Dry air insulation ring main unit grounding loop anti-misoperation device

Abstract

The utility model provides a dry air insulation ring main unit grounding loop anti-misoperation device, which comprises a mounting rack, a power connection assembly, a rotating shaft and an opening button, and is characterized in that the mounting rack is fixed on an internal mechanism plate of a dry air insulation ring main unit; the power connection assembly is arranged on the mounting rack, is used for connecting a breaker opening circuit, and has a power connection state and a power failure state; one end of the rotating shaft is connected with the power connection assembly, the other end of the rotating shaft is connected with an operation handle, the operation handle is rotatably connected to a panel of the dry air insulation ring main unit, and the rotating shaft is provided with a locking separation blade; one end of the opening button is connected to the mechanism plate, the other end of the opening button serves as an operation end to be connected to the panel, a clamping groove is formed in the opening button, and when the rotating shaft drives the power connection assembly to rotate to a power-off state, the locking separation blade is clamped in the clamping groove. According to the utility model, when the dry air insulation ring main unit is closed to carry out load maintenance, the breaker in the grounding loop cannot carry out manual and electric opening operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power engineering, and in particular relates to a device for preventing misoperation of a grounding circuit of a dry air insulated ring network cabinet. Background Art

[0002] The grounding circuit of an environmentally friendly gas-insulated ring main unit (RMU) consists of a three-position disconnect switch and a circuit breaker. The three-position disconnect switch is in the grounding position, and the circuit breaker is closed to connect the grounding circuit. When the RMU itself or its loads require maintenance, the grounding circuit must be connected to ensure operator safety. The cable compartment door must be opened during RMU maintenance. The circuit breaker has a locking device that prevents manual or electrical tripping of the breaker without the door closed. The three-position disconnect switch cannot be operated when the circuit breaker is closed, ensuring that the grounding circuit remains connected.

[0003] However, when the load carried by the ring main unit needs to be repaired, the door of the cable room of the ring main unit does not need to be opened. After the grounding loop is connected, the circuit breaker can be manually and electrically disconnected. The grounding loop of the ring main unit may be disconnected by mistake, causing the circuit breaker to disconnect the grounding loop. It cannot be guaranteed that the grounding loop is always in the connected state, and the safety of the operator cannot be fully guaranteed. Utility Model Content

[0004] The embodiment of the utility model provides a device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit, which is intended to ensure that the circuit breaker in the grounding circuit cannot be tripped when the load is being repaired and the cabinet door of the dry air insulated ring main unit is not opened.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a device for preventing misoperation of the grounding circuit of a dry air insulated ring network cabinet, comprising a mounting frame, a power connection assembly, a rotating shaft and a trip button, the mounting frame being used to be fixed on a mechanism plate inside the dry air insulated ring network cabinet; the power connection assembly is arranged on the mounting frame, and is used to connect the circuit breaker trip circuit, and the power connection assembly has a power-on state for conducting the circuit breaker trip circuit and a power-off state for cutting off the circuit breaker trip circuit; one end of the rotating shaft is connected to the power connection assembly, and the other end is connected to an operating handle, the operating handle is rotatably connected to the panel of the dry air insulated ring network cabinet, and is used to drive the power connection assembly to rotate to switch between the power-on state and the power-off state, and a locking baffle is provided on the rotating shaft; one end of the trip button is connected to the mechanism plate, and the other end is connected to the panel as an operating end, the trip button is provided with a card slot, and the trip button is electrically connected to the circuit breaker trip circuit; wherein, when the rotating shaft drives the power connection assembly to rotate to the power-off state, the locking baffle is engaged with the card slot.

[0006] In one possible implementation, the power connection assembly includes a power connection member and a positioning member; the power connection member is fixedly connected to the mounting frame, and the power connection member has two conductive ends, which are vertically spaced apart, one of the conductive ends is fixed, and the other conductive end cooperates with the rotating shaft and moves in the vertical direction; the positioning member is connected to the power connection member and has a through hole suitable for the rotating shaft to pass through to form a rotational fit; wherein, when the rotating shaft drives one of the conductive ends to move vertically and contact the other conductive end, the power connection assembly is in a power-connected state; when the rotating shaft rotates to drive one of the conductive ends to move vertically and separate from the other conductive end, the power connection assembly switches to a disconnected state.

