Isolation switch device and switch cabinet

Abstract

The utility model belongs to the technical field of medium-voltage power distribution systems, and discloses an isolating switch device and a switch cabinet, the isolating switch device comprises an insulating rod, a conductive block, a conductive sheet and an operating mechanism, the conductive block is sleeved on the insulating rod, the conductive sheet is fixedly connected with the conductive block, and the operating mechanism drives the conductive sheet and the conductive block to rotate through the insulating rod. Therefore, the conducting strip is selectively connected or disconnected with the circuit breaker connector bar, and the conducting block is electrically connected with the voltage transformer in the rotating process. An isolating switch device is additionally arranged between a circuit breaker and a voltage transformer in a switch cabinet, an operating mechanism is utilized to drive a conducting strip and a conducting block to rotate through an insulating rod, the conducting block and the voltage transformer keep electrical connection in the rotating process, the position of the conducting strip is changed in the rotating process, and then the conducting strip is selectively connected with or disconnected from a circuit breaker connector bar. The structure is simplified, the number of elements is reduced, flexible operation can be achieved, and the stability and reliability of the disconnecting switch device can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medium voltage distribution system technical field especially, relates to a kind of disconnecting switch device and switch cabinet. BACKGROUND

[0002] In order to monitor control voltage in real time, voltage transformer is usually prepared in the line side in switch cabinet, and voltage transformer can convert high voltage into low voltage, so as to protect power system.

[0003] In order to realize non-power outage maintenance or replace voltage transformer in the case of line electrification, voltage transformer needs to be set in line side, and disconnecting switch is installed in the front end of voltage transformer, which can isolate voltage and facilitate the introduction of residual voltage into ground to realize grounding protection. The traditional disconnecting switch device has the disadvantages of complex structure, many components, inflexible operation and unreliable structure.

[0004] Therefore, it is urgent to provide a disconnecting switch device and switch cabinet, which simplifies structure and reduces the number of components, can be flexibly operated, and can ensure the stability and reliability of structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a disconnecting switch device and switch cabinet, which simplifies structure and reduces the number of components, can be flexibly operated, and can ensure the stability and reliability of structure.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a disconnecting switch device for isolation protection between circuit breaker and voltage transformer in switch cabinet,

[0008] It comprises insulating rod, conductive block and conductive sheet, wherein the conductive block is sleeved on the insulating rod, and the conductive sheet is fixedly connected with the conductive block.

[0009] It further comprises operating mechanism, the operating mechanism drives the conductive sheet and the conductive block to rotate by the insulating rod, so that the conductive sheet is selectively connected or disconnected with circuit breaker wiring row, and the conductive block is electrically connected with the voltage transformer during rotation.

[0010] As an optional technical solution of disconnecting switch device, the circumferential surface of the conductive block is concave with sliding limiting groove, and the sliding limiting groove is used for fitting and limiting voltage transformer wiring row.

[0011] As an optional technical scheme of the isolating switch device, the conductive block is provided with a positioning surface, one end of the conductive sheet is used for lapping on the circuit breaker wiring row, and the other end of the conductive sheet is attached to the positioning surface and can be detachably fixed on the positioning surface.

[0012] As an optional technical scheme of the isolating switch device, the operating mechanism comprises:

[0013] The main box is arranged on the cabinet body of the switch cabinet, and the insulating rod is rotationally connected to the main box.

[0014] The operating pull rod and the swing piece are connected, one end of the swing piece is connected to the insulating rod, the other end of the swing piece is hingedly connected to the operating pull rod, and the operating pull rod drives the insulating rod to rotate by pulling the swing piece.

[0015] As an optional technical scheme of the isolating switch device, the operating mechanism further comprises a dynamic seal, the dynamic seal is arranged on the main box, the insulating rod is rotationally connected to the main box through the dynamic seal, and the swing piece is connected to the insulating rod through the dynamic seal.

