Intelligent control circuit breaker with protective disconnecting switch

Abstract

The invention relates to the technical field of circuit breakers, and provides an intelligent control circuit breaker with a protection type isolation switch, which comprises a circuit breaker body, a line side isolation switch, a power supply side isolation switch, an arc extinguishing detector, a safety box and a control terminal, the safety box is made of an insulating material; the circuit breaker body, the line side isolating switch and the power supply side isolating switch are respectively provided with a first disconnecting link, a second disconnecting link and a third disconnecting link; a first air cylinder, a second air cylinder and a third air cylinder are hinged in the safety box, the first air cylinder, the second air cylinder and the third air cylinder are used for driving the first disconnecting link, the second disconnecting link and the third disconnecting link to rotate respectively, and the first air cylinder, the second air cylinder and the third air cylinder are electrically connected to the control terminal; the arc extinguishing detector is electrically connected to the control terminal; and the control terminal is arranged outside the safety box and adopts an independent power supply and an independent circuit. The circuit breaker and the isolating switch have the effect of reducing the possibility of accidents in the operation process of the circuit breaker and the isolating switch.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and in particular, to an intelligent control circuit breaker with a protective disconnecting switch. Background Art

[0002] A disconnecting switch, also known as a knife switch, mainly functions to disconnect and connect the current in a circuit based on a mechanical connection method, and is usually used in conjunction with a circuit breaker.

[0003] A circuit breaker, also known as an automatic switch, is an electrical appliance that has the function of a manual switch and can automatically perform undervoltage, overvoltage, overload, and short-circuit protection. A circuit breaker can be used to distribute electric energy, start asynchronous motors infrequently, and protect power supply lines and motors, etc.

[0004] When the disconnecting switch is used in conjunction with the circuit breaker, if an overload, short circuit, or undervoltage fault occurs in the circuit, the circuit breaker trips, automatically cuts off the circuit, and completes arc extinguishing. When maintenance personnel perform repairs, they first ensure that the circuit breaker is in the off state; then they open the disconnecting switch on the load side (i.e., the line side) to narrow the scope of the accident in case of misoperation and avoid affecting the busbar; finally, they open the disconnecting switch on the power supply side (i.e., the busbar side) to complete the entire power outage operation process. When power is restored, the above operations are carried out in reverse.

[0005] In the above process, to ensure operation safety, the disconnecting switch should be opened only when the circuit breaker is completely off and arc extinguishing is completed. Whether the circuit breaker is completely off and whether arc extinguishing is completed need to be judged by the maintenance personnel based on experience, and the operation sequence must not be reversed during the operation. Therefore, there is a possibility of accidents when the maintenance personnel have insufficient experience or are negligent. Summary of the Invention

[0006] In order to reduce the possibility of accidents during the operation of the circuit breaker and the disconnecting switch, this application provides an intelligent control circuit breaker with a protective disconnecting switch.

[0007] An intelligent control circuit breaker with a protective disconnecting switch provided by this application adopts the following technical solutions: An intelligent control circuit breaker with a protective disconnecting switch, comprising a circuit breaker body, a line-side disconnecting switch, a power-side disconnecting switch, an arc extinguishing detector, a safety box and a control terminal; the safety box has a mounting wall, and the line-side disconnecting switch, the power-side disconnecting switch, the circuit breaker body and the arc extinguishing detector are all mounted on the mounting wall, and the safety box is made of insulating material; the circuit breaker body has a first knife switch, the line-side disconnecting switch has a second knife switch, and the power-side disconnecting switch has a third knife switch; a first cylinder, a second cylinder and a third cylinder are hinged in the safety box, a movable sleeve is sleeved on the output end of the first cylinder in a sliding manner, a suction cup is arranged at the end of the output end of the first cylinder, and an adsorption surface for the suction cup to adsorb is provided in the movable sleeve, and the end of the movable sleeve away from the first cylinder is hinged to the first knife switch; the output end of the second cylinder is hinged to the second knife switch, and the output end of the third cylinder is hinged to the third knife switch, and the first cylinder, the second cylinder and the third cylinder are all electrically connected to the control terminal; the arc extinguishing detector is electrically connected to the control terminal and sends the detected arc extinguishing signal to the control terminal; the control terminal is arranged outside the safety box, and the control terminal uses an independent power supply and an independent circuit.

[0008] By adopting the above technical solution, when an overload, short circuit or undervoltage fault occurs in the circuit, the circuit breaker body trips, the first knife switch rotates, and at the same time drives the movable sleeve to move away from the first cylinder; the arc extinguishing detector detects the arc extinguishing signal and sends the arc extinguishing signal to the control terminal, and the control terminal starts the second cylinder after determining complete arc extinguishing, and uses the second cylinder to drive the second knife switch to rotate, thereby disconnecting the line-side disconnecting switch; after the line-side disconnecting switch is completely disconnected, the control terminal starts the third cylinder, and uses the third cylinder to drive the third knife switch to rotate to disconnect the power-side disconnecting switch.

[0009] After the circuit maintenance is completed, the control terminal starts the third cylinder again, and uses the third cylinder to drive the third knife switch to close; then starts the second cylinder to drive the second knife switch to close; finally starts the first cylinder, first makes the suction cup at the end of the first cylinder move towards the adsorption surface, and after reaching the adsorption surface, uses the suction cup to adsorb on the adsorption surface, and then controls the output end of the first cylinder to move in the reverse direction to drive the first knife switch to close.

[0010] During the above operation process, there is no need for staff to participate in the operation of the line-side disconnecting switch and the power-side disconnecting switch throughout the process, and even there is no need to open the safety box with insulating settings, and the line-side disconnecting switch and the power-side disconnecting switch are disconnected in sequence by the first cylinder and the second cylinder only after the control terminal judges that the arc extinguishing is completed. On the one hand, it protects the staff, and on the other hand, it reduces the possibility of misoperation, thereby reducing the possibility of accidents.

[0011] Optionally, a first signal acquisition module, a second signal acquisition module, and a third signal acquisition module are provided in the safety box; when the first knife switch is fully opened, it abuts against the first signal acquisition module; when the second knife switch is fully opened, it abuts against the second signal acquisition module; when the third knife switch is opened, it abuts against the third signal acquisition module; the first signal acquisition module, the second signal acquisition module, and the third signal acquisition module are all electrically connected to the control terminal and send pressure signals to the control terminal.

