Substation circuit breaker with remote control function and method

Abstract

The invention discloses a transformer substation circuit breaker with a remote control function and a method, and relates to the technical field of high-voltage transformer substation power grid control, the transformer substation circuit breaker comprises a bottom support and a relay control part, and further comprises a circuit breaker body fixedly installed on the bottom support and a remote control assembly matched with the circuit breaker body; the circuit breaker body is composed of an opening and closing assembly and an output connector. The remote control circuit breaker has the advantages that the circuit breaker body is remotely controlled by the remote control assembly during on-off control of a circuit of a high-voltage transformer substation, the purpose of remotely controlling the circuit is achieved, meanwhile, in the remote control process, the relay control component loses the control right on the conductive connecting cylinder, and the circuit breaker is protected. And a mechanical structure is adopted to control the opening and closing of the circuit breaker, voltage does not need to be added, the stability of circuit current can be ensured, the situation that electrical equipment is damaged due to current increase is avoided, and higher safety is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage substation power grid control, and in particular to a substation circuit breaker with a remote control function and a method thereof. Background Art

[0002] Substations are important facilities for power conversion and distribution in power systems. They mainly convert high-voltage power into low-voltage power or convert low-voltage power into high-voltage power. In order to protect electrical equipment and circuits from overload, short circuit and other fault conditions, circuit breakers need to be installed in substations to protect circuits and electrical equipment.

[0003] The circuit breakers currently used are controlled by relays. When the relay detects a change in the current in the circuit, it will disconnect the circuit through a controller. After the circuit is disconnected, an arc will be generated, and it is impossible to completely disconnect the circuit. Therefore, publication number CN110556262B discloses a high-voltage circuit breaker, which includes a main nozzle, an auxiliary nozzle and a heating channel arranged between them, the heating channel leads to the heating space, and in addition, there is another channel between the auxiliary nozzle and the first contact element of the two contact elements, the other channel is closed at the end, and the distance L1 measured along the direction of the center axis between the stagnation point and the narrowest position of the first contact element is in the range of between 5mm and 20mm.

[0004] The above-mentioned circuit breaker can form a sharply changing pressure distribution even when a small distance is used between the stagnation point and the narrowest position of the first contact element. The pressure distribution is largely independent of the shape or design of the auxiliary nozzle. Therefore, even in the case of wear of the auxiliary nozzle and thus surface changes or in the case of burn-through of the auxiliary nozzle, the pressure distribution hardly changes. The small acceleration distance and the tulip-shaped channel closed at the end result in an increase in the current breaking capacity of the high-voltage circuit breaker.

[0005] When the above-mentioned circuit breakers and the circuit breakers currently in use are used, relays are used to detect the current in the circuit and then control the opening and closing of the circuit breaker. However, when remotely controlled, voltage is applied to the circuit through an external device to change the current in the circuit, thereby triggering the operation of the relay. This will cause the current in the circuit to increase, affecting the normal operation of other electrical equipment in the circuit and even causing overvoltage damage to the electrical equipment.

[0006] Therefore, a novel substation circuit breaker and method with remote control function can be used to solve the deficiencies of the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problem of overvoltage damaging electrical equipment in the prior art, and to propose a circuit breaker and method for a substation with a remote control function.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A circuit breaker for a substation with a remote control function comprises a bottom bracket and a relay control component, and also comprises a circuit breaker body fixedly mounted on the bottom bracket and a remote control component matched with the circuit breaker body;

[0010] The circuit breaker body consists of an opening and closing assembly and an output connector, wherein an insulating cylinder is fixedly installed at both ends of the output connector, an input connector is fixedly installed in the insulating cylinder located at the upper part, a conductive plug rod is fixedly installed at the bottom of the input connector, a conductive connecting sleeve is fixedly installed on the output connector, a conductive connecting sleeve that cooperates with the conductive plug rod is slidably installed in the conductive connecting sleeve, the opening and closing assembly is installed on the bottom bracket, and is used to drive the conductive connecting cylinder to move, the relay control component is used to control the operation of the opening and closing assembly, and is used to control the connection and disconnection of the conductive connecting cylinder and the conductive plug rod, and the remote control component is used to independently control the connection between the conductive connecting cylinder and the conductive plug rod.

[0011] Preferably, a bottom insulator is fixedly installed on the outside of the insulating cylinder located at the lower part, and a top insulator is fixedly installed on the outside of the insulating cylinder located at the upper part.

