Intelligent control outdoor vacuum circuit breaker suitable for 10kV high voltage

Abstract

The invention provides an intelligent control outdoor vacuum circuit breaker suitable for 10kV high voltage. The intelligent control outdoor vacuum circuit breaker comprises a circuit breaker assembly and an isolation assembly. The circuit breaker assembly comprises a shell structure, and the shell structure is provided with a circuit breaking operation mechanism used for controlling the on-off of the vacuum arc extinguishing device. The isolation assembly comprises a front end plate frame and an isolation switch. The inner side of the front end plate frame is provided with an isolation operation mechanism used for controlling the opening and closing of the isolation switch. The isolation operation mechanism comprises an operation rotating shaft, a first swing arm fixedly connected to the operation rotating shaft in a sleeving mode and a spring telescopic arm hinged to the first swing arm, and a first rotating shaft is arranged at the end, away from the first swing arm, of the spring telescopic arm. And the first rotating shaft and the shaft seat mechanism are connected with each other in a movable clamping manner and realize rotation. On the basis, the use condition of the interlocking structure can be conveniently observed, whether the interlocking structure can be normally used or not can be judged, meanwhile, external parts can be conveniently overhauled and replaced when faults or damage occurs, and the maintenance period is shortened.

Description

Technical Field

[0001] This application relates to the technical field of circuit breakers, and particularly to an intelligent control outdoor vacuum circuit breaker suitable for 10 kV high voltage. Background Art

[0002] A 10 kV high voltage intelligent control outdoor vacuum circuit breaker is a high voltage circuit breaker that uses vacuum as the arc extinguishing medium, with a rated voltage of 10 kV. It can achieve the intelligent control function of the electrical network by connecting an external "watchdog". When overcurrent, short circuit or grounding fault occurs in the circuit, the circuit breaker can quickly act to cut off the fault current, thus protecting the safety of the circuit and equipment; its working principle is mainly based on vacuum arc extinguishing technology, using the high electric field strength in vacuum to quickly extinguish the arc and achieve the disconnection of the circuit.

[0003] The 10 kV high voltage intelligent control outdoor vacuum circuit breaker is widely used in urban power grids, new energy power generation, rail transit and other fields. In the construction of urban power grids, it can improve the safety and stability of the power grid, reduce the power outage time and scope; in the field of new energy power generation, such as wind power and photovoltaic, it can quickly respond to power grid faults and cut off the fault points to ensure the stable operation of the new energy power generation system; in the field of rail transit, it can meet the reliability and safety requirements of the power supply system and ensure the safe operation of rail transit.

[0004] According to national standards, outdoor vacuum circuit breakers need to have both electric control and manual control structures at the same time; outdoor vacuum circuit breakers usually include two main parts: a vacuum arc extinguishing device and a disconnector in terms of structure. In the specific operation process, whether it is electric control or manual control, it is necessary to follow a specific sequence: when the power needs to be cut off, the vacuum arc extinguishing device must be disconnected first, and then the disconnector is switched off; when the power is reconnected, the disconnector must be switched on first, and then the vacuum arc extinguishing device is connected. The wrong operation method may cause serious losses and damage to the power system, while the correct operation method can ensure the safety of electricity use. Therefore, it is necessary to design the structure and install an interlock structure to make the operation of the circuit breaker and the disconnector follow a specific sequence.

[0005] However, currently, the interlock structure of outdoor vacuum circuit breakers on the market is usually set inside the housing of the vacuum circuit breaker. On the one hand, it is difficult to judge whether the interlock structure can work properly by photographing or visual inspection. On the other hand, when the interlock structure is damaged or the vacuum circuit breaker fails, maintenance personnel need to disassemble the entire outdoor vacuum circuit breaker to replace the internal structure, and the maintenance time cycle is relatively long, which needs to be improved. Summary of the Invention

[0006] Based on this, the present application provides an intelligent control outdoor vacuum circuit breaker applicable to 10 kV high voltage, which can conveniently observe the usage of the interlocking structure, judge whether it can be used normally, and at the same time can conveniently repair and replace external parts in case of failure or damage, shortening the maintenance cycle.

[0007] The intelligent control outdoor vacuum circuit breaker applicable to 10 kV high voltage provided by the present application adopts the following technical solutions: The intelligent control outdoor vacuum circuit breaker applicable to 10 kV high voltage includes a circuit breaker assembly and an isolation assembly; the circuit breaker assembly includes a housing structure and a solid-sealed pole column fixed to the housing structure. A vacuum arc extinguishing device is provided inside the solid-sealed pole column, and a circuit breaker operating mechanism for controlling the on-off of the vacuum arc extinguishing device is provided inside the housing structure; The isolation assembly includes a front end plate frame fixed to the housing structure and a disconnecting switch fixed to the front end plate frame. An isolation operating mechanism for controlling the opening and closing of the disconnecting switch is provided inside the front end plate frame; wherein, the isolation operating mechanism includes an operating rotating shaft, a first swing arm fixedly sleeved on the operating rotating shaft, and a spring telescopic arm hinged to the first swing arm. A first rotating shaft is provided at one end of the spring telescopic arm away from the first swing arm, and a shaft seat mechanism is provided on the housing structure. The first rotating shaft and the shaft seat mechanism are connected to each other in a movable clamping manner and can rotate; An interlocking mechanism is provided between the operating rotating shaft and the circuit breaker operating mechanism. The interlocking mechanism includes a first interlocking member connected to the circuit breaker operating mechanism and a second interlocking member fixedly sleeved on the operating rotating shaft. The first interlocking member is located outside the housing structure; the first interlocking member and the second interlocking member cooperate with each other and lock to realize the sequential operation of the vacuum arc extinguishing device and the disconnecting switch.

