Double-fracture isolating switch and GIS equipment

Abstract

The utility model discloses a double-break disconnecting switch and GIS equipment, the disconnecting switch comprises a first static contact assembly, a second static contact assembly and a moving contact assembly, and the moving contact assembly and the first static contact assembly and the second static contact assembly are separately arranged at intervals; wherein the moving contact assembly comprises a moving contact seat, a first moving conductor assembly, a second moving conductor assembly and a gear assembly, the first moving conductor assembly and the second moving conductor assembly are respectively arranged on the moving contact seat and are in sliding connection with the moving contact seat, and the gear assembly is arranged between the first moving conductor assembly and the second moving conductor assembly. The gear assembly is engaged with the first moving conductor assembly and the second moving conductor assembly, and the gear assembly can drive the first moving conductor assembly and the first static contact assembly to be switched on or switched off and drive the second moving conductor assembly and the second static contact assembly to be switched off. The extension side or the maintenance side of the GIS equipment can be independently tested, so that the influence on the running bus caused by the abnormity of the extension side or the maintenance side is avoided, and the running safety of the power station is improved.

Description

Technical Field

[0001] The present application relates to the field of power transmission and distribution equipment of electric power systems, and in particular to a double-break disconnector and a GIS device. Background Art

[0002] Larger gas-insulated metal-enclosed switchgear (GIS) is a power system component that integrates key electrical components such as circuit breakers, disconnectors, current transformers, voltage transformers, busbars and connectors in a grounded metal casing. It is mainly used in high-voltage and ultra-high-voltage power grids.

[0003] GIS equipment can be flexibly configured and expanded according to grid needs. To reduce infrastructure and operation and maintenance costs, GIS power stations are generally built in phases.

[0004] When GIS equipment is expanded, overhauled and tested, there is usually only one isolation break between the expanded GIS equipment and the operating GIS equipment. During the AC withstand voltage test after product docking, installation and overhaul, the original operating busbar needs to be powered off to avoid discharge breakdown at the isolation break and cause personal injury. This not only increases construction costs and cumbersome safety measures, but large-scale power outages may also affect the safe and stable operation of the power grid. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a double-break disconnector and GIS equipment, aiming to improve the safety of phased construction and subsequent maintenance of GIS equipment.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] On one hand, the present application discloses a double-break disconnector, comprising: a first static contact assembly, a second static contact assembly and a moving contact assembly, wherein the moving contact assembly is spaced apart from the first static contact assembly and the second static contact assembly respectively;

[0008] Among them, the moving contact assembly includes a moving contact seat, a first moving conductor assembly, a second moving conductor assembly and a gear assembly; the first moving conductor assembly is arranged on the moving contact seat and is slidably connected to the moving contact seat; the second moving conductor assembly is arranged on the moving contact seat and is slidably connected to the moving contact seat; the gear assembly is arranged between the first moving conductor assembly and the second moving conductor assembly, and the gear assembly is respectively engaged with the first moving conductor assembly and the second moving conductor assembly, and the gear assembly can drive the first moving conductor assembly and the first static contact assembly as well as the second moving conductor assembly and the second static contact assembly to close or disconnect.

[0009] In some embodiments of the present application, the first stationary contact assembly includes a first stationary contact seat, a first stationary contact and a first spring contact finger; the first stationary contact seat is provided with a first mounting hole, the first mounting hole is provided at one end of the first stationary contact seat close to the moving contact assembly, and the first mounting hole is provided with a first opening facing the first moving conductor assembly; the first stationary contact is provided in the first mounting hole, and includes a first end and a second end, the first end is connected to the first stationary contact seat, and the second end extends toward the first moving conductor assembly; the first spring contact finger is provided in the first mounting hole, the first stationary contact is inserted into the first spring contact finger, and the second end protrudes from one end of the first spring contact finger close to the first moving conductor assembly;

[0010] And / or, the second static contact assembly includes a second static contact seat, a second static contact and a second spring contact finger; the second static contact seat is provided with a second mounting hole, the second mounting hole is provided at one end of the second static contact seat close to the moving contact assembly, and the second mounting hole is provided with a second opening facing the second moving conductor assembly; the second static contact is provided in the second mounting hole, includes a third end and a fourth end, the third end is connected to the second static contact seat, and the fourth end extends toward the second moving conductor assembly; the second spring contact finger is provided in the second mounting hole, the second static contact is inserted in the second spring contact finger, and the fourth end protrudes from one end of the second spring contact finger close to the second moving conductor assembly.

[0011] In some embodiments of the present application, the end surface of the second end is configured as a curved surface protruding toward the first moving conductor component, and the end surface of the fourth end is configured as a curved surface protruding toward the second moving conductor component.

[0012] In some embodiments of the present application, the second end is located in the first mounting hole, and the fourth end is located in the second mounting hole.

[0013] In some embodiments of the present application, the moving contact assembly also includes a third spring contact finger and a fourth spring contact finger; the third spring contact finger is sleeved on the outer side of the first moving conductor assembly, and is respectively connected to the first moving conductor assembly and the moving contact seat; the fourth spring contact finger is sleeved on the outer side of the second moving conductor assembly, and is respectively connected to the second moving conductor assembly and the moving contact seat.