[0007] In one possible implementation, the positioning member includes a positioning shell, a first baffle and a positioning plate; the positioning shell is connected to the power connection member; the first baffle is arranged on a side of the positioning shell away from the power connection member, and a through hole is provided on the first baffle; the positioning plate is arranged on the first baffle, located on the edges of the through hole, and a top block is slidably provided on the positioning plate, and the top block is used to abut the rotating shaft to limit the rotation angle of the rotating shaft.

[0008] In one possible implementation, a limit member is provided on the rotating shaft, and two limit grooves are spaced apart on the peripheral wall of the limit member. When the rotating shaft rotates until the top block is embedded in one of the limit grooves, the power connection component is in a power-on state; when the rotating shaft rotates until the top block is embedded in the other limit groove, the power connection component is switched to a disconnected state.

[0009] In a possible implementation, a protrusion is provided at one end of the top block, and the limiting groove matches the shape of the protrusion.

[0010] In one possible implementation, a slide groove is provided on the positioning plate, the top block is slidably connected to the slide groove, an elastic member is provided inside the slide groove, one end of the top block is connected to the elastic member, and is embedded in the limiting groove under the elastic force of the elastic member.

[0011] In one possible implementation, the power connection part includes a power connection shell, a second baffle and a conductive plate; the power connection shell is connected to the positioning part; the second baffle is arranged on one side of the power connection shell and is connected to the positioning part; the conductive plate is arranged on the second baffle, located inside the power connection shell, and connected to the rotating shaft.

[0012] In a possible implementation, a conductive rod is slidably provided on the conductive plate, a first conductive member is provided on the conductive rod, and a second conductive member is provided on the conductive plate. The first conductive member and the second conductive member form two conductive ends.

[0013] In a possible implementation, the power connection member further includes a cam, which is connected to the rotating shaft and abuts against the conductive rod.

[0014] In a possible implementation, the device for preventing misoperation of the grounding circuit of the dry air insulated ring main unit further includes a sealing cover, which is arranged on the panel of the dry air insulated ring main unit and is located around the edges of the operating handle.

[0015] The beneficial effect of the anti-misoperation device for the grounding circuit of the dry air insulated ring network cabinet provided by the utility model is that: compared with the existing technology, the utility model adopts a rotating shaft with a locking baffle, which can switch the power connection component to the disconnected state by rotating the rotating shaft to prevent the electric opening operation, and at the same time, make the locking baffle engage the opening button to prevent the circuit breaker from being opened by manually pressing the opening button. It can disconnect the circuit breaker opening control in both electric and manual aspects, and solve the problem that when the load carried by the isolating switch circuit breaker of the existing dry air insulated ring network cabinet is under maintenance, the dry air insulated ring network cabinet is not opened, and the grounding circuit is easily disconnected due to the circuit breaker opening, thereby affecting the personal safety of the operator; and the installation steps of the device are simple and the economic cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic front view of the structure of the anti-misoperation device for the grounding circuit of a dry air insulated ring main unit provided by an embodiment of the utility model when the power connection component is in a disconnected state;

[0017] Figure 2 This is a front view structural diagram of the power connection assembly used in the embodiment of the present utility model;

[0018] Figure 3 A schematic side view of the conductive member used in an embodiment of the present utility model;

[0019] Figure 4 A schematic front view of the structure of the anti-misoperation device for the grounding circuit of a dry air insulated ring main unit provided by an embodiment of the utility model;

[0020] Figure 5 A schematic side view of the structure of the clamping portion used in an embodiment of the present utility model;