[0008] By adopting the above technical solutions, in the present application, the first interlocking member and the second interlocking member are both arranged outside the housing structure. When the outdoor circuit breaker is in normal use, the positions and states of the first interlocking member and the second interlocking member can be clearly seen by means of camera shooting or drone shooting, etc. Furthermore, the usage state of the interlocking mechanism can be judged by visual inspection to determine whether it can work normally. In addition, the first rotating shaft and the shaft seat mechanism in the present application are connected in a movable clamping manner. When it is found that the interlocking mechanism is damaged or the outdoor circuit breaker fails, by removing the connecting components between the front end plate frame and the housing structure, the first rotating shaft can be conveniently detached from the shaft seat mechanism. At this time, the first interlocking member connected to the circuit breaker operating mechanism can be separated from the second interlocking member connected to the operating rotating shaft, so as to facilitate the maintenance personnel to perform corresponding repairs and replacements on the damaged parts, which can shorten the overall maintenance cycle and is beneficial to quickly restoring power supply.

[0009] Optionally, the spring telescopic arm includes a first arm rod and a second arm rod that are movably inserted into each other, and a compression spring disposed between the first arm rod and the second arm rod. A second hinge member is provided at the end of the second arm rod, and the second arm rod is rotatably connected to the first swing arm through the second hinge member; A first hinge member is provided at the end of the first arm rod. Two limiting portions are formed by cutting on the outer side surface of the first hinge member, and the two limiting portions are symmetrically arranged. In the assembled state, the side surfaces of the two limiting portions respectively abut against the shaft seat mechanism; there are two first rotating shafts, and the two first rotating shafts are respectively fixed to the two limiting portions.

[0010] By adopting the above technical solution, the first arm rod of the present application is hinged to the shaft seat mechanism through the first hinge member, the second arm rod is hinged to the first swing arm through the second hinge member, and the compression spring is disposed between the first arm rod and the second arm rod. When the operator controls the operation of the rotating shaft to rotate, the hinge joint between the second arm rod and the first swing arm passes through the narrowest position between the operation shaft rod and the housing structure, which can change the tangential component of the elastic force received by the operation rotating shaft, so as to force the disconnecting switch to remain in the closed or open state.

[0011] Optionally, the shaft seat mechanism includes a fixed base and two arc-shaped clamping seats. The fixed base is fixed to the outer surface of the housing structure. Two supporting portions are convexly provided on the side surface of the fixed base away from the housing structure, and an arc-shaped groove matching and fitting with the first rotating shaft is provided on the surface of the supporting portion; The two arc-shaped clamping seats are respectively clamped to the two supporting portions through a limiting structure. An inner arc groove is provided on the side surface of the arc-shaped clamping seat. In the assembled state, the supporting portion enters the inner arc groove, and the inner arc groove and the arc-shaped groove jointly enclose a clamping space for the first rotating shaft to rotate.

[0012] By adopting the above technical solution, by respectively clamping the two arc-shaped clamping seats to the two supporting portions, a clamping space can be formed between the arc-shaped groove and the inner arc groove for installing the first rotating shaft, and the first rotating shaft can rotate circumferentially around its own central axis.

[0013] Optionally, the limiting structure includes a pin column provided on the fixed base, a pin hole opened on the arc-shaped clamping seat, and a resisting member provided on the limiting portion. In the assembled state, the pin column is inserted into the pin hole in a matching manner, and the resisting member abuts against the arc-shaped clamping seat in a matching manner and forces the arc-shaped clamping seat to be tightly abutted against the fixed base.

[0014] By adopting the above technical solution, by providing a resisting member at the limiting portion of the arc-shaped clamping seat, when the front end plate frame is fixed to the housing structure through a connecting member, the arc-shaped clamping seat enters between the two supporting portions, and the resisting member provided at the limiting portion of the first hinge member can abut against the arc-shaped clamping seat and force the arc-shaped clamping seat to tightly abut against the fixed base, so as to limit the movement of the arc-shaped clamping seat in the direction away from the fixed base; in addition, through the cooperation of the pin column and the pin hole between the arc-shaped clamping seat and the fixed base, the movement of the arc-shaped clamping seat in the vertical plane can be limited, thereby firmly fixing the first rotating shaft in the clamping space formed by the arc-shaped groove and the inner arc groove.