[0012] By adopting the above technical solution, after a circuit failure, the control terminal determines whether the first knife switch abuts against the first signal acquisition module according to the pressure signal sent by the first signal acquisition module, and further determines whether the first knife switch is fully opened; if the first knife switch is not fully opened, the first cylinder is started, so that the output end of the first cylinder moves in the direction close to the adsorption surface and finally abuts against the adsorption surface, pushing the movable sleeve and the first knife switch to move in the direction close to the first signal acquisition module until the first knife switch abuts against the first signal acquisition module, so that the first knife switch is fully opened. Whether the line-side disconnecting switch is fully opened is judged through the pressure signal sent by the second signal acquisition module. If it is not fully opened, the second cylinder is started through the control terminal, and the second knife switch is pushed by the second cylinder to rotate until it is fully opened; whether the power-side disconnecting switch is fully opened is judged through the pressure signal sent by the third signal acquisition module. If it is not fully opened, the third cylinder is started through the control terminal, and the third knife switch is pushed by the third cylinder to be fully opened, thereby further improving safety.

[0013] Optionally, the safety box includes a box body and a box door, and the box door is provided with an intelligent lock; the intelligent lock is electrically connected to the control terminal, the control terminal has an identity recognition module, and the control terminal controls the opening and closing of the intelligent lock according to the identity recognition module.

[0014] By adopting the above technical solution, by setting the intelligent lock, it is avoided that ordinary people accidentally open the safety box and accidents occur. The identity information of the staff can be input into the identity recognition module. When a failure occurs inside the safety box or maintenance is required, the authorized staff can open the box door after completing identity recognition at the control terminal, further ensuring safety.

[0015] Optionally, the intelligent lock is a password lock, and the corresponding password input module of the intelligent lock is arranged on the control terminal.

[0016] By adopting the above technical solution, in an emergency situation and when there is no authorized staff on site, the password can also be informed to relevant personnel, and the relevant personnel can open the intelligent lock by inputting the password, improving the flexibility of use of the intelligent circuit breaker.

[0017] Optionally, the circuit breaker body, the line-side disconnect switch, and the power-source-side disconnect switch are arranged at intervals in sequence along the horizontal direction; a first limiting mechanism is provided between the circuit breaker body and the line-side disconnect switch, and both the first knife switch and the second knife switch are movably connected to the first limiting mechanism, such that the second knife switch cannot rotate before the first knife switch rotates to full opening, and the first knife switch cannot rotate before the second knife switch rotates to full closing.

[0018] By adopting the above technical solution, on the basis of being controlled by the control terminal, the first cylinder, and the second cylinder, by adding a first limiting mechanism, in a pure mechanical manner, the rotation of the second knife switch is restricted before the first knife switch rotates to full disconnection, and the rotation of the first knife switch is restricted before the second knife switch rotates to full disconnection and then fully closes again, reducing the possibility of the disconnection and closing sequence between the first knife switch and the second knife switch being reversed due to a fault in the circuit where the control terminal is located, and further improving safety.

[0019] Optionally, the circuit breaker body has a first box body, a first connecting rod is fixedly connected to the first knife switch, the first connecting rod is parallel to the first knife switch and rotates synchronously with the first knife switch; the line-side disconnect switch has a second box body, a second connecting rod is fixedly connected to the side of the second knife switch close to the first box body, the second connecting rod is parallel to the second knife switch and rotates synchronously with the second knife switch; the first limiting mechanism includes a first limiting plate, a circuit breaker linkage block, and a first line-side linkage block, the circuit breaker linkage block is arranged at the end of the first connecting rod far from the first knife switch, and the first line-side linkage block is arranged at the end of the second connecting rod far from the second knife switch; the first limiting plate is horizontally slidably connected to the installation wall, a circuit breaker linkage groove is provided on the surface of the first limiting plate close to the first box body, and the circuit breaker linkage groove is used for the circuit breaker linkage block to slide; the circuit breaker linkage groove includes a first limiting groove and a first sliding groove, the first limiting groove is horizontally arranged on the upper side of the first limiting plate, the first sliding groove is vertically arranged and the upper end communicates with one end of the first limiting groove close to the installation wall; when the first knife switch is closed, the circuit breaker linkage block is located at the end of the first sliding groove far from the first limiting groove; a first line-side linkage groove is provided on the surface of the first limiting plate close to the second box body, and the first line-side linkage groove is used for the first line-side linkage block to slide; the first line-side linkage groove includes a second limiting groove and a second sliding groove, the second limiting groove is horizontally arranged on the lower side of the first limiting plate, the second sliding groove is vertically arranged and the lower end communicates with one end of the second limiting groove far from the installation wall; when the second knife switch is closed, the first line-side linkage block is located at the end of the second limiting groove far from the second sliding groove.

[0020] By adopting the above technical solution, when the first disconnecting switch is fully closed and the first disconnecting switch rotates, it will drive the first connecting rod to rotate together, and then drive the circuit breaker linkage block to slide upward in the first sliding groove. While sliding, it pushes the first limiting plate to move towards the installation wall; when the circuit breaker linkage block slides in the first sliding groove, due to the movement of the first limiting plate, the first line-side linkage block moves horizontally in the second limiting groove. Since the second limiting groove is horizontally arranged, the second connecting rod cannot rotate under the restriction of the second limiting groove, and thus the second disconnecting switch cannot rotate. After the circuit breaker linkage block slides into the first limiting groove, the first line-side linkage block slides into the second sliding groove, and at this time the second disconnecting switch can rotate. When the second disconnecting switch rotates, the second connecting rod rotates synchronously, and the first line-side linkage block slides in the second sliding groove, while driving the first limiting plate to continue to move towards the installation wall. The circuit breaker linkage block moves in the first limiting groove, and at this time the first connecting rod cannot rotate, and thus the first disconnecting switch cannot rotate. Through the cooperation of the above structure, the second disconnecting switch cannot rotate before the first disconnecting switch is fully disconnected, thereby ensuring that the circuit has been completely cut off before the line-side disconnecting switch is disconnected, avoiding the possibility of accidentally disconnecting the line-side disconnecting switch before the circuit is completely cut off, and further reducing the risk of safety accidents.

[0021] Optionally, a second limiting mechanism is provided between the line-side disconnecting switch and the power-source-side disconnecting switch. The second disconnecting switch and the third disconnecting switch are both movably connected to the second limiting mechanism, so that the third disconnecting switch cannot rotate before the second disconnecting switch rotates to be fully disconnected, and the second disconnecting switch cannot rotate before the third disconnecting switch rotates to be fully closed.

