switch includes an insulating housing and an inlet bar, a vacuum interrupter, a circuit breaker lever, a disconnector switch, and an outlet bar disposed on the insulating housing. The incoming line bar is electrically connected to the lower moving end of the vacuum interrupter, and the circuit breaker lever is connected to the moving end of the vacuum interrupter to control the on / off state of the vacuum interrupter. The disconnecting switch includes an upper connecting part, a lower connecting part, and an isolation rod. The upper connecting part is electrically connected to the upper stationary end of the vacuum interrupter via a busbar. The lower connecting part is electrically connected to the outgoing rod. The isolation rod is electrically connected to the lower connecting part. The insulating housing is provided with a transparent cover. The lower part of the upper connecting part is located in the upper part of the inner cavity of the transparent cover, and the upper part passes through the top of the transparent cover and is connected to the busbar. The upper end of the isolation rod can move inside the transparent cover and contact or separate from the lower part of the upper connecting part to control the opening and closing of the isolation switch. The transparent cover is visible 360 ​​degrees around its circumference. The lower end of the transparent cover is detachably mounted on the insulating housing. The upper part of the upper connecting part is detachably connected to the busbar.

[0006] Preferably, the upper connecting part includes an upper contact finger base and an upper contact finger spring. The lower part of the upper contact finger base is located in the upper part of the inner cavity of the transparent cover, and the upper part passes through the top of the transparent cover and is detachably connected to the busbar. The lower end face of the upper contact finger base is provided with a groove, and an upper annular groove is provided in the groove. The upper contact finger spring is provided in the upper annular groove, and the upper end of the isolation rod can be inserted into the groove and abut against the upper contact finger spring.

[0007] Preferably, the lower connecting part includes a lower contact finger base and a lower contact finger spring, the insulating housing is provided with an isolation cavity for placing the isolation pull rod, the upper end of the isolation cavity is connected to the inner cavity of the transparent cover, the lower contact finger base is detachably connected to the isolation cavity and connected to the outgoing rod; The lower contact finger base has an insertion hole along its axial direction, and a lower annular groove is provided in the insertion hole. The lower contact finger spring is disposed in the lower annular groove. The upper part of the isolation rod is slidably disposed in the insertion hole, and the outer wall of the isolation rod abuts against the lower contact finger spring.

[0008] Preferably, a sealing gasket is provided from top to bottom on the outer side of the upper contact finger base of the busbar and the upper end face of the transparent cover; The upper end face of the lower part of the upper touch base abuts against the upper end face of the inner cavity of the transparent cover with an upper sealing ring.

[0009] Preferably, the upper end face of the insulating housing is provided with a mounting groove with an annular structure, the lower end of the transparent cover is threaded into the mounting groove, and the lower end face of the transparent cover is in clearance fit with the bottom of the mounting groove; The outer side wall of the lower end of the transparent cover is provided with a positioning block with an annular structure, and the upper end face of the insulating shell has a lower sealing groove with an annular structure. The sealing groove is located on the outer periphery of the mounting groove, and a lower sealing ring is installed in the lower sealing groove. The lower end face of the transparent cover abuts against the upper end face of the insulating shell and abuts against the lower sealing ring.

[0010] Preferably, an elastic threaded insert is pre-embedded in the mounting groove, and the lower end of the transparent cover is threadedly connected to the elastic threaded insert.

[0011] Preferably, the upper outer wall of the isolation rod is provided with a recessed annular marking groove, and the marking groove is provided with a colored wear-resistant coating.

[0012] Preferably, the outer surface of the transparent cover is provided with a hydrophobic coating, and the inner surface is covered with an explosion-proof film.

[0013] Preferably, the end of the busbar is configured with a C-shaped opening, the upper part of the upper connecting part is threadedly connected to the C-shaped opening, and the port of the C-shaped opening is fastened by a fastener so that the upper threaded surface of the upper connecting part abuts against the inner threaded surface of the C-shaped opening.

[0014] Preferably, an insulating protective cover is fitted on the outside of the busbar.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The transparent cover is visible from all 360 degrees around its circumference. The operator can observe the opening and closing status of the disconnecting switch inside the transparent cover from various angles, that is, the connection status between the disconnecting rod and the upper connecting part. The operator does not need to specifically move their line of sight to the viewing window to observe the connection status between the disconnecting rod and the upper connecting part, which makes it easier for the operator to observe and use.