[0012] Preferably, a top sealing sleeve and an air guide sleeve are fixedly installed in the upper insulating cylinder, the bottom of the air guide sleeve is fixedly connected to the side of the conductive connecting sleeve, a through hole matching the conductive plug rod is opened on the top sealing sleeve, and a sealing connecting sleeve is installed between the top of the air guide sleeve and the bottom of the top sealing sleeve.

[0013] Preferably, the opening and closing assembly comprises a control box fixedly mounted at the bottom of the bottom insulator, a protective sleeve is slidably mounted in the insulating cylinder located below, a push rod is fixedly mounted in the protective sleeve, a control box is fixedly mounted on the bottom bracket, and the protective sleeve and the push rod both extend into the interior of the control box;

[0014] The control box is provided with two sliding grooves, a sliding sleeve is slidably installed in each of the two sliding grooves, a rotating shaft is rotatably installed between the two sliding sleeves, the two sliding sleeves are connected to the control box through a reset mechanism, an induction control shaft is fixedly installed on the relay control component, the induction control shaft is connected to the rotating shaft through a telescopic universal coupling, a gear is fixedly installed on the rotating shaft, and a plurality of tooth grooves matching the gears are provided on the side of the protective sleeve.

[0015] Preferably, the remote control assembly includes a fixed plate fixedly mounted on the bottom bracket, two parallel rotating rods are rotatably mounted on the fixed plate, a connecting plate is commonly mounted on one end of the two rotating rods away from the fixed plate, the two rotating rods are rotatably connected to the connecting plate, an electric push rod is rotatably mounted on the fixed plate, and the telescopic end of the electric push rod is rotatably connected to the rotating rod located at the bottom;

[0016] A slide rail is fixedly installed on the connecting plate, and a plurality of frames are slidably installed on the slide rail. An electromagnet 2 is fixedly installed on the frames on both sides, and an electromagnet 1 is installed on the frame in the middle through a telescopic mechanism. A first magnetic plate matched with the electromagnet 1 is fixedly installed on the bottom of the protective cover, and two separation mechanisms matched with the electromagnet 2 and the rotating shaft are installed in the control box. Two electromagnets 3 are fixedly installed on the slide rail, and two locking mechanisms matched with the corresponding electromagnets 3 and the rotating shaft are installed in the control box. A plurality of circular holes are opened on the top of the control box.

[0017] Preferably, a plurality of rollers are rotatably mounted on the frame, a plurality of sliding grooves matching the corresponding rollers are provided on the slide rail, and an elastic telescopic rod is fixedly mounted between the frame and the slide rail.

[0018] Preferably, the telescopic mechanism includes a fixed plate fixedly mounted on the frame, on which a second elastic telescopic rod is fixedly mounted, the telescopic end of the second elastic telescopic rod is fixedly connected to an electromagnet, a plurality of first limit hooks are fixedly mounted on the bottom of the electromagnet, and a plurality of second limit hooks matching the corresponding first limit hooks are fixedly mounted on the fixed plate.

[0019] Preferably, the separation mechanism comprises a rod body slidably mounted on the control box, a wedge block cooperating with the rotating shaft is fixedly mounted on the upper portion of the rod body, and a second magnetic plate cooperating with the electromagnet is fixedly mounted on the bottom of the rod body.

[0020] Preferably, the locking mechanism includes a locking sleeve rotatably mounted on a rotating shaft, a plurality of first elastic telescopic rods are fixedly mounted between the locking sleeve and the side wall of the control box, a plurality of second elastic telescopic rods are fixedly mounted on the bottom of the control box, a disc is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods, a card plate is fixedly mounted on the disc, a card slot matching the card plate is formed on the locking sleeve, and a third magnetic plate matching the three-phase electromagnet is fixedly mounted on the bottom of the disc.

[0021] The present invention also provides a method for using a substation circuit breaker with a remote control function, comprising the above-mentioned substation circuit breaker with a remote control function, and further comprising the following steps:

[0022] S1. Relay control component control: When the current in the circuit changes and the change exceeds the limit value, the relay control will sense the current change in the circuit, and then control the opening and closing components to operate through the controller, and the opening and closing components will drive the conductive connection cylinder to move, so that the conductive connection cylinder and the conductive plug rod are separated, and the circuit breaker is cut off. When the circuit is restored, the controller will control the opening and closing components to operate in the reverse direction, so that the conductive connection cylinder and the conductive plug rod are in contact, and the circuit is connected;

[0023] S2. Remote control component control: When the circuit in the circuit has not changed, the relay control component will not be triggered. At this time, the remote control component is used to control the operation of the opening and closing component. While the remote control component is operating, it will not affect the relay control component. It is used to control the opening and closing of the circuit alone. After the remote control component controls the circuit to be disconnected, the relay control component detects that the current in the circuit has changed and will automatically enter the disconnected state. Once the circuit is restored, the relay control component will automatically reset.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. When the circuit breaker is used for high-voltage substation circuit control, a wedge block is set to separate the gear from the tooth groove during remote control. At this time, the conductive connection cylinder is controlled by the first magnetic plate and the electromagnet to separate the relay control components, so that the remote control component can independently control the disconnection between the conductive connection cylinder and the wire rod to achieve remote control.