[0022] By adopting the above technical solution, when disconnecting the protective disconnecting switch, the line-side disconnecting switch should be disconnected first, and then the power-source-side disconnecting switch. By adding a second limiting mechanism, the third disconnecting switch of the power-source-side disconnecting switch cannot move when the line-side disconnecting switch is not fully disconnected, thereby reducing the possibility of reversing the closing sequence and further reducing the risk of safety accidents.

[0023] Optionally, a third connecting rod is fixedly connected to the side of the second disconnecting switch away from the second box body. The third connecting rod is parallel to the second disconnecting switch and rotates synchronously with the second disconnecting switch. The line-side disconnector has a third box body. A fourth connecting rod is fixedly connected to the side of the third disconnecting switch close to the second box body. The fourth connecting rod is parallel to the third disconnecting switch and rotates synchronously with the third disconnecting switch. The second limiting mechanism includes a second limiting plate, a line-side second linkage block, and a source-side linkage block. The line-side second linkage block is arranged at the end of the third connecting rod away from the second disconnecting switch. The source-side linkage block is arranged at the end of the fourth connecting rod away from the third disconnecting switch. The second limiting plate is horizontally slidably connected to the installation wall. A line-side second linkage groove is arranged on the surface of the second limiting plate close to the second box body. The line-side second linkage groove includes a third limiting groove and a third sliding groove. The third limiting groove is horizontally arranged on the upper side of the second limiting plate. The third sliding groove is vertically arranged and its upper end communicates with one end of the third limiting groove close to the installation wall. A source-side linkage groove is arranged on the surface of the second limiting plate close to the third box body. The source-side linkage groove is used for the source-side linkage block to slide. The source-side linkage groove includes a fourth limiting groove and a fourth sliding groove. The fourth limiting groove is horizontally arranged on the lower side of the second limiting plate. The fourth sliding groove is vertically arranged and its lower end communicates with one end of the fourth limiting groove away from the installation wall.

[0024] By adopting the above technical solution, after the first disconnecting switch is completely disconnected and arc extinguishing is completed, the second air cylinder drives the second disconnecting switch to rotate. When the second disconnecting switch rotates, it drives the third connecting rod to rotate, and then drives the line-side second linkage block to move obliquely upward. During the process of the line-side second linkage block moving obliquely upward, it moves from the bottom end of the third sliding groove to the top end and enters the third limiting groove. The second limiting plate moves towards the direction close to the installation wall. At the same time, the source-side linkage block moves from one end of the fourth limiting groove close to the installation wall to the end away from the installation wall and enters the fourth sliding groove. Then, the third air cylinder is started, and the third air cylinder is used to drive the third disconnecting switch to close. When the third disconnecting switch closes, the source-side linkage block moves obliquely upward. On the one hand, it moves from the lower end of the fourth sliding groove to the upper end. On the other hand, it drives the second limiting plate to continue moving towards the direction close to the installation wall. At the same time, the line-side second linkage block also moves from one end of the third limiting groove close to the installation wall to the other end.

[0025] During the above process, before the second disconnecting switch is disconnected, the third disconnecting switch cannot rotate under the limiting effect of the fourth limiting groove. After the second disconnecting switch is completely disconnected, the source-side linkage block enters the fourth sliding groove, and the third disconnecting switch can rotate. Then, during the rotation process of the third disconnecting switch, the second disconnecting switch cannot rotate under the limiting effect of the third limiting groove.

[0026] After the overhaul of the circuit is completed, the above operations can be reversed. During the operation, before the third knife switch is fully closed, the second knife switch cannot be rotated. Thus, it is ensured that the disconnection sequence and closing sequence of the first knife switch, the second knife switch and the third knife switch will not be reversed, reducing the risk of safety accidents.

[0027] Optionally, the first connecting rod is detachably connected to the first knife switch, and the second connecting rod is detachably connected to the second knife switch.

[0028] By adopting the above technical solution, it is convenient for the installation and maintenance of the first circuit breaker body and the line-side disconnector.

[0029] Optionally, a threaded rod is fixed to the first knife switch, the threaded rod is threadedly connected with a threaded sleeve, an external thread is provided at the end of the first connecting rod close to the first knife switch, and the threaded sleeve is in threaded cooperation with the external thread.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging an arc extinguishing detector, a first cylinder, a second cylinder and a third cylinder in the safety box, after the circuit breaker body trips due to faults such as overload, short circuit and undervoltage in the circuit, the arc extinguishing detector is used to detect the arc extinguishing signal to determine whether the arc extinguishing is completed; by arranging a control terminal with an independent power supply and an independent circuit outside the safety box, the control terminal controls the movement of the first knife switch, the second knife switch and the third knife switch through the first cylinder, the second cylinder and the third cylinder respectively. Thus, during various operations on the circuit breaker, there is no need to open the safety box with insulation settings, protecting the staff on the one hand and reducing the possibility of misoperation on the other hand, and further reducing the possibility of accidents. 2. By arranging a first signal acquisition module, a second signal acquisition module and a third signal acquisition module in the safety box and electrically connecting the three sensors to the control terminal, it is judged whether the first knife switch, the second knife switch and the third knife switch are completely disconnected, further improving the safety performance and reducing the possibility of safety accidents. 3. By arranging a first limiting mechanism between the circuit breaker body and the line-side disconnector, the second knife switch cannot be rotated before the first knife switch rotates to be completely disconnected, and the first knife switch cannot be rotated before the second knife switch rotates to be completely closed; by arranging a second limiting mechanism between the line-side disconnector and the power-side disconnector, the third knife switch cannot be rotated before the second knife switch rotates to be completely disconnected, and the second knife switch cannot be rotated before the third knife switch rotates to be completely closed. The rotation sequence of the first knife switch, the second knife switch and the third knife switch is limited in a pure mechanical and physical way, further improving the safety performance and reducing the possibility of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application.

[0032] Figure 2 It is a schematic structural diagram showing the interior of the safety box in Embodiment 1.

[0033] Figure 3 It is a schematic structural diagram showing the suction cup and the movable sleeve in Embodiment 1.

[0034] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present application.

[0035] Figure 5 It is a schematic structural diagram showing the specific structures of the first limiting mechanism and the second limiting mechanism in Embodiment 2.

[0036] Figure 6 It is a schematic structural diagram showing the specific structures of the first limiting mechanism and the second limiting mechanism from another angle in Embodiment 2.

