Sealing structure of solid insulation switch cabinet

Abstract

A sealing structure of a solid insulation switch cabinet is characterized in that a transmission device and an operating mechanism cover are sealed and protected through a sealing case, a plurality of synchronous rotating shafts corresponding to operating shafts of the operating mechanism, mounting through holes and sealing bearing assemblies are arranged on a panel, and the synchronous rotating shafts are detachably and synchronously connected with the operating shafts in a rotating mode. A worker can drive the operation shaft in the sealing machine box to rotate by controlling the synchronous rotating shaft to rotate on the outer side end face of the panel, and therefore the purpose of manual operation is achieved. And compared with the design scheme that the operation shaft penetrates through the panel, under the arrangement of the sealing bearing assembly and the synchronous rotating shaft preassembled on the panel, the sealing performance is more reliable, the protection effect can be remarkably improved, and the panel is convenient to disassemble and assemble. Through the linkage structure design of the grounding interlocking separation blade, the isolation lower door interlocking piece, the lower door interlocking piece, the auxiliary interlocking separation blade and the isolation interlocking separation blade, and the structure design of each synchronous rotating shaft, the interlocking function is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of solid insulation switches, and in particular to a sealing structure of a solid insulation switch cabinet. Background Art

[0002] The structure of traditional ring main unit is as shown in the attached manual. Figure 1 As shown, the rear side of the chassis is connected to several groups of high-voltage vacuum switch units, a transmission device is set inside the chassis, and an operating mechanism is exposed on the front side of the chassis. This exposed operating mechanism has the problem of low protection level.

[0003] The existing technology improves the protection level by enlarging the chassis to cover the operating mechanism. However, this simple method of enlarging the chassis has the following technical problems:

[0004] 1. Simply covering the operating mechanism makes it difficult to observe the changes in the indicator signs of each state. When manual operation is required, the chassis must be opened, which not only complicates the operation but also causes the protection to fail during the opening process. 2. The layout design of the operating mechanism of the traditional structure is bloated and takes up a large space, especially the vertically arranged spring energy storage operating mechanism. 2. After the traditional structure is changed, the interlocking mechanism of the traditional structure cannot be set in the box. Adaptive improvement design is required to adapt it to the new structure while maintaining the interlocking function. Summary of the Invention

[0005] In order to solve the above technical deficiencies, the present invention provides a sealing structure for a solid insulation switch cabinet.

[0006] The technical solution of the present invention is: a sealing structure of a solid insulation switch cabinet, comprising a sealed chassis, an operating mechanism, a transmission device, an interlocking mechanism, and a plurality of high-voltage vacuum switch units arranged on the rear side of the sealed chassis, the high-voltage vacuum switch units comprising a solid insulation cylinder, the sealed chassis comprising a back plate sealedly fixed to the solid insulation cylinder, and a panel opposite to the back plate, the panel being detachably sealedly connected to the sealed chassis and comprising an inner end surface facing the sealed chassis and an outer end surface facing away from the sealed chassis;

[0007] The sealed chassis is provided with a transmission device and an operating mechanism that cooperate with the solid insulating cylinder. The panel is provided with a plurality of synchronous rotating shafts, mounting through holes, and sealed bearing assemblies at each operating shaft of the operating mechanism corresponding to the panel. The mounting through holes penetrate the panel and connect the inside and outside of the sealed chassis. The synchronous rotating shaft passes through the mounting through holes to perform axial fixed circumferential rotation cooperation, including a connecting end and an operating end. The connecting end is located on the inner end face and is detachably connected to the operating shaft for synchronous rotation. The operating end is located on the outer end face.

[0008] The sealed bearing assembly is arranged between the synchronous rotating shaft and the mounting through hole, and the interlocking mechanism is arranged on the outer end surface of the panel and cooperates with the synchronous rotating shaft.

[0009] The utility model is further provided with: the mounting through hole is a countersunk through hole, and a thickened flange connected with the mounting through hole is provided on the inner end surface of the panel corresponding to the countersunk through hole;

[0010] The sealed bearing assembly includes a first sealing ring, a bearing, and a bearing positioning ring, and the bearing and the bearing positioning ring are arranged at the countersunk through hole; a sealing groove is coaxially arranged on the synchronous rotating shaft, and the first sealing ring is sleeved and connected with the sealing groove.

[0011] By adopting the above technical solution, in order to reduce the panel thickness and meet the thickness requirements for installing the sealed bearing assembly, a thickened flange is set at the installation through hole to form a countersunk through hole structural design, which is only locally thickened at the installation point, meeting the requirements while maximizing the reduction of the panel thickness.

[0012] The utility model is further configured as follows: a sealing ring groove and a second sealing ring are provided on the inner end surface of the panel along the edge contour; the sealing ring groove conflicts with the end surface of the box opening of the sealed chassis mounting panel; each mounting through-hole is located in the sealing ring groove; the panel is provided with a plurality of first bolt holes on the radially outer side of the sealing ring groove; the end surface of the sealed chassis box opening is provided with a plurality of second bolt holes corresponding to the positions of the first bolt holes; the panel is detachably fixedly connected to the end surface of the box opening by bolts, and the second sealing ring is clamped;

[0013] The back plate is provided with a plurality of third bolt holes for detachably fixing with the solid insulating tube, and the back plate is provided with openings for the insulating rods of the solid insulating tube isolation knife and the vacuum interrupter rod to pass through;

[0014] A mechanism mounting bracket is provided in the sealed chassis, which divides the inner cavity of the sealed chassis into a transmission mounting side for mounting the transmission device and an operation mounting side for mounting the operating mechanism. The operating mechanism includes a circuit breaker spring energy storage operating mechanism and an isolating switch manual operating mechanism. The circuit breaker spring energy storage operating mechanism and the isolating switch manual operating mechanism are modularly designed and both include a mounting base. A detachable fixed connection is made between the mounting base and the partition.

[0015] By adopting the above technical solution, through the sealing ring groove and the second sealing ring design of the panel, when the panel is closed and installed, the second sealing ring is in full contact and pressure with the end face where the box opening is located along the panel contour, forming a full circle seal on the original contour of the panel.

[0016] The back plate is fixed to the end face of the solid insulation tube where the tube mouth is located by screws, and the sealing is achieved by utilizing the material of the end face where the tube mouth is located and the back face, or by similarly installing a third sealing ring along the contour. The insulating pull rod of the isolation knife and the pull rod of the vacuum interrupter are connected to the transmission device through the through hole, and then linked to the operating mechanism.