[0016] 2. The lower end of the transparent cover is detachably mounted on the insulating housing, and the upper part of the upper connecting part is detachably connected to the busbar, so that the entire transparent cover can be removed from the insulating housing 1, which facilitates its installation and replacement and reduces replacement costs. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an isometric view of the high-voltage visual switch in an embodiment of the present invention; Figure 2 This is a cross-sectional view of a high-voltage visual switch according to an embodiment of the present invention; Figure 3 Examples of embodiments of the present invention Figure 2 Enlarged diagram of A in the middle; Figure 4 Examples of embodiments of the present invention Figure 2 Enlarged diagram of B in the diagram; Figure 5 This is a schematic diagram of the upper connecting portion in an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the upper connecting portion in an embodiment of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the lower connecting portion in an embodiment of the present invention; Figure 8 This is a schematic diagram of the isolation tie rod in an embodiment of the present invention; Figure 9 This is a schematic diagram showing the connection between the busbar and the upper connecting part in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Insulating housing; 101. Circuit breaker cavity; 102. Isolation cavity; 103. Mounting groove; 104. Elastic threaded insert; 105. Lower sealing ring; 2. Inlet bar; 3. Vacuum interrupter; 4. Circuit breaker pull rod; 5. Disconnecting switch; 51. Upper connection part; 511. First contact finger base; 512. Second contact finger base; 5121. Groove; 513. Upper sealing groove; 514. Upper sealing ring; 515. Upper contact finger spring; 52. Lower connection part 521. Lower contact finger base; 522. Lower contact finger spring; 523. Insertion hole; 53. Isolation pull rod; 531. Connecting rod; 532. Marking rod; 5321. Marking groove; 6. Outlet bar; 7. Transparent cover; 71. Positioning block; 8. Busbar; 81. C-shaped opening; 82. Fastener; 9. Nut; 10. Sealing gasket; 1001. Spring washer; 1002. Flat washer; 1003. Nylon gasket; 11. Insulating protective cover. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] This invention provides a high-voltage visual switch, such as... Figures 1-2 As shown, the device includes an insulating housing 1 and an inlet rod 2, a vacuum interrupter 3, a circuit breaker lever 4, a disconnector switch 5, and an outlet rod 6, all mounted on the insulating housing 1. The insulating housing 1 is made of epoxy resin. The inlet rod 2, the vacuum interrupter 3, and the outlet rod 6 are all fixedly encapsulated within the insulating housing 1 by a mold. The inlet rod 2, the vacuum interrupter 3, and the circuit breaker lever 4 are located in the left half of the insulating housing 1, while the disconnector switch 5 and the outlet rod 6 are located in the right half of the insulating housing 1. The installation of the circuit breaker and the disconnector switch 5 on the insulating housing 1 does not interfere with each other. Specifically, a circuit breaker cavity 101 and an isolation cavity 102 are formed in the left and right halves of the insulating housing 1, respectively. The circuit breaker lever 4 is mounted on the circuit breaker cavity 101. By moving the circuit breaker lever 4, the vacuum interrupter 3 is switched on and off. The inner lever of the disconnector switch 5 is mounted in the isolation cavity 102. By moving the inner lever of the disconnector switch 5, the disconnector switch 5 is switched on and off.

[0024] Specifically, such as Figure 2 As shown, the incoming rod 2 is electrically connected to the lower moving end of the vacuum interrupter 3, and the circuit breaker lever 4 is simultaneously connected to the moving end of the vacuum interrupter 3. By moving the circuit breaker lever 4 in the up-down direction, the lower moving end connected to the circuit breaker lever 4 can be brought into contact with the upper moving end of the vacuum interrupter 3 to conduct the circuit and realize the passage of the vacuum interrupter 3, or the lower moving end of the vacuum interrupter 3 can be separated from the upper moving end to disconnect the circuit and realize the circuit break of the vacuum interrupter 3.