[0037] Figure 7 It is a schematic structural diagram showing the first limiting plate and the second limiting plate in Embodiment 2.

[0038] Figure 8 It is a schematic structural diagram of Embodiment 3 of the present application.

[0039] Explanation of reference numerals: 1, circuit breaker body; 11, first box body; 111, threaded rod; 112, threaded sleeve; 12, first knife switch; 13, first connecting rod; 131, external thread; 2, line-side disconnector; 21, second box body; 22, second knife switch; 23, second connecting rod; 24, third connecting rod; 3, power-side disconnector; 31, third box body; 32, third knife switch; 33, fourth connecting rod; 4, arc extinguishing detector; 5, safety box; 51, box body; 52, box door; 53, intelligent lock; 54, mounting wall; 55, first cylinder; 551, movable sleeve; 552, suction cup; 553, adsorption surface; 56, second cylinder; 57, third cylinder; 58, first signal acquisition module; 59, second signal acquisition module; 60, third signal acquisition module; 6, control terminal; 7, first limiting mechanism; 71, first limiting plate; 72, circuit breaker linkage block; 73, first line-side linkage block; 74, first mounting plate; 75, circuit breaker linkage groove; 751, first limiting groove; 752, first sliding groove; 76, first line-side linkage groove; 761, second limiting groove; 762, second sliding groove; 8, second limiting mechanism; 81, second limiting plate; 82, second line-side linkage block; 83, power-side linkage block; 84, second mounting plate; 85, second line-side linkage groove; 851, third limiting groove; 852, third sliding groove; 86, power-side linkage groove; 861, fourth limiting groove; 862, fourth sliding groove. Detailed implementation manners

[0040] The following will further elaborate on this application in conjunction with the attached drawings. Figure 1-8 Make a further detailed description of this application.

[0041] An embodiment of this application discloses an intelligent control circuit breaker with a protective disconnecting switch.

[0042] Embodiment 1 Refer to Figure 1 and Figure 2 An intelligent control circuit breaker with a protective disconnecting switch includes a circuit breaker body 1, a line-side disconnecting switch 2, a power-side disconnecting switch 3, an arc extinguishing detector 4, a safety box 5, and a control terminal 6.

[0043] Among them, the safety box 5 includes a box body 51 and a box door 52. The box door 52 is movably connected to the box body 51. The box door 52 is provided with an intelligent lock 53, and the intelligent lock 53 is electrically connected to the control terminal 6. The control terminal 6 is arranged outside the safety box 5, and the control terminal 6 uses an independent power supply and an independent circuit.

[0044] In this embodiment, the control terminal 6 has an identity recognition module, and the control terminal 6 controls the opening and closing of the intelligent lock 53 according to the signal received by the identity recognition module. The identity information of the corresponding staff can be input into the control terminal 6 in advance. If a fault occurs inside the safety box 5 or maintenance is required, the authorized staff can open the box door 52 after completing identity recognition at the control terminal 6 to ensure safety.

[0045] Among them, the recognition methods of the identity recognition module include but are not limited to fingerprint verification and face recognition.

[0046] Furthermore, in this embodiment, the intelligent lock 53 is a password lock, and the corresponding password input module of the password lock is arranged at the control terminal 6. In case of an emergency and when there is no authorized staff on site, the password can also be informed to relevant personnel, and the relevant personnel can open the intelligent lock 53 by inputting the password, improving the flexibility of using the intelligent control circuit breaker.

[0047] Refer to Figure 2 One side of the box body 51 away from the box door 52 is an installation wall 54. The circuit breaker body 1, the line-side disconnecting switch 2, the power-side disconnecting switch 3, and the arc extinguishing detector 4 are all installed on the installation wall 54. In this embodiment, both the box body 51 and the box door 52 are made of insulating materials, so as to insulate the circuit breaker body 1, the line-side disconnecting switch 2, the power-side disconnecting switch 3, and the arc extinguishing detector 4 in the safety box 5 from the outside and ensure safety.

[0048] The circuit breaker body 1 includes a first box body 11 and a first knife switch 12, and the first knife switch 12 can rotate relative to the first box body 11. The line-side disconnect switch 2 includes a second box body 21 and a second knife switch 22, and the second knife switch 22 can rotate relative to the second box body 21. The power-side disconnect switch 3 includes a third box body 31 and a third knife switch 32, and the third knife switch 32 can rotate relative to the third box body 31. The circuit breaker body 1, the line-side disconnect switch 2, and the power-side disconnect switch 3 are arranged at intervals in sequence along the horizontal direction.

[0049] Referring to Figure 2 and Figure 3 , on the upper wall of the safety box 5, a first cylinder 55, a second cylinder 56, and a third cylinder 57 are hinged. A movable sleeve 551 is sleeved on the output end of the first cylinder 55, and one end of the movable sleeve 551 away from the first cylinder 55 is hinged to the first knife switch 12. A suction cup 552 is fixed to the output end of the first cylinder 55, and an adsorption surface 553 for the suction cup 552 to adsorb is provided in the movable sleeve 551. In this embodiment, one end of the movable sleeve 551 away from the first cylinder 55 is closed, and the adsorption surface 553 is the inner end surface of the movable sleeve 551.

[0050] The output end of the second cylinder 56 is hinged to the second knife switch 22, the output end of the third cylinder 57 is hinged to the third knife switch 32, and the first cylinder 55, the second cylinder 56, and the third cylinder 57 are all electrically connected to the control terminal 6.

[0051] The arc extinguishing detector 4 is electrically connected to the control terminal 6 and sends the detected arc extinguishing signal to the control terminal 6. The control terminal 6 determines whether the arc extinguishing is complete according to the arc extinguishing signal, and further determines the start and stop timing of the first cylinder 55, the second cylinder 56, and the third cylinder 57.

[0052] Furthermore, a first signal acquisition module 58, a second signal acquisition module 59, and a third signal acquisition module 60 are provided in the safety box 5. The first signal acquisition module 58, the second signal acquisition module 59, and the third signal acquisition module 60 are all electrically connected to the control terminal 6. In this embodiment, the first signal acquisition module 58, the second signal acquisition module 59, and the third signal acquisition module 60 are all pressure sensors.

