An isolating grounding switch and GIS

Abstract

This invention relates to an isolating grounding switch and a GIS (Gas Insulation System). The isolating grounding switch includes: a housing with two mechanism mounting holes on its side, arranged symmetrically in a vertical plane passing through the center line of the housing; a component mounting hole on the bottom of the housing; an isolating stationary contact seat inside the housing; an isolating moving contact assembly inside the housing, including an isolating moving contact seat and an isolating moving contact; a transmission rod mounting groove on the side of the isolating moving contact seat, arranged opposite to the corresponding mechanism mounting hole; stationary contact seat mounting grooves on the bottom and top of the isolating moving contact seat, the bottom stationary contact seat mounting groove being arranged opposite to the component mounting hole; an isolating switch operating mechanism detachably connected to the mechanism mounting hole arranged opposite to the transmission rod mounting groove; an isolating moving contact assembly detachably connected to the component mounting hole; and an grounding switch operating mechanism drivingly connected to the grounding moving contact to drive the grounding moving contact to contact and separate from the grounding stationary contact seat in the stationary contact seat mounting groove.

Description

Technical Field

[0001] This invention relates to an isolating grounding switch and a GIS. Background Technology

[0002] With the rapid development of China's market economy, its demand for electricity is increasing daily. Gas-insulated metal-enclosed switchgear (GIS), as a fundamental piece of equipment in the power system, has gained market trust due to its high parameters, integration, and stable operation. Currently, there are two types of GIS deployment.

[0003] The first layout form of GIS is as follows Figure 1 and Figure 2 As shown, the GIS includes a circuit breaker 31, two current transformers 32, and two isolating grounding switches 33. The two isolating grounding switches 33 are arranged on both sides of the axial direction of the circuit breaker 31, and the current transformers 32 are arranged between the circuit breaker 31 and the corresponding isolating grounding switches 33. Each isolating grounding switch 33 is equipped with an inspection hole 34, an isolating switch operating mechanism 35, and a grounding switch operating mechanism 36. In this arrangement, the two isolating switch operating mechanisms 35 and the two grounding switch operating mechanisms 36 are all arranged on the same side of the vertical plane passing through the center line of the circuit breaker 31, facilitating maintenance and operation of the isolating grounding switches 33 by inspection personnel in the inspection passage 37. However, since the isolating grounding switches 33 on both sides of the circuit breaker 31 are symmetrical, the specifications of the two isolating grounding switches 33 are different, which increases manufacturing costs.

[0004] The second layout form of GIS is as follows Figure 3 and Figure 4 As shown, the GIS includes a circuit breaker 41, two current transformers 42, and two isolating grounding switches 43. The two isolating grounding switches 43 are arranged on both sides of the axial direction of the circuit breaker 41, and the current transformers 42 are arranged between the circuit breaker 41 and the corresponding isolating grounding switches 43. Each isolating grounding switch 43 is equipped with an inspection hole 44, an isolating switch operating mechanism 45, and a grounding switch operating mechanism 46. In this arrangement, the two isolating grounding switches 43 are of the same specification, and one of the isolating grounding switches 43 is rotated 180° relative to the other about a vertical axis. This results in the two isolating switch operating mechanisms 45 being distributed on both sides of a vertical plane passing through the center line of the circuit breaker 41, making it inconvenient for inspection personnel to inspect the isolating grounding switches 43 and operate the mechanisms from the inspection passage 47. Summary of the Invention

[0005] The purpose of this invention is to provide a GIS that solves the technical problem in the prior art where it is impossible to simultaneously facilitate the inspection of GIS by patrol personnel and reduce the production cost of GIS; the purpose of this invention is also to provide an isolating grounding switch.

[0006] To achieve the above objectives, the technical solution of the isolating grounding switch of the present invention is as follows:

[0007] Isolating grounding switch, including:

[0008] The housing has basin-type insulators at both ends, two mechanism mounting holes on the side of the housing, the two mechanism mounting holes are arranged symmetrically in a vertical plane passing through the center line of the housing, and component mounting holes are provided at the bottom of the housing.