[0015] Optionally, a notch is provided at a part of the first rotating shaft. When the disconnecting switch is in the closed state, the inner side surface of the notch is arranged vertically; a locking portion is provided at a part of the first interlocking member. When the vacuum arc extinguishing device is switched from the off state to the connected state, the locking portion moves upward and is inserted into the notch and abuts against the inner side surface of the notch.

[0016] By adopting the above technical solution, when the disconnecting switch is in the closed state and the vacuum arc extinguishing device needs to be reconnected, the opening and closing operating mechanism is forced to act, and the locking portion can be smoothly inserted into the notch. At this time, the locking portion can be matched and abutted against the inner side surface of the notch, thereby restricting the rotation of the first rotating shaft, which is beneficial to keeping the disconnecting switch in the closed state and thus preventing the accidental opening of the disconnecting switch when the vacuum arc extinguishing device is connected.

[0017] Optionally, a telescopic member is provided between the arc-shaped clamping seat and the housing structure. One end of the telescopic member is hinged to the arc-shaped clamping seat, and the other end is hinged to the housing structure.

[0018] By adopting the above technical solution, the arc-shaped clamping seat is hinged to the housing structure through the telescopic member. When the connecting member between the front end plate frame and the housing structure is removed, the arc-shaped clamping seat can remain connected to the housing structure after separating from the fixed base, reducing the possibility of accidental dropping and loss of the arc-shaped clamping seat.

[0019] Optionally, the first interlocking member is vertically slidably installed on the outer surface of the housing structure. When the vacuum arc extinguishing device is in the connected state, the first interlocking member is at the highest position, and when the vacuum arc extinguishing device is in the off state, the first interlocking member is at the lowest position; a limiting clamping seat is provided at a part of the first interlocking member, and a limiting groove is provided at the top of the limiting clamping seat; The second interlocking member includes a second swing arm fixedly sleeved on the operating rotating shaft. A limiting column is inserted at one end of the second swing arm away from the operating rotating shaft. When the vacuum arc extinguishing device is switched from the off state to the connected state, the first interlocking member moves upward to force the limiting column to be matched and enter the limiting groove; when the vacuum arc extinguishing device is in the off state, the limiting clamping seat is outside the moving path of the limiting column.

[0020] By adopting the above technical solution, when the vacuum interrupter is in the open state, the first interlocking member is at the lowest position. When the disconnector is closed, the first interlocking member moves upward driven by the opening and closing operating mechanism, and the limiting column is inserted into the limiting groove, which can limit the rotation of the operating rotating shaft, thereby preventing the accidental opening of the disconnector when the vacuum arc extinguishing device is connected.

[0021] Optionally, the second interlocking member further includes a third swing arm fixedly sleeved on the operating rotating shaft. The third swing arm is partially provided with a hook groove arranged in an arc shape, and the axis of the arc of the hook groove coincides with the rotation axis of the third swing arm; a hook column is installed on the first interlocking member. When the disconnector switches from the closed state to the open state, the third swing arm gradually approaches the hook column and the hook column is fitted and clamped in the hook groove.

[0022] By adopting the above technical solution, when the vacuum interrupter is in the open state, by controlling the rotation of the operating rotating shaft to switch the disconnector from the closed state to the open state, the third swing arm can be gradually close to the hook column, and finally the hook column is fitted into the hook groove of the third swing arm, which can limit the movement of the first interlocking member, thereby preventing the accidental connection of the vacuum arc extinguishing device when the disconnector is opened.

[0023] Optionally, a sliding sleeve is fixed to the first interlocking member, the hook column is slidably inserted into the sliding sleeve, and an anti-detachment portion for restricting the hook column from detaching from the sliding sleeve is provided at the end of the hook column. A return spring is provided between the anti-detachment portion and the sliding sleeve; A pushing rod is slidably installed inside the sliding sleeve, and the return spring is used to force the anti-detachment portion to normally abut against the pushing rod; a locking structure is provided between the pushing rod and the sliding sleeve. When the pushing rod is locked with the sliding sleeve through the locking structure, the hook column remains exposed outside the sliding sleeve for the third swing arm to cooperate and hook for positioning.