[0053] When the first knife switch 12 is completely disconnected, it abuts against the first signal acquisition module 58. The control terminal 6 determines whether the first knife switch 12 abuts against the first signal acquisition module 58 according to the pressure signal sent by the first signal acquisition module 58, so as to determine whether the first knife switch 12 is completely disconnected, and further determine whether the circuit breaker body 1 is completely disconnected. After determining that the first knife switch 12 is completely disconnected and the arc extinguishing is completed, the control terminal 6 controls the second cylinder 56 to drive the second knife switch 22 to rotate, and during the rotation of the second knife switch 22, the first signal acquisition module 58 is used to monitor at all times whether the first knife switch 12 is always in a completely disconnected state.

[0054] When the second disconnecting switch 22 is completely disconnected, it abuts against the second signal acquisition module 59. The control terminal 6 determines whether the second disconnecting switch 22 abuts against the second signal acquisition module 59 according to the pressure signal sent by the second signal acquisition module 59, so as to determine whether the second disconnecting switch 22 is completely disconnected, and further determine whether the line-side disconnecting switch 2 is completely disconnected. After determining that the second disconnecting switch 22 is completely disconnected, the control terminal 6 controls the third air cylinder 57 to drive the third disconnecting switch 32 to rotate. During the rotation of the third disconnecting switch 32, the first signal acquisition module 58 and the second signal acquisition module 59 are used to monitor at all times whether the first disconnecting switch 12 and the second disconnecting switch 22 are always in a completely disconnected state.

[0055] When the third disconnecting switch 32 is completely disconnected, it abuts against the third signal acquisition module 60. The control terminal 6 determines whether the third disconnecting switch 32 abuts against the third signal acquisition module 60 according to the signal sent by the third signal acquisition module 60, so as to determine whether the third disconnecting switch 32 is completely disconnected, and further determine whether the power-side disconnecting switch 3 is completely disconnected, and further determine whether the circuit is in a safe state.

[0056] It can be understood that three indicator lights with different colors can also be set on the control terminal 6. After the first disconnecting switch 12 is completely disconnected, the first indicator light lights up; after the second disconnecting switch 22 is completely disconnected, the second indicator light lights up; after the third disconnecting switch 32 is completely disconnected, the third indicator light lights up.

[0057] The implementation principle of Embodiment 1 is as follows: when a fault such as overload, short circuit, and undervoltage occurs in the circuit, the circuit breaker body 1 trips, and the first disconnecting switch 12 rotates, and at the same time drives the movable sleeve 551 to move away from the first air cylinder 55. When the circuit breaker body 1 trips, a large arc is generated. The arc detector 4 detects the generation and extinguishing signal of the arc and sends it to the control terminal 6. The control terminal 6 determines whether the circuit breaker body 1 trips according to the received extinguishing signal.

[0058] Under normal circumstances, after the circuit breaker body 1 trips, when the first disconnecting switch 12 is completely disconnected, it should abut against the first signal acquisition module 58. The first signal acquisition module 58 sends a pressure signal to the control terminal 6. After determining that the circuit breaker body 1 trips, the control terminal 6 determines whether the first disconnecting switch 12 is completely disconnected according to the signal sent by the first signal acquisition module 58. If the first disconnecting switch 12 is not completely disconnected, the control first air cylinder 55 pushes the first disconnecting switch 12 to be completely disconnected.

[0059] After the first disconnecting switch 12 is completely disconnected, the control terminal 6 controls the second cylinder 56 to push the second disconnecting switch 22. After the second disconnecting switch 22 is completely disconnected, it abuts against the second signal acquisition module 59. The second signal acquisition module 59 sends a pressure signal to the control terminal 6, and the control terminal 6 controls the second cylinder to stop working after receiving the signal.

[0060] After that, the control terminal 6 controls the third cylinder 57 to push the third disconnecting switch 32 to rotate. After the third disconnecting switch 32 is completely disconnected, it abuts against the third signal acquisition module 60, and the third signal acquisition module sends a pressure signal to the control terminal 6.

[0061] After the circuit maintenance is completed, the staff enters the operation interface of the control terminal 6 through the identity recognition system and inputs the information that the maintenance is completed into the control terminal 6. After receiving the information, the control terminal 6 drives the third disconnecting switch 32 and the second disconnecting switch 22 to close in sequence by controlling the third cylinder 57 and the second cylinder 56 respectively. Then, the control terminal 6 controls the first cylinder 55 to drive the suction cup 552 to adsorb on the adsorption surface 553, and then drives the first disconnecting switch 12 to close.

[0062] In the above operations, all opening and closing actions can be completed through the control terminal 6, and the possibility of reversing the action sequence is relatively low, thereby reducing the possibility of safety accidents.

[0063] Embodiment 2 Refer to Figure 4 , the difference between this embodiment and Embodiment 1 is that the circuit breaker body 1, the line-side disconnecting switch 2, and the power-source-side disconnecting switch 3 are arranged at intervals in sequence along the horizontal direction, that is, the line-side disconnecting switch 2 is located between the circuit breaker body 1 and the power-source-side disconnecting switch 3.

[0064] A first limiting mechanism 7 is arranged between the circuit breaker body 1 and the line-side disconnecting switch 2. The first disconnecting switch 12 and the second disconnecting switch 22 are both movably connected to the first limiting mechanism 7. The second disconnecting switch 22 cannot rotate before the first disconnecting switch 12 rotates to be completely disconnected, and the first disconnecting switch 12 cannot rotate during the process that the second disconnecting switch 22 first rotates to be completely disconnected and then rotates to be completely closed.

[0065] Refer to Figures 4 to 7 , specifically, the first disconnecting switch 12 is fixedly connected with a first connecting rod 13. The first connecting rod 13 is parallel to the first disconnecting switch 12 and rotates synchronously with the first disconnecting switch 12. On the side of the second disconnecting switch 22 close to the first box body 11, a second connecting rod 23 is fixedly connected. The second connecting rod 23 is parallel to the second disconnecting switch 22 and rotates synchronously with the second disconnecting switch 22.

[0066] The first limiting mechanism 7 includes a first limiting plate 71, a circuit breaker linkage block 72, and a first line-side linkage block 73. The circuit breaker linkage block 72 is disposed at the end of the first connecting rod 13 away from the first disconnecting switch 12, and the first line-side linkage block 73 is disposed at the end of the second connecting rod 23 away from the second disconnecting switch 22. A first mounting plate 74 is horizontally provided on the mounting wall 54, and the first limiting plate 71 is horizontally slidably connected to the first mounting plate 74 to achieve horizontal sliding connection to the mounting wall 54, and the first limiting plate 71 moves in a direction close to or away from the mounting wall 54.