[0025] Specifically, such as Figure 2As shown, the disconnecting switch 5 includes an upper connecting part 51, a lower connecting part 52, and an isolation rod 53. The upper part of the upper connecting part 51 is electrically connected to the upper stationary end of the vacuum interrupter 3. Specifically, the two are detachably electrically connected by a busbar 8. The lower connecting part 52 is electrically connected to the outgoing rod 6. The isolation rod 53 is in contact with the lower connecting part 52 to make them electrically connected. The operator moves the isolation rod 53 in the isolation chamber 102. When the isolation rod 53 moves upward, the upper end of the isolation rod 53 abuts against the upper connecting part 51, and the isolation rod 53 is electrically connected to the upper connecting part 51, so that the upper connecting part 51, the disconnecting switch 5, the lower connecting part 52, and the outgoing rod 6 form a circuit path, realizing the circuit of the disconnecting switch 5. When the isolation rod 53 moves downward, the upper end of the isolation rod 53 separates from the upper connecting part 51, and the isolation rod 53 is not connected to the upper connecting part 51, realizing the circuit breaking of the disconnecting switch 5.

[0026] To visualize the open and closed states of disconnector switch 5, operators can more intuitively judge the status of disconnector switch 5 after operation. Specifically, for example... Figure 2 As shown, a transparent cover 7 is provided on the upper end face of the right half of the insulating housing 1. The lower part of the upper connecting part 51 is located in the upper part of the inner cavity of the transparent cover 7, and the upper part passes through the top of the transparent cover 7 and is electrically connected to the busbar 8. The upper end of the isolation cavity 102 where the isolation rod 53 is located is connected to the inner cavity of the transparent housing. The upper end of the isolation rod 53 can move into the transparent cover 7 and move within the transparent cover 7. When the upper end of the isolation rod 53 moves upward within the transparent cover 7 and contacts the lower part of the upper connecting part 51, the circuit between the isolation rod 53 and the upper connecting part 51 is connected, so that the upper connecting part 51, the disconnecting switch 5, the lower connecting part 52 and the outgoing rod 6 form a circuit path, realizing the passage of the disconnecting switch 5. When the isolation rod 53 moves downward within the transparent cover 7, the upper end of the isolation rod 53 separates from the upper connecting part 51, and the isolation rod 53 is not connected to the upper connecting part 51, realizing the disconnection of the disconnecting switch 5.

[0027] Furthermore, in this embodiment, the transparent cover 7 is visible 360 ​​degrees around its circumference. No matter which direction the operator looks at the transparent cover 7 from, they can see the connection status between the internal isolation rod 53 and the upper connecting part 51. This eliminates the need for the operator to specifically shift their gaze to the viewing window to observe the connection status, making it convenient for the operator to observe and use. The visible range covers the entire process from the open position to the closed position of the isolation rod 53, preventing dangerous situations that could endanger life due to mechanical errors or improper operation. Moreover, the lower end of the transparent cover 7 is detachably mounted on the insulating housing 1, and the upper part of the upper connecting part 51 is detachably connected to the busbar 8, allowing the entire transparent cover 7 to be removed from the insulating housing 1 for easy installation and replacement. The upper connecting part 51 is also detached along with the transparent cover 7, enabling independent disassembly and assembly, reducing replacement costs. Specifically, the transparent cover 7 is made of one-piece molded high boron tempered glass, the isolating switch 5 is a metal pull rod, and the upper connecting part 51 and the lower connecting part 52 are also made of metal, which can form a conductive path when in contact.

[0028] To ensure a stable connection between the upper connecting part 51 and the isolation rod 53, specifically, as follows: Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the upper connecting part 51 includes an upper contact finger base and an upper contact finger spring 515. The lower part of the upper contact finger base is located in the upper part of the inner cavity of the transparent cover 7, and the upper part passes through the top of the transparent cover 7 and is detachably connected to the busbar 8. A groove 5121 is provided on the lower end face of the upper contact finger base. An upper annular groove is provided in the groove 5121. The upper contact finger spring 515 is an annular structure. The annular upper contact finger spring 515 is installed in the upper annular groove, and part of it protrudes into the groove 5121. The upper end of the isolation rod 53 can be inserted into the groove 5121 and connect with... The upper contact spring 515 abuts against the outer side of the isolation rod 53, so that the upper contact spring 515 is circumferentially sleeved on the outer side of the isolation rod 53, which can apply a certain clamping force to it, so that it is stably located in the groove 5121 and abuts against the upper contact spring 515, realizing a stable circuit. Moreover, the upper contact spring 515 abuts against the outer wall of the isolation rod 53 in the circumferential direction, which directly increases the current carrying area, so that the isolation rod 53 can flow and carry a larger current, without having to increase the diameter of the isolation rod 53 to achieve the purpose of increasing the current carrying area.