[0024] By adopting the above technical solution, when the pushing rod is locked with the sliding sleeve through the locking structure, the pushing rod can force the anti-detachment portion to compress the return spring. At this time, the return spring is in a compressed state, and the hook column can remain exposed outside the sliding sleeve for the third swing arm to cooperate and hook with the hook column. In addition, when the outdoor circuit breaker fails and needs to be replaced, by releasing the lock between the pushing rod and the sliding sleeve, the hook column retracts into the sliding sleeve under the elastic force of the return spring, which can release the hooking and positioning between the hook column and the third swing arm, so that the maintenance personnel can smoothly separate the circuit breaker assembly and the isolation assembly, and quickly repair and replace each functional component.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging the first interlock and the second interlock outside the housing structure, when the outdoor circuit breaker is in normal use, the positions and states of the first interlock and the second interlock can be clearly seen by means of camera shooting or drone shooting, etc. Furthermore, the use state of the interlock mechanism can be judged by visual inspection to determine whether it can function properly; 2. The arc-shaped clamping seat and the fixed base are positioned by the cooperation of the pin column and the pin hole, and the resisting piece on the first hinge forces the arc-shaped clamping seat to be tightly pressed against the fixed base, which can stably install the arc-shaped clamping seat on the fixed base in the assembled state and enable the first rotating shaft to be smoothly arranged in the clamping space and rotate smoothly; 3. By arranging the telescopic member to connect the arc-shaped clamping seat with the housing structure, after removing the connecting components between the front end plate frame and the housing structure, the possibility of accidental dropping and loss of the arc-shaped clamping seat can be reduced to ensure the normal use of the shaft seat mechanism. Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of this embodiment; Figure 2 is Figure 1 the enlarged view of part A in Figure 3 is the structural schematic diagram of the position of the spring telescopic arm and the shaft seat mechanism in this embodiment; Figure 4 is the structural schematic diagram of the spring telescopic arm in this embodiment; Figure 5 is the structural schematic diagram of the shaft seat mechanism with the arc-shaped clamping seat in a sectional view in this embodiment; Figure 6 is the structural schematic diagram of the operating rotating shaft and the interlock mechanism in this embodiment; Figure 7 is Figure 6 the enlarged view of part B in Figure 8 is the half-sectional view of the sliding sleeve in this embodiment, mainly showing the internal structure of the sliding sleeve.

[0027] Description of the Reference Numerals: 1. Housing structure; 2. Solid-sealed pole column; 21. Support insulator; 3. Front end plate frame; 31. Fastener; 4. Disconnector; 41. Wiring seat; 411. Static contact; 42. Isolating switch blade; 421. Moving contact; 5. Isolation operating mechanism; 51. Operating rotating shaft; 52. First swing arm; 521. Second rotating shaft; 53. Spring telescopic arm; 54. First arm rod; 541. First rotating shaft; 5411. Notch; 542. First hinge; 543. Limiting part; 544. Blocking part; 55. Second arm rod; 551. Second hinge; 56. Compression spring; 57. Fourth swing arm; 58. Pull rod insulator; 6. Axle seat mechanism; 61. Fixed base; 611. Supporting part; 612. Arc groove; 613. Pin column; 62. Arc clamping seat; 621. Inner arc groove; 622. Pin hole; 63. Telescopic rod member; 7. Interlocking mechanism; 8. First interlocking member; 81. Limiting clamping seat; 811. Limiting groove; 82. Locking part; 83. Sliding sleeve; 831. One - character card slot; 84. Hooking column; 841. Anti - detachment part; 85. Return spring; 86. Pushing rod member; 861. One - character stop block; 9. Second interlocking member; 91. Second swing arm; 911. Limiting column; 92. Third swing arm; 921. Hooking groove. Detailed implementation mode

[0028] The following is further described in detail in conjunction with the attached Figures 1 - 8 This application.

[0029] The embodiment of this application discloses an intelligent control outdoor vacuum circuit breaker applicable to 10kV high voltage.

[0030] Refer to Figure 1 , an intelligent control outdoor vacuum circuit breaker applicable to 10kV high voltage, includes a circuit breaker assembly, an isolation assembly and a watchdog control assembly (not shown in the figure). The watchdog control assembly is electrically connected to both the circuit breaker assembly and the isolation assembly at the same time, thus having multiple functions such as fault detection, protection control and communication, and being able to realize the intelligent control of the outdoor vacuum circuit breaker to ensure the stable operation of the cable system.

[0031] The circuit breaker assembly includes a housing structure 1 and a solid - sealed pole column 2 fixed to the housing structure 1. A vacuum arc - extinguishing device (not shown in the figure) is arranged inside the solid - sealed pole column 2; a circuit - breaking operating mechanism is arranged inside the housing structure 1, and the connection and disconnection of the vacuum arc - extinguishing device can be controlled through the circuit - breaking operating mechanism. It should be noted here that the specific structures of the circuit - breaking operating mechanism and the vacuum arc - extinguishing device are conventional designs in the art and will not be elaborated in detail here.

[0032] The isolation assembly includes a front end plate frame 3 and a disconnecting switch 4. The front end plate frame 3 is fixed to the side of the housing structure 1 by fasteners 31. The disconnecting switch 4 includes a terminal block 41 and a disconnecting knife switch 42. One end of the disconnecting knife switch 42 is rotatably connected to the support insulator 21 of the solid-sealed pole column 2, and the other end of the disconnecting knife switch 42 is provided with a moving contact 421. The terminal block 41 is fixed to the top of the front end plate frame 3, and the top of the terminal block 41 has a static contact 411. When the disconnecting knife switch 42 rotates downward, the moving contact 421 can abut against the static contact 411 of the terminal block 41 to realize the closing action of the disconnecting switch 4.