[0026] 2. When the circuit breaker is controlling the high-voltage substation circuit, the locking sleeve is locked by setting a card plate in the locking mechanism to ensure that when the gear is engaged with the tooth groove, the rotating shaft is kept stable and unused, thereby improving the stability of the transmission between the gear and the protective sleeve. At the same time, the third magnetic plate and the electromagnet are used to unlock the lock of the rotating shaft before the rotating shaft moves, thereby ensuring that the gear and the tooth groove are separated when the rotating shaft moves when the remote control component is in operation. In conjunction with the top sealing sleeve, the sealing connection sleeve and the air guide cylinder, sulfur hexafluoride gas can be injected after disconnection to protect the circuit, so that the current in the circuit is slowly weakened, and the impact of sudden changes in the circuit current on electrical equipment is reduced, thereby protecting electrical equipment.

[0027] 3. When the circuit breaker is controlling the high-voltage substation circuit, a frame and a roller are set. After the first magnetic plate and the electromagnet 1 are attracted to each other, the frame moves on the slide rail when the slide rail is raised or lowered. Since the position of the first magnetic plate remains unchanged while the position of the slide rail changes, the position of the electromagnet 1 needs to be changed at this time to ensure that the first magnetic plate and the electromagnet 1 are attracted to each other when the slide rail moves, so as to drive the first magnetic plate to move, thereby driving the conductive connecting tube to move, which can effectively avoid the occurrence of misalignment and ensure that the first magnetic plate and the electromagnet 1 after attraction make linear motion in the vertical direction again.

[0028] In summary, when the present invention performs the opening and closing control of the high-voltage substation circuit, a remote control component is used to remotely control the circuit breaker body to achieve the purpose of remote control of the circuit. At the same time, during the remote control process, the relay control component loses control of the conductive connecting tube, and a mechanical structure is used to control the opening and closing of the circuit breaker. There is no need to add voltage, which can ensure the stability of the circuit current and avoid the damage of electrical equipment caused by the increase of current, thereby having higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic structural diagram of a circuit breaker for a substation with a remote control function proposed by the present invention;

[0031] Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0032] Figure 3 for Figure 1 Detailed schematic diagram of the structure after removing the bottom bracket and rotating it to a certain angle;

[0033] Figure 4 for Figure 3 A schematic detailed view of the planar structure along one of the angles after the remote control assembly is removed;

[0034] Figure 5 for Figure 4 Detailed schematic diagram of the three-dimensional structure along the AA section;

[0035] Figure 6 for Figure 5 Detailed schematic diagram of the middle output connector, top insulator and its internal structure;

[0036] Figure 7 for Figure 5 Detailed schematic diagram of the exploded structure;

[0037] Figure 8 for Figure 7 An enlarged structural schematic detail diagram of the central control box, telescopic universal coupling and protective sleeve;

[0038] Fig. 9 for Figure 8 A schematic detailed view of the plan structure along one of the angles;

[0039] Fig.10 for Fig. 9 Detailed schematic diagram of the three-dimensional structure along the BB section;

[0040] Fig.11 for Fig.10 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0041] Fig.12 for Fig.10 A detailed structural diagram after removing the induction control shaft, telescopic universal coupling and control box and rotating them to a certain angle;

[0042] Fig.13 for Fig.12 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0043] Fig.14 for Fig.13 A schematic detailed view of the plan structure along one of the angles;

[0044] Fig.15 for Fig.12 An enlarged structural schematic detail diagram of the middle locking sleeve and its surrounding components;

[0045] Fig.16 for Fig.15 Detailed schematic diagram of the exploded structure;

[0046] Fig.17 for Figure 3 A detailed diagram of the enlarged structure of the remote control assembly after the rotation angle;

[0047] Fig.18 for Fig.17 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0048] Fig.19 for Fig.18 A detailed diagram of the enlarged structure of the electromagnet 1 and its surrounding components;

[0049] Fig. 20 for Fig.19 Detailed diagram of the exploded structure of the middle electromagnet, the fixed plate and the first limit hook.

