CN116130312A - Drop-out quick-break switch capable of taking energy through capacitor - Google Patents

Abstract

The invention provides a capacitor energy-taking drop-out quick-break switch which comprises an insulating mounting seat, an arc extinguishing device, a drop-out piece, a capacitor voltage-dividing energy-taking device and a detection and control communication device, wherein the insulating mounting seat, the arc extinguishing device and the drop-out piece are sequentially arranged in series, the capacitor voltage-dividing energy-taking device and the detection and control communication device are arranged corresponding to a circuit, the detection and control communication device comprises a control module, a communication module and a driving module, a pushing mechanism is correspondingly arranged on one side of the drop-out piece, and the communication module is in communication connection with a master station or other man-machine interaction equipment and is used for uploading data information or receiving remote control instructions. The invention solves the energy supply problem of the equipment in a capacitive energy taking mode, has the self energy taking function, does not need an external power supply, reduces the complexity of the equipment, is lighter and more convenient to transport, install and replace parts, and also avoids strong electric interference which possibly occurs when the power supply is arranged beside a high-voltage line, thereby ensuring the safety and reliability of the whole structure.

Description

Drop-out quick-break switch capable of taking energy through capacitor

Technical Field

The invention relates to the technical field of drop-out switches, in particular to a capacitor energy-taking drop-out quick-break switch.

Background

Over 90% of temporary faults of the overhead distribution line occur on the branch, and drop-out switches are mostly adopted for branch protection. Most of the existing drop-out switches are of fuse structures, moving contacts at two ends of a fuse tube are tied by means of fuses, after an upper moving contact is pushed into a protruding part of a duckbill, an upper fixed contact made of phosphorus copper sheets and the like is propped against the upper moving contact, and therefore the fuse tube is firmly clamped in the duckbill. When the short-circuit current is blown out through the fuse, an electric arc is generated, a large amount of gas is generated in the steel paper tube of the fuse tube lining under the action of the electric arc, the upper end of the fuse tube is sealed, and the gas is sprayed out to the lower end to blow out the electric arc. Because the fuse is fused, the upper and lower moving contacts of the fuse tube lose the fastening force of the fuse, and under the action of the gravity of the fuse tube and the spring pieces of the upper and lower fixed contacts, the fuse tube drops rapidly, so that a circuit is disconnected, and a fault section line or fault equipment is cut off.

But there are some problems with the drop-out fuses of this type. Because the fuse wire is blown out as the principle of breaking, and the time before the fuse body is opened is long, the situation that the fuse body cannot be blown out before the outlet switch of the transformer substation cuts off the fault current is likely to occur, so that the drop-out fuse cannot correctly isolate the fault point, and fault equipment is shorted again when the circuit is reclosed, so that the circuit is reclosed to fail, and the whole line is in power failure. Thus, the effect of locating the area where the fault equipment is located by rapidly powering off the drop-out switch cannot be achieved. The existing drop-out quick-break switch has the current energy-taking threshold value larger than 5A, and cannot be applied to small-capacity load protection, but the small-capacity load widely exists in a power grid, so that the application range of the drop-out quick-break switch is greatly limited.

In addition, the existing drop-out switch often lacks intelligent control and real-time monitoring functions, has no communication function, and when a line fault occurs, a power grid maintenance personnel cannot quickly know the fault location and needs a certain fault checking time, so that the power failure time caused by the line fault is prolonged.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides a capacitor energy-taking drop-out type quick-break switch, which solves a series of problems in the prior art that the fault position is difficult to locate, the application range is narrow, intelligent monitoring and real-time communication functions are impossible, and the like.

According to the embodiment of the invention, the drop-out quick-break switch for capacitive energy taking comprises an insulating mounting seat, an arc extinguishing device and a drop piece which are sequentially connected in series, and further comprises a capacitive voltage dividing energy taking device and a detection control communication device which are arranged corresponding to a circuit, wherein the capacitive voltage dividing energy taking device is connected with the circuit to take electricity in a voltage mutual inductance mode and supply power for the detection control communication device; the communication module is in communication connection with a master station or other man-machine interaction equipment, and is used for uploading data information or receiving remote control instructions.