[0009] The isolating stationary contact seat is located inside the housing and fixed on one of the basin-type insulators;

[0010] The isolating moving contact assembly is located inside the housing and detachably connected to another basin-type insulator. The isolating moving contact assembly includes an isolating moving contact base and an isolating moving contact. The isolating moving contact is axially reciprocated within the isolating moving contact base to achieve contact and separation with the isolating stationary contact base. The side of the isolating moving contact base is provided with a transmission rod mounting groove, which is arranged opposite to one of the two mechanism mounting holes. The bottom and top of the isolating moving contact base are respectively provided with stationary contact base mounting grooves, with the bottom stationary contact base mounting groove arranged opposite to the assembly mounting hole.

[0011] The disconnector switch operating mechanism is located outside the housing and detachably connected to the mechanism mounting hole arranged opposite to the transmission rod mounting groove. The disconnector switch operating mechanism has a transmission rod, the drive end of which is located in the transmission rod mounting groove for transmission connection with the disconnecting moving contact.

[0012] A cover plate is used to seal the mechanism mounting hole, which is located opposite to the drive rod mounting slot.

[0013] Grounding stationary contact base, fixed in the stationary contact base mounting groove at the bottom;

[0014] The grounding moving contact assembly is located outside the housing and detachably connected to the assembly mounting hole. The grounding moving contact assembly includes a grounding housing and a grounding moving contact. The grounding moving contact is reciprocated vertically within the grounding housing to achieve contact and separation with the grounding stationary contact.

[0015] The grounding switch operating mechanism is connected to the grounding moving contact via a transmission mechanism.

[0016] The operating mechanisms of the disconnecting switch and the grounding switch are both located on the same side of the vertical plane passing through the center line of the housing.

[0017] The beneficial effects are as follows: Through the above design, while achieving a mirror arrangement of the isolating grounding switches on both sides of the circuit breaker, all components of the two isolating grounding switches are structurally identical, with only slight differences in the assembly direction of the components. This achieves standardized product specifications, greatly reduces the types of product parts, facilitates standardized management and mass production of components, significantly improves production efficiency, and reduces production costs. Furthermore, the design structure of the isolating grounding switch of this invention allows the operating mechanisms of the two isolating switches and the two grounding switches to be installed on the same side of the inspection channel during engineering applications, meeting the user's requirements for convenient on-site inspection and monitoring.

[0018] Furthermore, the housing is provided with an inspection hole, which is a mechanism mounting hole arranged opposite to the transmission rod mounting groove.

[0019] The beneficial effects are: it avoids the need to machine additional inspection holes on the casing, which is beneficial to the manufacturing and sealing of the casing.

[0020] Furthermore, the isolating movable contact seat is provided with an assembly hole, which is arranged opposite to the inspection hole.

[0021] The beneficial effect is that this design facilitates maintenance operations.

[0022] Furthermore, the isolating contact seat is integrally formed with a break shielding structure.

[0023] The beneficial effects are: the break-out shielding structure is integrally molded on the isolation moving contact base, the structure is simple, there are fewer parts, the assembly workload is reduced, and the production efficiency of the product is greatly improved.

[0024] Furthermore, the isolating static contact seat has a cover structure.

[0025] The beneficial effect is that the cover structure can achieve a shielding effect to shield the electric field at the break.

[0026] To achieve the above objectives, the technical solution of the GIS of this invention is as follows:

[0027] GIS, including a circuit breaker, wherein an isolating grounding switch is provided on each of the two axial sides of the circuit breaker, the isolating grounding switch comprising:

[0028] The housing has basin-type insulators at both ends, two mechanism mounting holes on the side of the housing, the two mechanism mounting holes are arranged symmetrically in a vertical plane passing through the center line of the housing, and component mounting holes are provided at the bottom of the housing.

[0029] The isolating stationary contact seat is located inside the housing and fixed on one of the basin-type insulators;

[0030] The isolating moving contact assembly is located inside the housing and detachably connected to another basin-type insulator. The isolating moving contact assembly includes an isolating moving contact base and an isolating moving contact. The isolating moving contact is axially reciprocated within the isolating moving contact base to achieve contact and separation with the isolating stationary contact base. The side of the isolating moving contact base is provided with a transmission rod mounting groove, which is arranged opposite to one of the two mechanism mounting holes. The bottom and top of the isolating moving contact base are respectively provided with stationary contact base mounting grooves, with the bottom stationary contact base mounting groove arranged opposite to the assembly mounting hole.