[0033] In addition, referring to Figure 2 , an isolation operating mechanism 5 is provided inside the front end plate frame 3. The isolation operating mechanism 5 includes an operating rotating shaft 51 rotatably installed on the front end plate frame 3, a fourth swing arm 57 fixedly sleeved on the operating rotating shaft 51, and a pull rod insulator 58 hinged to the fourth swing arm 57. One end of the pull rod insulator 58 away from the fourth swing arm 57 is hinged to the middle section of the disconnecting knife switch 42. When the operating rotating shaft 51 is controlled to rotate, the fourth swing arm 57 can drive the pull rod insulator 58 to move upward, and then drive the moving contact 421 of the disconnecting knife switch 42 to separate from the static contact 411 of the terminal block 41 to realize the opening action of the disconnecting switch 4.

[0034] Referring to Figure 3 , the isolation operating mechanism 5 further includes a first swing arm 52 fixedly sleeved on the operating rotating shaft 51 and a spring telescopic arm 53 hinged to the first swing arm 52. At the same time, referring to Figure 4 , the spring telescopic arm 53 includes a first arm rod 54, a second arm rod 55 and a compression spring 56. One end of the second arm rod 55 is provided with an integrally formed second hinge member 551, and the second hinge member 551 is rotatably connected to the first swing arm 52 through a second rotating shaft 521, so that the second arm rod 55 can be hinged to the first swing arm 52. One end of the second arm rod 55 away from the first swing arm 52 is movably inserted into the first swing arm 52, and the length of the spring telescopic arm 53 can be extended and retracted.

[0035] Referring to Figure 4 , one end of the first arm rod 54 away from the second arm rod 55 is provided with an integrally formed first hinge member 542. The first hinge member 542 in this embodiment is a cylinder, and two limiting portions 543 are formed on the side of the first hinge member 542 by cutting. The two limiting portions 543 are symmetrically arranged along the central axis of the first hinge member 542. And, a first rotating shaft 541 is integrally formed on the side of each limiting portion 543, so that the first rotating shaft 541 is located at one end of the spring telescopic arm 53 away from the first swing arm 52.

[0036] Returning to Figure 3, a shaft seat mechanism 6 is installed on the side of the housing structure 1. The first rotating shaft 541 and the shaft seat mechanism 6 are connected to each other in a movable clamping manner to realize the rotational installation of the spring telescopic arm 53 on the housing structure 1. Specifically, the shaft seat mechanism 6 includes a fixed base 61 and an arc-shaped clamping seat 62. The fixed base 61 is fixed on the outer surface of the housing structure 1; at the same time, referring to Figure 5 , two supporting parts 611 are protrudingly arranged on the side of the fixed base 61 away from the housing structure 1, and the two supporting parts 611 are arranged at intervals; in the assembled state, that is, when the front end plate frame 3 is fixed to the housing structure 1 by the fastener 31, the first hinge 542 can enter between the two supporting parts 611, and the sides of the two limiting parts 543 on the first hinge 542 can respectively abut against the adjacent supporting parts 611.

[0037] Referring to Figure 5 , there are two arc-shaped clamping seats 62. The two arc-shaped clamping seats 62 are respectively clamped to the two supporting parts 611 through the limiting structure; and, an inner arc groove 621 is provided on the side of each arc-shaped clamping seat 62, and an arc groove 612 is provided on the side of the supporting part 611 away from the fixed base 61. In the assembled state, the supporting part 611 can enter the inner arc groove 621, and the inner arc groove 621 and the arc groove 612 can jointly enclose a clamping space. The first rotating shaft 541 can be located in the clamping space and can be matched and attached to the inner arc groove 621 and the arc groove 612, and the first rotating shaft 541 can rotate circumferentially around its own central axis.

[0038] The limiting structure here includes a pin 613, a pin hole 622 and a resisting part 544. Among them, the pin 613 is fixed on the side of the fixed base 61 away from the housing structure 1, and the pin hole 622 is opened on the side of the arc-shaped clamping seat 62; in this embodiment, the pin hole 622 and the inner arc groove 621 are on the same side of the arc-shaped clamping seat 62, and the pin 613 and the pin hole 622 can be matched and inserted to limit the movement of the arc-shaped clamping seat 62 in the vertical plane. The resisting part 544 is integrally formed on the side of the limiting part 543 of the first hinge 542. In the assembled state, the resisting part 544 can be matched and attached to the arc-shaped clamping seat 62 and force the arc-shaped clamping seat 62 to abut against the fixed base 61, thereby restricting the arc-shaped clamping seat 62 from moving away from the housing structure 1, realizing the movable connection between the first rotating shaft 541 and the shaft seat mechanism 6, and facilitating subsequent disassembly, inspection, maintenance and repair.