[0014] In some embodiments of the present application, the first moving conductor assembly includes a first active conductor, a first fixing member, a first moving contact, a first elastic reset member and a first rack; the first active conductor is arranged correspondingly to the first spring contact finger, so that when the first static contact assembly and the first moving conductor assembly are closed, the first active conductor can be electrically connected to the first spring contact finger; a third mounting hole is arranged on the first active conductor, and the third mounting hole is provided with a third opening facing the first static contact; the first fixing member is axially arranged in the third mounting hole and fixed to an end of the first active conductor away from the third opening; the first moving contact is arranged in the third mounting hole and connected to an end of the first fixing member close to the third opening, the first moving contact is arranged correspondingly to the first static contact, and the first moving contact can move along the axial direction of the first fixing member; the first elastic reset member is arranged in the third mounting hole, and abuts against an end of the first fixing member away from the third opening and the first moving contact respectively; the first rack is connected to the first active conductor, and the first rack extends along the axial direction of the third mounting hole and is meshed with the gear assembly;

[0015] And / or, the second moving conductor assembly includes a second active conductor, a second fixing member, a second moving contact, a second elastic reset member and a second rack; the second active conductor is arranged correspondingly to the second spring contact finger, so that when the second static contact assembly and the second moving conductor assembly are closed, the second active conductor can be electrically connected to the second spring contact finger; a fourth mounting hole is provided, and the fourth mounting hole is provided with a fourth opening facing the second static contact; the second fixing member is axially arranged in the fourth mounting hole and fixed to an end of the second active conductor away from the fourth opening; the second moving contact is arranged in the fourth mounting hole and connected to an end of the second fixing member close to the fourth opening, the second moving contact is arranged correspondingly to the second static contact, and can move axially along the second fixing member; the second elastic reset member is arranged in the fourth mounting hole, and abuts against an end of the second fixing member away from the fourth opening and the second moving contact respectively; the second rack is connected to the second active conductor, and the second rack extends along the axial direction of the fourth mounting hole and is meshed with the gear assembly.

[0016] In some embodiments of the present application, the end surface of the first moving contact facing the first static contact is set as an arc surface convex outwardly; the end surface of the second moving contact facing the second static contact is set as an arc surface convex outwardly.

[0017] In some embodiments of the present application, the isolating switch also includes a housing, a transmission torsion bar and an operating mechanism; the first static contact assembly, the second static contact assembly and the moving contact assembly are respectively arranged in the housing; the transmission torsion bar is transmission connected to the gear assembly; the operating mechanism is transmission connected to the transmission torsion bar for controlling the rotation of the gear assembly.

[0018] In some embodiments of the present application, the first static contact assembly also includes a first insulator, and the first static contact assembly is connected to the shell through the first insulator; the second static contact assembly also includes a second insulator, and the second static contact assembly is connected to the shell through the second insulator; the moving contact assembly also includes a third insulator, and the moving contact assembly is connected to the shell through the third insulator.

[0019] In some embodiments of the present application, the first stationary contact assembly and the second stationary contact assembly are arranged in parallel, the moving contact assembly is arranged between the first stationary contact assembly and the second stationary contact assembly, and the first moving conductor assembly and the second moving conductor assembly are arranged in parallel.

[0020] In some embodiments of the present application, the first stationary contact assembly and the second stationary contact assembly are vertically arranged, the moving contact assembly is arranged between the first stationary contact assembly and the second stationary contact assembly, and the first moving conductor assembly and the second moving conductor assembly are arranged in parallel.

[0021] On the other hand, the present application further discloses a GIS device, which includes the double-break disconnector as described in any one of the above items.

[0022] Beneficial effects:

[0023] The double-break disconnector provided in the present application is provided with a first static contact assembly, a second static contact assembly and a moving contact assembly. The moving contact assembly is spaced apart from the first static contact assembly and the second static contact assembly, respectively, so that the first static contact assembly and the second static contact assembly can be connected to the operating side and the expansion side of the GIS equipment respectively, so that by controlling the on-off of the moving contact assembly and the first static contact assembly and the second static contact assembly, a separate expansion or maintenance test of the connection side of the first static contact assembly or the connection side of the second static contact assembly can be realized, thereby improving the operation safety; the first moving conductor assembly and the first static contact assembly, as well as the second moving conductor assembly and the second static contact assembly are driven to close or disconnect through the gear assembly, thereby improving the stability and accuracy of the closing or disconnection between the first moving conductor assembly and the first static contact assembly, as well as the second moving conductor assembly and the second static contact assembly, thereby improving the service life and reliability of the disconnector to a certain extent.

[0024] The GIS equipment provided in the present application, by providing the above-mentioned isolating switch, allows the expansion side or maintenance side of the GIS equipment to be tested separately, and can avoid the abnormality on the expansion side or maintenance side from affecting the bus on the operating side, thereby improving the safety of power station operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a double-break disconnector provided in one embodiment of the present application.

[0026] Figure 2 A schematic structural diagram of a double-break disconnector in a just-closed state provided in one embodiment of the present application.

[0027] Figure 3 A schematic diagram of the connection between a first stationary contact assembly and a first moving conductor assembly provided in one embodiment of the present application.

[0028] Figure 4 A schematic structural diagram of a double-break disconnector in a closed state provided in one embodiment of the present application.