[0029] Specifically, the upper contact base includes a first contact base 511 and a second contact base 512 coaxially arranged. The first contact base 511 is integrally connected above the second contact base 512. The diameter of the first contact base 511 is smaller than the diameter of the second contact base 512. The second contact base 512 is located at the top of the transparent cover 7. The first contact base 511 passes through the top of the transparent cover 7 and is detachably connected to the busbar 8. The upper end face of the second contact base 512 abuts against the upper end face of the inner cavity of the transparent cover 7 to ensure the stability of the entire upper connection part 51.

[0030] To ensure a stable connection between the lower connecting part 52 and the isolation rod 53, specifically, as follows: Figure 4 and Figure 7 As shown, the lower connecting part 52 includes a lower contact finger base 521 and a lower contact finger spring 522. The lower contact finger base 521 is connected to the isolation cavity 102 and is connected to the lead-out bar 6. The lower contact finger base 521 has an insertion hole 523 along its axial direction. A lower annular groove is provided in the insertion hole 523. The lower contact finger spring 522 is disposed in the lower annular groove and partially protrudes from the insertion hole 523. The isolation pull rod 53 passes through the insertion hole 523 and is slidably disposed on the insertion hole 523. The isolation pull rod 53 passes through the insertion hole 523, so that the lower contact finger spring 522 is sleeved on the outside of the isolation pull rod 53 in the circumferential direction. The lower contact finger spring 522 can apply a certain clamping force to it, so that... It slides stably on the socket 523 and can stably abut against the lower contact spring 522, ensuring the circuit path between the isolation rod 53, the lower connecting part 52 and the outlet rod 6. Moreover, the lower contact spring 522 abuts against the outer wall of the isolation rod 53 in the circumferential direction, directly increasing the current carrying area, so that the isolation rod 53 can flow and carry a larger current, without having to increase the diameter of the isolation rod 53 to increase the current carrying area. In addition, in conjunction with the upper contact spring 515 in the upper connecting part 51, the current carrying area of ​​the current inflow end and the current outflow end of the isolation rod 53 is increased at the same time, thereby improving the current carrying capacity of the isolation rod 53.

[0031] Specifically, such as Figure 4 As shown, the lower contact finger base 521 inside the lower connecting part 52 is detachably connected to the isolation cavity 102 by bolts, which facilitates the disassembly and assembly of the lower connecting part 52, making the entire lower connecting part 52 replaceable and reducing the maintenance cost of the disconnect switch 5. Moreover, the end of the outgoing rod 6 near the lower contact finger base 521 is provided with a threaded hole, and the lower contact finger base 521 is provided with a corresponding connecting hole. A metal bolt passes through the connecting hole and is threaded into the threaded hole at the end of the outgoing rod 6, thus threading the lower contact finger base 521 and the outgoing rod 6 together, so that the two can stably form a circuit. Since the lower contact finger base 521 itself is connected by bolts, now the lower contact finger base 521 and the outgoing rod 6 are connected by bolts to realize the electrical connection between the two. There is no need to use additional wires and connecting parts to electrically connect the lower contact finger base 521 and the outgoing rod 6, making the structure simpler.