[0050] In the figure: 1 bottom bracket, 2 bottom insulator, 3 top insulator, 4 output connector, 5 input connector, 6 opening and closing assembly, 7 remote control assembly, 8 telescopic universal coupling, 9 induction control shaft, 10 control box, 11 conductive plug rod, 12 top sealing sleeve, 13 sealing connection sleeve, 14 conductive connection tube, 15 conductive connection sleeve, 16 insulating tube, 17 protective sleeve, 18 air guide tube, 19 push rod, 20 rotating shaft, 21 sliding sleeve, 22 reset mechanism, 23 wedge block, 24 limit sleeve, 25 locking sleeve, 26 gear, 27 tooth groove, 28 first magnetic plate, 29 second magnetic plate, 30 first elastic telescopic rod, 31 clamping plate, 32 third magnetic plate, 33 second elastic telescopic rod, 34 disc, 35 fixed plate, 36 electric push rod, 37 rotating rod, 38 connecting plate, 39 slide rail, 40 electromagnet 2, 41 electromagnet 1, 42 electromagnet 3, 43 frame, 44 elastic telescopic rod 1, 45 roller, 46 fixed plate, 47 first limit hook, 48 second limit hook, 49 elastic telescopic rod 2. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Example 1: Reference Figure 1-Figure 11 , a circuit breaker for a substation with a remote control function, comprising a bottom bracket 1 and a relay control component, and also comprising a circuit breaker body fixedly mounted on the bottom bracket 1 and a remote control component 7 matched with the circuit breaker body;

[0053] The relay control component is an existing control unit, and its specific structure is not shown in the diagram, but its specific working principle and operation mode are described in detail below.

[0054] The circuit breaker body consists of an opening and closing component 6 and an output connector 4. An insulating cylinder 16 is fixedly installed at both ends of the output connector 4. The input connector 5 is fixedly installed in the insulating cylinder 16 at the upper part. A conductive plug rod 11 is fixedly installed at the bottom of the input connector 5. A conductive connecting sleeve 15 is fixedly installed on the output connector 4. A conductive connecting sleeve 15 is slidably installed with a conductive connecting cylinder 14 that matches the conductive plug rod 11. The opening and closing component 6 is installed on the bottom bracket 1 and is used to drive the conductive connecting cylinder 14 to move. The relay control component is used to control the operation of the opening and closing component 6.

[0055] Reference Figure 6The current in the circuit enters from the input connector 5, and then is output from the output connector 4 through the conductive plug rod 11, the conductive connecting tube 14 and the conductive connecting sleeve 15. After the conductive connecting tube 14 is separated from the conductive plug rod 11, the circuit is in a disconnected state. The conductive connecting tube 14 is cylindrical, and the conductive plug rod 11 can be inserted into the conductive connecting tube 14, which can increase the contact area, thereby improving the stability of the connection between the conductive connecting tube 14 and the conductive plug rod 11.

[0056] A bottom insulator 2 is fixedly installed on the outside of the lower insulating tube 16, and a top insulator 3 is fixedly installed on the outside of the upper insulating tube 16; they are used for insulation protection, isolating the current conduction between the conductor and the ground or other conductive objects, preventing current leakage, and ensuring the safe and stable operation of the power system. At the same time, they can effectively prevent the expansion of the arc and prevent electrical equipment and other components of the power system from being damaged.

[0057] The top sealing sleeve 12 and the air guide sleeve 18 are fixedly installed in the upper insulating cylinder 16. The bottom of the air guide sleeve 18 is fixedly connected to the side of the conductive connecting sleeve 15. A through hole matching the conductive plug rod 11 is opened on the top sealing sleeve 12. A sealing connecting sleeve 13 is installed between the top of the air guide sleeve 18 and the bottom of the top sealing sleeve 12.

[0058] Reference Figure 7-Figure 10 The opening and closing assembly 6 includes a control box 10 fixedly mounted at the bottom of the bottom insulator 2, a protective sleeve 17 is slidably mounted in the insulating cylinder 16 located below, a push rod 19 is fixedly mounted in the protective sleeve 17, and the control box 10 is fixedly mounted on the bottom bracket 1, and the protective sleeve 17 and the push rod 19 both extend into the control box 10;

[0059] The push rod 19 is used to push the conductive connection tube 14 to slide in the conductive connection sleeve 15 , thereby changing the position of the conductive connection tube 14 and realizing the disconnection and connection between the conductive connection tube 14 and the conductive plug rod 11 .