[0017] The utility model is further configured as follows: a groove is provided on the end face of the connection end of the synchronous rotating shaft; each operating shaft of the operating mechanism is coaxially arranged with each synchronous rotating shaft; and corresponding to the groove of each synchronous rotating shaft, a protrusion coaxially spliced ​​with each synchronous rotating shaft is provided; the synchronous rotating shaft is assembled with the panel and spliced ​​with each operating shaft to make a synchronous rotation connection.

[0018] By adopting the above technical solution, each operating shaft and each synchronous rotating shaft can be quickly and detachably connected through the concave-convex splicing method. The groove and convex block can be set to a straight line, polygonal or other structure that utilizes synchronous rotation transmission.

[0019] The utility model is further configured as follows: protrusions or grooves are mirror-imaged on the adjacent end faces of the synchronous rotating shaft and the operating shaft, an adapter sleeve is provided between the synchronous rotating shaft and the operating shaft, and the axial ends of the adapter sleeve are respectively spliced ​​with the synchronous rotating shaft and the operating shaft kit.

[0020] By adopting the above technical solution, when the operating shaft and the synchronous rotating shaft cannot be directly spliced ​​together, an adapter sleeve can be provided for connecting transmission.

[0021] The utility model is further provided with: the operating mechanism includes a circuit breaker spring energy storage operating mechanism and an isolating switch manual operating mechanism;

[0022] The manual operating mechanism of the isolating switch includes an isolation upper shaft, an isolation lower shaft, a grounding closing shaft, and a grounding separating shaft, which are linked with the isolation knife switch of the solid insulation cylinder;

[0023] The circuit breaker spring energy storage operating mechanism includes a permanent magnet DC reduction motor operating shaft that cooperates with the isolation knife insulation pull rod 52, an energy storage indication shaft, a trip coil rotating shaft, a closing coil rotating shaft, a closing coil manual paddle connecting shaft, an auxiliary switch, and an auxiliary switch rotating shaft;

[0024] The interlocking mechanism includes several groups of sliding brackets, a grounding interlocking block, an isolation lower door interlocking block, a lower door interlocking member, an auxiliary interlocking block, and an isolation interlocking block;

[0025] The grounding sub-rotating shaft rotates synchronously with the rotation angle of the isolation upper shaft, pushes and pulls the grounding interlocking baffle, and drives the grounding interlocking baffle to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft;

[0026] The auxiliary switch shaft rotates synchronously with the rotation angle of the auxiliary switch output shaft, pushing or pulling the auxiliary interlocking baffle, driving the auxiliary interlocking baffle to cover or release the operating end of the synchronous shaft at the lower shaft;

[0027] The grounding closing shaft rotates synchronously with the rotation angle of the lower isolation shaft, pushes and pulls the isolation interlock baffle, drives the isolation interlock baffle to cover or let go of the operating end of the synchronous shaft at the upper isolation shaft, and drives the isolation interlock baffle to enter or exit the rotation path of the closing coil shaft.

[0028] By adopting the above technical solution, when the position of the isolating knife switch (or isolating switch) in the solid insulating cylinder changes, the isolating knife pull rod connected to the isolating knife switch forms two kinds of movement, pushing and pulling. The transmission device changes the direction of the push-pull force of the isolation to the pull rod through the design of the large shaft swing arm and the bevel gear group, and converts it into clockwise and counterclockwise rotation of the isolation main shaft. The isolation main shaft swing arm arranged on the isolation main shaft drives the rotation of the isolation upper shaft and the isolation lower shaft respectively according to its two rotation angles in the forward and reverse directions. Similarly, the staff controls the opening and closing states of the isolation knife switch in reverse by operating the synchronous rotating shafts at the isolation upper shaft and the isolation lower shaft.

[0029] The grounding engaging shaft and the grounding splitting shaft are linked with the interlocking cams on the cam-isolated upper shaft and the isolated lower shaft through the cam pusher. The grounding engaging shaft and the grounding splitting shaft serve as transmission parts and rotate according to the rotation angle of the isolated upper shaft and the isolated lower shaft, thereby displaying the angular status of the isolated upper shaft and the isolated lower shaft.

[0030] When the vacuum interrupter 54 within the solid insulation tube changes state, its isolating blade insulating rod 52 (vacuum tube rod) undergoes both pushing and pulling motions. The transmission mechanism, through components such as the small shaft swing arm, forward and reverse screws, spherical bearings, and the circuit breaker operating mechanism's crank arm, changes the direction of the force, thereby driving the circuit breaker's two main shafts in clockwise and counterclockwise rotation. The energy storage indicator shaft, the closing current shaft, and the auxiliary switch shaft all rotate in accordance with the circuit breaker operating mechanism's state. Conversely, personnel manually control the circuit breaker operating mechanism and the insulating material rod's state through reverse operation.

[0031] Therefore, the grounding sub-rotating shaft provided in the present application rotates synchronously with the rotation angle of the isolation upper shaft, pushes and pulls the grounding interlocking baffle, and drives the grounding interlocking baffle to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft;

[0032] The auxiliary switch shaft rotates synchronously with the rotation angle of the auxiliary switch output shaft, pushing or pulling the auxiliary interlocking baffle, driving the auxiliary interlocking baffle to cover or release the operating end of the synchronous shaft at the lower shaft;

[0033] The grounding closing shaft rotates synchronously with the rotation angle of the lower isolation shaft, pushes and pulls the isolation interlock baffle, drives the isolation interlock baffle to cover or let go of the operating end of the synchronous shaft at the upper isolation shaft, and drives the isolation interlock baffle to enter or exit the rotation path of the closing coil shaft, entering the rotation path to form an effect of blocking the rotation of the closing coil shaft, thereby preventing its erroneous operation and rotation.

[0034] The interlocking structure formed by the above design effectively reduces erroneous operation.

[0035] At the same time, indicator marks showing the rotation status are set on the auxiliary switch shaft, grounding closing shaft, grounding opening shaft, closing coil shaft, and energy storage shaft respectively, which rotate synchronously with each shaft so that the staff can identify the status. The sealed chassis can also be made of transparent materials to meet the safety protection performance while allowing the staff to see the internal status of the chassis.