[0016] As an optional technical scheme of the isolating switch device, the operating mechanism further comprises a guide rod, the first end of the guide rod is hingedly connected to the swing piece, the second end of the guide rod is slidingly connected to the main box, and the operating pull rod drives the guide rod to move through the swing piece.

[0017] As an optional technical scheme of the isolating switch device, the operating mechanism further comprises an elastic piece, the elastic piece is sleeved on the guide rod, and both ends of the elastic piece are respectively abutted against the first end of the guide rod and the inner wall of the main box.

[0018] As an optional technical scheme of the isolating switch device, a shaft sleeve is further included, the shaft sleeve is sleeved on the end portion of the insulating rod, the shaft sleeve is used for being fixed on the cabinet body of the switch cabinet, and the insulating rod is rotationally connected to the shaft sleeve.

[0019] The utility model provides a switch cabinet, which comprises the isolating switch device.

[0020] As an optional technical scheme of the switch cabinet, the cabinet body of the switch cabinet is provided with a grounding element, and the conductive sheet can be connected with the grounding element and disconnected with the circuit breaker wiring row.

[0021] Beneficial effects:

[0022] The utility model provides a disconnecting switch device for the isolation protection between circuit breaker and voltage transformer in switch cabinet, this disconnecting switch device includes insulating rod, conducting block, conducting sheet and operating mechanism, conducting block is set on insulating rod, conducting sheet is fixedly connected with conducting block, operating mechanism drives conducting sheet and conducting block to rotate through insulating rod, so that conducting sheet selectively connects or disconnects with circuit breaker wiring row, and conducting block keeps electrical connection with voltage transformer in the rotating process. Through adding disconnecting switch device between circuit breaker and voltage transformer in switch cabinet, operating mechanism drives conducting sheet and conducting block to rotate through insulating rod, conducting block keeps electrical connection with voltage transformer in the rotating process, the position of conducting sheet changes and then selectively connects or disconnects with circuit breaker wiring row in rotation, simplify the structure and reduce the component quantity, can flexible operation, can guarantee the stability and reliability of disconnecting switch device.

[0023] The utility model provides a switch cabinet, the switch cabinet includes disconnecting switch device, through setting the switch cabinet with disconnecting switch device, can realize not power failure overhauls or replacement voltage transformer under the condition of line electrification. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of disconnecting switch device provided by the utility model embodiment;

[0025] Figure 2 It is the split drawing of disconnecting switch device provided by the utility model embodiment;

[0026] Figure 3 It is the partial structure schematic diagram of the first visual angle of switch cabinet provided by the utility model embodiment;

[0027] Figure 4 It is the partial structure schematic diagram of the second visual angle of switch cabinet provided by the utility model embodiment;

[0028] Figure 5 It is the partial sectional view of switch cabinet provided by the utility model embodiment;

[0029] Figure 6 It is Figure 5 The local enlarged view of D in it;

[0030] Figure 7 It is the structure schematic diagram of conducting block provided by the utility model embodiment;

[0031] Figure 8 It is the partial structure schematic diagram of the third visual angle of switch cabinet provided by the utility model embodiment;

[0032] Figure 9 It is Figure 8 The local enlarged view of E in it;

[0033] Figure 10 is a structure schematic view of the isolating switch device (closed state) provided by the embodiment of the present application;

[0034] Figure 11 is a structure schematic view of the isolating switch device (dead point position) provided by the embodiment of the present application;

[0035] Figure 12 is a structure schematic view of the isolating switch device (open state) provided by the embodiment of the present application.