[0060] A hole larger than the diameter of the protective sleeve 17 is provided at the bottom of the control box 10, and a limiting sleeve 24 matching the protective sleeve 17 is installed in the hole to reduce friction, so that the protective sleeve 17 can slide more smoothly and stably on the control box 10, and at the same time, the service life of the protective sleeve 17 can be extended.

[0061] The control box 10 is provided with two sliding grooves, each of which has a sliding sleeve 21 slidably installed in the two sliding grooves, a rotating shaft 20 is installed between the two sliding sleeves 21 for common rotation, and the two sliding sleeves 21 are connected to the control box 10 through a reset mechanism 22. An induction control shaft 9 is fixedly installed on the relay control component, and the induction control shaft 9 is connected to the rotating shaft 20 through a telescopic universal coupling 8. A gear 26 is fixedly installed on the rotating shaft 20, and a plurality of tooth grooves 27 matching the gear 26 are provided on the side of the protective sleeve 17.

[0062] The reset mechanism 22 is a common reset unit, which is composed of a plurality of springs and is used to reset the sliding sleeve 21 so that the rotating shaft 20 returns to its original position.

[0063] The movement of the rotating shaft 20 will drive the sliding sleeve 21 to move. The movement of the sliding sleeve 21 will not affect the rotation of the rotating shaft 20. Since the sliding sleeve 21 and the rotating shaft 20 will move, and the position of the sensing control shaft 9 remains unchanged, a telescopic universal coupling 8 is used to connect the sensing control shaft 9 and the rotating shaft 20 to ensure that the rotation of the sensing control shaft 9 can drive the rotating shaft 20 to rotate.

[0064] The rotation of the rotating shaft 20 drives the gear 26 to rotate, and under the action of the tooth groove 27, the protective sleeve 17 is driven to move on the control box 10, thereby driving the conductive connecting tube 14 to move.

[0065] Relay control component: The relay control component is an existing control unit, which includes a relay, a controller, a resetter and a transmission box. The relay senses the current in the circuit. Once the current exceeds the limit value, the relay sends a signal to the controller, and the controller controls the operation of the transmission box. The transmission box is fixedly connected to the induction control shaft 9, and the transmission box will drive the rotating shaft 20 to rotate through the induction control shaft 9, so as to adjust the position of the conductive connecting tube 14 and realize the opening and closing of the circuit breaker.

[0066] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 3 , Figure 8-Figure 20 , controls the connection and disconnection between the conductive connecting tube 14 and the conductive plug rod 11 , and the remote control component 7 is used to independently control the connection between the conductive connecting tube 14 and the conductive plug rod 11 .

[0067] The remote control assembly 7 includes a fixed plate 35 fixedly mounted on the bottom bracket 1, on which two parallel rotating rods 37 are rotatably mounted, and a connecting plate 38 is commonly mounted at one end of the two rotating rods 37 away from the fixed plate 35, and the two rotating rods 37 are rotatably connected to the connecting plate 38, and an electric push rod 36 is rotatably mounted on the fixed plate 35, and the telescopic end of the electric push rod 36 is rotatably connected to the rotating rod 37 located at the bottom; a slide rail 39 is fixedly mounted on the connecting plate 38.

[0068] The two rotating rods 37 are designed to be parallel. When the electric push rod 36 drives the rotating rod 37 at the bottom to rotate around the fulcrum on the fixed plate 35, it will drive the other rotating rod 37 to rotate through the connecting plate 38. According to the parallelogram principle, no matter how the rotating rod 37 rotates, the connecting plate 38 at its end always remains in a vertical state, so the slide rail 39 fixedly connected to the connecting plate 38 will also remain in a horizontal state (due to the length limitation of the slide rail 39, the rotating rod 37 can only rotate upward, and the rotation direction here refers to Fig.17 as well as Fig.18 ).

[0069] A plurality of frames 43 are slidably mounted on the slide rail 39, and an electromagnet 2 40 is fixedly mounted on the frames 43 on both sides, and an electromagnet 1 41 is mounted on the frame 43 in the middle via a telescopic mechanism;

[0070] A plurality of rollers 45 are rotatably mounted on the frame 43 , a plurality of sliding grooves corresponding to the rollers 45 are provided on the slide rail 39 , and an elastic telescopic rod 44 is fixedly mounted between the frame 43 and the slide rail 39 , and the elastic telescopic rod 44 is used to reset the frame 43 .