Furthermore, the insulating mounting seat, the arc extinguishing device and the falling piece are all in columnar structures, the insulating mounting seat and the falling piece are arranged in parallel, and two ends of the arc extinguishing device are respectively connected with one ends of the insulating mounting seat and the falling piece; the detection and control communication device is arranged at one end of the insulating mounting seat, which is far away from the arc extinguishing device, and the capacitive voltage dividing and energy taking device is arranged in an area surrounded by the insulating mounting seat, the arc extinguishing device, the falling part and the detection and control communication device.

Further, the capacitive voltage division energy-taking device comprises an energy-taking module and an electricity-charging protection module, wherein the energy-taking module comprises a high-voltage capacitor and a low-voltage capacitor, voltage mutual inductance is realized, electricity is taken, and the electricity-charging protection module is respectively connected with the energy-taking module and the detection and control communication device and is used for protecting equipment when power is supplied.

Further, the detection and control communication device further comprises a current sensor and an AD converter, wherein the current sensor is matched with the circuit to obtain a current value, the AD converter converts a current signal output by the current sensor into a digital signal, the digital signal is input into the control module, and the control module analyzes the data and monitors the line current in real time.

Further, the control module is further provided with a signal generator, and the control module outputs a control signal and then outputs an excitation signal to the driving module through the signal generator so that the driving module starts to work.

Further, the driving module is a resonant power amplifier and comprises a transmitting coil and a receiving coil which are adjacently arranged, and the resonance of an alternating electromagnetic field in the transmitting coil and the receiving coil is utilized to enable the receiving coil to generate voltage, so that energy transfer is completed, and electric energy received in the receiving coil is transmitted to the pushing mechanism to enable the pushing mechanism to start working.

Further, the pushing mechanism comprises a cylinder and a gas generator arranged in the cylinder, a piston push rod is arranged at one end of the cylinder, and the piston push rod is driven to move outwards by increasing air pressure in the cylinder through the gas generator.

Further, the arc extinguishing device is a vacuum arc extinguishing device and comprises a vacuum tube, a vacuum tube fixed contact and a vacuum tube moving contact which are arranged in the vacuum tube, wherein the vacuum tube moving contact is positioned at one end close to the falling piece; the outer end of the vacuum tube moving contact is also coaxially connected with a transmission push rod, a bearing is arranged on the side surface of the transmission push rod along the radial direction, the outer end of the piston push rod is coaxially connected with a driving push rod, the transmission push rod, the bearing and the driving push rod are perpendicular to each other, the driving push rod is abutted to the bearing, a chute is arranged on the driving push rod, the chute is gradually concaved and inclined along one end facing the bearing, a concave bayonet is adjacently arranged on one side of the chute, close to the piston push rod, and the depth of the bayonet is smaller than the concave depth of the chute; when the piston push rod does not move outwards, and the vacuum tube fixed contact and the vacuum tube movable contact are in normal contact, the bearing is positioned at the bottom in the chute, and when the piston push rod drives the push rod to move outwards, the inclined surface of the chute drives the bearing and the transmission push rod to move towards one side of the falling piece, so that the vacuum tube movable contact is separated from the vacuum tube fixed contact, and a circuit is disconnected.

Further, an external fixed contact is arranged at one end of the arc extinguishing device, which is close to the falling part, a conductive contact is correspondingly arranged on the falling part, the falling part and the piston push rod are arranged in parallel, an annular clamping seat is sleeved outside the falling part, a clamping part is arranged between the clamping seat and the outer wall of the falling part, and a connecting rod is arranged between the clamping seat and the piston push rod for fixing; when the piston push rod outwards moves, the clamping seat moves relative to the falling piece, so that the clamping piece is extruded and falls off, at the moment, the falling piece and the clamping seat are fastened, the falling piece moves downwards under the gravity, and the conductive contact is separated from the external static contact, so that a visual breakpoint is formed.