[0036] The utility model is further configured as follows: the grounding interlocking baffle includes a first sliding rod portion, a first lower shaft shielding portion provided at both ends of the first sliding rod portion, and a first driving portion; the first sliding rod portion is in a direction from the grounding sub-rotating shaft to the isolation lower shaft, and is reciprocatingly slidably matched with one set of sliding brackets provided on the panel; the first lower shaft shielding portion extends toward the synchronous rotating shaft connected to the isolation lower shaft for synchronous rotation, and covers its operating end; the first driving portion is provided with a first oblong sliding groove;

[0037] The grounding sub-rotating shaft is arranged at one of the mounting through holes on the panel for axially fixed circumferential rotation cooperation, including a first interlocking end and a first synchronous end. The first synchronous end is radially provided with an isolation cam push piece, and a first cam is coaxially sleeved on the isolation lower shaft. The first cam contacts the isolation cam push piece as the isolation lower shaft rotates at an angle, and drives the grounding sub-rotating shaft to rotate; the first interlocking end is located on the outer end face, and a grounding sub-interlocking crank arm is coaxially provided, and the grounding sub-interlocking crank arm is provided with a first interlocking pin inserted into the first elongated groove for sliding cooperation; the grounding sub-rotating shaft pushes and pulls the grounding interlocking baffle as the isolation lower shaft rotates at an angle, driving its first lower shaft shielding part to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft.

[0038] The utility model is further configured as follows: the auxiliary interlocking baffle includes a second sliding rod portion, a second lower shaft shielding portion provided at both ends of the second sliding rod portion, and a second driving portion. The second sliding rod portion is in a direction from the auxiliary switch shaft to the isolation lower shaft, and is reciprocatingly slidably matched with one of a group of sliding brackets provided on the panel. The second lower shaft shielding portion extends toward the synchronous rotating shaft connected to the isolation lower shaft for synchronous rotation, and covers its operating end. The second driving portion is provided with a second oblong sliding groove.

[0039] The auxiliary switch shaft is arranged at one of the mounting holes on the panel for axial fixation and circumferential rotation, and includes a second interlocking end and a second synchronization end. The output shaft of the auxiliary switch is connected to the second synchronization end for synchronous rotation and drives the auxiliary switch shaft to rotate;

[0040] The second interlocking end is located on the outer end face and is coaxially provided with an auxiliary switch interlocking crank arm, which is provided with a second interlocking pin inserted into the second elongated groove for sliding fit; the auxiliary switch interlocking crank arm pushes and pulls the auxiliary interlocking baffle as the auxiliary switch output shaft rotates, driving its second lower shaft shielding part to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft.

[0041] The utility model is further provided with: the isolation interlocking baffle comprises a third sliding rod portion, and a closing coil blocking portion and a third driving portion provided at both ends of the third sliding rod portion; the third sliding rod portion is provided with a third upper shaft shielding portion extending toward a synchronous rotating shaft connected to the isolation upper shaft for synchronous rotation and covering its operating end;

[0042] The third sliding rod part is engaged in reciprocating sliding with one of the sliding brackets provided on the panel along the direction from the closing coil rotating shaft to the grounding closing rotating shaft, and the third driving part is provided with a third elongated sliding groove;

[0043] The grounding coupling shaft is arranged at one of the mounting through holes on the panel for axial fixed circumferential rotation cooperation, and includes a third interlocking end and a third synchronization end. The third synchronization end is provided with a grounding cam pusher in the radial direction. The coaxial sleeve on the isolation upper shaft is provided with a third cam. The third cam contacts the grounding cam pusher as the isolation upper shaft rotates at an angle, and drives the grounding coupling shaft to rotate;

[0044] The third interlocking end portion is located on the outer end surface and is coaxially provided with a grounding interlocking crank arm, and the grounding interlocking crank arm is provided with a third interlocking pin inserted into the third elongated sliding groove for sliding fit;

[0045] The closing coil shaft is arranged at one of the mounting holes on the panel for axial fixation and circumferential rotation, and includes a fourth interlocking end and a fourth synchronization end. The closing coil manual paddle connecting shaft is synchronously rotated with the fourth synchronization end and drives the closing coil shaft to rotate. An interlocking limit piece is radially arranged between the closing coil shaft and the outer end surface;

[0046] The grounding shaft rotates with the angle of the isolation lower shaft, pushes or pulls the isolation interlocking baffle, drives its third upper shaft blocking part to cover or release the operating end of the isolation upper shaft, and drives its closing coil blocking part to enter or exit the rotation path of the interlocking limit piece.

[0047] The utility model is further configured as follows: the interlock mechanism further includes a lower door interlock mounting frame, an isolation lower door interlock plate, a lower door interlock member, and a return spring; the isolation lower door interlock plate includes a driven portion and a fourth slide portion; the lower door interlock member includes a fifth upper shaft blocking portion and a fifth slide portion; the

[0048] A synchronously rotating lower door interlocking cam is coaxially arranged on the operating end of the synchronous rotating shaft at the isolation upper shaft;

[0049] The lower door interlock mounting frame is arranged vertically above the upper isolation shaft and is located on the outer end face of the panel. The lower door interlock mounting frame is penetrated by a first slide groove and a second slide groove along the direction close to the operating end of the synchronous rotating shaft at the upper isolation shaft or away from it. The fourth slide rod part and the fifth slide rod part are respectively arranged in the first slide groove and the second slide groove for sliding cooperation. The fourth slide rod part and the fifth slide rod part are both provided with a return spring, and the return spring respectively drives the fifth upper shaft covering part to cover or let out the operating end of the synchronous rotating shaft at the upper isolation shaft, and drives the driven part to resist the lower door interlock cam.

[0050] The beneficial effects of this application are as follows: the transmission device and operating mechanism are sealed and protected by a sealed chassis, and a plurality of synchronous shafts, mounting holes, and sealed bearing assemblies corresponding to the operating shafts of the operating mechanism are provided on the panel. The synchronous shafts are connected to the operating shafts in a detachable synchronous rotation manner, so that the operator can drive the operating shafts in the sealed chassis to rotate by controlling the rotation of the synchronous shafts from the outer end face of the panel, thereby achieving the purpose of manual operation. Moreover, the arrangement of the sealed bearing assembly and the synchronous shafts pre-installed on the panel provides more reliable sealing performance than the design scheme of passing the operating shafts through the panel, can significantly improve the protection effect, and facilitates the disassembly and assembly of the panel.

[0051] The interlocking function is achieved through the linkage structural design of the grounding interlocking block, the isolation lower door interlocking block, the lower door interlocking component, the auxiliary interlocking block, and the isolation interlocking block, in conjunction with the structural design of each synchronous rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the prior art;

[0053] Figure 2 The structure of the embodiment of the present invention Figure 1 ;

[0054] Figure 3 The structure of the embodiment of the present invention Figure 2 ;

[0055] Figure 4 The structure of the embodiment of the present invention Figure 3 ;

[0056] Figure 5 for Figure 4 Cross-sectional view at AA in the middle;

[0057] Figure 6 The structure of the embodiment of the present invention Figure 4 ;

[0058] Figure 7 The structure of the embodiment of the present invention Figure 5 ;

[0059] Figure 8 The structure of the embodiment of the present invention Figure 6 ;

[0060] Figure 9 The structure of the embodiment of the present invention Figure 7 ;

[0061] Figure 10 for Figure 9 Cross-sectional view at EE.