[0071] When the first magnetic plate 28 and the electromagnet 41 are attracted to each other, since the first magnetic plate 28 can only move up and down, and the electromagnet 41 will move with the slide rail 39, and the slide rail 39 not only moves up and down but also moves left and right, in order to ensure that the electromagnet 41 and the first magnetic plate 28 are attracted to each other, the electromagnet 41 needs to move left and right on the slide rail 39, and the roller 45 and the frame 43 can realize the movement of the electromagnet 41.

[0072] A first magnetic plate 28 matching the first electromagnet 41 is fixedly mounted on the bottom of the protective cover 17, and two separation mechanisms matching the second electromagnet 40 and the rotating shaft 20 are installed in the control box 10;

[0073] The separation mechanism comprises a rod body slidably mounted on the control box 10 , a wedge block 23 matched with the rotating shaft 20 is fixedly mounted on the upper part of the rod body, and a second magnetic plate 29 matched with the electromagnet 2 40 is fixedly mounted on the bottom of the rod body.

[0074] The telescopic mechanism includes a fixed plate 46 fixedly mounted on the frame 43, on which an elastic telescopic rod 2 49 is fixedly mounted, the telescopic end of the elastic telescopic rod 2 49 is fixedly connected to the electromagnet 1 41, a plurality of first limit hooks 47 are fixedly mounted at the bottom of the electromagnet 1 41, and a plurality of second limit hooks 48 matching the corresponding first limit hooks 47 are fixedly mounted on the fixed plate 46.

[0075] When all the electromagnets (the first magnetic plate 28, the second magnetic plate 29, and the third magnetic plate 32) are in a power-off state, the heights of the first electromagnet 41, the second electromagnet 40, and the third electromagnet 42 are the same, and when the three electromagnets move synchronously, the wedge block 23 and the protective cover 17 move simultaneously, and the tooth groove 27 on the protective cover 17 moves under the obstruction of the gear 26, which will cause jamming. In order to avoid jamming, it is necessary to first drive the wedge block 23 to move, and then drive the protective cover 17 to move;

[0076] After the electromagnets (the electromagnets are collectively referred to as electromagnet 1 41, electromagnet 2 40 and electromagnet 3 42 for ease of description) and the magnetic plates (the magnetic plates are collectively referred to as the first magnetic plate 28, the second magnetic plate 29 and the third magnetic plate 32 for ease of description) are attracted to each other, when the second magnetic plate 29 moves, the wedge block 23 will drive the rotating shaft 20 to move, and at this time the elastic telescopic rod 2 49 between the electromagnet 1 41 and the fixed disk 46 is extended, keeping the electromagnet 1 41 and the first magnetic plate 28 attracted to each other, but the position of the electromagnet 1 41 remains unchanged until the first limit hook 47 and the second limit hook 48 are abutted, and then the first magnetic plate 28 can be driven to move downward, and at this time the tooth groove 27 is separated from the gear 26, so there will be no jamming.

[0077] Two electromagnets 3 42 are fixedly mounted on the slide rail 39 , and two locking mechanisms matching the corresponding electromagnets 3 42 and the rotating shaft 20 are installed in the control box 10 , and a plurality of circular holes are opened on the top of the control box 10 .

[0078] The circular holes are used for the passage of electromagnet 1 41, electromagnet 2 40 and electromagnet 3 42 to ensure that the electromagnets and the magnetic plate are attracted to each other.

[0079] Since the meshing transmission between the gear 26 and the tooth groove 27 will generate a mutual pressing force, if the rotating shaft 20 is not restricted, the rotating shaft 20 will be driven to move under the pressing force, and the transmission effect cannot be achieved. The rotating shaft 20 needs to be locked.

[0080] The locking mechanism includes a locking sleeve 25 rotatably mounted on the rotating shaft 20, a plurality of first elastic telescopic rods 30 are fixedly mounted between the locking sleeve 25 and the side wall of the control box 10, a plurality of second elastic telescopic rods 33 are fixedly mounted on the bottom of the control box 10, a disc 34 is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods 33, a card plate 31 is fixedly mounted on the disc 34, a card slot matching the card plate 31 is opened on the locking sleeve 25, and a third magnetic plate 32 matching the electromagnet 42 is fixedly mounted on the bottom of the disc 34.

[0081] As the electromagnet three 42 approaches the third magnetic plate 32, the distance between them becomes smaller and smaller, and the attraction generated becomes larger and larger. When the attraction is greater than the total elastic force of the multiple second elastic telescopic rods 33, the third magnetic plate 32 will drive the disk 34 and the card plate 31 to move toward the side close to the electromagnet three 42, so that the card plate 31 is separated from the card slot. At this time, the locking sleeve 25 loses the limit of the card plate 31 and will move with the rotating shaft 20 (this process is the operation mode during remote control).