[0067] On the side of the first limiting plate 71 close to the first box body 11, a circuit breaker linkage groove 75 is provided, and the circuit breaker linkage groove 75 is used for the circuit breaker linkage block 72 to slide. The circuit breaker linkage groove 75 includes a first limiting groove 751 and a first sliding groove 752. The first limiting groove 751 is horizontally provided on the upper side of the first limiting plate 71, and the first sliding groove 752 is vertically provided and the upper end communicates with one end of the first limiting groove 751 close to the mounting wall 54. When the first disconnecting switch 12 is closed, the circuit breaker linkage block 72 is located at the end of the first sliding groove 752 away from the first limiting groove 751, that is, at the lower end of the first sliding groove 752. When the first disconnecting switch 12 is completely disconnected, the circuit breaker linkage block 72 is located at one end of the first limiting groove 751 close to the mounting wall 54.

[0068] On the side of the first limiting plate 71 close to the second box body 21, a first line-side linkage groove 76 is provided. The first line-side linkage groove 76 includes a second limiting groove 761 and a second sliding groove 762. The second limiting groove 761 is horizontally provided on the lower side of the first limiting plate 71, and the second sliding groove 762 is vertically provided and the lower end communicates with one end of the second limiting groove 761 away from the mounting wall 54. When the second disconnecting switch 22 is closed, the first line-side linkage block 73 is located at the end of the second limiting groove 761 away from the second sliding groove 762, that is, at the end of the second limiting groove 761 close to the mounting wall 54. When the second disconnecting switch 22 is completely disconnected, the first line-side linkage block 73 is located at one end of the second limiting groove 761 away from the mounting wall 54.

[0069] The cooperation principle among the circuit breaker body 1, the line-side disconnector 2, and the first limiting mechanism 7 is as follows: In the case where the first disconnecting switch 12 and the second disconnecting switch 22 are completely closed, when the first disconnecting switch 12 rotates, it will drive the first connecting rod 13 to rotate together, and then drive the circuit breaker linkage block 72 to slide upward in the first sliding groove 752. While sliding, it pushes the first limiting plate 71 to move in a direction close to the mounting wall 54; while the circuit breaker linkage block 72 slides in the first sliding groove 752, due to the movement of the first limiting plate 71, the first line-side linkage block 73 horizontally moves in the second limiting groove 761. Since the second limiting groove 761 is horizontally provided, the second connecting rod 23 cannot rotate under the restriction of the second limiting groove 761, and thus the second disconnecting switch 22 cannot rotate.

[0070] After the circuit breaker linkage block 72 slides into the first limit groove 751, the first line-side linkage block 73 slides into the second sliding groove 762. Only then can the second knife switch 22 rotate. When the second knife switch 22 rotates, the second connecting rod 23 rotates synchronously. The first line-side linkage block 73 slides in the second sliding groove 762, and at the same time drives the first limit plate 71 to continue moving towards the mounting wall 54. The circuit breaker linkage block 72 moves in the first limit groove 751. At this time, the first connecting rod 13 cannot rotate, and thus the first knife switch 12 cannot rotate.

[0071] Through the cooperation of the above structure, the second knife switch 22 cannot rotate before the first knife switch 12 is completely disconnected, thus ensuring that the circuit has been completely cut off before disconnecting the line-side disconnecting switch 2, avoiding the possibility of accidentally disconnecting the line-side disconnecting switch 2 before the circuit is completely cut off, and further reducing the risk of safety accidents. At the same time, it also makes the first knife switch 12 cannot rotate before the second knife switch 22 is completely closed, avoiding reversing the power transmission sequence.

[0072] Furthermore, it can be understood that a second limit mechanism 8 is provided between the line-side disconnecting switch 2 and the power-side disconnecting switch 3. Both the second knife switch 22 and the third knife switch 32 are movably connected to the second limit mechanism 8. The third knife switch 32 cannot rotate before the second knife switch 22 rotates to be completely disconnected, and the second knife switch 22 cannot rotate before the third knife switch 32 rotates to be completely closed.

[0073] Specifically, a third connecting rod 24 is fixedly connected to the side of the second knife switch 22 away from the second box body 21. The third connecting rod 24 is parallel to the second knife switch 22 and rotates synchronously with the second knife switch 22. A fourth connecting rod 33 is fixedly connected to the side of the third knife switch 32 close to the second box body 21. The fourth connecting rod 33 is parallel to the third knife switch 32 and rotates synchronously with the third knife switch 32.

[0074] The second limit mechanism 8 includes a second limit plate 81, a second line-side linkage block 82, and a power-side linkage block 83. The second line-side linkage block 82 is arranged at the end of the third connecting rod 24 away from the second knife switch 22, and the power-side linkage block 83 is arranged at the end of the fourth connecting rod 33 away from the third knife switch 32.

[0075] The mounting wall 54 is fixedly connected with a second mounting plate 84. The second limiting plate 81 is horizontally slidably connected to the second mounting plate 84 so as to be horizontally slidably connected to the mounting wall 54, and the second limiting plate 81 moves in a direction closer to or farther from the mounting wall 54. A second circuit linkage groove is provided on the surface of the second limiting plate 81 close to the second box body 21. The second circuit linkage groove includes a third limiting groove 851 and a third sliding groove 852. The third limiting groove 851 is horizontally arranged on the upper side of the second limiting plate 81, and the third sliding groove 852 is vertically arranged and the upper end thereof communicates with one end of the third limiting groove 851 close to the mounting wall 54. When the second knife switch 22 is fully closed, the second circuit side linkage block 82 is located at the lower end of the third sliding groove 852; when the second knife switch 22 is fully opened, the second circuit side linkage block 82 is located at the upper end of the third sliding groove 852 and is simultaneously located at one end of the third limiting groove 851 close to the mounting wall 54.

[0076] A power supply side linkage groove 86 is provided on the surface of the second limiting plate 81 close to the third box body 31. The power supply side linkage groove 86 is used for the power supply side linkage block 83 to slide. The power supply side linkage groove 86 includes a fourth limiting groove 861 and a fourth sliding groove 862. The fourth limiting groove 861 is horizontally arranged on the lower side of the second limiting plate 81, and the fourth sliding groove 862 is vertically arranged and the lower end thereof communicates with one end of the fourth limiting groove 861 far from the mounting wall 54. When the third knife switch 32 is closed, the power supply side linkage block 83 is located at one end of the fourth limiting groove 861 close to the mounting wall 54; when the third knife switch 32 is fully opened, the power supply side linkage block 83 is located at one end of the fourth limiting groove 861 far from the mounting wall 54 and is simultaneously located at the lower end of the fourth sliding groove 862.