[0062] The numbers in the accompanying drawings are: 1. Sealed chassis, 11-back plate, 111-third bolt hole, 112-through port, 12-panel, 121-outer end surface, 122-sealing ring groove, 123-first bolt hole, 131-shaft kit, 14-mounting through hole, 15-sealed bearing assembly, 2-operating mechanism, 21-circuit breaker spring energy storage operating mechanism, 211-permanent magnet DC reduction motor operating shaft, 212-energy storage indicator shaft, 213-opening coil shaft, 214-closing coil manual paddle connecting shaft, 215-closing coil shaft, 216 -Auxiliary switch, 217-Auxiliary switch shaft, 22-Isolating switch manual operating mechanism, 221-Isolating upper shaft, 222-Isolating lower shaft, 223-Grounding closing shaft, 224-Grounding split shaft, 3-Transmission device, 4-Interlocking mechanism, 41-Sliding bracket, 42-Grounding interlocking baffle, 43-Isolating lower door interlocking plate, 44-Lower door interlocking piece, 45-Auxiliary interlocking baffle, 46-Isolating interlocking baffle, 5-Solid insulation cylinder, 51-Isolating knife switch, 52-Isolating knife insulation pull rod, 53-Vacuum interrupter pull rod, 54-Vacuum interrupter.

[0063] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be understood as limitations on this patent. DETAILED DESCRIPTION

[0064] To make the technical solution and its advantages of the present application clearer, the technical solution of the present application will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present application and are only used to explain the present application, not to limit the present application. It should be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0065] The following is a detailed introduction to the utility model in conjunction with the accompanying drawings. In the drawings of the present application specification, the upper isolation shaft 221, the lower isolation shaft 222, the grounding closing shaft 223, the grounding branch shaft 224; the permanent magnet DC reduction motor operating shaft 211, the energy storage indication shaft 212, the opening coil shaft 213, the closing coil shaft 215, the auxiliary switch 216, the auxiliary switch shaft 217; the above-mentioned numbers are in the appendix of the specification Figure 2 、 8 The marking on the panel 12 is to facilitate understanding of the corresponding synchronous shaft position. In fact, the panel is the synchronous shaft that is axially fixed and circumferentially rotated with the above-mentioned shafts and can be detachably connected. Figure 7 In the figure, it is clearly visible after the panel 12 is hidden. When reading this specification and comparing it with the drawings in the specification, you should pay attention to distinguishing them.

[0066] like Figure 2-10 As shown, a sealing structure of a solid insulation switchgear includes a sealed chassis 1, an operating mechanism 2, a transmission device 3, an interlocking mechanism 4, and a plurality of high-voltage vacuum switch units arranged on the rear side of the sealed chassis 1. The high-voltage vacuum switch units include a solid insulation cylinder 5. The sealed chassis 1 includes a back plate 11 sealed and fixed to the solid insulation cylinder 5, and a panel 12 opposite to the back plate 11. The panel 12 is detachably sealed and connected to the sealed chassis 1, and includes an inner end surface facing the sealed chassis 1 and an outer end surface 121 facing away from the sealed chassis 1.

[0067] The sealed chassis 1 is provided with a transmission device 3 and an operating mechanism 2 that cooperate with the solid insulating cylinder 5. The panel 12 is provided with a plurality of synchronous rotating shafts 13, mounting through holes 14, and sealed bearing assemblies 15 at each operating axis of the operating mechanism 2. The mounting through holes 14 pass through the panel 12 and connect the inside and outside of the sealed chassis 1. The synchronous rotating shaft 13 passes through the mounting through holes 14 to perform axial fixed circumferential rotation cooperation, including a connecting end and an operating end. The connecting end is located on the inner end surface and is detachably connected to the operating shaft for synchronous rotation. The operating end is located on the outer end surface 121.

[0068] The sealed bearing assembly 15 is disposed between the synchronous rotating shaft 13 and the mounting through hole 14 . The interlocking mechanism 4 is disposed on the outer end surface 121 of the panel 12 and is linked with the synchronous rotating shaft 13 .

[0069] The present invention is further provided with: the mounting through hole 14 is a countersunk through hole, and a thickened flange connected to the mounting through hole 14 is provided on the inner end surface of the panel 12 corresponding to the countersunk through hole;

[0070] The sealed bearing assembly 15 includes a first sealing ring, a bearing, and a bearing locating ring. The bearing and the bearing locating ring are arranged at the countersunk through hole. A sealing groove is coaxially arranged on the synchronous rotating shaft 13. The first sealing ring is sleeved and connected to the sealing groove.

[0071] In order to reduce the thickness of the panel 12 and meet the thickness requirement for installing the sealed bearing assembly 15, a thickened flange is set at the installation through hole 14 to form a countersunk through hole structural design, which is only locally thickened at the installation location. While meeting the requirements, the thickness of the panel 12 is minimized.

[0072] On the inner end surface of the panel 12, a sealing ring groove 122 and a second sealing ring are provided along the edge contour. The sealing ring groove 122 conflicts with the end surface of the box opening of the sealed chassis 1 where the panel 12 is installed. Each mounting through-hole 14 is located in the sealing ring groove 122. The panel 12 is provided with a plurality of first bolt holes 123 on the radial outside of the sealing ring groove 122. The end surface of the box opening of the sealed chassis 1 is provided with a plurality of second bolt holes corresponding to the positions of the first bolt holes 123. The panel 12 is detachably fixed to the end surface of the box opening by bolts, and the second sealing ring is clamped.

[0073] The back plate 11 is provided with a plurality of third bolt holes 111 for detachably fixing to the solid insulating tube 5. The back plate 11 is provided with a through opening 112 for the insulating rod 52 of the isolation knife of the solid insulating tube 5 and the rod 53 of the vacuum interrupter chamber to pass through.

[0074] A mechanism mounting bracket is provided in the sealed chassis 1, which separates the inner cavity of the sealed chassis 1 into a transmission mounting side for mounting the transmission device 3 and an operation mounting side for mounting the operating mechanism 2. The operating mechanism 2 includes a circuit breaker spring energy storage operating mechanism 21 and an isolating switch manual operating mechanism 22. The circuit breaker spring energy storage operating mechanism 21 and the isolating switch manual operating mechanism 22 are modularly designed and both include a mounting base. A detachable fixed connection is made between the mounting base and the partition.