[0031] The disconnector switch operating mechanism is located outside the housing and detachably connected to the mechanism mounting hole arranged opposite to the transmission rod mounting groove. The disconnector switch operating mechanism has a transmission rod, the drive end of which is located in the transmission rod mounting groove for transmission connection with the disconnecting moving contact.

[0032] A cover plate is used to seal the mechanism mounting hole, which is located opposite to the drive rod mounting slot.

[0033] Grounding stationary contact base, fixed in the stationary contact base mounting groove at the bottom;

[0034] The grounding moving contact assembly is located outside the housing and detachably connected to the assembly mounting hole. The grounding moving contact assembly includes a grounding housing and a grounding moving contact. The grounding moving contact is reciprocated vertically within the grounding housing to achieve contact and separation with the grounding stationary contact.

[0035] The grounding switch operating mechanism is connected to the grounding moving contact via a transmission mechanism.

[0036] One of the isolating grounding switches rotates 180° relative to the other isolating grounding switch about a horizontal axis, and the grounding moving contact assembly of the former isolating grounding switch rotates 180° relative to the grounding moving contact assembly of the latter isolating grounding switch about a vertical axis, so that the operating mechanisms of the two isolating switches and the operating mechanisms of the two grounding switches are all located on the same side of a vertical plane passing through the center line of the housing.

[0037] The beneficial effects are as follows: Through the above design, while achieving a mirror arrangement of the isolating grounding switches on both sides of the circuit breaker, all components of the two isolating grounding switches are structurally identical, with only slight differences in the assembly direction of the components. This achieves standardized product specifications, greatly reduces the types of product parts, facilitates standardized management and mass production of components, significantly improves production efficiency, and reduces production costs. Furthermore, the design structure of the isolating grounding switch of this invention allows the operating mechanisms of the two isolating switches and the two grounding switches to be installed on the same side of the inspection channel during engineering applications, meeting the user's requirements for convenient on-site inspection and monitoring.

[0038] Furthermore, the housing is provided with an inspection hole, which is a mechanism mounting hole arranged opposite to the transmission rod mounting groove.

[0039] The beneficial effects are: it avoids the need to machine additional inspection holes on the casing, which is beneficial to the manufacturing and sealing of the casing.

[0040] Furthermore, the isolating movable contact seat is provided with an assembly hole, which is arranged opposite to the inspection hole.

[0041] The beneficial effect is that this design facilitates maintenance operations.

[0042] Furthermore, the isolating contact seat is integrally formed with a break shielding structure.

[0043] The beneficial effects are: the break-out shielding structure is integrally molded on the isolation moving contact base, the structure is simple, there are fewer parts, the assembly workload is reduced, and the production efficiency of the product is greatly improved.

[0044] Furthermore, the isolating static contact seat has a cover structure.

[0045] The beneficial effect is that the cover structure can achieve a shielding effect to shield the electric field at the break. Attached Figure Description

[0046] Figure 1 This is the first layout form of GIS in the prior art;

[0047] Figure 2 for Figure 1 Top view;

[0048] Figure 3 This is the main view of the second layout form of GIS in the prior art;

[0049] Figure 4 for Figure 3 Top view;

[0050] Figure 5 This is a schematic diagram of the structure of Embodiment 1 of the isolating grounding switch of the present invention;

[0051] Figure 6 for Figure 5 Top view;

[0052] Figure 7 for Figure 5 The right view;

[0053] Figure 8 Front view of the moving contact assembly with two isolating ground switches installed on both sides of the circuit breaker;

[0054] Figure 9 for Figure 8 Top view;

[0055] Figure 1 and Figure 2 In the middle: 31. Circuit breaker; 32. Current transformer; 33. Disconnecting grounding switch; 34. Inspection hole; 35. Disconnecting switch operating mechanism; 36. Grounding switch operating mechanism; 37. Inspection passage;