Further, the inside wire that is equipped with of piece falls, wire one end and conductive contact fixed connection, the other end stretches out and falls the piece outside and buckle the back fixed setting, and the wire is located the inboard of falling the outside section of buckling of piece and is equipped with the pressure spring, and the pressure spring exerts thrust to the wire section of buckling for the wire pulls conductive contact towards the direction removal of keeping away from outside stationary contact.

Further, the one end that the drive push rod is located vacuum arc-extinguishing device still is equipped with the connection piece, and the vacuum arc-extinguishing device outside is equipped with reset handle, reset handle perpendicular to vacuum tube rotates to be connected on vacuum arc-extinguishing device's casing, and reset handle one end is located vacuum arc-extinguishing device outside and is equipped with the pull ring, and the other end is located vacuum arc-extinguishing device inside and is equipped with the bar spread groove, sliding connection between connection piece and the bar spread groove.

Further, a fixed seat is arranged at one end outside the insulating mounting seat, and the fixed seat is matched with a fastener to be fixedly mounted with the telegraph pole; the middle part of the insulating installation seat is also provided with an incoming wire binding post for connecting a circuit incoming wire, and the incoming wire binding post is connected to the arc extinguishing device through a conductor inside the insulating installation seat.

Further, one end of the falling part, far away from the arc extinguishing device, is connected to the detection and control communication device through a conductor, the conductor penetrates through the detection and control communication device, an outgoing terminal of a connecting line outgoing line is arranged outside the detection and control communication device, and a current sensor inside the detection and control communication device acquires a current value through a measuring coil surrounding the conductor.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention solves the energy supply problem of the equipment in a capacitive energy-taking mode, has self-energy-taking function, does not need an external power supply, reduces the complexity of the equipment, is lighter and more convenient to transport, install and replace parts, and also avoids strong electric interference which can occur when the power supply is arranged beside a high-voltage line, so that the whole structure is safe and reliable;

2. the invention can take energy through the capacitor under the condition of 0 current and can normally operate under the condition of no current, thereby getting rid of the limit of the operating current threshold value, greatly improving the application range, and particularly being capable of being used in a large amount in a power grid with small capacity load;

3. the invention pushes the piston push rod in the cylinder by a mode that the gas generator generates a large amount of gas in a short time, and then drives the arc extinguishing device to be disconnected by a mechanical structure, thereby solving the problems of low arc extinguishing capability caused by the influence of an arc extinguishing medium and gas generating materials on the inner wall of the melting pipe in the traditional arc extinguishing device, low gas yield and low speed, and the arc cannot be effectively blown and cooled when the arc is generated; in addition, the drop piece and the arc extinguishing device can be simultaneously and physically disconnected to generate obvious visual break points, compared with the traditional melt fusing type break, the device has higher reliability, has the function of instantaneous cut-off, which is not influenced by melt fusing time limit, and can cut off the line with abnormal current before the outlet switch of the transformer substation is disconnected, thereby accurately isolating the fault position, ensuring quick and reliable disconnection of the fault line and facilitating subsequent fault investigation work;

4. the detection and control communication device comprises a control module, a communication module and a driving module, wherein the control module acquires current data in a line by means of a current sensor, and can send implemented circuit information to a host computer when controlling other components to work according to whether current exceeds limit or not, so that a attended staff can reliably and rapidly monitor the state of the transmission line and fault information, and a power grid maintenance staff can rapidly remove faults and ensure the operation of a power grid after rapidly and accurately mastering a fault place;

5. the detection and control communication device, the arc extinguishing device and the capacitive voltage dividing and energy taking device are arranged on the insulating mounting seat, and the falling part is not required to be replaced completely after the falling part acts, and only the falling part and the pushing mechanism part are required to be replaced, so that the use and maintenance cost is greatly reduced.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of an embodiment of the present invention along an axial direction of an insulating mount.

Fig. 3 is a schematic connection diagram of a vacuum arc extinguishing device and a pushing mechanism in an embodiment of the present invention.

Fig. 4 is a schematic diagram showing connection between the drop member and the pushing mechanism in the embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating installation of a reset handle on a vacuum arc extinguishing device according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of the working principle module of the present invention.