[0039] Return to Figure 3, a telescopic rod member 63 is provided between each arc-shaped clamping seat 62 and the housing structure 1. One end of the telescopic rod member 63 is hinged to the arc-shaped clamping seat 62, and the other end is hinged to the housing structure 1; the length of the telescopic rod member 63 can be freely adjusted. Thus, after the front panel frame 3 and the housing structure 1 are removed, the arc-shaped clamping seat 62 is always connected to the housing structure 1 through the telescopic rod member 63, which can reduce the possibility of accidental loss of the arc-shaped clamping seat 62.

[0040] Referring to Figure 6 , an interlocking mechanism 7 is provided between the operating rotating shaft 51 and the open-circuit operating mechanism. The interlocking mechanism 7 includes a first interlocking member 8 and a second interlocking member 9. Among them, the first interlocking member 8 is arranged outside the housing structure 1 and is slidably connected to the side surface of the housing structure 1; the second interlocking member 9 is fixedly sleeved on the operating rotating shaft 51. Through the mutual cooperation and locking between the first interlocking member 8 and the second interlocking member 9, the vacuum arc extinguishing device and the disconnecting switch 4 can be made to act in a specific order to ensure electrical safety.

[0041] In this embodiment, the first interlocking member 8 is connected to the open-circuit operating mechanism through a connecting rod member. When the open-circuit operating mechanism controls the vacuum arc extinguishing device to be in a connected state, the first interlocking member 8 moves to the highest position; when the open-circuit operating mechanism controls the vacuum arc extinguishing device to be in a disconnected state, the first interlocking member 8 can move to the lowest position. A vertically arranged limiting groove 811 is formed at the top of the limiting clamping seat 81 integrally formed on the top of the first interlocking member 8.

[0042] The second interlocking member 9 includes a second swing arm 91 and a third swing arm 92 fixedly sleeved on the operating rotating shaft 51. In this embodiment, the second swing arm 91 and the third swing arm 92 are connected to each other and integrally formed; among them, a limiting post 911 is inserted at one end of the second swing arm 91 far from the operating rotating shaft 51. When the vacuum arc extinguishing device is switched from the disconnected state to the connected state, the open-circuit operating mechanism drives the first interlocking member 8 to move upward, enabling the limiting post 911 to be matched and inserted into the limiting groove 811. At this time, the rotation of the second swing arm 91 is restricted, so that the disconnecting switch 4 cannot act when the vacuum arc extinguishing device is turned on, reducing the occurrence of accidental opening of the disconnecting switch 4.

[0043] It should be noted that when the vacuum arc extinguishing device is in the disconnected state, the open-circuit operating mechanism can drive the first interlocking member 8 and the limiting clamping seat 81 to move out of the moving path of the limiting post 911, so as to facilitate the normal opening and closing operations of the disconnecting switch 4.

[0044] In addition, returning to Figure 4 , a notch 5411 is partially provided on the first rotating shaft 541. When the disconnecting switch 4 is in the closed state, the inner side surface of the notch 5411 is vertically arranged; at the same time, referring to Figure 7, a locking part 82 is integrally formed on the top of the first interlocking part 8. The locking part 82 is vertically arranged. When the vacuum arc extinguishing device is switched from the off state to the connected state, the first interlocking part 8 and the locking part 82 can move upward and be inserted into the notch 5411 and abut against the inner side surface of the notch 5411, which also plays a role in restricting the rotation of the second swing arm 91 and reducing the occurrence of accidental opening of the disconnector 4. By setting two restrictions on the disconnector 4, it is beneficial to keep the interlocking mechanism 7 in good mechanical life.

[0045] The third swing arm 92 is provided with a hooking groove 921 penetrating through both side surfaces. One end of the hooking groove 921 is communicated with the outer peripheral surface of the third swing arm 92; in this embodiment, the hooking groove 921 is arc-shaped, and the arc axis of the hooking groove 921 coincides with the rotation axis of the third swing arm 92; a sliding sleeve 83 is fixedly arranged on the first interlocking part 8, and a hooking column 84 is slidably inserted inside the sliding sleeve 83. The hooking column 84 is used for cooperating with the hooking groove 921 of the third swing arm 92 to hook; when the disconnector 4 is switched from the closed state to the open state, the third swing arm 92 can rotate in a direction gradually approaching the hooking column 84, and finally the hooking column 84 can be matched and clamped in the hooking groove 921 to limit the movement of the first interlocking part 8, so that the vacuum arc extinguishing device cannot act when the disconnector 4 is opened, reducing the occurrence of accidental connection of the vacuum arc extinguishing device.

[0046] Refer to Figure 8 , in this embodiment, the inner diameter of the port of the sliding sleeve 83 is set to be equal to the outer diameter of the hooking column 84. An anti-detachment part 841 is integrally formed at one end of the hooking column 84 located inside the sliding sleeve 83. The outer diameter of the anti-detachment part 841 is larger than the outer diameter of the hooking column 84, and the outer diameter of the anti-detachment part 841 is set to be equal to the inner diameter of the sliding sleeve 83. A return spring 85 is arranged inside the sliding sleeve 83. The return spring 85 is sleeved on the hooking column 84. One end of the return spring 85 abuts against the anti-detachment part 841, and the other end abuts against the inner end wall of the sliding sleeve 83; the return spring 85 can always generate an elastic force acting on the anti-detachment part 841, thereby forcing the hooking column 84 to retract into the sliding sleeve 83 inside normally.