[0077] When the second knife switch 22 is rotated, the second circuit side linkage block 82 slides from the lower end to the upper end in the third sliding groove 852, and at the same time, the second limiting plate 81 is pushed to slide in a direction closer to the mounting wall 54; when the second knife switch 22 is fully opened, the second circuit side linkage block 82 slides to the upper end of the third sliding groove 852 and enters the third limiting groove 851, and the power supply side linkage block 83 slides from one end of the fourth limiting groove 861 close to the mounting wall 54 to the other end and enters the fourth sliding groove 862. During the above process, the third knife switch 32 cannot be rotated under the limitation of the fourth limiting groove 861.

[0078] Only after the second knife switch 22 is fully opened can the third knife switch 32 be rotated. Similarly, during the rotation of the third knife switch 32, the second knife switch 22 cannot be rotated under the limitation of the third limiting groove 851, so as to ensure that the opening sequence and closing sequence of the first knife switch 12, the second knife switch 22 and the third knife switch 32 cannot be reversed at the pure mechanical and physical level, and the use safety of the intelligent control circuit breaker is improved.

[0079] The implementation principle of Embodiment 2 is as follows: During the process of the first disconnecting switch 12 rotating from the closed position to the fully open position, it drives the first connecting rod 13 to rotate. The circuit breaker linkage block 72 connected to the first connecting rod 13 gradually slides from the lower end to the upper end in the first sliding groove 752 and enters the end of the first limiting groove 751 close to the mounting wall 54; during this process, the circuit breaker linkage block 72 simultaneously pushes the first limiting plate 71 to slide in the direction close to the mounting wall 54. During the sliding process of the first limiting plate 71, the first line-side linkage block 73 moves from one end close to the mounting wall 54 to the end far from the mounting wall 54 in the second limiting groove 761 and enters the second sliding groove 762. During the above process, the second disconnecting switch 22 cannot rotate.

[0080] Similarly, it can be known that during the rotation process of the second disconnecting switch 22, the first disconnecting switch 12 and the third disconnecting switch 32 cannot rotate. After the second disconnecting switch 22 rotates to the fully open position, the third disconnecting switch 32 can rotate. Before the third disconnecting switch 32 rotates to the re-closed position, the second disconnecting switch 22 cannot rotate. Thus, it is ensured that the disconnection sequence is: the first disconnecting switch 12, the second disconnecting switch 22, the third disconnecting switch 32, and the closing sequence is: the third disconnecting switch 32, the second disconnecting switch 22, the first disconnecting switch 12, further reducing the possibility of safety accidents.

[0081] Embodiment 3 Refer to Figure 8 , the difference between this embodiment and Embodiment 2 is that the first connecting rod 13 is detachably connected to the first disconnecting switch 12, the second connecting rod 23 is detachably connected to the second disconnecting switch 22, the third connecting rod 24 is detachably connected to the second disconnecting switch 22, and the fourth connecting rod 33 is detachably connected to the third disconnecting switch 32. This is convenient for the installation and maintenance of the circuit breaker body 1, the line-side disconnector 2, and the power-side disconnector 3.

[0082] Taking the specific structure of the detachable connection between the first connecting rod 13 and the first disconnecting switch 12 as an example, the structures of the detachable connections between other connecting rods (i.e., the second connecting rod 23, the third connecting rod 24, and the fourth connecting rod 33) and other disconnecting switches (i.e., the second disconnecting switch 22 and the third disconnecting switch 32) can be obtained by the same reasoning.

[0083] The specific structure of the detachable connection between the first connecting rod 13 and the first disconnecting switch 12 is as follows: The first disconnecting switch 12 is fixedly connected with a threaded rod 111, the threaded rod 111 is threadedly connected with a threaded sleeve 112, and the end of the first connecting rod 13 close to the first box body 11 is provided with an external thread 131, and the threaded sleeve 112 is in threaded cooperation with the external thread 131. The overall structure is simple, and the disassembly and assembly are simple.

[0084] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An intelligent control circuit breaker with a protective isolating switch, characterized in that: The invention comprises a circuit breaker body (1), a line-side isolating switch (2), a power-side isolating switch (3), an arc extinguishing detector (4), a safety box (5) and a control terminal (6); the safety box (5) has a mounting wall (54), the line-side isolating switch (2), the power-side isolating switch (3), the circuit breaker body (1) and the arc extinguishing detector (4) are all mounted on the mounting wall (54), and the safety box (5) is made of insulating material; the circuit breaker body (1) has a first knife switch (12), the line-side isolating switch (2) has a second knife switch (22), and the power-side isolating switch (3) has a third knife switch (32); a first cylinder (55), a second cylinder (56) and a third cylinder (57) are hingedly connected in the safety box (5); a sliding sleeve at the output end of the first cylinder (55) is provided with a movable sleeve (551); The end of the output end of the air cylinder (55) is provided with a suction cup (552); the movable sleeve (551) has an adsorption surface (553) for the suction cup (552) to be adsorbed; the end of the movable sleeve (551) away from the first cylinder (55) is hinged to the first knife switch (12); the output end of the second cylinder (56) is hinged to the second knife switch (22); the output end of the third cylinder (57) is hinged to the third knife switch (32); the first cylinder (55), the second cylinder (56) and the third cylinder (57) are all electrically connected to the control terminal (6); the arc extinguishing detector (4) is electrically connected to the control terminal (6) and sends the detected arc extinguishing signal to the control terminal (6); the control terminal (6) is arranged outside the safety box (5), and the control terminal (6) adopts an independent power supply and an independent circuit.

2. The intelligent control circuit breaker with protective isolating switch according to claim 1, characterized in that: The safety box (5) is provided with a first signal acquisition module (58), a second signal acquisition module (59) and a third signal acquisition module (60); when the first knife switch (12) is completely disconnected, it abuts against the first signal acquisition module (58); when the second knife switch (22) is completely disconnected, it abuts against the second signal acquisition module (59); when the third knife switch (32) is completely disconnected, it abuts against the third signal acquisition module (60); the first signal acquisition module (58), the second signal acquisition module (59) and the third signal acquisition module (60) are all electrically connected to the control terminal (6) and send pressure signals to the control terminal (6).