[0036] In the figure:

[0037] 1, voltage transformer; 2, circuit breaker; 3, three-position switch; 4, outgoing line bushing; 5, voltage transformer wiring panel; 6, circuit breaker wiring panel; 7, first wiring panel; 8, second wiring panel; 9, grounding element;

[0038] 100, isolating switch device; 10, main box body; 11, through hole; 12, sliding hole;

[0039] 21, insulating rod; 22, conductive block; 221, sliding limiting groove; 222, positioning surface; 23, conductive sheet; 24, shaft sleeve;

[0040] 31, operation pull rod; 32, guide rod; 33, elastic member; 34, swing member; 35, fastener;

[0041] 40, dynamic seal;

[0042] A, upper gas box bus chamber; B, lower gas box line side chamber; C, lower gas chamber left side plate. DETAILED DESCRIPTION

[0043] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0044] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or only indicates that first feature horizontal height is higher than second feature. First feature is in second feature "under", "below" and "under surface" includes that first feature is in second feature directly below and obliquely below, or only indicates that first feature horizontal height is less than second feature.

[0046] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0047] As Figures 1 to 5 Indicated, the embodiment provides a kind of isolating switch device and switch cabinet, the switch cabinet includes isolating switch device 100;The isolating switch device 100 is used for the isolation protection between circuit breaker 2 and voltage transformer 1 in switch cabinet, the isolating switch device 100 includes insulating rod 21, conducting block 22, conducting sheet 23 and operating mechanism, conducting block 22 is sleeved on insulating rod 21, conducting sheet 23 is fixedly connected with conducting block 22, operating mechanism is rotated by insulating rod 21 conducting sheet 23 and conducting block 22, so that conducting sheet 23 selectively with circuit breaker wiring 6 is connected or disconnected, while conducting block 22 and voltage transformer 1 are kept electrically connected in the rotating process.

[0048] By adding isolating switch device 100 between circuit breaker 2 and voltage transformer 1 in switch cabinet, rotating conducting sheet 23 and conducting block 22 by operating mechanism is driven by insulating rod 21, conducting block 22 and voltage transformer 1 are kept electrically connected in the rotating process, the position of conducting sheet 23 changes and then selectively with circuit breaker wiring 6 is connected or disconnected when rotating;By setting the switch cabinet with isolating switch device 100, under the condition of line electrification, non-power maintenance or voltage transformer 1 replacement can be realized;Simplify structure and reduce the number of components, can be flexible operation, also can guarantee the stability and reliability of isolating switch device 100.

[0049] Specifically, refer to Figures 2 to 4The cabinet body of the switch cabinet comprises two air chambers, i.e., an upper air tank bus chamber A and a lower air tank line side chamber B, and the upper air tank bus chamber A is located above the lower air tank line side chamber B. The lower air tank line side chamber B is provided with a three-position switch 3, a circuit breaker 2, a voltage transformer 1 and a disconnecting switch device 100, and the circuit breaker 2 and the voltage transformer 1 are arranged on the line side of the switch cabinet.

[0050] Further, the operating mechanism of the disconnecting switch device 100 comprises a main box body 10, an operating pull rod 31 and a swing piece 34, the main box body 10 is arranged on the cabinet body of the switch cabinet, and the insulating rod 21 is rotationally connected to the main box body 10. One end of the swing piece 34 is connected to the insulating rod 21, and the other end of the swing piece 34 is hingedly connected to the operating pull rod 31. The operating pull rod 31 drives the insulating rod 21 to rotate by pulling the swing piece 34. By arranging the operating pull rod 31 and the swing piece 34, when the operating pull rod 31 is pulled, the swing piece 34 swings by a certain angle and drives the insulating rod 21 to rotate, the number of components is small, and the operation is flexible.

[0051] In the embodiment, the cabinet body of the switch cabinet comprises a lower air chamber left side plate C and a lower air chamber right side plate arranged opposite to the lower air chamber left side plate C. The main box body 10 is fixed on the lower air chamber left side plate C. One end of the insulating rod 21 is rotationally arranged on the main box body 10, and the other end of the insulating rod 21 is connected to the lower air chamber right side plate.