[0056] Figure 3 and Figure 4 In the middle: 41. Circuit breaker; 42. Current transformer; 43. Disconnecting grounding switch; 44. Inspection hole; 45. Disconnecting switch operating mechanism; 46. Grounding switch operating mechanism; 47. Inspection passage;

[0057] Figures 5 to 9 Components: 1. Housing; 2. Isolating moving contact assembly; 3. Isolating stationary contact seat; 4. Grounding moving contact assembly; 5. Grounding stationary contact seat; 6. Disconnecting switch operating mechanism; 7. Grounding switch operating mechanism; 8. Front mechanism mounting hole; 9. Rear mechanism mounting hole; 10. Assembly mounting hole; 11. Right basin insulator; 12. Left basin insulator; 13. Isolating moving contact seat; 14. Isolating moving contact; 15. Gear shaft; 16. Rack; 17. Break-out shielding structure; 18. Contact finger; 19. Upper stationary contact seat mounting slot; 20. Lower stationary contact seat mounting slot; 21. Rear ball bearing; 22. Front ball bearing; 23. Drive rod; 24. Cover plate; 25. Assembly hole; 26. Drive rod mounting slot; 27. Grounding moving contact. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0060] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, the terms "above" and "below" are based on the orientation and positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention, not to indicate that the referred device or component must have a specific orientation, and therefore should not be construed as limiting the invention.

[0061] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0062] Embodiment 1 of the isolating grounding switch of the present invention:

[0063] like Figures 5 to 7 As shown, the isolating grounding switch includes a housing 1, which extends in the left-right direction. The left and right ends of the housing 1 are respectively provided with a left basin-type insulator 12 and a right basin-type insulator 11. The front and rear sides of the housing 1 are respectively provided with a front mechanism mounting hole 8 and a rear mechanism mounting hole 9. The front mechanism mounting hole 8 and the rear mechanism mounting hole 9 are arranged symmetrically in a vertical plane passing through the center line of the housing 1. The bottom of the housing 1 is provided with a component mounting hole 10.

[0064] In this embodiment, an isolating stationary contact base 3 and an isolating moving contact assembly 2 are arranged at intervals along the left and right directions inside the housing 1. The isolating stationary contact base 3 is detachably connected to the left basin-type insulator 12 by screws, and the isolating moving contact assembly 2 is detachably connected to the right basin-type insulator 11 by screws. The isolating stationary contact base 3 is a cover structure, which can achieve a shielding effect to shield the electric field at the break.

[0065] like Figure 8 and Figure 9 As shown, the isolating moving contact assembly 2 includes an isolating moving contact seat 13 and an isolating moving contact 14. The isolating moving contact 14 is axially reciprocated and assembled in the isolating moving contact seat 13 to achieve contact and separation with the isolating stationary contact seat 3. The front side of the isolating moving contact seat 13 is provided with a transmission rod mounting groove 26, which is arranged opposite to the mechanism mounting hole on the front side. The mechanism mounting hole on the rear side is covered by a cover plate 24.

[0066] In this embodiment, the mechanism mounting hole located on the rear side constitutes a maintenance hole, avoiding the need for additional machining of maintenance holes on the housing 1, which is beneficial to the manufacturing of the housing 1. The isolating movable contact seat 13 is provided with an assembly hole 25, which is arranged opposite to the maintenance hole to facilitate maintenance operations.

[0067] In this embodiment, a contact finger 18 is provided between the isolating moving contact 14 and the isolating moving contact base 13 to ensure contact flow between the isolating moving contact 14 and the isolating moving contact base 13.

[0068] In this embodiment, a break shielding structure 17 is integrally formed on the isolating moving contact base 13. The break shielding structure 17 is used to shield the electric field at the break to optimize the electric field at the break. The break shielding structure 17 is integrally formed on the isolating moving contact base 13, which adopts an integral casting structure. The structure is simple, with fewer parts, reducing the amount of assembly work and greatly improving the production efficiency of the product.

[0069] like Figure 8 and Figure 9 As shown, the bottom and top of the isolating moving contact seat 13 are respectively provided with a lower stationary contact seat mounting groove 20 and an upper stationary contact seat mounting groove 19, and the component mounting hole 10 is arranged opposite to the stationary contact seat mounting groove at the bottom; a grounding stationary contact seat 5 is provided in the stationary contact seat mounting groove at the bottom.