[0021] In the figure: 10, mounting frame; 20, power connection assembly; 21, power connection member; 211, power connection shell; 212, second baffle; 213, conductive plate; 2131, conductive rod; 2132, first conductive member; 2133, second conductive member; 214, cam; 22, positioning member; 221, positioning shell; 222, first baffle; 2221, through hole; 223, positioning plate; 2231, top block; 2232, protrusion; 2233, slide groove; 2234, elastic member; 30, rotating shaft; 31, operating handle; 32, locking baffle; 33, limiting member; 331, limiting groove; 40, trip button; 41, slot; 50, sealing cover; 60, mechanism plate; 70, panel. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0024] See also Figure 1 The anti-misoperation device for the grounding circuit of the dry air insulated ring network cabinet provided by the present invention is now described. The anti-misoperation device for the grounding circuit of the dry air insulated ring network cabinet comprises a mounting frame 10, a power connection assembly 20, a rotating shaft 30 and a trip button 40. The mounting frame 10 is used to be fixed on the mechanism plate 60 inside the dry air insulated ring network cabinet; the power connection assembly 20 is arranged on the mounting frame 10 and is used to connect the circuit breaker trip circuit. The power connection assembly 20 has a power-on state for conducting the circuit breaker trip circuit and a power-off state for cutting off the circuit breaker trip circuit; one end of the rotating shaft 30 is connected to the power connection assembly 20, and the other end is connected to the operating handle 30. 1. The operating handle 31 is rotatably connected to the panel 70 of the dry air insulated ring main unit and is used to drive the power connection component 20 to rotate to switch between the power-on state and the power-off state. A locking block 32 is provided on the rotating shaft 30; one end of the trip button 40 is connected to the mechanism plate 60, and the other end is connected to the panel 70 as an operating end. The trip button 40 is provided with a card slot 41, and the trip button 40 is electrically connected to the circuit breaker trip circuit; wherein, when the rotating shaft 30 drives the power connection component 20 to rotate to the power-off state, the locking block 32 is engaged with the card slot 41.

[0025] It should be noted that the mounting frame 10 is fixed to the mechanism plate 60 through standard parts, and the locking baffle 32 is fixed to the rotating shaft 30 through standard parts; the trip button 40 is electrically connected to the circuit breaker trip circuit. When the operator presses the trip button 40, the circuit breaker can perform the trip operation; the anti-misoperation device of the grounding circuit of the dry air insulated ring network cabinet has two fixed positions with positioning. One position is the normal working position of the dry air insulated ring network cabinet. At this time, the anti-misoperation device is in a normal state, the power connection component 20 is in a power-connected state, and the locking baffle 32 is in a suspended position, which does not affect the normal operation of the dry air insulated ring network cabinet; the other position is the maintenance position of the dry air insulated ring network cabinet. By rotating the rotating shaft 30, the circuit of the internal control circuit breaker of the dry air insulated ring network cabinet is disconnected, and the power connection component 20 is switched to the disconnected state, which can prevent the electric trip operation of the circuit breaker. At the same time, the locking baffle 32 rotates into the slot 41 on the trip button 40, which can prevent the operator from performing a manual trip operation through the trip button 40.

[0026] The beneficial effect of the anti-misoperation device for the grounding circuit of the dry air insulated ring network cabinet provided by the utility model is that: compared with the existing technology, the utility model adopts a rotating shaft 30 with a locking baffle 32, which can switch the power connection component 20 to the disconnected state by rotating the rotating shaft 30 to prevent the electric opening operation, and at the same time, make the locking baffle 32 engage the opening button 40 to prevent the circuit breaker from being opened by manually pressing the opening button 40, and can disconnect the circuit breaker opening control in both electric and manual aspects, thereby solving the problem that when the load carried by the isolating switch circuit breaker of the existing dry air insulated ring network cabinet is under maintenance, the dry air insulated ring network cabinet is not opened, and the grounding circuit is easily disconnected due to the circuit breaker opening, thereby affecting the personal safety of the operator; and the installation steps of the device are simple and the economic cost is low.

[0027] In one possible implementation, see Figure 2 and Figure 3 The power connection component 20 includes a power connection component 21 and a positioning component 22; the power connection component 21 is fixedly connected to the mounting frame 10, and the power connection component 21 has two conductive ends, which are vertically spaced apart, one of which is fixed, and the other conductive end cooperates with the rotating shaft 30 and moves in the vertical direction; the positioning component 22 is connected to the power connection component 21 and has a through hole 2221 suitable for the rotating shaft 30 to pass through to form a rotational fit; wherein, when the rotating shaft 30 drives one of the conductive ends to move vertically and contact the other conductive end, the power connection component 20 is in a power-connected state; when the rotating shaft 30 rotates to drive one of the conductive ends to move vertically and separate from the other conductive end, the power connection component 20 switches to a disconnected state.