[0052] Optionally, the operating mechanism further comprises a dynamic seal 40. The dynamic seal 40 is arranged on the main box body 10. The insulating rod 21 is rotationally connected to the main box body 10 through the dynamic seal 40. The swing piece 34 is connected to the insulating rod 21 through the dynamic seal 40. By arranging the dynamic seal 40 between the main box body 10 and the insulating rod 21, the insulating rod 21 does not directly contact the main box body 10, which can reduce the abrasion of the main box body 10 and the insulating rod 21 caused by friction and achieve a better sealing effect.

[0053] In the embodiment, the main box body 10 is provided with a mounting through hole, and the dynamic seal 40 is arranged at the mounting through hole. The dynamic seal 40 comprises a sealing sleeve ring and a rotating shaft. The rotating shaft is arranged in the sealing sleeve ring and rotationally connected to the sealing sleeve ring. The insulating rod 21 is connected to the rotating shaft.

[0054] Optionally, the disconnecting switch device 100 further comprises a shaft sleeve 24. The shaft sleeve 24 is sleeved on the end of the insulating rod 21. The shaft sleeve 24 is arranged on the lower air chamber right side plate and rotationally connected to the insulating rod 21. By arranging the shaft sleeve 24 on the cabinet body of the switch cabinet, the shaft sleeve 24 can provide support and protection for the insulating rod 21, thereby ensuring the stability and reliability of the insulating rod 21 during rotation.

[0055] In the embodiment, the insulating rod 21 has a square head end and a round head end, the round head end is rotationally connected with the shaft sleeve 24, the rotating shaft of the dynamic seal 40 is provided with a square inner hole, and the square head end of the insulating rod 21 is inserted into the square inner hole of the dynamic seal 40. By providing the square head end and the square inner hole on the rotating shaft of the dynamic seal 40, the operating pull rod 31 can drive the insulating rod 21 to rotate through the dynamic seal 40; by providing the round head end, the shaft sleeve 24 can provide support for the insulating rod 21 through the rotational cooperation of the round head end and the shaft sleeve 24.

[0056] In the embodiment, the conductive block 22 is sleeved on the square head end of the insulating rod 21; when the insulating rod 21 rotates, the conductive block 22 rotates with it, and the conductive block 22 drives the conductive sheet 23 to rotate around the insulating rod 21.

[0057] Optionally, the conductive block 22 is provided with a positioning surface 222, one end of the conductive sheet 23 is used for lapping on the circuit breaker wiring row 6, and the other end of the conductive sheet 23 is attached to the positioning surface 222 and can be detachably fixed on the positioning surface 222. By providing the spring steel sheet, the conductive sheet has good conductivity and elasticity, which helps to ensure the reliability and stability of the disconnecting switch device 100; by providing the positioning surface 222 on the conductive block 22, the relative position of the conductive sheet 23 and the conductive block 22 is determined, and the stability of the connection is ensured. The conductive sheet 23 is a spring steel sheet; the conductive sheet 23 is fixed on the conductive block 22 by bolts.

[0058] Referring to Figures 5 to 7 , the circumferential surface of the conductive block 22 is provided with a sliding limiting groove 221, which is used for attaching and limiting the voltage transformer wiring row 5. By providing the sliding limiting groove 221 on the circumferential surface of the conductive block 22, one end of the voltage transformer wiring row 5 is connected with the voltage transformer 1, and the other end is at least partially located in the sliding limiting groove 221 and attached to the groove bottom of the sliding limiting groove 221. When the conductive block 22 rotates, the conductive block 22 can also keep connected with the voltage transformer 1 through the voltage transformer wiring row 5.

[0059] In the embodiment, the switch cabinet further includes a first wiring row 7 and a second wiring row 8, the circuit breaker 2 is connected with the conductive sheet 23 through the circuit breaker wiring row 6, and the circuit breaker 2 and the three-position switch 3 are connected through the first wiring row 7; the cabinet body of the switch cabinet is provided with an outgoing line sleeve 4, and the circuit breaker 2 and the outgoing line sleeve 4 are connected through the second wiring row 8.