[0029] Figure 5 A schematic structural diagram of a double-break disconnector provided in another embodiment of the present application.

[0030] Figure 6 A schematic structural diagram of a first static contact assembly provided in one embodiment of the present application.

[0031] Figure 7 A schematic structural diagram of a second static contact assembly provided in one embodiment of the present application.

[0032] Figure 8 A schematic structural diagram of a moving contact assembly provided in one embodiment of the present application.

[0033] Fig. 9 A schematic structural diagram of a second moving conductor assembly provided in one embodiment of the present application.

[0034] Fig.10 A schematic structural diagram of a double-break disconnector provided in another embodiment of the present application.

[0035] Fig.11 for Fig.10 Cross-sectional view along direction BB.

[0036] Fig.12 A schematic diagram of the gear assembly.

[0037] Fig.13 for Fig.12 Cross-sectional view along CC direction.

[0038] Description of main component symbols:

[0039] 1. first stationary contact assembly; 11. first stationary contact seat; 111. first mounting hole; 112. first opening; 12. first stationary contact; 121. first end; 122. second end; 13. first spring contact finger; 14. first insulator;

[0040] 2. second stationary contact assembly; 21. second stationary contact seat; 211. second mounting hole; 212. second opening; 22. second stationary contact; 221. third end; 222. fourth end; 23. second spring contact finger; 24. second insulator;

[0041] 3. Moving contact assembly; 31. Moving contact seat; 32. First moving conductor assembly; 321. First active conductor; 3211. Third mounting hole; 3212. Third opening; 322. First fixing member; 323. First moving contact; 324. First elastic reset member; 325. First rack; 326. Fifth spring contact finger; 33. Second moving conductor assembly; 331. Second active conductor; 3311. Fourth mounting hole; 3312. Fourth opening; 332. Second fixing member; 333. Second moving contact; 334. Second elastic reset member; 335. Second rack; 336. Sixth spring contact finger; 34. Gear assembly; 341. Gear; 342. Spline shaft; 343. Bearing; 344. Gear fixing seat; 345. Gear fixing cover; 35. Third spring contact finger; 36. Fourth spring contact finger; 37. Third insulator;

[0042] 4. Shell;

[0043] 5. Transmission torsion bar;

[0044] 6. Operating mechanism;

[0045] 100. Isolating switch. DETAILED DESCRIPTION

[0046] The present application provides a double-break disconnector and GIS equipment. To make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore, cannot be understood as a limitation on the present application. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The present application provides a GIS device, which is connected on the operating side and the expansion side through a double-break isolating switch 100. By controlling the double-break isolating switch 100 to be in an open state, there is no need to shut down the GIS device during expansion or maintenance testing, thereby reducing the construction cost of the GIS power station and improving operational safety.

[0050] For details, please refer to Figure 1 and Figure 4 The double-break disconnector 100 includes a housing 4 , and an accommodating space is formed in the housing 4 .

[0051] The isolating switch 100 further includes a first stationary contact assembly 1 , a second stationary contact assembly 2 and a moving contact assembly 3 . The moving contact assembly 3 is arranged in an accommodation space in the housing 4 at intervals from the first stationary contact assembly 1 and the second stationary contact assembly 2 .

[0052] The first stationary contact assembly 1 can be connected to the operating side of the GIS equipment, and the second stationary contact assembly 2 can be connected to the expansion or maintenance side of the GIS equipment.

[0053] The first stationary contact assembly 1 can also be connected to the expansion or maintenance side of the GIS equipment, and the second stationary contact assembly 2 can be connected to the operating side of the GIS equipment.

[0054] The moving contact assembly 3 includes a third insulator 37 , a moving contact seat 31 , a first moving conductor assembly 32 , a second moving conductor assembly 33 and a gear assembly 34 .

[0055] The third insulator 37 can be a disc insulator. The third insulator 37 is fixed to the housing 4 , the fixed end of the moving contact seat 31 is connected to the third insulator 37 , and the free end of the moving contact seat 31 extends to the accommodating space in the housing 4 .

[0056] The first moving conductor assembly 32 is disposed on the moving contact seat 31 and is slidably connected to the moving contact seat 31. The second moving conductor assembly 33 is disposed on the moving contact seat 31 and is slidably connected to the moving contact seat 31. The gear assembly 34 is disposed between the first moving conductor assembly 32 and the second moving conductor assembly 33. The first moving conductor assembly 32 and the second moving conductor assembly 33 are symmetrically distributed relative to the center of the gear assembly 34. The gear assembly 34 is respectively engaged with the first moving conductor assembly 32 and the second moving conductor assembly 33. The gear assembly 34 can drive the first moving conductor assembly 32 and the second moving conductor assembly 33 to slide synchronously in opposite directions. The first moving conductor assembly 32 and the first static contact assembly 1, the second moving conductor assembly 33 and the second static contact assembly 2 can simultaneously close the GIS equipment to form a passage on the operating side and the expansion side (such as Figure 4 or the first moving conductor assembly 32 and the first static contact assembly 1, the second moving conductor assembly 33 and the second static contact assembly 2 can be disconnected at the same time, so that the disconnector 100 is in the off state (as shown in FIG. Figure 1 shown).