[0028] It should be noted that the power connection member 21 is fixedly connected to the mounting bracket 10. The two conductive ends of the power connection member 21 can conduct a circuit when in contact, so that the power connection assembly 20 is in a power-on state, and can disconnect the circuit when separated, so that the power connection assembly 20 is switched to a disconnected state; one of the conductive ends is fixed, and the other conductive end reciprocates in the vertical direction under the rotation of the rotating shaft 30 to achieve the effect of contacting or disconnecting the two conductive ends; the positioning member 22 is fixedly connected to the power connection member 21, and the rotating shaft 30 penetrates into the power connection member 21 and the positioning member 22 and is rotatably connected to the positioning member 22. The positioning member 22 can position the rotating shaft 30 when the rotating shaft 30 rotates and switches the working state of the power connection assembly 20, thereby preventing the rotating shaft 30 from rotating at any angle after the power connection assembly 20 is switched to the disconnected state, causing the power connection assembly 20 to be energized, and thus avoiding the circuit breaker from being electrically opened. During load maintenance, the grounding circuit is always connected, thereby ensuring the personal safety of the operator.

[0029] In one possible implementation, see Figure 3 and Figure 4 The positioning member 22 includes a positioning shell 221, a first baffle 222 and a positioning plate 223; the positioning shell 221 is connected to the power connection member 21; the first baffle 222 is arranged on the side of the positioning shell 221 away from the power connection member 21, and the first baffle 222 is provided with a through hole 2221; the positioning plate 223 is arranged on the first baffle 222, located on the edges of the through hole 2221, and a top block 2231 is slidably provided on the positioning plate 223, and the top block 2231 is used to abut the rotating shaft 30 to limit the rotation angle of the rotating shaft 30.

[0030] The through hole 2221 can be used to limit the installation position of the rotating shaft 30, so that the rotating shaft 30 is always in the same horizontal plane when rotating, thereby preventing the rotating shaft 30 from being deflected and affecting the abutment effect between the cam 214 on the rotating shaft 30 and the push rod, thereby improving the effect of switching the working state of the power connection component 20, and ensuring that the circuit in the circuit breaker is disconnected when the load is under maintenance and the cabinet door is not opened, thereby avoiding the circuit breaker from performing an electric opening operation; the top block 2231 slidably arranged on the positioning plate 223 can abut the rotating shaft 30 when the rotating shaft 30 rotates, so as to achieve the effect of limiting the rotation angle of the rotating shaft 30, thereby preventing the rotating shaft 30 from rotating freely and causing the working state of the power connection component 20 to switch arbitrarily, thereby ensuring that the circuit breaker circuit is disconnected when the load is under maintenance and the cabinet door is not opened, thereby avoiding the circuit breaker from performing an electric opening operation, thereby ensuring the personal safety of the operator.

[0031] In one possible implementation, see Figure 4A limit member 33 is provided on the rotating shaft 30, and two limit grooves 331 are spaced apart on the circumferential wall of the limit member 33. When the rotating shaft 30 rotates until the top block 2231 is embedded in one of the limit grooves 331, the power connection component 20 is in the power-on state; when the rotating shaft 30 rotates until the top block 2231 is embedded in the other limit groove 331, the power connection component 20 is switched to the disconnected state.

[0032] When the breaker 30 is in a closed position, the second stopper 2234 is in a closed position, and the second stopper 2234 is in a closed position, so that the breaker 30 can move freely without any loose powder or liquid in the event of a fire.

[0033] In one possible implementation, see Figure 4 A convex head 2232 is provided at one end of the top block 2231 , and the limiting groove 331 matches the shape of the convex head 2232 .

[0034] It should be noted that a protrusion 2232 is provided at one end of the top block 2231 that abuts against the limiting member 33. The protrusion 2232 that abuts against the limiting member 33 can have an arc-shaped surface, and a groove that matches the shape of the protrusion 2232 can be provided in the limiting groove 331. When the limiting groove 331 and the top block 2231 are aligned in the vertical direction, the top block 2231 slides into the limiting groove 331, and the protrusion 2232 enters the groove, so that the top block 2231 is clamped in the limiting groove 331, limiting the rotation of the shaft 30. The rotation angle is to avoid the operator from manually opening the circuit breaker when repairing the load; the surfaces of the limit member 33 and the top block 2231 are both arc-shaped, and the surface of the limit member 33 is composed of multiple arcs of different shapes spliced ​​together. When the limit member 33 rotates, the protrusion 2232 can slide out of the groove of the limit groove 331, avoiding the protrusion 2232 and the groove being too tightly plugged in, resulting in the shaft 30 being unable to rotate, affecting the normal use of the dry air insulated ring network cabinet after maintenance.