In the above figures: 1. an insulating mounting base; 2. arc extinguishing device; 3. a drop member; 4. a detection and control communication device; 5. capacitive voltage dividing and energy taking device; 11. a wire inlet binding post; 12. a mounting bracket; 21. a vacuum tube; 22. a vacuum tube static contact; 23. a vacuum tube moving contact; 24. a transmission push rod; 25. a bearing; 26. driving the push rod; 27. an external stationary contact; 28. a reset handle; 31. a conductive contact; 32. a clamping seat; 33. a clamping piece; 34. a cylinder; 35. a gas generator; 36. a piston push rod; 37. a wire; 38. a pressure spring; 41. outgoing line binding posts; 51. a high voltage capacitor; 52. a low voltage capacitor; 53. an isolation transformer; 261. a connecting sheet; 271. a chute; 281. a pull ring; 282. a strip-shaped connecting groove.

Detailed Description

The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1, the embodiment of the invention provides a drop-out quick-break switch with capacitive energy taking, which comprises an insulating mounting seat 1, an arc extinguishing device 2 and a drop-out piece 3 which are sequentially connected in series, and further comprises a capacitive voltage dividing energy taking device 5 and a detection control communication device 4 which are arranged corresponding to a circuit, wherein the capacitive voltage dividing energy taking device 5 is connected with the circuit to take electricity in a voltage mutual inductance way and supply power for the detection control communication device 4, the detection control communication device 4 comprises a control module, a communication module and a driving module, the control module detects a current value and sends or does not send a signal to the driving module according to whether the current exceeds limit, one side of the drop-out piece 3 is also provided with a pushing mechanism which is correspondingly arranged, when the pushing mechanism works, the arc extinguishing device 2 is controlled to break the circuit, then the drop-out piece 3 and the arc extinguishing device 2 form a visual breakpoint, and fault current is further cut off; the communication module is in communication connection with a master station or other man-machine interaction equipment, and is used for uploading data information or receiving remote control instructions.

As shown in fig. 2, in this embodiment, the insulating mounting base 1 is a vertically arranged column structure, and is internally provided with a conductive column, and is externally coated with an insulating material. The arc extinguishing device 2 is of a columnar structure horizontally arranged at the top end of the insulating mounting seat 1, the falling piece 3 is vertically arranged parallel to the insulating mounting seat 1, and two ends of the arc extinguishing device 2 are respectively connected with the insulating mounting seat 1 and one end of the falling piece 3; so that the insulating mounting base 1, the arc extinguishing device 2 and the falling piece 3 surround a semi-closed structure forming a bottom opening. The detection and control communication device 4 is arranged at the bottom of the insulating mounting seat 1, and the capacitive voltage dividing and energy taking device 5 is arranged inside an area surrounded by the insulating mounting seat 1, the arc extinguishing device 2, the falling part 3 and the detection and control communication device 4 and extends out of an opening at the bottom of the surrounding area to be connected with the detection and control communication device 4.

The side surface of the insulating mounting seat 1 extends outwards to form an incoming wire binding post 11, and the incoming wire binding post 11 penetrates through an insulating material on the outer side of the insulating mounting seat 1 to be connected with an internal conductive post. The insulating mounting seat 1, the arc extinguishing device 2 and the falling part 3 are sequentially connected in series to form a circuit, the tail end of the falling part 3 respectively penetrates through the capacitive voltage division energy taking device 5 and the detection and control communication device 4 through the lead 37, and finally is connected to an outgoing terminal 41 arranged at the bottom of the detection and control communication device 4, so that a complete circuit is formed. Meanwhile, the capacitive voltage dividing and energy taking device 5 and the detection and control communication device 4 are respectively provided with a capacitive energy taking device and a current sensing device corresponding to the part penetrated by the lead 37, and are used for energy taking and current detection. In addition, the outside of insulating mount pad 1 top still is provided with the installing support 12 that stretches out towards keeping away from arc extinguishing device 2 one side, is equipped with a plurality of connecting holes on the installing support 12 for install fixedly with the wire pole cooperation, thereby with this device whole fixed.