[0032] Specifically, such as Figure 3 As shown, since the upper contact base is connected to the busbar 8, the connection position of the upper contact base is stable. The upper end face of the second contact base 512 inside the upper contact base abuts against the upper end face of the inner cavity of the transparent cover 7, which will apply an upward abutting force to the top of the transparent cover 7. In order to maximize the abutting force and ensure the service life of the top of the transparent cover 7, the upper end face of the second contact base 512 inside the upper contact base is provided with an annular upper sealing groove 513. An upper sealing ring 514 is installed in the upper sealing groove 513. The upper end face of the second contact base 512 inside the upper contact base and the upper end face of the inner cavity of the transparent cover 7 abut against the upper sealing groove 514. A sealing ring 514 buffers part of the contact force. A nut 9 and a sealing gasket 10 are fitted from top to bottom on the outer side of the upper contact finger base on the upper end face of the busbar 8 and the transparent cover 7. The nut 9 and sealing gasket 10 abut against the upper end face of the busbar 8 and the transparent cover 7, so that the top of the transparent cover 7 has a downward contact force, which partially offsets the upward contact force, minimizing the contact force and installation stress on the top of the transparent cover 7. Furthermore, the upper sealing gasket also seals the upper contact finger base against the top of the transparent cover 7, ensuring a good seal at the top of the cover. Specifically, the sealing gasket 10 includes a spring washer 1001, a flat washer 1002, and a nylon gasket 1003 from top to bottom. The spring washer 1001 is located between the flat washer 1002 and the nut 9, used to tighten the nut 9 and abut against the flat washer 1002 and the nylon gasket 1003.

[0033] Specifically, such as Figure 4As shown, an annular mounting groove 103 is provided on the upper end face of the right half of the insulating housing 1. The lower end of the transparent cover 7 is threaded into the mounting groove 103 to achieve stable and detachable installation of the transparent cover 7 on the insulating housing 1. Compared with the existing small window of the adhesive structure, the connection is more stable and the service life is longer. Furthermore, the lower end face of the transparent cover 7 is fitted with the bottom of the mounting groove 103 with a clearance, and the clearance can be set to 1mm to reduce the axial installation stress generated by the threaded connection of the transparent cover 7 into the mounting groove 103. Moreover, an annular positioning block 71 is provided on the outer wall of the lower end of the transparent cover 7, and an annular lower sealing block 71 is provided on the upper end face of the insulating housing 1. The lower sealing groove is located on the outer periphery of the mounting groove 103. A lower sealing ring 105 is installed in the lower sealing groove so that when the lower end of the transparent cover 7 is threaded into the mounting groove 103, the lower end face of the transparent cover 7 abuts against the upper end face of the right half of the insulating shell 1 and squeezes the lower sealing ring 105 to buffer the axial installation stress generated by the threaded connection of the transparent cover 7 into the mounting groove 103. In summary, the lower end face of the transparent cover 7 is properly fitted with the bottom of the mounting groove 103. With the buffering effect of the lower sealing ring 105, the axial installation stress generated by the threaded connection of the transparent cover 7 into the mounting groove 103 can be stably reduced without causing stress damage to the lower end of the transparent cover 7. It should be noted that the positioning block 71 abuts against the upper end face of the right half of the insulating shell 1 and is used to determine the depth of the threaded connection of the lower end of the transparent cover 7 into the lower mounting groove 103, thus playing a positioning role.

[0034] Specifically, an elastic threaded insert 104 is pre-embedded in the mounting groove 103. The lower end of the transparent cover 7 is threadedly connected to the elastic threaded insert 104. Since the elastic threaded insert 104 is elastic, during the process of connecting the transparent cover 7 to the elastic threaded insert 104, the elastic threaded insert 104 will shrink and buffer, thereby reducing the radial installation stress at the lower end of the transparent cover 7. Furthermore, while tightening the transparent cover 7, the lower end of the transparent cover 7 can be stably connected.

[0035] Specifically, such as Figure 8As shown, an annular marking groove 5321 is provided on the upper outer wall of the isolation rod 53. The marking groove 5321 has a colored, wear-resistant coating to further serve as a reminder, preventing the connection status between the upper end of the isolation rod 53 and the upper connecting part 51 inside the transparent cover 7 from being obscured during thunderstorms or severe weather. Preferably, a connecting rod 531 is provided at the upper end of the isolation rod 53. The connecting rod 531 is fully inserted into the groove 5121 within the upper connecting part 51 and connected to the upper contact spring 515. The portion of the isolation rod 53 connected to the connecting rod 531 is designated as a marking rod 532, and the marking groove 532... 1. The marker rod 532 is located on the outer wall of the marker rod 532. When the connecting rod 531 is inserted into the groove 5121, the marker rod 532 is located outside the groove 5121 and close to the groove 5121. Once the connecting rod 531 is disengaged from the groove 5121 in the upper connecting part 51, the marker rod 532 also moves downward away from the groove 5121. The operator can judge the connection status between the upper end of the isolation rod 53 and the upper connecting part 51 by the distance of the marker rod 532 away from the groove 5121. Of course, when the upper end of the isolation rod 53 moves downward into the isolation cavity 102, the marker rod 532 will also enter the isolation cavity 102. There will be no color marking inside the transparent cover 7.