[0035] In one possible implementation, see Figure 4 A slide groove 2233 is provided on the positioning plate 223, and the top block 2231 is slidably connected to the slide groove 2233. An elastic member 2234 is provided inside the slide groove 2233. One end of the top block 2231 is connected to the elastic member 2234 and is embedded in the limiting groove 331 under the elastic force of the elastic member 2234.

[0036] It should be noted that the top block 2231 is slidably connected in the slide groove 2233, and the elastic member 2234 can be a spring, one end of which is connected to the inner wall of the slide groove 2233 and the other end is connected to the top block 2231, which can provide the top block 2231 with a thrust to slide out of the second slide groove 2233, so that the top block 2231 can be embedded in the limit groove 331 under the elastic force of the elastic member 2234, so that the rotating shaft 30 can rotate at a certain angle, and the locking baffle 32 can be fixed after being engaged with the slot 41 on the trip button 40, to prevent the rotating shaft 30 from rotating freely and causing the locking baffle 32 to rotate out of the slot 41, to prevent the circuit breaker from being able to perform manual tripping operation when the cabinet is closed for load maintenance, and to ensure that the grounding circuit of the dry air insulated ring network cabinet is always connected during load maintenance.

[0037] In one possible implementation, see Figure 2 and Figure 3 The power connection part 21 includes a power connection shell 211, a second baffle 212 and a conductive plate 213; the power connection shell 211 is connected to the positioning member 22; the second baffle 212 is arranged on one side of the power connection shell 211 and is connected to the positioning member 22; the conductive plate 213 is arranged on the second baffle 212, located inside the power connection shell 211, and connected to the rotating shaft 30.

[0038] It should be noted that a fixing hole is provided on the positioning member 22, and the second baffle 212 is connected to each other by bolts fixed in the fixing holes of the positioning member 22. A conductive plate 213 is provided on the second baffle 212, and the conductive plate 213 can be connected to the rotating shaft 30 and driven to rotate by the rotating shaft 30 to switch the working state of the power connection component 20, so that when the rotating shaft 30 rotates to cause the locking baffle 32 to engage the card slot 41 of the closing button, the current circuit of the circuit breaker is disconnected, preventing the electric closing operation of the circuit breaker, and ensuring the personal safety of the operator.

[0039] In one possible implementation, see Figure 5 A conductive rod 2131 is slidably provided on the conductive plate 213 , a first conductive member 2132 is provided on the conductive rod 2131 , a second conductive member 2133 is provided on the conductive plate 213 , and the first conductive member 2132 and the second conductive member 2133 form two conductive ends.

[0040] It should be noted that one end of the conductive rod 2131 can be connected to the conductive plate 213 through a spring. When the first conductive member 2132 contacts the second conductive member 2133, the current circuit of the circuit breaker is connected; when the second conductive member 2133 separates from the second conductive member 2133, the current circuit of the circuit breaker is disconnected.

[0041] In one possible implementation, see Figure 5The electrical connection member 21 further includes a cam 214 , which is connected to the rotating shaft 30 and abuts against the conductive rod 2131 .

[0042] It should be noted that the connection and disconnection between the first conductive member 2132 and the second conductive member 2133 is controlled by the rotating shaft 30. The cam 214 is connected to the rotating shaft 30 and is driven by the rotating shaft 30 to rotate the cam 214. The cam 214 is located inside the conductive plate 213 and abuts against the conductive rod 2131. The surface of the cam 214 has a convex surface and a concave surface. When the rotating shaft 30 drives the convex surface of the cam 214 to align with the conductive rod 2131, the cam 214 pushes the conductive rod 2131 and causes the conductive rod 2131 to slide outward from the conductive plate 213. The first conductive member 2132 is connected to the rotating shaft 30 and is driven by the rotating shaft 30 to rotate the cam 214. 132 is disconnected from the second conductive member 2133; when the shaft 30 rotates to align the concave surface of the cam 214 with the conductive rod 2131, the spring pushes the conductive rod 2131 so that the conductive rod 2131 abuts against the concave surface of the cam 214, and the first conductive member 2132 and the second conductive member 2133 are connected; the working state of the power connection component 20 is switched by the rotation of the shaft 30, and the current circuit of the circuit breaker can be disconnected when the load is repaired in the closed cabinet state, avoiding the circuit breaker from performing an electric opening operation, ensuring that the grounding circuit is always connected, and protecting the personal safety of the operator.

[0043] In one possible implementation, see Figure 1 and Figure 2 The anti-misoperation device for the grounding circuit of the dry air insulated ring network cabinet also includes a sealing cover 50, which is arranged on the panel 70 of the dry air insulated ring network cabinet and is located around the edges of the operating handle 31.