In a specific scheme, the capacitive voltage division energy-taking device 5 comprises an energy-taking module and an electricity-charging protection module, the energy-taking module comprises a high-voltage capacitor 51 and a low-voltage capacitor 52, voltage mutual inductance is realized, electricity is taken, the electricity-charging protection module is an isolation transformer 53, the isolation transformer 53 is respectively connected with the energy-taking module and the detection and control communication device 4, and equipment is protected while power is supplied.

Further, the detection and control communication device 4 further comprises a current sensor and an AD converter, wherein the current sensor is matched with the circuit to obtain a current value, the AD converter converts a current signal output by the current sensor into a digital signal, and then the digital signal is input into the control module, and the control module analyzes the data and monitors the line current in real time. The control module is MCU, belongs to micro chip structure, so can process data and control the operation of other equipment by oneself. The communication module may be a radio or WiFi device to communicate with other remote master devices, transmit data or receive operational signals. In addition, the control module is also provided with a high-frequency signal generator, and the control module outputs a control signal and then outputs an excitation signal to the driving module through the signal generator so that the driving module starts to work. Specifically, the driving module is a resonant power amplifier and comprises a transmitting coil and a receiving coil which are adjacently arranged, and the resonance of an alternating electromagnetic field in the transmitting coil and the receiving coil is utilized to enable the receiving coil to generate voltage, so that energy transfer is completed, and electric energy received in the receiving coil is transmitted to the pushing mechanism to enable the pushing mechanism to start working.

The pushing mechanism comprises a cylinder 34 and a gas generator 35 arranged in the cylinder 34, one end of the cylinder 34 is provided with a piston push rod 36, and the gas generator 35 increases the air pressure in the cylinder 34 to drive the piston push rod 36 to move outwards. Specifically, in the present embodiment, the gas generator 35 in the pushing mechanism includes two oppositely disposed discharge electrodes and a rapid-fire powder disposed between the discharge electrodes, and when the driving module transmits electric energy to the discharge electrodes by using the transmitting coil and the receiving coil, an electric spark is generated between the two discharge electrodes, and the rapid-fire powder is ignited, and rapidly burns to generate a large amount of gas, instantaneously increases the gas pressure in the cylinder 34, and drives the piston push rod 36 to rapidly move outwards.

As shown in fig. 3, the arc extinguishing device 2 is a vacuum arc extinguishing device 2, and comprises a vacuum tube 21, a vacuum tube fixed contact 22 and a vacuum tube moving contact 23 which are arranged in the vacuum tube 21, wherein the vacuum tube moving contact 23 is positioned at one end close to the falling piece 3; the outer end of the vacuum tube moving contact 23 is also coaxially connected with a transmission push rod 24, a bearing 25 is arranged on the side surface of the transmission push rod 24 along the radial direction, the outer end of the piston push rod 36 is coaxially connected with a driving push rod 26, wherein the transmission push rod 24, the bearing 25 and the driving push rod 26 are perpendicular to each other, the driving push rod 26 is abutted to the bearing 25, a chute 271 is arranged on the driving push rod 26, the chute 271 gradually inclines inwards along one end facing the bearing 25, inwards concave bayonets are adjacently arranged on one side, close to the piston push rod 36, of the chute 271, and the depth of each bayonet is smaller than the inwards concave depth of the chute 271; when the piston push rod 36 does not move outwards and the vacuum tube fixed contact 22 and the vacuum tube movable contact 23 are in normal contact, the bearing 25 is positioned at the inner bottom of the chute 271, and when the piston push rod 36 moves outwards with the driving push rod 26, the inclined surface of the chute 271 drives the bearing 25 and the driving push rod 24 to move towards one side of the falling piece 3, so that the vacuum tube movable contact 23 is separated from the vacuum tube fixed contact 22, and a circuit is disconnected.