[0036] Specifically, the outer surface of the transparent housing 7 is vacuum-deposited with a hydrophobic coating, which effectively prevents water droplets from adhering to the glass surface and causing fogging. While delaying icing, the hydrophobic coating's lotus leaf effect carries away loose pollutants such as dust and pollen from the surface through liquid flow, achieving a certain degree of self-cleaning ability. The inner surface of the transparent housing 7 is covered with a PET safety explosion-proof film. Whether it is impacted or spontaneously exploded, the fragments will stick to the explosion-proof film and will not turn into sharp "glass rain" falling or splashing, greatly reducing the risk of people being cut.

[0037] Specifically, such as Figure 9As shown, both ends of the busbar 8 are configured with C-shaped openings 81. The upper part of the first contact finger base 511 in the upper connecting part 51 is threadedly connected to the C-shaped opening 81, and the port of the C-shaped opening 81 is fastened by fasteners 82. Specifically, the port of the C-shaped opening 81 is locked by bolts, nuts 9 and washers, so that the upper threaded surface of the first contact finger base 511 in the connecting part abuts against the inner threaded surface of the C-shaped opening 81, changing the electrical contact surface from threaded line contact to threaded surface contact, increasing the electrical contact surface, and at the same time solving the problem of loosening of the threads between the upper part of the first contact finger base 511 and the C-shaped opening 81 in the upper connecting part 51. It is necessary to know here that It is noted that the outer side of the second contact finger base 512 is designed with a hexagonal structure, which facilitates the operator to use tools to rotate the second contact finger base 512, so that the upper part of the first contact finger base 511 is threadedly connected to the end C-shaped opening 81 of the busbar 8; moreover, the stationary end of the vacuum interrupter 3 is also threadedly connected to the end C-shaped opening 81 of the busbar 8, and the port of the C-shaped opening 81 is locked with bolts, nuts 9 and washers, increasing the electrical contact surface and solving the problem of loosening of the threads between the stationary end of the vacuum interrupter 3 and the end C-shaped opening 81 of the busbar 8. Specifically, an insulating protective cover 11 is provided on the outside of the busbar 8. The insulating protective cover 11 is made of silicone and is used to prevent the busbar 8 from being exposed to the outside environment, for waterproofing and dustproofing.

[0038] Specifically, the upper part of the first contact finger base 511 in the upper connecting part 51 needs to be threadedly connected to the busbar 8 through the transparent cover 7. The specific installation sequence is as follows: 1. First, put the insulating protective cover 11 on the busbar 8, so that the C-shaped opening 81 at the end of the busbar 8 is threadedly connected to the stationary end of the vacuum interrupter 3. Rotate the busbar 8 and tighten it until the C-shaped opening 81 of the busbar 8 is coaxially set with the transparent cover 7; 2. Install the sealing ring 514 in the upper mounting groove 103 on the upper end face of the second contact finger base 512 in the upper connecting part 51, and enter the transparent cover 7 through the isolation cavity 102 and the bottom of the transparent cover 7. 1. The first contact finger base 511 inside the upper connecting part 51 passes through the top of the transparent cover 7, and the upper end face of the second contact finger base 512 abuts against the upper end face of the inner cavity of the transparent cover 7; 2. A nylon washer 1003, a flat washer 1002, and a spring washer 1001 are sequentially fitted into the threaded part of the upper end of the first contact finger base 511; 3. The busbar 8 is fixed, and the second contact finger base 512 is rotated using a hexagonal socket tool, so that the first contact finger base 511 is threadedly connected to the C-shaped opening 81 at the end of the busbar 8; 4. The silicone protective cover of the busbar 8 passes through the threaded locking structure at the port of the C-shaped opening 81 of the busbar 8. After the above installation, the lower connecting part 52 and the isolation rod 53 are installed to complete the installation of the disconnect switch 5.