[0057] like Fig.12 and Fig.13 As shown, the gear assembly 34 includes a gear 341, a spline shaft 342, a bearing 343, a gear fixing seat 344 and a gear fixing cover 345. The gear 341 is fixed between the gear fixing seat 344 and the gear fixing cover 345, the spline shaft 342 is inserted into the gear 341, the spline shaft 342 is connected to the transmission torsion bar 5, and the bearing 343 is arranged between the gear 341 and the spline shaft 342 to ensure the stable rotation of the gear 341 and the spline shaft 342.

[0058] like Figure 1As shown, the isolating switch 100 is also provided with a grounding switch. When the isolating switch 100 is in the open state, a first break is formed between the first static contact assembly 1 and the moving contact assembly 3; a second break is formed between the second static contact assembly 2 and the moving contact assembly 3, and the third insulator 37 is electrically connected to the grounding switch. The moving contact assembly 3 and the grounding switch are closed, so that the moving contact assembly 3 is in a grounding state. At this time, the expansion or detection side of the GIS equipment can be tested separately, avoiding the impact on the operating busbar when an abnormality occurs on the expansion or maintenance side of the GIS equipment, thereby improving the safety of the power station operation. In addition, during the expansion of the GIS equipment, even if the first break or the second break is broken down, discharge is carried out through the moving contact assembly 3, and the other of the first break or the second break is still in an open circuit state, which is relatively safe.

[0059] like Figure 1 and Figure 6 As shown, the first static contact assembly 1 includes a first insulator 14 and a first static contact seat 11. The first insulator 14 can be a disc insulator, which has a compact structure, good insulation effect, good weather resistance, long service life, and can reduce the replacement efficiency and maintenance cost of the disconnector 100. The first insulator 14 is fixed to the housing 4 of the disconnector 100, the connecting end of the first static contact seat 11 is fixed to the first insulator 14, and the free end of the first static contact seat 11 extends in the accommodating space in the housing 4.

[0060] The first stationary contact assembly 1 also includes a first stationary contact 12 and a first spring contact finger 13. The first stationary contact seat 11 is provided with a first mounting hole 111, and the first mounting hole 111 is provided at one end of the first stationary contact seat 11 close to the moving contact assembly 3. The first mounting hole 111 extends along the moving direction of the first moving conductor assembly 32. The first mounting hole 111 is provided with a first opening 112 facing the first moving conductor assembly 32, so that the first moving conductor assembly 32 can be inserted into the first mounting hole 111 from the first opening 112 to achieve closing with the first stationary contact assembly 1. The first stationary contact 12 is provided in the first mounting hole 111, and includes a first end 121 and a second end 122. The first end 121 is connected to the first stationary contact seat 11, and forms an electrical conduction structure with the first stationary contact seat 11. The second end 122 of the first stationary contact 12 extends toward the first moving conductor assembly 32 . When the first moving conductor assembly 32 and the first stationary contact assembly 1 are closed, the second end of the first stationary contact 12 can be electrically connected to the first moving conductor assembly 32 .

[0061] The first fixed contact seat 11 is provided with a first mounting groove, the first mounting groove is arranged around the first mounting hole 111, and the first mounting groove is communicated with the first mounting hole 111. The first spring contact finger 13 is arranged in the first mounting groove, and the first spring contact finger 13 protrudes from the first mounting groove. When the first fixed contact assembly 1 and the first moving conductor assembly 32 are closed, the first moving conductor assembly 32 moves into the first mounting hole 111 and contacts with the first spring contact finger 13. The first spring contact finger 13 can ensure reliable electrical contact between the first fixed contact seat 11 and the first moving conductor assembly 32.

[0062] The first stationary contact 12 is inserted into the first spring contact finger 13 , and the second end 122 of the first stationary contact 12 protrudes from one end of the first spring contact finger 13 close to the first moving conductor assembly 32 , so that the first stationary contact 12 contacts the first moving conductor assembly 32 earlier than the first spring contact finger 13 .

[0063] Specifically, Figure 2 and Figure 3 As shown, when the first stationary contact assembly 1 and the first moving conductor assembly 32 are just closed, when the first stationary contact 12 and the first moving contact 323 are just in contact, the first spring contact finger 13 and the first active conductor 321 are not in contact yet, ensuring that the arc generated by the bus transfer current is generated and extinguished between the first stationary contact 12 and the first moving contact 323, ensuring that the first active conductor 321 is not burned.

[0064] like Figure 1 and Figure 7 As shown, the second static contact assembly 2 includes a second insulator 24 and a second static contact seat 21. The second insulator 24 can be a disc insulator. The second insulator 24 is fixed to the housing 4 of the disconnector 100, the connecting end of the second static contact seat 21 is fixed to the second insulator 24, and the free end of the second static contact seat 21 extends in the accommodating space in the housing 4.

[0065] The second stationary contact assembly 2 also includes a second stationary contact 22 and a second spring contact finger 23. The second stationary contact seat 21 is provided with a second mounting hole 211, and the second mounting hole 211 is provided at one end of the second stationary contact seat 21 close to the moving contact assembly 3. The second mounting hole 211 extends along the moving direction of the second moving conductor assembly 33. The second mounting hole 211 is provided with a second opening 212 facing the second moving conductor assembly 33. The second stationary contact 22 is provided in the second mounting hole 211, and includes a third end 221 and a fourth end 222. The third end 221 is connected to the second stationary contact seat 21, and forms an electrical conduction structure with the second stationary contact seat 21. The fourth end 222 of the second stationary contact 22 extends toward the second moving conductor assembly 33. When the second moving conductor assembly 33 and the second stationary contact assembly 2 are closed, the second stationary contact 22 can be electrically connected to the second moving conductor assembly 33.