As shown in fig. 5, at the same time, the vacuum arc-extinguishing device 2 further comprises a reset handle 28, one end of the reset handle 28 is located outside the vacuum arc-extinguishing device 2 and provided with a pull ring 281, the other end of the reset handle extends into the vacuum tube 21 through the housing, and the reset handle 28 is rotatably connected with the housing part of the vacuum arc-extinguishing device 2 so as to rotate on a vertical plane perpendicular to the axis of the vacuum tube 21. The reset handle 28 is provided with a strip-shaped connecting groove 282 at one end inside the vacuum tube 21, the end of the driving push rod 26 at one end inside the vacuum arc extinguishing device 2 is provided with a connecting sheet 261, and the strip-shaped connecting groove 282 is in sliding connection with the connecting sheet 261, so that the reset handle 28 can rotate along with the driving push rod 26 when the driving push rod 24 and the moving contact are driven to move upwards. In the above state, if the reset handle 28 is pulled by a person through the pull ring 281 to rotate in the opposite direction, the movable contact is reset, and the vacuum interrupter 2 is returned to the on state.

As shown in fig. 4, an external static contact 27 is arranged at one end of the arc extinguishing device 2, which is close to the falling part 3, a conductive contact 31 is correspondingly arranged on the falling part 3, the falling part 3 and a piston push rod 36 are arranged in parallel, an annular clamping seat 32 is sleeved outside the falling part 3, a clamping piece 33 is arranged between the clamping seat 32 and the outer wall of the falling part 3, and a connecting rod is arranged between the clamping seat 32 and the piston push rod 36 for fixing; when the piston push rod 36 moves outwards, the clamping seat 32 moves relative to the falling piece 3, so that the clamping piece 33 is extruded and falls off, at the moment, the falling piece 3 and the clamping seat 32 lose fastening, the falling piece 3 moves downwards under the gravity, and the conductive contact 31 is separated from the external fixed contact 27, so that a visual breakpoint is formed. Further preferably, the clamping member 33 between the clamping seat 32 and the outer wall of the falling member 3 is a steel ball, and the clamping seat 32 is made of plastic material, has a certain elasticity, can still be clamped between the clamping seat 32 and the falling member 3 when the diameter of the steel ball is slightly larger than the distance between the clamping seat 32 and the outer wall of the falling member 3, and can realize the relative fixation of the clamping seat 32 and the falling member 3 due to the extrusion of two sides. When the clamping seat 32 follows the piston push rod 36 to rapidly move upwards under the action of high-pressure gas in the air cylinder 34, the falling piece 3 is abutted with the vacuum arc extinguishing device 2 at the moment and cannot move along with the vacuum arc extinguishing device, so that relative displacement occurs between the clamping seat 32 and the falling piece 3, the steel balls move out of a gap between the clamping seat 32 and the falling piece 3, and accordingly the falling piece 3 naturally falls under the action of gravity due to the fact that the clamping seat 32 and the falling piece 3 lose fixation.

As the supplement of falling 3 gravity whereabouts, fall 3 inside is equipped with wire 37, wire 37 one end and conductive contact 31 fixed connection, the other end stretches out and falls 3 outsides and buckle the back fixed setting, and wire 37 is located the inboard of falling 3 outside bending section and is equipped with pressure spring 38, and pressure spring 38 exerts thrust to wire 37 bending section for wire 37 pulls conductive contact 31 and moves towards the direction of keeping away from outside stationary contact 27.

The working principle of the invention is as follows:

as shown in fig. 6, first, capacitive voltage division and energy taking is used for supplying power to the whole detection, communication and driving module. The power-on protection module outputs a protection signal for a period of time when the system is powered on, and is used for avoiding exciting current generated when a line is powered on. The AD converter converts the current signal output by the current sensor into a digital signal, and inputs the digital signal to the control module. The control module synthesizes various criteria and monitors the line current in real time. When a fault occurs, the line current exceeds a set action fixed value, and the control module outputs a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal for providing an excitation signal for the driving module. The driving module is a resonant power amplifier and emits driving energy from the antenna. The pushing mechanism is provided with an antenna and a high-frequency rectifying, filtering and voltage stabilizing circuit, receives driving energy through the antenna, drives the pushing mechanism, enables the vacuum arc extinguishing device 2 to act, rapidly breaks a fault line, then drops a quick breaker to form an obvious breakpoint, and achieves the purpose of cutting off fault current. The communication module can communicate with a master station or specific equipment and upload the opening and closing states of the quick breaker; uploading line states such as line current; receiving an instruction, remotely controlling the quick breaker to open and the like.