[0060] To adapt to the three-phase circuit design, in the embodiment, three voltage transformers 1 are provided, and the voltage transformer wiring row 5, the circuit breaker wiring row 6, the first wiring row 7 and the second wiring row 8 are also provided with three wires; the disconnecting switch device 100 includes three conductive sheets 23 and three conductive blocks 22.

[0061] The isolating switch device 100 has a closed state and an open state, the conductive block 22 is kept in contact with the voltage transformer 1 through the voltage transformer wiring 5, and pulling the operating pull rod 31 can drive the insulating rod 21 to rotate to switch the isolating switch device 100 between the closed state and the open state; see Figure 6 When the conductive sheet 23 is in the I position, the isolating switch device 100 is in the closed state, that is, the conductive sheet 23 is in contact with the circuit breaker wiring 6 and is connected with the circuit breaker 2 through the circuit breaker wiring 6; when the conductive sheet 23 is separated from the circuit breaker wiring 6, the isolating switch device 100 is in the open state.

[0062] Referring to Figure 8 and Figure 9 Optionally, the switch cabinet further comprises a grounding element 9, the grounding element 9 is arranged on the cabinet body of the switch cabinet, and the conductive sheet 23 can be connected with the grounding element 9 and disconnected with the circuit breaker wiring 6. By arranging the grounding element 9 on the switch cabinet, the grounding function can be quickly realized without adjusting the overall structure, and the structure is simple and convenient to design. In the embodiment, the grounding element 9 is detachably fixed on the cabinet body of the switch cabinet through bolts; when the conductive sheet 23 is in the II position, that is, the conductive sheet 23 is separated from the circuit breaker wiring 6, and the conductive sheet 23 can be connected with the grounding element 9, the grounding function is realized.

[0063] Referring to Figure 2 and Figures 10 to 12 The operating mechanism further comprises a guide rod 32, a first end of the guide rod 32 is hinged to the swing piece 34, and a second end of the guide rod 32 is slidingly connected with the main box body 10, and the operating pull rod 31 drives the guide rod 32 to move through the swing piece 34. By arranging the guide rod 32 in sliding connection with the main box body 10, the guide rod 32 can be effectively guided to move through the swing piece 34, and the rotation range of the insulating rod 21 is limited.

[0064] Further, the operating mechanism further comprises an elastic member 33, the elastic member 33 is sleeved on the guide rod 32, and two ends of the elastic member 33 abut against the first end of the guide rod 32 and the inner wall of the main box body 10. By sleeving the elastic member 33 on the guide rod 32, the elastic member 33 is squeezed when the guide rod 32 moves, which helps to drive the insulating rod 21 to quickly rotate by using the elastic force of the elastic member 33, and then the quick closing and opening is realized.

[0065] In the embodiment, the main box body 10 is provided with a through hole 11, one end of the operating pull rod 31 is connected to the dynamic seal 40, and the other end is movably arranged in the through hole 11; the guide rod 32 is provided with two, and one elastic element 33 is sleeved on each guide rod 32; the elastic element 33 can be a spring; the main box body 10 has two box side plates arranged oppositely, and each box side plate is provided with a through hole 11. Among them, the main box body 10 can be an integral structure or a split structure. Alternatively, two through holes 11 are arranged side by side and spaced apart in the vertical direction on each box side plate. By arranging two through holes 11 on each box side plate, the guide rod 32 can be movably arranged in the through hole 11 at a suitable position according to the actual installation condition.

[0066] Specifically, the swing piece 34 can be a dial piece; the swing piece 34 has a main circular plate and an extension plate connected to the main circular plate, and the extension plate extends radially along the main circular plate; the main circular plate is provided with a square hole, and the rotating shaft of the dynamic seal 40 is inserted into the square hole of the main circular plate. When the operating pull rod 31 moves, the swing piece 34 swings, thereby driving the rotating shaft of the dynamic seal 40 to rotate.