[0066] The second fixed contact seat 21 is provided with a second mounting groove, which is arranged around the second mounting hole 211 and communicated with the second mounting hole 211. The second spring contact finger 23 is arranged in the second mounting groove and protrudes from the second mounting groove. When the second fixed contact assembly 2 and the second moving conductor assembly 33 are closed, the second moving conductor assembly 33 moves into the second mounting hole 211 and contacts with the second spring contact finger 23. The second spring contact finger 23 can ensure reliable electrical contact between the second fixed contact seat 21 and the second moving conductor assembly 33.

[0067] The second stationary contact 22 is inserted into the second spring contact finger 23 , and the fourth end 222 of the second stationary contact 22 protrudes from one end of the second spring contact finger 23 close to the second moving conductor assembly 33 , so that the second stationary contact 22 contacts the second moving conductor assembly 33 earlier than the second spring contact finger 23 .

[0068] Specifically, Figure 2 As shown, when the second stationary contact assembly 2 and the second moving conductor assembly 33 are just closed, when the second stationary contact 22 and the second moving contact 333 are in contact, the second spring contact finger 23 and the second active conductor 331 are not in contact yet, so as to ensure that the arc generated by the bus transfer current is generated and extinguished between the second stationary contact 22 and the second moving contact 333, and to ensure that the second active conductor 331 is not burned.

[0069] The end face of the second end 122 of the first stationary contact 12 is set as an arc surface protruding toward the first moving conductor component 32, and the end face of the fourth end 222 of the second stationary contact 22 is set as an arc surface protruding toward the second moving conductor component 33. When the isolating switch 100 disconnects the current, the thermal stress and mechanical wear of the arc on the surfaces of the first stationary contact 12 and the second stationary contact 22 can be reduced, thereby extending the service life of the contacts and improving the switching performance.

[0070] The second end 122 of the first static contact 12 is located in the first mounting hole 111, and the fourth end 222 of the second static contact 22 is located in the second mounting hole 211. In this way, the electrical contact end surface of the first static contact 12 is still in the first mounting hole 111 of the first static contact seat 11, and the electrical contact end surface of the second static contact 22 is still in the second mounting hole 211 of the second static contact seat 21, thereby ensuring the uniformity of the electric field and improving the insulation performance of the first break and the second break.

[0071] like Figure 8As shown, the moving contact assembly 3 further includes a third spring contact finger 35 and a fourth spring contact finger 36. The third spring contact finger 35 is sleeved on the outer side of the first moving conductor assembly 32, and is respectively connected to the first moving conductor assembly 32 and the moving contact seat 31, to ensure reliable electrical contact between the first moving conductor assembly 32 and the moving contact seat 31, and to carry the rated load current. The fourth spring contact finger 36 is sleeved on the outer side of the second moving conductor assembly 33, and is respectively connected to the second moving conductor assembly 33 and the moving contact seat 31, to ensure reliable electrical contact between the second moving conductor assembly 33 and the moving contact seat 31, and to carry the rated load current.

[0072] like Figure 8 and Fig. 9 As shown, the first moving conductor assembly 32 includes a first active conductor 321, a first fixing member 322, a first moving contact 323, a first elastic reset member 324 and a first rack 325. The first active conductor 321 is arranged corresponding to the first spring contact finger 13. When the first stationary contact assembly 1 and the first moving conductor assembly 32 are closed, the first active conductor 321 can be electrically connected to the first spring contact finger 13. A third mounting hole 3211 is provided on the first active conductor 321, and the third mounting hole 3211 is provided with a third opening 3212 facing the first static contact 12; the first fixing piece 322 is axially arranged in the third mounting hole 3211, and is fixed to an end of the first active conductor 321 away from the third opening 3212; the first moving contact 323 is arranged in the third mounting hole 3211, and is connected to an end of the first fixing piece 322 close to the third opening 3212, and the first moving contact 323 is arranged corresponding to the first static contact 12. When the first active conductor 321 and the first static contact assembly 1 are closed, the first moving contact 323 is in electrical contact with the first static contact 12 through the third opening 3212. The first moving contact 323 can move along the axial direction of the first fixing member 322, and the first elastic reset member 324 is arranged in the third mounting hole 3211, and abuts against one end of the first fixing member 322 away from the third opening 3212 and the first moving contact 323, respectively, so that when the first active conductor 321 and the first static contact assembly 1 are closed, the first fixing member 322 and the first moving contact 323 can compress the first elastic reset member 324, so as to realize the gradual closing of the first active conductor 321 and the first static contact assembly 1. When the first active conductor 321 and the first static contact assembly 1 are opened, the elastic action of the first elastic reset member 324 can act on the first moving contact 323, so that the first moving contact 323 is reset.