[0075] Through the design of the sealing ring groove 122 and the second sealing ring of the panel 12, when the panel 12 is closed and installed, the second sealing ring is in full contact and pressure with the end face where the box opening is located along the contour of the panel 12, forming a full circle seal on the original contour of the panel 12.

[0076] The back plate 11 is fixed to the end face of the solid insulating tube 5 where the tube mouth is located by screws, and the sealing is achieved by using the material of the end face where the tube mouth is located and the back face, or by similarly installing a third sealing ring along the contour. The isolation knife insulating pull rod 52 and the vacuum interrupter pull rod 53 are connected to the transmission device 3 through the through hole, and then linked to the operating mechanism 2.

[0077] The end surface of the connection end of the synchronous rotating shaft 13 is provided with a groove. The operating shafts of the operating mechanism 2 are respectively coaxially arranged with the synchronous rotating shafts 13, and corresponding to the grooves of the respective synchronous rotating shafts 13, there are protrusions coaxially spliced ​​with the respective synchronous rotating shafts 13. The synchronous rotating shaft 13 is assembled with the panel 12 and spliced ​​with the operating shafts to make synchronous rotation connection.

[0078] By means of concave-convex splicing, each operating shaft and each synchronous rotating shaft 13 can be detachably and quickly spliced ​​together. The concave and convex blocks can be set to a structure such as a straight line or a polygon that utilizes synchronous rotation transmission.

[0079] The synchronous rotating shaft 13 and the operating shaft have adjacent end faces with mirror-image projections or grooves, and an adapter sleeve is provided between the synchronous rotating shaft 13 and the operating shaft. The axial ends of the adapter sleeve are respectively assembled with the synchronous rotating shaft 13 and the operating shaft kit 131.

[0080] In the case that the operating shaft and the synchronous rotating shaft 13 cannot be directly spliced ​​together, an adapter sleeve can be provided for connecting transmission.

[0081] The operating mechanism 2 includes a circuit breaker spring energy storage operating mechanism 21 and an isolating switch manual operating mechanism 22;

[0082] The isolating switch manual operating mechanism 22 includes an isolation upper shaft 221, an isolation lower shaft 222, a grounding closing shaft 223, and a grounding separating shaft 224, which are linked with the isolation knife switch 51 of the solid insulation tube 5;

[0083] The circuit breaker spring energy storage operating mechanism 21 includes a permanent magnet DC reduction motor operating shaft 211 that cooperates with the isolation knife insulation pull rod 52, an energy storage indication shaft 212, an opening coil rotating shaft 213, a closing coil rotating shaft 215, a closing coil manual paddle connecting shaft 214, an auxiliary switch 216, and an auxiliary switch rotating shaft 217;

[0084] The interlocking mechanism 4 includes several sets of sliding brackets 41, a grounding interlocking block 42, an isolation lower door interlocking block 43, a lower door interlocking member 44, an auxiliary interlocking block 45, and an isolation interlocking block 46;

[0085] The grounding sub-rotating shaft 224 rotates synchronously with the rotation angle of the isolation upper shaft 221, pushing and pulling the grounding interlocking baffle 42, driving the grounding interlocking baffle 42 to cover or let go of the operating end of the synchronous rotating shaft 13 at the isolation lower shaft 222;

[0086] The auxiliary switch shaft 217 rotates synchronously with the rotation angle of the auxiliary switch 216 output shaft, pushing or pulling the auxiliary interlocking baffle 45, driving the auxiliary interlocking baffle 45 to cover or release the operating end of the synchronous shaft 13 at the lower shaft 222;

[0087] The grounding closing shaft 223 rotates synchronously with the rotation angle of the isolation lower shaft 222, pushing or pulling the isolation interlock baffle 46, driving the isolation interlock baffle 46 to cover or give way to the operating end of the synchronous shaft 13 at the isolation upper shaft 221, and driving the isolation interlock baffle to enter or exit the rotation path of the closing coil shaft 215.

[0088] When the position of the isolating knife switch 51 (or isolating switch) in the solid insulating tube 5 changes, the isolating knife pull rod connected to the isolating knife switch 51 forms two pushing and pulling movements. The transmission device 3 changes the direction of the push-pull force of the isolation rod through the design of the large shaft swing arm and the bevel gear set, and converts it into clockwise and counterclockwise rotation of the isolation main shaft. The isolation main shaft swing arm set on the isolation main shaft drives the rotation of the isolation upper shaft 221 and the isolation lower shaft 222 according to its two rotation angles in the forward and reverse directions. Similarly, the staff controls the opening and closing states of the isolation knife switch 51 in reverse by operating the synchronous rotating shaft 13 at the isolation upper shaft 221 and the isolation lower shaft 222.

[0089] The grounding closing shaft 223 and the grounding separating shaft 224 are linked with the interlocking cams on the cam-isolating upper shaft 221 and the isolating lower shaft 222 through the cam pusher. The grounding closing shaft 223 and the grounding separating shaft 224 serve as transmission parts and rotate according to the rotation angle of the isolating upper shaft 221 and the isolating lower shaft 222, thereby displaying the angular state of the isolating upper shaft 221 and the isolating lower shaft 222.

[0090] When the state of the vacuum interrupter 54 in the solid insulation tube 5 changes, the isolation knife insulation pull rod 52 (vacuum tube pull rod) will push and pull. The transmission device 3 changes the direction of the force through the small shaft swing arm, forward and reverse screws, joint bearings, and the crank arm of the circuit breaker operating mechanism 2.

[0091] This drives the two main shafts of the circuit breaker operating mechanism 2 to rotate clockwise and counterclockwise. The energy storage indicator shaft 212, the closing current shaft, and the auxiliary switch shaft 217 all rotate according to the state of the circuit breaker operating mechanism 2. Conversely, the operator controls the state of the circuit breaker operating mechanism 2 and the insulating material pull rod through reverse manual operation.

[0092] Therefore, the grounding sub-rotating shaft 224 provided in the present application rotates synchronously with the rotation angle of the isolation upper shaft 221, pushing and pulling the grounding interlocking baffle 42, driving the grounding interlocking baffle 42 to cover or let go of the operating end of the synchronous rotating shaft 13 at the isolation lower shaft 222;

[0093] The auxiliary switch shaft 217 rotates synchronously with the rotation angle of the auxiliary switch 216 output shaft, pushing or pulling the auxiliary interlocking baffle 45, driving the auxiliary interlocking baffle 45 to cover or release the operating end of the synchronous shaft 13 at the lower shaft 222;

[0094] The grounding closing shaft 223 rotates synchronously with the rotation angle of the isolation lower shaft 222, pushing and pulling the isolation interlocking baffle 46, driving the isolation interlocking baffle 46 to cover or let go of the operating end of the synchronous shaft 13 at the isolation upper shaft 221, and driving the isolation interlocking baffle to enter or exit the rotation path of the closing coil shaft 215, entering the rotation path to form an effect of blocking the rotation of the closing coil shaft 215, thereby preventing its erroneous rotation.