[0039] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A high-voltage visual switch, characterized in that, It includes an insulating housing and an inlet bar, a vacuum interrupter, a circuit breaker pull rod, a disconnecting switch, and an outlet bar disposed on the insulating housing; The incoming line bar is electrically connected to the lower moving end of the vacuum interrupter, and the circuit breaker lever is connected to the moving end of the vacuum interrupter to control the on / off state of the vacuum interrupter. The disconnecting switch includes an upper connecting part, a lower connecting part, and an isolation rod. The upper connecting part is electrically connected to the upper stationary end of the vacuum interrupter via a busbar. The lower connecting part is electrically connected to the outgoing rod. The isolation rod is electrically connected to the lower connecting part. The insulating housing is provided with a transparent cover. The lower part of the upper connecting part is located in the upper part of the inner cavity of the transparent cover, and the upper part passes through the top of the transparent cover and is connected to the busbar. The upper end of the isolation rod can move inside the transparent cover and contact or separate from the lower part of the upper connecting part to control the opening and closing of the isolation switch. The transparent cover is visible 360 ​​degrees around its circumference. The lower end of the transparent cover is detachably mounted on the insulating housing. The upper part of the upper connecting part is detachably connected to the busbar.

2. The high-voltage visual switch according to claim 1, characterized in that, The upper connecting part includes an upper contact finger base and an upper contact finger spring. The lower part of the upper contact finger base is located in the upper part of the inner cavity of the transparent cover, and the upper part passes through the top of the transparent cover and is detachably connected to the busbar. The lower end face of the upper contact finger base is provided with a groove, and an upper annular groove is provided in the groove. The upper contact finger spring is provided in the upper annular groove, and the upper end of the isolation rod can be inserted into the groove and abut against the upper contact finger spring.

3. The high-voltage visual switch according to claim 2, characterized in that, The lower connecting part includes a lower contact finger base and a lower contact finger spring. The insulating housing is provided with an isolation cavity for placing the isolation pull rod. The upper end of the isolation cavity is connected to the inner cavity of the transparent cover. The lower contact finger base is detachably connected to the isolation cavity and connected to the outgoing rod. The lower contact finger base has an insertion hole along its axial direction, and a lower annular groove is provided in the insertion hole. The lower contact finger spring is disposed in the lower annular groove. The upper part of the isolation rod is slidably disposed in the insertion hole, and the outer wall of the isolation rod abuts against the lower contact finger spring.

4. The high-voltage visual switch according to claim 2, characterized in that, A sealing gasket is fitted from top to bottom on the outer side of the upper contact finger base of the busbar and the upper end face of the transparent cover; The upper end face of the lower part of the upper touch base abuts against the upper end face of the inner cavity of the transparent cover with an upper sealing ring.

5. The high-voltage visual switch according to any one of claims 1-4, characterized in that, The upper end face of the insulating shell is provided with a mounting groove with an annular structure, the lower end of the transparent cover is threaded into the mounting groove, and the lower end face of the transparent cover is in clearance fit with the bottom of the mounting groove. The outer side wall of the lower end of the transparent cover is provided with a positioning block with an annular structure, and the upper end face of the insulating shell has a lower sealing groove with an annular structure. The sealing groove is located on the outer periphery of the mounting groove, and a lower sealing ring is installed in the lower sealing groove. The lower end face of the transparent cover abuts against the upper end face of the insulating shell and abuts against the lower sealing ring.

6. The high-voltage visual switch according to claim 5, characterized in that, An elastic threaded insert is pre-embedded in the mounting groove, and the lower end of the transparent cover is threadedly connected to the elastic threaded insert.

7. The high-voltage visual switch according to claim 1, characterized in that, The upper outer wall of the isolation rod is provided with a concave annular marking groove, and the marking groove is provided with a colored wear-resistant coating.

8. The high-voltage visual switch according to claim 1, characterized in that, The outer surface of the transparent cover is coated with a hydrophobic coating, and the inner surface is covered with an explosion-proof film.

9. The high-voltage visual switch according to claim 1, characterized in that, The end of the busbar is configured with a C-shaped opening. The upper part of the upper connecting part is threaded into the C-shaped opening, and the port of the C-shaped opening is fastened by a fastener so that the upper threaded surface of the upper connecting part abuts against the inner threaded surface of the C-shaped opening.

10. The high-voltage visual switch according to claim 1, characterized in that, An insulating protective cover is fitted on the outside of the busbar.

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