[0073] The first rack 325 is connected to the first active conductor 321, is disposed on the side of the first active conductor 321 facing the gear assembly 34, and is meshed with the gear assembly 34. The first rack 325 extends along the axial direction of the third mounting hole 3211. The gear assembly 34 rotates to drive the linear motion of the first rack 325, thereby realizing the closing or opening of the first moving conductor assembly 32 and the first static contact assembly 1, improving the accuracy of the movement of the first active conductor 321, and thus improving the reliability of the disconnector 100.

[0074] Furthermore, a first slot is provided on the outer peripheral wall of the first moving contact 323, and a fifth spring contact finger 326 is provided in the first slot. The outer side wall of the fifth spring contact finger 326 protrudes from the first slot. The fifth spring contact finger 326 is in electrical contact with the first moving contact 323 and the first active conductor 321, respectively, to ensure reliable electrical contact between the first moving contact 323 and the first active conductor 321.

[0075] The second moving conductor assembly 33 includes a second active conductor 331 , a second fixing member 332 , a second moving contact 333 , a second elastic reset member 334 and a second rack 335 . The second active conductor 331 is arranged correspondingly to the second spring contact finger 23. When the second static contact assembly 2 and the second moving conductor assembly 33 are closed, the second active conductor 331 can be electrically connected to the second spring contact finger 23; a fourth mounting hole 3311 is arranged on the second active conductor 331, and the fourth mounting hole 3311 is provided with a fourth opening 3312 facing the second static contact 22; the second fixing piece 332 is axially arranged in the fourth mounting hole 3311, and is fixed to an end of the second active conductor 331 away from the fourth opening 3312; the second moving contact 333 is arranged in the fourth mounting hole 3311, and is connected to an end of the second fixing piece 332 close to the fourth opening 3312. The second moving contact 333 is arranged correspondingly to the second static contact 22. When the second active conductor 331 and the second static contact assembly 2 are closed, the second moving contact 333 is electrically contacted with the second static contact 22 through the fourth opening 3312. The second moving contact 333 can move along the axial direction of the second fixing member 332, and the second elastic reset member 334 is arranged in the fourth mounting hole 3311, and abuts against one end of the second fixing member 332 away from the fourth opening 3312 and the second moving contact 333, respectively, so that when the second active conductor 331 and the second static contact assembly 2 are closed, the second fixing member 332 and the second moving contact 333 can compress the second elastic reset member 334, so as to realize the gradual closing of the second active conductor 331 and the second static contact assembly 2. When the second active conductor 331 and the second static contact assembly 2 are opened, the elastic action of the second elastic reset member 334 can act on the second moving contact 333, so that the second moving contact 333 is reset.

[0076] The second rack 335 is connected to the second active conductor 331, is disposed on the side of the second active conductor 331 facing the gear assembly 34, and is meshed with the gear assembly 34. The second rack 335 extends along the axial direction of the fourth mounting hole 3311. The gear assembly 34 rotates to drive the linear motion of the second rack 335, thereby realizing the closing or opening of the second moving conductor assembly 33 and the second static contact assembly 2, improving the accuracy of the movement of the second active conductor 331, and thus improving the reliability of the disconnector 100.

[0077] Furthermore, a second slot is provided on the outer peripheral wall of the second moving contact 333, and a sixth spring contact finger 336 is provided in the second slot. The outer side wall of the sixth spring contact finger 336 protrudes from the second slot. The sixth spring contact finger 336 is in electrical contact with the second moving contact 333 and the second active conductor 331, respectively, to ensure reliable electrical contact between the second moving contact 333 and the second active conductor 331.

[0078] In some embodiments, the first fixing member 322 and the second fixing member 332 may use positioning nuts, which have high connection stability and ensure the structural stability of the moving contact. The first elastic reset member 324 and the second elastic reset member 334 may use compression springs, which have a simple structure and are easy to replace.

[0079] The end surface of the first moving contact 323 facing the first stationary contact 12 is set as an arc surface convex outward; the end surface of the second moving contact 333 facing the second stationary contact 22 is set as an arc surface convex outward. When the current is disconnected, the arc surface structure can reduce the thermal stress and mechanical wear of the arc on the surfaces of the first moving contact 323 and the second moving contact 333, extend the service life of the contacts, and improve the switch performance.

[0080] like Fig.10 and Fig.11 As shown, the disconnector 100 further includes a transmission torsion bar 5 and an operating mechanism 6. The transmission torsion bar 5 is transmission-connected to the gear assembly 34, and the operating mechanism 6 is transmission-connected to the transmission torsion bar 5 for controlling the rotation of the gear assembly 34, thereby realizing the opening and closing of the disconnector 100.

[0081] In some embodiments, the isolating switch 100 is a single-phase isolating switch 100, the output shaft of the operating mechanism 6 is connected to the input end of the transmission torsion bar 5, and the output end of the transmission torsion bar 5 is transmission-connected to the gear assembly 34 of the moving contact assembly 3. When the isolating switch 100 is closed, the output shaft of the operating mechanism 6 rotates, and the gear 341 is driven to rotate clockwise through the transmission torsion bar 5, and the gear 341 drives the first rack 325 anchored on the first active conductor 321 and the second rack 335 on the second active conductor 331 to move linearly, so that the first moving conductor assembly 32 moves toward the left side, and the second moving conductor assembly 33 moves toward the right side, the first moving contact 323 first contacts the first static contact 12, and the second moving contact 333 first contacts the second static contact 22, and then the first moving contact 323 and the second moving contact 333 do not move, and the first active conductor 321 and the second active conductor 331 continue to move, and the isolating switch 100 is closed. When the isolating switch 100 is opened, the gear 341 rotates counterclockwise, and the movement process of the first moving conductor assembly 32 and the second moving conductor assembly 33 is opposite to the above-mentioned closing process.