[0070] In this embodiment, a grounding movable contact assembly 4 is provided on the outside of the housing 1, and the grounding movable contact assembly 4 is detachably connected to the assembly mounting hole 10 by screws; as Figure 5 As shown, the grounding moving contact assembly 4 includes a grounding housing and a grounding moving contact 27. The grounding moving contact 27 is reciprocated vertically within the grounding housing to achieve contact and separation with the grounding stationary contact 5. The grounding moving contact 27 is driven to reciprocate by the grounding switch operating mechanism 7.

[0071] like Figure 6 and Figure 7 As shown, the exterior of the housing 1 is provided with a disconnecting switch operating mechanism 6. The disconnecting switch operating mechanism 6 is detachably connected to the mechanism mounting hole on the front side by screws. The disconnecting switch operating mechanism 6 has a transmission rod 23. The driving end of the transmission rod 23 is located in the transmission rod mounting groove 26. The transmission rod 23 is connected to the disconnecting moving contact 14 through a gear and rack mechanism to drive the disconnecting moving contact 14 to reciprocate.

[0072] like Figure 8As shown, the gear and rack mechanism includes a gear shaft 15 and a rack 16. A gear is coaxially mounted on the gear shaft 15, and the gear meshes with the rack 16. The isolating movable contact 14 has a cavity, and the rack 16 is fixed to the cavity of the isolating movable contact 14 by bolts. Both ends of the gear shaft 15 are rotatably mounted on the isolating movable contact 14 via a front ball bearing 22 and a rear ball bearing 21, respectively. The front end of the gear shaft 15 is connected to the rear end (i.e., the drive end) of the transmission rod 23 within the transmission rod mounting groove 26.

[0073] The assembly structure of the present invention when the isolating grounding switch is arranged on the left side of the circuit breaker is as follows: Figure 8 The left image and Figure 9 As shown in the left figure, the disconnector operating mechanism 6 is installed at the front mechanism mounting hole 8. The rack 16 is located below the gear shaft 15. The disconnector operating mechanism 6 drives the gear shaft 15 to rotate clockwise, and the rack 16 and the disconnecting moving contact 14 move horizontally to the left, thus closing the disconnector. The disconnector operating mechanism 6 drives the gear shaft 15 to rotate counterclockwise, thus opening the disconnector. The grounding stationary contact 5 is assembled in the lower stationary contact mounting groove 20, which is arranged opposite to the component mounting hole 10. The grounding switch operating mechanism 7 drives the grounding moving contact 27 to contact and separate from the grounding stationary contact 5. At this time, the rear mechanism mounting hole 9 constitutes a maintenance hole.

[0074] The assembly structure of the present invention when the isolating grounding switch is arranged on the right side of the circuit breaker is as follows: Figure 8 The right image and Figure 9 As shown in the right figure, the disconnector operating mechanism 6 is installed at the rear mechanism mounting hole 9. The rack 16 is located above the gear shaft 15. The disconnector operating mechanism 6 drives the gear shaft 15 to rotate clockwise, and the rack 16 and the disconnecting moving contact 14 move horizontally to the right to close the disconnector. The disconnector operating mechanism 6 drives the gear shaft 15 to rotate counterclockwise to open the disconnector. The grounding stationary contact 5 is assembled in the upper stationary contact mounting groove 19, which is arranged opposite to the component mounting hole 10. The grounding switch operating mechanism 7 drives the grounding moving contact 27 to contact and separate from the grounding stationary contact 5. At this time, the front mechanism mounting hole 8 constitutes a maintenance hole.

[0075] It should be noted that the isolating moving contact of the isolating grounding switch on the left side of the circuit breaker is rotated 180° relative to the isolating moving contact of the isolating grounding switch on the right side of the circuit breaker about the horizontal axis, and the grounding moving contact assembly of the isolating grounding switch on the left side of the circuit breaker is rotated 180° relative to the grounding moving contact assembly of the isolating grounding switch on the right side of the circuit breaker about the vertical axis, so that the two isolating switch operating mechanisms 6 and the two grounding switch operating mechanisms 7 are all located on the same side of the vertical plane passing through the center line of the housing 1.