[0082] When the circuit breaker is closed, the card plate 31 will be stuck in the card slot (the end of the card plate 31 is trapezoidal, which can lock the locking sleeve 25 in one direction). At this time, the locking sleeve 25 and the rotating shaft 20 are locked and cannot be pushed open by the pressing force, so the transmission operation can be performed.

[0083] The specific operation steps of this device are as follows:

[0084] Relay control component control: When the current in the circuit changes and the change exceeds the limit value, the relay control will sense the current change in the circuit, and then control the opening and closing component 6 to operate through the controller, and drive the conductive connection cylinder 14 to move through the opening and closing component 6, so that the conductive connection cylinder 14 is separated from the conductive plug rod 11, and the circuit breaker is cut off. When the circuit is restored, the controller controls the opening and closing component 6 to operate in the reverse direction, so that the conductive connection cylinder 14 contacts the conductive plug rod 11, and the circuit is connected;

[0085] Control by remote control component 7: When the circuit in the circuit has not changed, the relay control component will not be triggered. At this time, the operation of the opening and closing component 6 is controlled by the remote control component 7. While the remote control component 7 is operating, it will not affect the relay control component. It is used to control the opening and closing of the circuit independently. After the remote control component 7 controls the circuit to be disconnected, the relay control component detects that the current in the circuit has changed and will automatically enter the disconnected state. Once the circuit is restored, the relay control component will automatically reset.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circuit breaker for a substation with a remote control function, comprising a bottom bracket (1) and a relay control component, characterized in that: It also includes a circuit breaker body fixedly mounted on the bottom bracket (1) and a remote control assembly (7) matched with the circuit breaker body; The circuit breaker body is composed of an opening and closing component (6) and an output connector (4), wherein an insulating cylinder (16) is fixedly installed at both ends of the output connector (4), an input connector (5) is fixedly installed in the insulating cylinder (16) located at the upper part, a conductive plug rod (11) is fixedly installed at the bottom of the input connector (5), a conductive connection sleeve (15) is fixedly installed on the output connector (4), a conductive connection sleeve (14) matching with the conductive plug rod (11) is slidably installed in the conductive connection sleeve (15), the opening and closing component (6) is installed on the bottom bracket (1) and is used to drive the conductive connection sleeve (14) to move, the relay control component is used to control the operation of the opening and closing component (6) and to control the connection and disconnection between the conductive connection sleeve (14) and the conductive plug rod (11), and the remote control component (7) is used to independently control the connection between the conductive connection sleeve (14) and the conductive plug rod (11).

2. The circuit breaker for a substation with a remote control function according to claim 1, characterized in that: A bottom insulator (2) is fixedly mounted on the outside of the insulating cylinder (16) at the lower part, and a top insulator (3) is fixedly mounted on the outside of the insulating cylinder (16) at the upper part.

3. The circuit breaker for a substation with a remote control function according to claim 1, characterized in that: A top sealing sleeve (12) and an air guide sleeve (18) are fixedly installed in the upper insulating sleeve (16); the bottom of the air guide sleeve (18) is fixedly connected to the side of the conductive connecting sleeve (15); a through hole matching the conductive plug rod (11) is provided on the top sealing sleeve (12); and a sealing connecting sleeve (13) is installed between the top of the air guide sleeve (18) and the bottom of the top sealing sleeve (12).

4. The circuit breaker for a substation with a remote control function according to claim 1, characterized in that: The opening and closing assembly (6) comprises a control box (10) fixedly mounted at the bottom of the bottom insulator (2); a protective sleeve (17) is slidably mounted in the insulating cylinder (16) located below; a push rod (19) is fixedly mounted in the protective sleeve (17); the control box (10) is fixedly mounted on the bottom bracket (1); and the protective sleeve (17) and the push rod (19) both extend into the interior of the control box (10); The control box (10) is provided with two sliding grooves, each of which has a sliding sleeve (21) slidably installed in the two sliding grooves, a rotating shaft (20) is rotatably installed between the two sliding sleeves (21), and the two sliding sleeves (21) are connected to the control box (10) via a reset mechanism (22). The relay control component is fixedly provided with an induction control shaft (9), and the induction control shaft (9) is connected to the rotating shaft (20) via a telescopic universal coupling (8). A gear (26) is fixedly provided on the rotating shaft (20), and a plurality of tooth grooves (27) matching with the gear (26) are provided on the side of the protective sleeve (17).