[0044] It should be noted that the sealing cover 50 is fixed to the panel 70 through standard parts, which can cover the operating handle 31 and can be locked with a padlock or a warning padlock. The operating handle 31 cannot be operated before the maintenance is completed, ensuring that the grounding circuit is in an on state and protecting the safety of the operator.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Anti-misoperation device for grounding circuit of dry air insulated ring main unit, characterized in that: include: Mounting frame, used for fixing on the mechanism plate inside the dry air insulated ring main unit; A power connection assembly is provided on the mounting frame and is used to connect to the circuit breaker tripping circuit. The power connection assembly has a power-on state for conducting the circuit breaker tripping circuit and a power-off state for cutting off the circuit breaker tripping circuit. A rotating shaft, one end of which is connected to the power connection assembly, and the other end of which is connected to an operating handle, wherein the operating handle is rotatably connected to the panel of the dry air insulated ring network cabinet and is used to drive the power connection assembly to rotate to switch between the power-on state and the power-off state, and a locking block is provided on the rotating shaft; A trip button, one end of which is connected to the mechanism plate, and the other end of which is connected to the panel as an operating end. The trip button is provided with a card slot, and the trip button is electrically connected to the circuit breaker trip circuit; When the rotating shaft drives the power connection assembly to rotate to the power-off state, the locking baffle is engaged with the locking slot.

2. The anti-misoperation device for the grounding circuit of the dry air insulated ring main unit according to claim 1, characterized in that: The power connection assembly includes: An electrical connection piece is fixedly connected to the mounting frame, and has two conductive ends, the two conductive ends are vertically spaced apart, one of the conductive ends is fixed, and the other conductive end cooperates with the rotating shaft and moves in the vertical direction; a positioning member connected to the power connection member and having a through hole suitable for the rotation shaft to pass through to form a rotational fit; When the rotating shaft drives one of the conductive ends to move vertically and contact the other conductive end, the power connection component is in a power-connected state; when the rotating shaft rotates to drive one of the conductive ends to move vertically and separate from the other conductive end, the power connection component switches to a disconnected state.

3. The anti-misoperation device for the grounding circuit of the dry air insulated ring main unit according to claim 2, characterized in that: The positioning member includes: A positioning housing connected to the electrical connection piece; a first baffle, disposed on a side of the positioning housing away from the power connection member, the first baffle being provided with the through hole; A positioning plate is provided on the first baffle and is located at the edges of the through hole. A top block is slidably provided on the positioning plate, and the top block is used to abut against the rotating shaft to limit the rotation angle of the rotating shaft.

4. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 3, characterized in that: A limit piece is provided on the rotating shaft, and two limit grooves are distributed at intervals on the circumferential wall of the limit piece. When the rotating shaft rotates until the top block is embedded in one of the limit grooves, the power connection component forms the power connection state; when the rotating shaft rotates until the top block is embedded in the other limit groove, the power connection component switches to the disconnection state.

5. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 4, characterized in that: A convex head is provided at one end of the top block, and the limiting groove matches the shape of the convex head.

6. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 4, characterized in that: A sliding groove is provided on the positioning plate, and the top block is slidably connected to the sliding groove. An elastic member is provided inside the sliding groove, and one end of the top block is connected to the elastic member and is embedded in the limiting groove under the elastic force of the elastic member.

7. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 2, wherein: The power connection piece includes: An electrical connection housing connected to the positioning member; A second baffle is provided on one side of the power connection housing and is connected to the positioning member; The conductive plate is provided on the second baffle, is located inside the power connection housing, and is connected to the rotating shaft.

8. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 7, characterized in that: A conductive rod is slidably provided on the conductive plate, a first conductive member is provided on the conductive rod, a second conductive member is provided on the conductive plate, and the first conductive member and the second conductive member form the two conductive ends.

9. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to claim 8, characterized in that: The power connection piece further includes a cam, which is connected to the rotating shaft and abuts against the conductive rod.

10. The device for preventing misoperation of the grounding circuit of a dry air insulated ring main unit according to any one of claims 1 to 9, characterized in that: The dry air insulated ring network cabinet grounding circuit anti-misoperation device also includes a sealing cover, which is arranged on the panel of the dry air insulated ring network cabinet and located around the edges of the operating handle.

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