[0076] Through the above design, when the isolating grounding switches are arranged mirror images on both sides of the circuit breaker, the structures of all components of the two isolating grounding switches are completely identical, with only slight differences in the assembly direction of the components. This achieves standardized design of product specifications, greatly reduces the types of product parts, facilitates standardized management and mass production of components, significantly improves production efficiency, and reduces production costs. Furthermore, the design structure of the isolating grounding switch of this invention allows the isolating switch operating mechanism and the grounding switch operating mechanism to be installed on the same side of the inspection channel during engineering applications, meeting the user's requirements for convenient on-site inspection and monitoring.

[0077] Embodiment 2 of the isolating grounding switch of the present invention:

[0078] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the housing 1 is provided with an inspection hole, which is a mechanism mounting hole arranged opposite to the transmission rod mounting groove; that is, the mechanism mounting hole is used as an inspection hole. In this embodiment, the housing is provided with an inspection hole, which is independently located on the housing.

[0079] Embodiment 3 of the isolating grounding switch of the present invention:

[0080] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the break-out shielding structure 17 is integrally formed on the isolating moving contact seat 13. In this embodiment, the break-out shielding structure and the isolating moving contact seat are processed separately and then fixed together with bolts.

[0081] In an embodiment of the GIS of the present invention, the GIS includes a circuit breaker, and an isolating grounding switch is provided on both sides of the axial direction of the circuit breaker. The isolating grounding switch has the same structure as any one of the embodiments 1 to 3 of the above-mentioned isolating grounding switch, and will not be described again here.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An isolating grounding switch, characterized in that, include: The housing (1) has basin-type insulators at both ends. The side of the housing (1) has two mechanism mounting holes. The two mechanism mounting holes are arranged symmetrically with respect to the vertical plane passing through the center line of the housing (1). The bottom of the housing (1) has component mounting holes (10). The isolating stationary contact seat (3) is located inside the housing (1) and fixed on one of the basin insulators; The isolating moving contact assembly (2) is located inside the housing (1) and detachably connected to another basin-type insulator. The isolating moving contact assembly (2) includes an isolating moving contact seat (13) and an isolating moving contact (14). The isolating moving contact (14) is axially reciprocated and assembled in the isolating moving contact seat (13) to achieve contact and separation with the isolating stationary contact seat (3). The side of the isolating moving contact seat (13) is provided with a transmission rod mounting groove (26). The transmission rod mounting groove (26) is arranged opposite to one of the two mechanism mounting holes. The bottom and top of the isolating moving contact seat (13) are respectively provided with stationary contact seat mounting grooves. The stationary contact seat mounting groove at the bottom is arranged opposite to the component mounting hole (10). The disconnector switch operating mechanism (6) is located outside the housing (1) and is detachably connected to the mechanism mounting hole arranged opposite to the transmission rod mounting groove (26). The disconnector switch operating mechanism (6) has a transmission rod (23), the driving end of which is located in the transmission rod mounting groove (26) to be connected to the disconnector moving contact (14) in a transmission manner. Cover plate (24) is used to seal the mechanism mounting hole located opposite to the drive rod mounting groove (26); Grounding stationary contact seat (5) is fixed in the stationary contact seat mounting groove at the bottom; The grounding moving contact assembly (4) is located outside the housing (1) and is detachably connected to the assembly mounting hole (10). The grounding moving contact assembly (4) includes a grounding housing (1) and a grounding moving contact (27). The grounding moving contact (27) is reciprocated in the vertical direction and assembled inside the grounding housing (1) to achieve contact and separation with the grounding stationary contact seat (5). The grounding switch operating mechanism (7) is connected to the grounding moving contact (27) via a transmission connection; Among them, the disconnecting switch operating mechanism (6) and the grounding switch operating mechanism (7) are both located on the same side of the vertical plane passing through the center line of the housing (1) and both extend towards the inspection side; During mirror assembly, the isolating moving contact seat is rotated 180° around the horizontal axis, the grounding moving contact assembly is rotated 180° around the vertical axis, the isolating switch operating mechanism is installed in another mechanism mounting hole, and the grounding stationary contact seat is fixed in another stationary contact seat mounting slot.