[0067] In the embodiment, the extension plate is provided with three, and the three extension plates are axially spaced apart around the main circular plate; two extension plates are arranged oppositely on the left and right sides of the main circular plate for respectively connecting the two guide rods 32, and the other extension plate is arranged at the bottom of the main circular plate and connected to the operating pull rod 31.

[0068] In the embodiment, the isolating switch device 100 further comprises a fastener 35, and the guide rod 32 and the operating pull rod 31 are hinged to the swing piece 34 through the fastener 35; the fastener 35 can be a pin.

[0069] Referring to Figure 10 When the operating pull rod 31 is pushed to the innermost position of the main box body 10, the isolating switch device 100 is in the closed state, at this time, the conductive sheet 23 is connected with the circuit breaker wiring row 6 of the circuit breaker 2; referring to Figure 11 When the operating pull rod 31 is pushed to the middle position of the main box body 10 (at this time, the two elastic elements 33 are located on the same straight line and the elastic forces are offset), the isolating switch device 100 is in the dead point position; referring to Figure 12 When the operating pull rod 31 is pulled outward to the outer position of the main box body 10, the isolating switch device 100 is in the open state, at this time, the conductive sheet 23 is separated from the circuit breaker wiring row 6, and the conductive sheet 23 can be connected with the grounding element 9. It can be understood that each time the operating pull rod 31 is pushed and pulled to open and close, the operating pull rod 31 will pass through the dead point position, at this time, it only needs to continue to push and pull the operating pull rod 31 to get out of the dead point position.

[0070] The following is the specific installation process of the isolating switch device 100:

[0071] First, the shaft sleeve 24 is welded on the preset fixed point of the lower air chamber right side plate, and the main box 10 is welded on the preset fixed point of the lower air chamber left side plate C; the conductive sheet 23 and the conductive block 22 are fixed by bolts one by one, among which two M4x10 bolts can be used to fix one conductive sheet 23 and one conductive block 22; after being fixed, the three conductive blocks 22 are sleeved on the insulating rod 21, and the three conductive blocks 22 are arranged on the three preset mark points of the insulating rod 21 respectively, and the same interval distance is maintained between the adjacent two conductive blocks 22; at the position of the preset mark point, the conductive block 22 is locked on the insulating rod 21 by M4x10 bolts, and the three conductive blocks 22 correspond to three phases respectively.

[0072] Next, the round head end of the insulating rod 21 is inserted into the shaft sleeve 24, the square head end of the insulating rod 21 is inserted into the square inner hole of the dynamic seal 40, the dynamic seal 40 is installed in the main box 10 and locked on the lower air chamber left side plate C, at this time all the conductive sheets 23 and the conductive blocks 22 are located between the lower air chamber left side plate C and the lower air chamber right side plate.

[0073] Then, the swing piece 34 is connected to the rotating shaft of the dynamic seal 40, so that the swing piece 34 can drive the insulating rod 21 to rotate through the rotating shaft of the dynamic seal 40; the first ends of the two guide rods 32 are connected to the two sides of the swing piece 34 through fasteners 35 respectively, and the elastic pieces 33 are sleeved on the guide rods 32; the second ends of the two guide rods 32 are inserted into the two sliding holes 12 of the main box 10 respectively.

[0074] Finally, one end of the operating pull rod 31 is put into the main box 10 from the through hole 11, and the end of the operating pull rod 31 is connected to the bottom end of the swing piece 34 through the fastener 35.