[0082] In other embodiments, the isolating switch 100 is a three-phase isolating switch, the output shaft of the operating mechanism 6 is connected to the input end of the transmission torsion bar 5, and the output end of the transmission torsion bar 5 is respectively connected to the gear assembly 34 of the A-phase moving contact assembly 3, the gear assembly 34 of the B-phase moving contact assembly 3 and the gear assembly 34 of the C-phase moving contact, thereby realizing the synchronous linkage of the A-phase moving contact assembly 3, the B-phase moving contact assembly 3 and the C-phase moving contact assembly 3.

[0083] The material of the first stationary contact 12 , the second stationary contact 22 , the first moving contact 323 and the second moving contact 333 may be copper-tungsten alloy, which is resistant to arc erosion and can effectively carry the arc generated by the busbar transfer current.

[0084] The first spring contact finger 13 , the second spring contact finger 23 , the third spring contact finger 35 , the fourth spring contact finger 36 , the fifth spring contact finger 326 and the sixth spring contact finger 336 may be made of highly conductive and highly elastic beryllium copper material to ensure the stability and reliability of current conduction.

[0085] like Figure 1 , Figure 2 and Figure 4 As shown, the first static contact assembly 1 and the second static contact assembly 2 are arranged in parallel, and the connection direction of the first static contact assembly 1 and the GIS equipment on the operating side is parallel to the connection direction of the second static contact assembly 2 and the GIS equipment on the expansion side; the first static contact 12 and the second static contact 22 are arranged in parallel, the moving contact assembly 3 is arranged between the first static contact assembly 1 and the second static contact assembly 2, and the first moving conductor assembly 32 and the second moving conductor assembly 33 are arranged in parallel.

[0086] like Figure 5As shown, the first static contact assembly 1 and the second static contact assembly 2 are vertically arranged, and the connection direction of the first static contact assembly 1 and the GIS equipment on the operating side and the connection direction of the second static contact assembly 2 and the GIS equipment on the expansion side are located in two directions perpendicular to each other; the first static contact 12 and the second static contact 22 are arranged in parallel, the moving contact assembly 3 is arranged between the first static contact assembly 1 and the second static contact assembly 2, and the first moving conductor assembly 32 and the second moving conductor assembly 33 are arranged in parallel.

[0087] The above provides different wiring direction options for the isolating switch 100 , thereby improving the applicability of the isolating switch 100 .

[0088] On the other hand, the present application also discloses a GIS device, which includes a double-break disconnector 100 as described in any one of the above items, wherein the first static contact assembly 1 and the second static contact assembly 2 of the disconnector 100 are respectively connected to the operating side and the expansion side of the GIS device, so that the construction on the expansion side does not affect the normal work on the operating side, thereby improving the construction efficiency and construction safety. The specific structure of the disconnector 100 is as described above, and will not be repeated here.

[0089] To summarize, the present application arranges a first static contact assembly, a second static contact assembly and a moving contact assembly, and arranges a first moving conductor assembly, a second moving conductor assembly and a gear assembly on the moving contact assembly, and realizes synchronous closing or disconnection of the first moving conductor assembly and the first static contact assembly, and the second moving conductor assembly and the second static contact assembly through a transmission connection with an operating mechanism, so that the expansion side or maintenance side of the GIS equipment using the isolating switch can be operated and tested separately, thereby improving the construction efficiency and the operation safety of the power station.

[0090] In addition, the first moving conductor assembly and the second moving conductor assembly are driven by the gear assembly to move linearly in a direction approaching or away from the first stationary contact, thereby improving the movement stability and accuracy of the first moving conductor assembly and the second moving conductor assembly, thereby improving the reliability of the isolating switch.

[0091] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and application concept of the present application, and all these changes or substitutions should fall within the protection scope of the claims attached to the present application.

Claims

1. A double-break disconnector, characterized in that: include: A first stationary contact assembly, a second stationary contact assembly and a moving contact assembly, wherein the moving contact assembly is spaced apart from the first stationary contact assembly and the second stationary contact assembly respectively; Wherein, the moving contact assembly comprises: Moving contact seat; A first moving conductor assembly is disposed on the moving contact seat and is slidably connected to the moving contact seat; A second moving conductor assembly is disposed on the moving contact seat and is slidably connected to the moving contact seat; A gear assembly is arranged between the first moving conductor assembly and the second moving conductor assembly, and the gear assembly is respectively engaged with the first moving conductor assembly and the second moving conductor assembly, and the gear assembly can drive the first moving conductor assembly and the first static contact assembly as well as the second moving conductor assembly and the second static contact assembly to close or disconnect.