[0095] The interlocking structure formed by the above design effectively reduces erroneous operation.

[0096] At the same time, indicator marks showing the rotation status are respectively set on the auxiliary switch shaft 217, the grounding closing shaft 223, the grounding branch shaft 224, the closing coil shaft 215, and the energy storage shaft, which rotate synchronously with each shaft so that the staff can identify the status. The sealed chassis 1 can also be made of transparent materials to meet the safety protection performance while allowing the staff to see the internal status of the chassis.

[0097] The grounding interlocking baffle 42 includes a first sliding rod portion, a first lower shaft shielding portion provided at both ends of the first sliding rod portion, and a first driving portion. The first sliding rod portion reciprocates and slides with one of the sliding brackets 41 provided on the panel 12 in the direction from the grounding sub-rotating shaft 224 to the isolation lower shaft 222. The first lower shaft shielding portion extends toward the synchronous rotating shaft 13 connected to the isolation lower shaft 222 for synchronous rotation and covers its operating end. The first driving portion is provided with a first oblong sliding groove.

[0098] The grounding sub-rotating shaft 224 is arranged at one of the mounting through holes 14 on the panel 12 for axial fixed circumferential rotation cooperation, including a first interlocking end and a first synchronous end. The first synchronous end is radially provided with an isolation cam push piece, and a first cam is coaxially sleeved on the isolation lower shaft 222. The first cam contacts the isolation cam push piece as the isolation lower shaft 222 rotates at an angle, and drives the grounding sub-rotating shaft 224 to rotate; the first interlocking end is located on the outer end face 121, and is coaxially provided with a grounding sub-interlocking crank arm, which is provided with a first interlocking pin inserted into the first elongated groove for sliding cooperation; the grounding sub-rotating shaft pushes and pulls the grounding interlocking baffle 42 as the isolation lower shaft 222 rotates at an angle, driving its first lower shaft shielding portion to cover or let go of the operating end of the synchronous rotating shaft 13 at the isolation lower shaft 222.

[0099] The auxiliary interlocking baffle 45 includes a second slide portion, a second lower shaft shielding portion provided at both ends of the second slide portion, and a second driving portion. The second slide portion reciprocates and slides with one of the sliding brackets 41 provided on the panel 12 in the direction from the auxiliary switch shaft 217 to the isolation lower shaft 222. The second lower shaft shielding portion extends toward the synchronous shaft 13 connected to the isolation lower shaft 222 for synchronous rotation and covers its operating end. The second driving portion is provided with a second elongated groove.

[0100] The auxiliary switch shaft 217 is provided at one of the mounting holes 14 on the panel 12 for axial fixation and circumferential rotation. The auxiliary switch shaft 217 includes a second interlocking end and a second synchronization end. The output shaft of the auxiliary switch 216 is connected to the second synchronization end for synchronous rotation and drives the auxiliary switch shaft 217 to rotate.

[0101] The second interlocking end is located on the outer end face 121, and is coaxially provided with an auxiliary switch 216 interlocking arm, which is provided with a second interlocking pin inserted into the second elongated groove for sliding fit; the auxiliary switch 216 interlocking arm rotates with the output shaft of the auxiliary switch 216, pushes and pulls the auxiliary interlocking baffle 45, and drives its second lower shaft shielding part to cover or make way for the operating end of the synchronous rotating shaft 13 at the isolated lower shaft 222.

[0102] The isolation interlocking baffle 46 includes a third slide portion, a closing coil blocking portion provided at both ends of the third slide portion, and a third driving portion. The third slide portion is provided with a third upper shaft shielding portion extending toward the synchronous rotating shaft 13 connected to the isolation upper shaft 221 for synchronous rotation and covering its operating end.

[0103] The third sliding rod portion slides back and forth with one of the sliding brackets 41 provided on the panel 12 along the direction from the closing coil rotating shaft 215 to the grounding closing rotating shaft 223. The third driving portion is provided with a third elongated sliding groove.

[0104] The grounding coupling shaft 223 is arranged at one of the mounting through holes 14 on the panel 12 for axially fixed circumferential rotation cooperation, and includes a third interlocking end and a third synchronization end. The third synchronization end is radially provided with a grounding cam pusher. The isolation upper shaft 221 is coaxially sleeved with a third cam. The third cam contacts the grounding cam pusher as the isolation upper shaft 221 rotates, and drives the grounding coupling shaft 223 to rotate.

[0105] The third interlocking end portion is located on the outer end surface 121 and is coaxially provided with a grounding interlocking crank arm, and the grounding interlocking crank arm is provided with a third interlocking pin inserted into the third elongated groove for sliding fit;

[0106] The closing coil shaft 215 is arranged at one of the mounting holes 14 on the panel 12 for axial fixation and circumferential rotation. It includes a fourth interlocking end and a fourth synchronization end. The closing coil manual paddle connecting shaft is synchronously connected to the fourth synchronization end for rotation and drives the closing coil shaft 215 to rotate. Interlocking limit plates are radially provided between the closing coil shaft 215 and the outer end surface 121.

[0107] The grounding closing shaft rotates along with the isolation lower shaft 222, pushes and pulls the isolation interlocking baffle 46, drives its third upper shaft shielding part to cover or release the operating end of the isolation upper shaft 221, and drives its closing coil blocking part to enter or exit the rotation path of the interlocking limit piece.

[0108] The interlocking mechanism 4 also includes a lower door interlocking mounting frame 47, an isolation lower door interlocking piece 43, a lower door interlocking member 44, and a return spring 48. The isolation lower door interlocking piece 43 includes a driven portion and a fourth sliding rod portion. The lower door interlocking member 44 includes a fifth upper shaft blocking portion and a fifth sliding rod portion.

[0109] A synchronously rotating lower door interlocking cam is coaxially arranged on the operating end of the synchronous rotating shaft 13 at the isolated upper shaft 221;

[0110] The lower door interlock mounting frame 47 is arranged vertically above the isolation upper shaft 221 and is located on the outer end face 121 of the panel 12. The lower door interlock mounting frame 47 is penetrated by a first slide groove and a second slide groove along the direction close to the isolation upper shaft 221 or away from the operating end of the synchronous rotating shaft 13. The fourth slide rod part and the fifth slide rod part are respectively arranged in the first slide groove and the second slide groove for sliding cooperation. The fourth slide rod part and the fifth slide rod part are both provided with a return spring 48. The return spring 48 respectively drives the fifth upper shaft covering part to cover or let out the operating end of the synchronous rotating shaft 13 at the isolation upper shaft 221, and drives the driven part to resist the lower door interlock cam.