In order to reduce the weight of the conductive piece, the invention transfers the modules such as the detection control device, the vacuum arc extinguishing device 2 and the like to the mounting seat, and only the pushing mechanism and the conductive body mechanism are reserved on the conductive piece. The detection control device is not electrically connected with the pushing mechanism, and in order to drive the pushing mechanism, a wireless energy transmission device is designed, and the driving energy is wirelessly transmitted by utilizing a wireless electric energy transmission technology. When a fault occurs, the line current exceeds a set action fixed value, and the control module synthesizes various criteria and outputs a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal for providing an excitation signal for the driving module. The driving module is a resonant power amplifier and emits driving energy from the antenna. When the resonance frequency of the frequency selection loop of the driving module is the same as the frequency of the excitation signal, the power amplifier resonates, and the voltage and the current in the coil reach the maximum value, so that the maximum alternating electromagnetic field is generated. The receiving coil is closer to the transmitting coil, an induced voltage will be generated in the receiving coil, resonance will be generated when the resonant frequency of the receiving coil loop is the same as the transmitting frequency, and the voltage reaches a maximum. Through high-frequency rectification and filtering, and through a voltage stabilizing circuit, a driving signal is output to drive the pushing mechanism to act. Therefore, the energy transmission is low in delay, the delay is less than 500ms, the control end and the driving end are isolated, the insulation performance is excellent, the size is small, and the structural arrangement is convenient.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims (10)

1. A drop-out quick-break switch for capacitor energy taking is characterized in that: the device comprises an insulating mounting seat, an arc extinguishing device and a falling part which are sequentially connected in series, and further comprises a capacitive voltage-dividing energy-taking device and a detection and control communication device, wherein the capacitive voltage-dividing energy-taking device and the detection and control communication device are arranged corresponding to a circuit, the capacitive voltage-dividing energy-taking device is connected with the circuit to take electricity in a voltage-mutual inductance mode and supply power for the detection and control communication device, the detection and control communication device comprises a control module, a communication module and a driving module, the control module detects a current value and sends or does not send a signal to the driving module according to whether the current exceeds limit, a pushing mechanism is correspondingly arranged on one side of the falling part, and the pushing mechanism firstly controls the arc extinguishing device to break the circuit when working, then enables the falling part and the arc extinguishing device to form a visual breakpoint, and further cuts off fault current; the communication module is in communication connection with a master station or other man-machine interaction equipment, and is used for uploading data information or receiving remote control instructions.

2. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the insulating mounting seat, the arc extinguishing device and the falling piece are all of columnar structures, the insulating mounting seat and the falling piece are arranged in parallel, and two ends of the arc extinguishing device are respectively connected with one ends of the insulating mounting seat and the falling piece; the detection and control communication device is arranged at one end of the insulating mounting seat, which is far away from the arc extinguishing device, and the capacitive voltage dividing and energy taking device is arranged in an area surrounded by the insulating mounting seat, the arc extinguishing device, the falling part and the detection and control communication device.

3. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the capacitive voltage division energy-taking device comprises an energy-taking module and an electricity-taking protection module, wherein the energy-taking module comprises a high-voltage capacitor and a low-voltage capacitor, voltage mutual inductance is realized, electricity is taken, and the electricity-taking protection module is respectively connected with the energy-taking module and the detection and control communication device, so that equipment is protected while power is supplied.

4. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the detection and control communication device also comprises a current sensor and an AD converter, wherein the current sensor is matched with the circuit to acquire a current value, the AD converter converts a current signal output by the current sensor into a digital signal and then inputs the digital signal into the control module, and the control module analyzes the data and monitors the line current in real time; one end of the falling part, far away from the arc extinguishing device, is connected to the detection and control communication device through a conductor, the conductor penetrates through the detection and control communication device, an outgoing terminal for connecting a line outgoing line is arranged outside the detection and control communication device, and a current sensor inside the detection and control communication device acquires a current value through a measuring coil surrounding the conductor.

5. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the control module is also provided with a signal generator, and outputs a control signal, and then outputs an excitation signal to the driving module through the signal generator, so that the driving module starts to work.

6. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the driving module is a resonant power amplifier and comprises a transmitting coil and a receiving coil which are adjacently arranged, and the resonance of an alternating electromagnetic field in the transmitting coil and the receiving coil is utilized to enable the receiving coil to generate voltage, so that energy transfer is completed, and electric energy received in the receiving coil is transmitted to the pushing mechanism to enable the pushing mechanism to start working.

7. A capacitive energy-capturing drop-out quick disconnect switch as defined in claim 1, wherein: the pushing mechanism comprises a cylinder and a gas generator arranged in the cylinder, wherein a piston push rod is arranged at one end of the cylinder, and the piston push rod is driven to move outwards by increasing air pressure in the cylinder through the gas generator.

8. The capacitive energy-capturing drop-out quick disconnect switch of claim 7, wherein: the arc extinguishing device is a vacuum arc extinguishing device and comprises a vacuum tube, a vacuum tube fixed contact and a vacuum tube moving contact which are arranged in the vacuum tube, wherein the vacuum tube moving contact is positioned at one end close to the falling piece; the outer end of the vacuum tube moving contact is also coaxially connected with a transmission push rod, a bearing is arranged on the side surface of the transmission push rod along the radial direction, the outer end of the piston push rod is coaxially connected with a driving push rod, the transmission push rod, the bearing and the driving push rod are perpendicular to each other, the driving push rod is abutted to the bearing, a chute is arranged on the driving push rod, the chute is gradually concaved and inclined along one end facing the bearing, a concave bayonet is adjacently arranged on one side of the chute, close to the piston push rod, and the depth of the bayonet is smaller than the concave depth of the chute; when the piston push rod does not move outwards, and the vacuum tube fixed contact and the vacuum tube movable contact are in normal contact, the bearing is positioned at the bottom in the chute, and when the piston push rod drives the push rod to move outwards, the inclined surface of the chute drives the bearing and the transmission push rod to move towards one side of the falling piece, so that the vacuum tube movable contact is separated from the vacuum tube fixed contact, and a circuit is disconnected; the driving push rod is located the one end of vacuum arc-extinguishing device and still is equipped with the connection piece, and the vacuum arc-extinguishing device outside is equipped with reset handle, reset handle perpendicular to vacuum tube rotates to be connected on vacuum arc-extinguishing device's casing, and reset handle one end is located vacuum arc-extinguishing device outside and is equipped with the pull ring, and the other end is located vacuum arc-extinguishing device inside and is equipped with the bar spread groove, sliding connection between connection piece and the bar spread groove.

9. The capacitive energy-capturing drop-out quick disconnect switch of claim 7, wherein: the arc extinguishing device is provided with an external static contact near one end of the falling part, the falling part is correspondingly provided with a conductive contact, the falling part and the piston push rod are arranged in parallel, an annular clamping seat is sleeved outside the falling part, a clamping part is arranged between the clamping seat and the outer wall of the falling part, and a connecting rod is arranged between the clamping seat and the piston push rod for fixing; when the piston push rod outwards moves, the clamping seat moves relative to the falling piece, so that the clamping piece is extruded and falls off, at the moment, the falling piece and the clamping seat are fastened, the falling piece moves downwards under the gravity, and the conductive contact is separated from the external static contact, so that a visual breakpoint is formed.

10. The capacitive energy-capturing drop-out quick disconnect switch of claim 9, wherein: the inside wire that is equipped with of piece falls, wire one end and conductive contact fixed connection, the other end stretches out the outside of falling the piece and buckles the back fixed setting, and the wire is located the inboard of falling the outside bending section of piece and is equipped with the pressure spring, and the pressure spring exerts thrust to the wire bending section for the conductive contact is moved towards the direction of keeping away from outside stationary contact to the wire pulling.

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