[0047] Inside the sliding sleeve 83, a pushing rod 86 is further arranged. The pushing rod 86 is slidably installed inside the sliding sleeve 83, and one end of the pushing rod 86 away from the hanging column 84 is always exposed outside the sliding sleeve 83. A locking structure is provided between the pushing rod 86 and the sliding sleeve 83. The locking structure includes a flat block 861 integrally formed on the outer peripheral side of the pushing rod 86 and a flat slot 831 provided on the inner peripheral wall of the sliding sleeve 83. By forcing the pushing rod 86 to move inside the sliding sleeve 83 and making the flat block 861 and the flat slot 831 form an angular dislocation, when the pushing rod 86 can be locked with the sliding sleeve 83 through the locking structure, the pushing rod 86 can abut against the anti-disengagement part 841 and force the anti-disengagement part 841 to compress the return spring 85. At this time, the hanging column 84 can be kept exposed outside the sliding sleeve 83 for the third swing arm 92 to cooperate with for hooking and positioning.

[0048] The implementation principle of an intelligent control outdoor vacuum circuit breaker applicable to 10 kV high voltage in the embodiment of the present application is as follows: First, by arranging the first interlock 8 and the second interlock 9 on the outside of the housing structure 1 together, when the outdoor circuit breaker is in normal use, the positions and states of the first interlock 8 and the second interlock 9 can be clearly seen through methods such as camera shooting or drone shooting. Furthermore, the use state of the interlock mechanism 7 can be judged by visual inspection to determine whether it can function normally.

[0049] Second, when it is found that the interlock mechanism 7 is damaged or the outdoor circuit breaker fails, by removing the fastener 31 between the front end plate frame 3 and the housing structure 1, and then manipulating the pushing rod 86 to make the flat block 861 of the pushing rod 86 align with the flat slot 831 of the sliding sleeve 83, the hooking and positioning between the third swing arm 92 and the hanging column 84 can be quickly released. At this time, directly forcing the front end plate frame 3 and the housing structure 1 to separate can quickly separate the first rotating shaft 541 from the shaft seat mechanism 6. At this time, the first interlock 8 connected to the circuit breaking operating mechanism can be separated from the second interlock 9 connected to the operating rotating shaft 51, which is convenient for maintenance personnel to perform corresponding inspection and replacement on the damaged parts, can shorten the overall maintenance cycle, and is beneficial to quickly restoring power supply.

[0050] The above is the preferred embodiment of the present application. It does not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An intelligent controlled outdoor vacuum circuit breaker suitable for 10kV high voltage, comprising a circuit breaker assembly and an isolation assembly, characterized in that: The circuit breaker assembly comprises a housing structure (1) and a sealed pole (2) fixed to the housing structure (1); a vacuum arc extinguishing device is provided inside the sealed pole (2); and a circuit breaker operating mechanism for controlling the opening and closing of the vacuum arc extinguishing device is provided inside the housing structure (1); the isolation assembly comprises a front end plate frame (3) fixed to the housing structure (1) and an isolating switch (4) fixed to the front end plate frame (3); an isolation operating mechanism for controlling the opening and closing of the isolating switch (4) is provided inside the front end plate frame (3). (5); wherein the isolation operating mechanism (5) comprises an operating shaft (51), a first swing arm (52) fixedly sleeved on the operating shaft (51), and a spring telescopic arm (53) hinged to the first swing arm (52); a first rotating shaft (541) is provided at one end of the spring telescopic arm (53) away from the first swing arm (52); the housing structure (1) is provided with a shaft seat mechanism (6); the first rotating shaft (541) and the shaft seat mechanism (6) are connected to each other in a movable clamping manner and can rotate; An interlocking mechanism (7) is provided between the operating shaft (51) and the circuit breaker operating mechanism, the interlocking mechanism (7) comprising a first interlocking member (8) connected to the circuit breaker operating mechanism and a second interlocking member (9) fixedly sleeved on the operating shaft (51), the first interlocking member (8) being located outside the housing structure (1); the first interlocking member (8) and the second interlocking member (9) are mutually locked in cooperation to achieve sequential operation of the vacuum arc extinguishing device and the disconnector (4).

2. The intelligent controlled outdoor vacuum circuit breaker according to claim 1 is characterized in that: The spring telescopic arm (53) comprises a first arm (54) and a second arm (55) which are movably connected to each other, and a compression spring (56) arranged between the first arm (54) and the second arm (55); a second hinge (551) is arranged at the end of the second arm (55); and the second arm (55) is rotatably connected to the first swing arm (52) via the second hinge (551); A first hinge (542) is provided at the end of the first arm (54); two limiting portions (543) are formed on the outer side surface of the first hinge (542) by cutting; the two limiting portions (543) are symmetrically arranged; in an assembled state, the side surfaces of the two limiting portions (543) respectively abut against the shaft seat mechanism (6); two first rotating shafts (541) are provided, and the two first rotating shafts (541) are respectively fixed to the two limiting portions (543).