[0111] The beneficial effects of this application are as follows: the transmission device 3 and the operating mechanism 2 are sealed and protected by the sealed chassis 1, and a plurality of synchronous rotating shafts 13, mounting holes 14, and sealed bearing assemblies 15 corresponding to the various operating shafts of the operating mechanism 2 are provided on the panel 12. The synchronous rotating shafts 13 are connected to the various operating shafts in a detachable synchronous rotation manner, so that the staff can drive the operating shafts in the sealed chassis 1 to rotate by controlling the rotation of the synchronous rotating shafts 13 on the outer end face 121 of the panel 12, thereby achieving the purpose of manual operation. Moreover, with the setting of the sealed bearing assembly 15 and the synchronous rotating shafts 13 pre-installed on the panel 12, compared with the design scheme of passing the operating shaft through the panel 12, the sealing performance is more reliable, the protection effect can be significantly improved, and the panel 12 can be easily disassembled and assembled.

[0112] The interlocking function is achieved through the linkage structural design of the grounding interlocking block 42, the isolation lower door interlocking block 43, the lower door interlocking member 44, the auxiliary interlocking block 45, and the isolation interlocking block 46, in conjunction with the structural design of each synchronous rotating shaft 13.

[0113] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A sealed structure for a solid-insulated switchgear cabinet, comprising a sealed chassis, an operating mechanism, a transmission device, an interlocking mechanism, and a plurality of high-voltage vacuum switch units disposed on the rear side of the sealed chassis, wherein the high-voltage vacuum switch units include a solid-insulated cylinder, and characterized in that: The sealed chassis includes a back plate sealed and fixed to the solid insulating tube, and a panel opposite to the back plate, the panel being detachably sealed and connected to the sealed chassis, including an inner end surface facing the sealed chassis and an outer end surface facing away from the sealed chassis; The sealed chassis is provided with a transmission device and an operating mechanism that cooperate with the solid insulating cylinder. The panel is provided with a plurality of synchronous rotating shafts, mounting through holes, and sealed bearing assemblies at each operating shaft of the operating mechanism corresponding to the panel. The mounting through holes penetrate the panel and connect the inside and outside of the sealed chassis. The synchronous rotating shaft passes through the mounting through holes to perform axial fixed circumferential rotation cooperation, including a connecting end and an operating end. The connecting end is located on the inner end face and is detachably connected to the operating shaft for synchronous rotation. The operating end is located on the outer end face. The sealed bearing assembly is arranged between the synchronous rotating shaft and the mounting through hole, and the interlocking mechanism is arranged on the outer end surface of the panel and cooperates with the synchronous rotating shaft.

2. The sealing structure of a solid insulation switch cabinet according to claim 1, characterized in that: The mounting through hole is a countersunk through hole, and a thickened flange connected to the mounting through hole is provided on the inner end surface of the panel corresponding to the countersunk through hole; The sealed bearing assembly includes a first sealing ring, a bearing, and a bearing positioning ring, and the bearing and the bearing positioning ring are arranged at the countersunk through hole; a sealing groove is coaxially arranged on the synchronous rotating shaft, and the first sealing ring is sleeved and connected with the sealing groove.

3. The sealing structure of a solid insulation switch cabinet according to claim 2, characterized in that: A sealing ring groove and a second sealing ring are provided on the inner end surface of the panel along the edge contour. The sealing ring groove conflicts with the end surface of the box opening of the sealed chassis mounting panel. Each mounting through-hole is located in the sealing ring groove. The panel is provided with a plurality of first bolt holes on the radially outer side of the sealing ring groove. The end surface of the sealed chassis box opening is provided with a plurality of second bolt holes corresponding to the positions of the first bolt holes. The panel is detachably fixed to the end surface of the box opening by bolts, and the second sealing ring is clamped. The back plate is provided with a plurality of third bolt holes for detachably fixing with the solid insulating tube, and the back plate is provided with openings for the insulating rods of the solid insulating tube isolation knife and the vacuum interrupter rod to pass through; A mechanism mounting bracket is provided in the sealed chassis, which divides the inner cavity of the sealed chassis into a transmission mounting side for mounting the transmission device and an operation mounting side for mounting the operating mechanism. The operating mechanism includes a circuit breaker spring energy storage operating mechanism and an isolating switch manual operating mechanism. The circuit breaker spring energy storage operating mechanism and the isolating switch manual operating mechanism are modularly designed and both include a mounting base. A detachable fixed connection is made between the mounting base and the partition.

4. The sealing structure of a solid insulation switch cabinet according to claim 3, characterized in that: The end face of the connection end of the synchronous rotating shaft is provided with a groove, and a sealing ring is installed in the groove. The operating shafts of the operating mechanism are respectively coaxially arranged with the synchronous rotating shafts, and corresponding to the grooves of their respective synchronous rotating shafts, there are protrusions coaxially spliced ​​with their respective synchronous rotating shafts. The synchronous rotating shaft is assembled with the panel and spliced ​​with the operating shafts to make synchronous rotation connection.

5. The sealing structure of a solid insulation switch cabinet according to claim 3, characterized in that: The adjacent end faces of the synchronous rotating shaft and the operating shaft are mirror-imaged with protrusions or grooves, and an adapter sleeve is provided between the synchronous rotating shaft and the operating shaft. The axial ends of the adapter sleeve are respectively spliced ​​with the synchronous rotating shaft and the operating shaft kit.

6. The sealing structure of a solid insulation switch cabinet according to any one of claims 1 to 5, characterized in that: The operating mechanism includes a circuit breaker spring energy storage operating mechanism and an isolating switch manual operating mechanism; The manual operating mechanism of the isolating switch includes an isolation upper shaft, an isolation lower shaft, a grounding closing shaft, and a grounding separating shaft, which are linked with the isolation knife switch of the solid insulation cylinder; The circuit breaker spring energy storage operating mechanism includes an energy storage indication shaft that cooperates with the insulating pull rod of the isolating knife, a closing coil rotating shaft, a closing coil manual paddle connecting shaft, an auxiliary switch, and an auxiliary switch rotating shaft; The interlocking mechanism includes several groups of sliding brackets, a grounding interlocking block, an isolation lower door interlocking block, a lower door interlocking member, an auxiliary interlocking block, and an isolation interlocking block; The grounding sub-rotating shaft rotates synchronously with the rotation angle, pushing and pulling the grounding interlocking baffle, driving the grounding interlocking baffle to cover or let go of the operating end of the synchronous rotating shaft at the lower shaft; The auxiliary switch shaft rotates synchronously with the rotation angle of the auxiliary switch output shaft, pushing or pulling the auxiliary interlocking baffle, driving the auxiliary interlocking baffle to cover or release the operating end of the synchronous shaft at the lower shaft; The grounding closing shaft rotates synchronously with the rotation angle of the lower isolation shaft, pushes and pulls the isolation interlock baffle, drives the isolation interlock baffle to cover or let go of the operating end of the synchronous shaft at the upper isolation shaft, and drives the isolation interlock baffle to enter or exit the rotation path of the closing coil shaft.