3. The intelligent control circuit breaker with protective isolating switch according to claim 1, characterized in that: The safety box (5) comprises a box body (51) and a box door (52), wherein the box door (52) is provided with a smart lock (53); the smart lock (53) is electrically connected to the control terminal (6), wherein the control terminal (6) has an identity recognition module, and the control terminal (6) controls the opening and closing of the smart lock (53) according to a signal received by the identity recognition module.

4. The intelligent control circuit breaker with protective isolating switch according to claim 3 is characterized in that: The smart lock (53) is a password lock, and a password input module corresponding to the smart lock (53) is arranged on the control terminal (6).

5. The intelligent control circuit breaker with protective isolating switch according to claim 1, characterized in that: The circuit breaker body (1), the line-side isolating switch (2) and the power supply side isolating switch (3) are arranged in sequence and spaced apart in a horizontal direction; a first limiting mechanism (7) is provided between the circuit breaker body (1) and the line-side isolating switch (2); the first knife switch (12) and the second knife switch (22) are both movably connected to the first limiting mechanism (7), so that the second knife switch (22) cannot rotate before the first knife switch (12) rotates to a completely open state, and the first knife switch (12) cannot rotate before the second knife switch (22) rotates to a completely closed state.

6. The intelligent control circuit breaker with protective isolating switch according to claim 5, characterized in that: The circuit breaker body (1) comprises a first housing (11), the first knife switch (12) being fixedly connected to a first connecting rod (13), the first connecting rod (13) being parallel to the first knife switch (12) and rotating synchronously with the first knife switch (12); the line-side disconnector (2) comprises a second housing (21), the second knife switch (22) being fixedly connected to a second connecting rod (23) on a side close to the first housing (11), the second connecting rod (23) being parallel to the second knife switch (22) and rotating synchronously with the second knife switch (22); The first limiting mechanism (7) comprises a first limiting plate (71), a circuit breaker linkage block (72) and a first line side linkage block (73); the circuit breaker linkage block (72) is arranged at an end of the first connecting rod (13) away from the first knife switch (12); the first line side linkage block (73) is arranged at an end of the second connecting rod (23) away from the second knife switch (22); the first limiting plate (71) is horizontally slidably connected to the mounting wall (54); a circuit breaker linkage groove (75) is arranged on a surface of the first limiting plate (71) close to the first box body (11); The circuit breaker linkage groove (75) is used for the circuit breaker linkage block (72) to slide; the circuit breaker linkage groove (75) comprises a first limiting groove (751) and a first sliding groove (752); the first limiting groove (751) is horizontally arranged on the upper side of the first limiting plate (71); the first sliding groove (752) is vertically arranged and the upper end is connected to an end of the first limiting groove (751) close to the mounting wall (54); when the first knife switch (12) is closed, the circuit breaker linkage block (72) is located at the end of the first sliding groove (752) away from the first limiting groove (751); A first line side linkage groove (76) is provided on a surface of the first limit plate (71) close to the second box body (21), and the first line side linkage groove (76) is used for the first line side linkage block (73) to slide; the first line side linkage groove (76) comprises a second limit groove (761) and a second sliding groove (762), the second limit groove (761) is horizontally arranged on the lower side of the first limit plate (71), and the second sliding groove (762) is vertically arranged and the lower end is connected to an end of the second limit groove (761) away from the installation wall (54); when the second knife switch (22) is closed, the first line side linkage block (73) is located at the end of the second limit groove (761) away from the second sliding groove (762).

7. The intelligent control circuit breaker with protective isolating switch according to claim 5 or 6, characterized in that: A second limiting mechanism (8) is provided between the line-side isolating switch (2) and the power-side isolating switch (3); the second knife switch (22) and the third knife switch (32) are both movably connected to the second limiting mechanism (8), so that the third knife switch (32) cannot rotate before the second knife switch (22) is rotated to be completely disconnected, and the second knife switch (22) cannot rotate before the third knife switch (32) is rotated to be completely closed.

8. The intelligent control circuit breaker with protective isolating switch according to claim 7, characterized in that: A third connecting rod (24) is fixedly connected to a side of the second knife switch (22) away from the second housing (21); the third connecting rod (24) is parallel to the second knife switch (22) and rotates synchronously with the second knife switch (22); the power supply side isolating switch (3) has a third housing (31); a fourth connecting rod (33) is fixedly connected to a side of the third knife switch (32) close to the second housing (21); the fourth connecting rod (33) is parallel to the third knife switch (32) and rotates synchronously with the third knife switch (32); The second limiting mechanism (8) comprises a second limiting plate (81), a second line side linkage block (82), and a power supply side linkage block (83); the second line side linkage block (82) is arranged at an end of the third connecting rod (24) away from the second knife switch (22); and the power supply side linkage block (83) is arranged at an end of the fourth connecting rod (33) away from the third knife switch (32); The second limit plate (81) is horizontally slidably connected to the mounting wall (54); a second line linkage groove is provided on a surface of the second limit plate (81) close to the second box body (21); the second line linkage groove comprises a third limit groove (851) and a third sliding groove (852); the third limit groove (851) is horizontally arranged on the upper side of the second limit plate (81); the third sliding groove (852) is vertically arranged and the upper end is connected to an end of the third limit groove (851) close to the mounting wall (54); A power supply side linkage groove (86) is provided on one side of the second limit plate (81) close to the third box body (31), and the power supply side linkage groove (86) is used for the power supply side linkage block (83) to slide; the power supply side linkage groove (86) comprises a fourth limit groove (861) and a fourth sliding groove (862), the fourth limit groove (861) is horizontally arranged on the lower side of the second limit plate (81), and the fourth sliding groove (862) is vertically arranged and the lower end is connected to an end of the fourth limit groove (861) away from the mounting wall (54).

9. The intelligent control circuit breaker with protective isolating switch according to claim 6, characterized in that: The first connecting rod (13) is detachably connected to the first box body (11), and the second connecting rod (23) is detachably connected to the second box body (21).

10. The intelligent control circuit breaker with protective isolating switch according to claim 9, characterized in that: The first knife gate (12) is fixed with a threaded rod (111), the threaded rod (111) is threadedly connected with a threaded sleeve (112), the first connecting rod (13) is provided with an external thread (131) at an end close to the first knife gate (12), and the threaded sleeve (112) is threadedly matched with the external thread (131).

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