2. The double-break disconnector according to claim 1, characterized in that: The first stationary contact assembly comprises: A first stationary contact seat is provided with a first mounting hole, wherein the first mounting hole is provided at one end of the first stationary contact seat close to the moving contact assembly, and the first mounting hole is provided with a first opening facing the first moving conductor assembly; A first stationary contact, disposed in the first mounting hole, comprising a first end and a second end, wherein the first end is connected to the first stationary contact seat, and the second end extends toward the first moving conductor assembly; A first spring contact finger is disposed in the first mounting hole, the first static contact is inserted into the first spring contact finger, and the second end protrudes from an end of the first spring contact finger close to the first moving conductor assembly; and / or, The second stationary contact assembly comprises: A second stationary contact seat is provided with a second mounting hole, the second mounting hole is provided at one end of the second stationary contact seat close to the moving contact assembly, and the second mounting hole is provided with a second opening facing the second moving conductor assembly; A second stationary contact, disposed in the second mounting hole, comprising a third end and a fourth end, wherein the third end is connected to the second stationary contact seat, and the fourth end extends toward the second moving conductor assembly; The second spring contact finger is arranged in the second mounting hole, the second static contact is inserted into the second spring contact finger, and the fourth end protrudes from an end of the second spring contact finger close to the second moving conductor assembly.

3. The double-break disconnector according to claim 2, characterized in that: The end surface of the second end is configured as an arc surface protruding toward the first moving conductor component, and the end surface of the fourth end is configured as an arc surface protruding toward the second moving conductor component.

4. The double-break disconnector according to claim 2, characterized in that: The second end is located in the first mounting hole, and the fourth end is located in the second mounting hole.

5. The double-break disconnector according to any one of claims 2 to 4, characterized in that: The moving contact assembly also includes: A third spring contact finger is sleeved on the outer side of the first moving conductor assembly and is respectively connected to the first moving conductor assembly and the moving contact seat; The fourth spring contact finger is sleeved on the outer side of the second moving conductor assembly and is respectively connected to the second moving conductor assembly and the moving contact seat.

6. The double-break disconnector according to claim 5, characterized in that: The first moving conductor assembly comprises: a first active conductor, arranged corresponding to the first spring contact finger, so that when the first stationary contact assembly and the first moving conductor assembly are closed, the first active conductor can be electrically connected to the first spring contact finger; a third mounting hole is arranged on the first active conductor, and the third mounting hole is arranged with a third opening facing the first stationary contact; A first fixing member, axially disposed in the third mounting hole and fixed to an end of the first active conductor away from the third opening; a first moving contact, disposed in the third mounting hole and connected to one end of the first fixing member close to the third opening, the first moving contact being disposed corresponding to the first stationary contact, and the first moving contact being movable along the axial direction of the first fixing member; A first elastic return member is disposed in the third mounting hole and is respectively in contact with an end of the first fixing member away from the third opening and the first moving contact; A first rack connected to the first active conductor, the first rack extending along the axial direction of the third mounting hole and meshingly connected with the gear assembly; and / or, The second moving conductor assembly comprises: A second active conductor is arranged corresponding to the second spring contact finger, so that when the second stationary contact assembly and the second moving conductor assembly are closed, the second active conductor can be electrically connected to the second spring contact finger; a fourth mounting hole is provided, and the fourth mounting hole is provided with a fourth opening facing the second stationary contact; A second fixing member, axially disposed in the fourth mounting hole and fixed to an end of the second active conductor away from the fourth opening; A second moving contact, arranged in the fourth mounting hole and connected to one end of the second fixing member close to the fourth opening, the second moving contact being arranged corresponding to the second static contact and being movable along the axial direction of the second fixing member; a second elastic return member, disposed in the fourth mounting hole, and respectively abutting against an end of the second fixing member away from the fourth opening and the second moving contact; The second rack is connected to the second active conductor, and the second rack extends along the axial direction of the fourth mounting hole and is meshed with the gear assembly.

7. The double-break disconnector according to claim 6, characterized in that: The end surface of the first moving contact facing the first stationary contact is configured as an arc surface convex outwardly; and the end surface of the second moving contact facing the second stationary contact is configured as an arc surface convex outwardly.

8. The double-break disconnector according to claim 1, characterized in that: The isolating switch also includes: A housing, wherein the first stationary contact assembly, the second stationary contact assembly and the moving contact assembly are respectively arranged in the housing; A transmission torsion bar, drivingly connected to the gear assembly; The operating mechanism is connected to the transmission torsion bar and is used to control the rotation of the gear assembly.

9. The double-break disconnector according to claim 8, characterized in that: The first stationary contact assembly further includes a first insulator, and the first stationary contact assembly is connected to the housing through the first insulator; The second stationary contact assembly further includes a second insulator, and the second stationary contact assembly is connected to the housing through the second insulator; The moving contact assembly further includes a third insulator, and the moving contact assembly is connected to the housing through the third insulator.

10. The double-break disconnector according to claim 1, characterized in that: The first stationary contact assembly and the second stationary contact assembly are arranged in parallel, the moving contact assembly is arranged between the first stationary contact assembly and the second stationary contact assembly, and the first moving conductor assembly and the second moving conductor assembly are arranged in parallel.

11. The double-break disconnector according to claim 1, characterized in that: The first stationary contact assembly and the second stationary contact assembly are vertically arranged, the moving contact assembly is arranged between the first stationary contact assembly and the second stationary contact assembly, and the first moving conductor assembly and the second moving conductor assembly are arranged in parallel.

12. A GIS device, characterized in that: It comprises a double-break disconnector as described in any one of claims 1 to 11.

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