[0075] After the disconnecting switch device 100 is positioned between the voltage transformer wiring row 5 and the circuit breaker wiring row 6 and is fixed, the disconnecting switch device 100 is operated to the closed position (i.e. the conductive sheet 23 is connected to the circuit breaker 2 through the circuit breaker wiring row 6), the voltage transformer wiring row 5 is locked in the sliding limiting groove 221 of the conductive block 22, and the width surface of the voltage transformer wiring row 5 and the circular arc of the conductive block 22 are checked to be in a tight fit relationship; then the voltage transformer wiring row 5 is fixed to the circuit breaker 2, and the contact pressure of the circuit breaker wiring row 6 and the conductive sheet 23 is adjusted.

[0076] By installing the disconnecting switch device 100 between the circuit breaker 2 and the voltage transformer 1, the voltage transformer 1 can be maintained or replaced without power failure under the condition that the line is live. The structure is convenient to install, flexible to operate and stable in mechanical performance; the function of isolating the line side from the ground can be quickly realized without making large adjustment to the overall structure, which is conducive to the standardization design and the convenience of scheme application.

[0077] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A disconnecting switchgear for isolating and protecting between a circuit breaker (2) and a voltage transformer (1) in a switchgear cabinet, characterized in that, It includes an insulating rod (21), a conductive block (22) and a conductive sheet (23), wherein the conductive block (22) is sleeved on the insulating rod (21) and the conductive sheet (23) is fixedly connected to the conductive block (22); It also includes an operating mechanism, which drives the conductive sheet (23) and the conductive block (22) to rotate via the insulating rod (21), so that the conductive sheet (23) selectively connects or disconnects with the circuit breaker terminal block (6), while the conductive block (22) maintains an electrical connection with the voltage transformer (1) during the rotation.

2. The disconnecting switch device according to claim 1, characterized in that, The circumferential surface of the conductive block (22) is recessed with a sliding limiting groove (221), which is used to attach and limit the terminal block (5) of the voltage transformer.

3. The disconnecting switch device according to claim 1, characterized in that, The conductive block (22) is provided with a positioning surface (222). One end of the conductive sheet (23) is used to connect to the circuit breaker terminal block (6). The other end of the conductive sheet (23) is attached to the positioning surface (222) and can be detachably fixed to the positioning surface (222).

4. The disconnecting switch device according to claim 1, characterized in that, The operating mechanism includes: The main enclosure (10) is installed on the cabinet of the switch cabinet, and the insulating rod (21) is rotatably connected to the main enclosure (10); The system includes an operating lever (31) and a swing member (34). One end of the swing member (34) is connected to the insulating rod (21), and the other end of the swing member (34) is hinged to the operating lever (31). The operating lever (31) drives the insulating rod (21) to rotate by pulling the swing member (34).

5. The disconnecting switch device according to claim 4, characterized in that, The operating mechanism also includes a dynamic seal (40), which is disposed on the main housing (10). The insulating rod (21) is rotatably connected to the main housing (10) through the dynamic seal (40), and the swing member (34) is connected to the insulating rod (21) through the dynamic seal (40).

6. The disconnecting switch device according to claim 4, characterized in that, The operating mechanism also includes a guide rod (32), the first end of which is hinged to the swing member (34), and the second end of which is slidably connected to the main housing (10). The operating lever (31) drives the guide rod (32) to move through the swing member (34).

7. The disconnecting switch device according to claim 6, characterized in that, The operating mechanism also includes an elastic element (33), which is sleeved on the guide rod (32) and has its two ends abutting against the first end of the guide rod (32) and the inner wall of the main housing (10), respectively.

8. The disconnecting switch device according to claim 1, characterized in that, It also includes a bushing (24), which is sleeved on the end of the insulating rod (21). The bushing (24) is used to fix the switch cabinet to the cabinet body. The insulating rod (21) is rotatably connected to the bushing (24).

9. A switch cabinet, characterized in that, Includes the disconnecting switch device as described in any one of claims 1-8.

10. The switchgear according to claim 9, characterized in that, The switch cabinet is equipped with a grounding element (9), and the conductive sheet (23) can be connected to the grounding element (9) and disconnected from the circuit breaker terminal block (6).

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