5. The circuit breaker for a substation with a remote control function according to claim 4, characterized in that: The remote control assembly (7) comprises a fixed plate (35) fixedly mounted on the bottom bracket (1), two parallel rotating rods (37) are rotatably mounted on the fixed plate (35), a connecting plate (38) is commonly mounted on one end of the two rotating rods (37) away from the fixed plate (35), the two rotating rods (37) and the connecting plate (38) are rotatably connected, an electric push rod (36) is rotatably mounted on the fixed plate (35), and the telescopic end of the electric push rod (36) is rotatably connected to the rotating rod (37) located at the bottom; A slide rail (39) is fixedly mounted on the connecting plate (38), and a plurality of frames (43) are slidably mounted on the slide rail (39). An electromagnet 2 (40) is fixedly mounted on each of the frames (43) on both sides, and an electromagnet 1 (41) is mounted on the frame (43) in the middle via a telescopic mechanism. A first magnetic plate (28) matching the electromagnet 1 (41) is fixedly mounted on the bottom of the protective sleeve (17), and two separation mechanisms matching the electromagnet 2 (40) and the rotating shaft (20) are mounted in the control box (10). Two electromagnets 3 (42) are fixedly mounted on the slide rail (39), and two locking mechanisms matching the corresponding electromagnets 3 (42) and the rotating shaft (20) are mounted in the control box (10), and a plurality of circular holes are opened on the top of the control box (10).

6. The circuit breaker for a substation with a remote control function according to claim 5, characterized in that: A plurality of rollers (45) are rotatably mounted on the frame (43), a plurality of sliding grooves matching the corresponding rollers (45) are provided on the slide rail (39), and an elastic telescopic rod (44) is fixedly mounted between the frame (43) and the slide rail (39).

7. The circuit breaker for a substation with a remote control function according to claim 5, characterized in that: The telescopic mechanism comprises a fixed plate (46) fixedly mounted on a frame (43), a second elastic telescopic rod (49) fixedly mounted on the fixed plate (46), a telescopic end of the second elastic telescopic rod (49) fixedly connected to an electromagnet (41), a plurality of first limit hooks (47) fixedly mounted on the bottom of the electromagnet (41), and a plurality of second limit hooks (48) matched with the corresponding first limit hooks (47) fixedly mounted on the fixed plate (46).

8. The circuit breaker for a substation with a remote control function according to claim 5, characterized in that: The separation mechanism comprises a rod body slidably mounted on a control box (10), a wedge block (23) matched with a rotating shaft (20) being fixedly mounted on the upper part of the rod body, and a second magnetic plate (29) matched with a second electromagnet (40) being fixedly mounted on the bottom of the rod body.

9. The circuit breaker for a substation with a remote control function according to claim 5, characterized in that: The locking mechanism comprises a locking sleeve (25) rotatably mounted on a rotating shaft (20); a plurality of first elastic telescopic rods (30) are fixedly mounted between the locking sleeve (25) and a side wall of a control box (10); a plurality of second elastic telescopic rods (33) are fixedly mounted on the bottom of the control box (10); a disc (34) is fixedly mounted on the telescopic ends of the plurality of second elastic telescopic rods (33); a card plate (31) is fixedly mounted on the disc (34); a card slot matching the card plate (31) is provided on the locking sleeve (25); and a third magnetic plate (32) matching an electromagnet (42) is fixedly mounted on the bottom of the disc (34).

10. A method for using a circuit breaker for a substation with a remote control function, used for a circuit breaker for a substation with a remote control function as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, control of the relay control component: when the current in the circuit changes and the change exceeds the limit value, the relay control will sense the current change in the circuit, and then control the opening and closing component (6) to operate through the controller, and drive the conductive connection cylinder (14) to move through the opening and closing component (6), so that the conductive connection cylinder (14) and the conductive plug rod (11) are separated, and the circuit breaker is cut off. When the circuit is restored, the controller controls the opening and closing component (6) to operate in the reverse direction, so that the conductive connection cylinder (14) and the conductive plug rod (11) are in contact, and the circuit is connected; S2, remote control component (7) control: when the current in the circuit does not change, the relay control component will not be triggered. At this time, the remote control component (7) is used to control the operation of the opening and closing component (6). When the remote control component (7) is in operation, it will not affect the relay control component, which is used to independently control the opening and closing of the circuit. After the remote control component (7) controls the circuit to be disconnected, the relay control component detects that the current in the circuit has changed and automatically enters the disconnected state. Once the circuit is restored, the relay control component will automatically reset.

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