3. The intelligent controlled outdoor vacuum circuit breaker according to claim 2 is characterized in that: The shaft seat mechanism (6) comprises a fixed base (61) and two arc-shaped clamping seats (62); the fixed base (61) is fixed to the outer surface of the shell structure (1); the fixed base (61) is provided with two supporting parts (611) protruding from the side of the shell structure (1); the surface of the supporting part (611) is provided with an arc-shaped groove (612) matching and fitting with the first rotating shaft (541); The two arc-shaped clamping seats (62) are respectively clamped to the two supporting parts (611) through the limiting structure. The side of the arc-shaped clamping seat (62) is provided with an inner arc groove (621). In the assembled state, the supporting part (611) enters the inner arc groove (621). The inner arc groove (621) and the arc-shaped groove (612) are enclosed together to form a clamping space for the first rotating shaft (541) to rotate.

4. The intelligent controlled outdoor vacuum circuit breaker according to claim 3 is characterized in that: The limiting structure comprises a pin (613) arranged on the fixed base (61), a pin hole (622) opened in the arc-shaped clamping seat (62), and a stopper (544) arranged on the limiting portion (543); in an assembled state, the pin (613) is matched and inserted into the pin hole (622), and the stopper (544) is matched and pressed against the arc-shaped clamping seat (62), and forces the arc-shaped clamping seat (62) to press against the fixed base (61).

5. The intelligent controlled outdoor vacuum circuit breaker according to claim 4 is characterized in that: The first rotating shaft (541) is partially provided with a notch (5411), and when the disconnector (4) is in a closed state, the inner side surface of the notch (5411) is arranged vertically; the first interlocking member (8) is partially provided with a locking portion (82), and when the vacuum arc extinguishing device is switched from a disconnected state to a connected state, the locking portion (82) moves upwards to be inserted into the notch (5411) and abuts against the inner side surface of the notch (5411).

6. The intelligent controlled outdoor vacuum circuit breaker according to claim 3 is characterized in that: A telescopic rod (63) is provided between the arc-shaped clamping seat (62) and the shell structure (1); one end of the telescopic rod (63) is hinged to the arc-shaped clamping seat (62), and the other end is hinged to the shell structure (1).

7. The intelligent controlled outdoor vacuum circuit breaker according to claim 1 is characterized in that: The first interlocking member (8) is vertically slidably mounted on the outer surface of the housing structure (1); when the vacuum arc extinguishing device is in a connected state, the first interlocking member (8) is located at the highest position, and when the vacuum arc extinguishing device is in a disconnected state, the first interlocking member (8) is located at the lowest position; a limiting clamping seat (81) is partially provided on the first interlocking member (8), and a limiting groove (811) is provided on the top of the limiting clamping seat (81); The second interlocking member (9) comprises a second swing arm (91) fixedly sleeved on the operating shaft (51); a limiting column (911) is inserted into one end of the second swing arm (91) away from the operating shaft (51); when the vacuum arc extinguishing device switches from a disconnected state to a connected state, the first interlocking member (8) moves upward to force the limiting column (911) to match and enter the limiting groove (811); when the vacuum arc extinguishing device is in the disconnected state, the limiting clamping seat (81) is located outside the moving path of the limiting column (911).

8. The intelligent controlled outdoor vacuum circuit breaker according to claim 7 is characterized in that: The second interlocking member (9) further comprises a third swing arm (92) fixedly sleeved on the operating shaft (51); the third swing arm (92) is partially provided with an arc-shaped hooking groove (921); the arc axis of the hooking groove (921) coincides with the rotation axis of the third swing arm (92); the first interlocking member (8) is provided with a hooking column (84); when the disconnector (4) is switched from a closed state to an open state, the third swing arm (92) gradually approaches the hooking column (84) and enables the hooking column (84) to be matched and locked in the hooking groove (921).

9. The intelligent controlled outdoor vacuum circuit breaker according to claim 8, characterized in that: The first interlocking member (8) is fixed with a sliding sleeve (83), the hook column (84) is slidably inserted in the sliding sleeve (83), and an anti-slip portion (841) for limiting the hook column (84) from escaping from the sliding sleeve (83) is provided at the end of the hook column (84), and a return spring (85) is provided between the anti-slip portion (841) and the sliding sleeve (83); A push rod (86) is slidably installed inside the sliding sleeve (83), and the return spring (85) is used to force the anti-slip portion (841) to normally abut against the push rod (86); a locking structure is provided between the push rod (86) and the sliding sleeve (83), and when the push rod (86) is locked with the sliding sleeve (83) by the locking structure, the hook column (84) remains exposed outside the sliding sleeve (83) to be hooked and positioned by the third swing arm (92).

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