2. The isolating grounding switch according to claim 1, characterized in that, The housing (1) is provided with an inspection hole, which is a mechanism mounting hole arranged opposite to the transmission rod mounting groove (26).

3. The isolating grounding switch according to claim 2, characterized in that, The isolating moving contact seat (13) is provided with an assembly hole (25), which is arranged opposite to the inspection hole.

4. The isolating grounding switch according to claim 1, 2, or 3, characterized in that, The isolation contact seat (13) has an integrally formed break shielding structure (17).

5. The isolating grounding switch according to claim 1, 2, or 3, characterized in that, The isolation static contact seat (3) is a cover structure.

6. A GIS, comprising a circuit breaker, wherein an isolating grounding switch is provided on each of the axial sides of the circuit breaker, characterized in that, The isolating grounding switch includes: The housing (1) has basin-type insulators at both ends. The side of the housing (1) has two mechanism mounting holes. The two mechanism mounting holes are arranged symmetrically with respect to the vertical plane passing through the center line of the housing (1). The bottom of the housing (1) has component mounting holes (10). The isolating stationary contact seat (3) is located inside the housing (1) and fixed on one of the basin insulators; The isolating moving contact assembly (2) is located inside the housing (1) and detachably connected to another basin-type insulator. The isolating moving contact assembly (2) includes an isolating moving contact seat (13) and an isolating moving contact (14). The isolating moving contact (14) is axially reciprocated and assembled in the isolating moving contact seat (13) to achieve contact and separation with the isolating stationary contact seat (3). The side of the isolating moving contact seat (13) is provided with a transmission rod mounting groove (26). The transmission rod mounting groove (26) is arranged opposite to one of the two mechanism mounting holes. The bottom and top of the isolating moving contact seat (13) are respectively provided with stationary contact seat mounting grooves. The stationary contact seat mounting groove at the bottom is arranged opposite to the component mounting hole (10). The disconnector switch operating mechanism (6) is located outside the housing (1) and is detachably connected to the mechanism mounting hole arranged opposite to the transmission rod mounting groove (26). The disconnector switch operating mechanism (6) has a transmission rod (23), the driving end of which is located in the transmission rod mounting groove (26) to be connected to the disconnector moving contact (14) in a transmission manner. Cover plate (24) is used to seal the mechanism mounting hole located opposite to the drive rod mounting groove (26); Grounding stationary contact seat (5) is fixed in the stationary contact seat mounting groove at the bottom; The grounding moving contact assembly (4) is located outside the housing (1) and is detachably connected to the assembly mounting hole (10). The grounding moving contact assembly (4) includes a grounding housing (1) and a grounding moving contact (27). The grounding moving contact (27) is reciprocated in the vertical direction and assembled inside the grounding housing (1) to achieve contact and separation with the grounding stationary contact seat (5). The grounding switch operating mechanism (7) is connected to the grounding moving contact (27) via a transmission connection; One of the isolating grounding switches has its isolating moving contact (13) rotated 180° relative to the other isolating grounding switch's isolating moving contact (13) about a horizontal axis, and the grounding moving contact assembly (4) of the former isolating grounding switch has its grounding moving contact assembly (4) rotated 180° relative to the latter isolating grounding switch's grounding moving contact assembly (4) about a vertical axis, so that both isolating switch operating mechanisms (6) and both grounding switch operating mechanisms (7) are located on the same side of the vertical plane passing through the center line of the housing (1) and both extend toward the inspection side.

7. The GIS according to claim 6, characterized in that, The housing (1) is provided with an inspection hole, which is a mechanism mounting hole arranged opposite to the transmission rod mounting groove (26).

8. The GIS according to claim 7, characterized in that, The isolating moving contact seat (13) is provided with an assembly hole (25), which is arranged opposite to the inspection hole.

9. The GIS according to claim 6, 7, or 8, characterized in that, The isolation contact seat (13) has an integrally formed break shielding structure (17).

10. The GIS according to claim 6, 7, or 8, characterized in that, The isolation static contact seat (3) is a cover structure.

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