7. The sealing structure of a solid insulation switch cabinet according to claim 6, characterized in that: The grounding interlocking baffle includes a first sliding rod portion, a first lower shaft shielding portion provided at both ends of the first sliding rod portion, and a first driving portion. The first sliding rod portion is adapted to reciprocate and slide with one of the sliding brackets provided on the panel along the direction from the grounding sub-rotating shaft to the isolation lower shaft. The first lower shaft shielding portion extends toward the synchronous rotating shaft connected to the isolation lower shaft for synchronous rotation and covers its operating end. The first driving portion is provided with a first oblong sliding groove. The grounding sub-rotating shaft is arranged at one of the mounting through holes on the panel for axially fixed circumferential rotation cooperation, including a first interlocking end and a first synchronous end. The first synchronous end is radially provided with an isolation cam push piece, and a first cam is coaxially sleeved on the isolation lower shaft. The first cam contacts the isolation cam push piece as the isolation lower shaft rotates at an angle, and drives the grounding sub-rotating shaft to rotate; the first interlocking end is located on the outer end face, and a grounding sub-interlocking crank arm is coaxially provided, and the grounding sub-interlocking crank arm is provided with a first interlocking pin inserted into the first elongated groove for sliding cooperation; the grounding sub-rotating shaft pushes and pulls the grounding interlocking baffle as the isolation lower shaft rotates at an angle, driving its first lower shaft shielding part to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft.

8. The sealing structure of a solid insulation switch cabinet according to claim 6, characterized in that: The auxiliary interlocking baffle includes a second sliding rod portion, a second lower shaft shielding portion provided at both ends of the second sliding rod portion, and a second driving portion. The second sliding rod portion is in a direction from the auxiliary switch shaft to the isolation lower shaft, and is reciprocatingly slidably matched with one of a group of sliding brackets provided on the panel. The second lower shaft shielding portion extends toward the synchronous rotating shaft connected to the isolation lower shaft for synchronous rotation, and covers its operating end. The second driving portion is provided with a second elongated groove. The auxiliary switch shaft is arranged at one of the mounting holes on the panel for axial fixation and circumferential rotation, and includes a second interlocking end and a second synchronization end. The output shaft of the auxiliary switch is connected to the second synchronization end for synchronous rotation and drives the auxiliary switch shaft to rotate; The second interlocking end is located on the outer end face and is coaxially provided with an auxiliary switch interlocking crank arm, which is provided with a second interlocking pin inserted into the second elongated groove for sliding fit; the auxiliary switch interlocking crank arm pushes and pulls the auxiliary interlocking baffle as the auxiliary switch output shaft rotates, driving its second lower shaft shielding part to cover or let go of the operating end of the synchronous rotating shaft at the isolation lower shaft.

9. The sealing structure of a solid insulation switch cabinet according to claim 6, characterized in that: The isolation interlocking baffle includes a third sliding rod portion, a closing coil blocking portion provided at both ends of the third sliding rod portion, and a third driving portion. The third sliding rod portion is provided with a third upper shaft shielding portion extending toward a synchronous rotating shaft connected to the isolation upper shaft for synchronous rotation and covering its operating end. The third sliding rod part is engaged in reciprocating sliding with one of the sliding brackets provided on the panel along the direction from the closing coil rotating shaft to the grounding closing rotating shaft, and the third driving part is provided with a third elongated sliding groove; The grounding coupling shaft is arranged at one of the mounting through holes on the panel for axial fixed circumferential rotation cooperation, and includes a third interlocking end and a third synchronization end. The third synchronization end is provided with a grounding cam pusher in the radial direction. The coaxial sleeve on the isolation upper shaft is provided with a third cam. The third cam contacts the grounding cam pusher as the isolation upper shaft rotates at an angle, and drives the grounding coupling shaft to rotate; The third interlocking end portion is located on the outer end surface and is coaxially provided with a grounding interlocking crank arm, and the grounding interlocking crank arm is provided with a third interlocking pin inserted into the third elongated sliding groove for sliding fit; The closing coil shaft is arranged at one of the mounting holes on the panel for axial fixation and circumferential rotation, and includes a fourth interlocking end and a fourth synchronization end. The closing coil manual paddle connecting shaft is synchronously rotated with the fourth synchronization end and drives the closing coil shaft to rotate. An interlocking limit piece is radially arranged between the closing coil shaft and the outer end surface; The grounding shaft rotates with the angle of the isolation lower shaft, pushes or pulls the isolation interlocking baffle, drives its third upper shaft blocking part to cover or release the operating end of the isolation upper shaft, and drives its closing coil blocking part to enter or exit the rotation path of the interlocking limit piece.

10. The sealing structure of a solid insulation switch cabinet according to claim 6, characterized in that: The interlock mechanism further includes a lower door interlock mounting frame, an isolation lower door interlock plate, a lower door interlock member, and a return spring. The isolation lower door interlock plate includes a driven portion and a fourth slide portion. The lower door interlock member includes a fifth upper shaft blocking portion and a fifth slide portion. A synchronously rotating lower door interlock cam is coaxially provided on the operating end of the synchronous rotating shaft at the isolation upper shaft. The lower door interlock mounting frame is arranged vertically above the upper isolation shaft and is located on the outer end face of the panel. The lower door interlock mounting frame is penetrated by a first slide groove and a second slide groove along the direction close to the operating end of the synchronous rotating shaft at the upper isolation shaft or away from it. The fourth slide rod part and the fifth slide rod part are respectively arranged in the first slide groove and the second slide groove for sliding cooperation. The fourth slide rod part and the fifth slide rod part are both provided with a return spring, and the return spring respectively drives the fifth upper shaft covering part to cover or let out the operating end of the synchronous rotating shaft at the upper isolation shaft, and drives the driven part to resist the lower door interlock cam.

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