A new type of drop-type quick-breaker

Abstract

The present invention relates to a drop-type quick-breaker, comprising a mounting seat, a vacuum arc extinguishing device, a detection and control device, and a conductive device; the vacuum arc extinguishing device comprises a vacuum tube, a static contact and a moving contact arranged in the vacuum tube, and a traction mechanism for controlling the disconnection and resetting of the moving contact; the conductive device comprises a conductor mechanism and a pushing mechanism fixed on the conductor mechanism, the lower end of the conductor mechanism is rotatably mounted on the bottom of the mounting seat, the upper end of the conductor mechanism is clamped on the conductive static contact on the mounting seat, the conductor mechanism comprises a conductive line unit and a drop control unit, the pushing mechanism can drive the traction mechanism to drive the moving contact to separate from the static contact; the pushing mechanism drives the traction mechanism and drives the drop control unit at the same time to realize the drop of the conductor mechanism. The drop-type quick-breaker of the present invention can quickly, accurately and reliably cut off the faulty line, prevent the failure of closing and reclosing of the outgoing line switch of the substation, and enable the normal power supply of the fault-free line.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breaker devices, and in particular relates to a novel drop-type quick-breaker. Background Art

[0002] At present, the installation of drop-out fuses as short-circuit protection switches in medium and low voltage distribution lines and distribution transformers can reduce the scope of power outages. Because it has an obvious disconnection point and has the function of an isolating switch, it creates a safe working environment for the maintenance section lines and equipment and improves the safety of maintenance personnel. It is installed on the distribution transformer and can be used as the main protection of the distribution transformer. It is widely used in medium and low voltage distribution lines and distribution transformers.

[0003] The working principle of the drop-out fuse is that the moving contacts at both ends of the fuse tube are fastened by the fuse (melt). After the upper moving contact is pushed into the protruding part of the "duckbill", the upper static contact made of phosphor copper sheet etc. presses against the upper moving contact, so the fuse tube is firmly stuck in the "duckbill". When the short-circuit current passes through the fuse and melts it, an arc is generated, and the copper paper tube lined in the fuse tube generates a large amount of gas under the action of the arc. Because the upper end of the fuse tube is sealed, the gas sprays to the lower end and blows out the arc. As the fuse is blown, the upper and lower moving contacts of the fuse tube lose the tightening force of the fuse. Under the action of the fuse tube's own gravity and the upper and lower static contact springs, the fuse tube falls rapidly, disconnecting the circuit and cutting off the faulty section of the line or the faulty equipment.

[0004] The following problems exist in the use of current drop-out fuses:

[0005] (1) When a short circuit occurs in the downstream equipment, it takes a long time for the fuse to break the arc. There is a great possibility that the fuse cannot be blown before the substation outgoing switch cuts off the fault current, resulting in the failure of the drop-out fuse to properly isolate the fault point. When the line is reclosed, the faulty equipment short-circuits again, causing the line reclosing to fail and the entire line to be out of power.

[0006] (2) Affected by the arc extinguishing medium and the gas-producing material of the inner wall of the melting tube, the gas production is small and the rate is low. When the arc is generated, the arc cannot be effectively blown and cooled, resulting in poor arc extinguishing ability.

[0007] (3) Drop-out fuses are generally installed outdoors. Affected by the natural environment of wind and rain, the arc-extinguishing tube inside the fuse tube is easily affected by moisture and expands, resulting in a reduction in the inner diameter or blockage. When a fault occurs, the fuse burns out, but due to the reduction in the inner diameter of the arc-extinguishing tube or blockage, the blocked part will clamp the fuse connection wire that has been blown, causing the fuse tube to remain in its original state for a long time when the fuse blows and cannot fall quickly. The arc is not cut off in the fuse tube, and eventually a continuous arc occurs, causing the fuse tube to burn out, resulting in the failure of line reclosing and a power outage on the entire line.

[0008] (4) It does not have communication function. When a line fault occurs, the power grid maintenance personnel cannot quickly find out the fault location and need a certain amount of time to troubleshoot the fault, thus prolonging the power outage caused by the line fault.

[0009] Therefore, it is necessary to take measures to cut off and isolate the fault point as quickly and reliably as possible, and at the same time, the power grid maintenance personnel can quickly and accurately grasp the fault location, eliminate the fault, and ensure the operation of the power grid. When a short circuit fault occurs, the fuse must reliably cut off the fault line before the substation outlet switch starts reclosing (usually 60ms), so that the substation outlet switch can close successfully, and the fault-free line can supply power normally without being affected by the fault line.

[0010] At present, through appropriate design, the way of fracture formation can be changed, so that the fault line can be disconnected reliably and quickly. Secondly, with the help of appropriate sensors, the abnormal current can be monitored faster and more accurately, and information can be sent to the power grid maintenance personnel in time to ensure that the operation of the power grid is mastered at any time. In order to disconnect the fault line within 60ms, there is a method of driving the cutter to move through the explosion of explosives, cutting the fuse to form a fracture, and cutting off the fault line. This method cuts the fuse in the air, and it is very easy to arc under high pressure environment. The arcing time is too long and the fault current cannot be completely cut off. At the same time, arcing will generate high temperature, explosion and open flame will occur, damaging equipment or causing fire. If the arc is to be extinguished in time, the technology is difficult and the cost is high.

[0011] In the prior art, the Chinese utility model patent with application number CN200820028343.9 discloses a high-current high-speed switch, a cutting and isolating device based on the principle of gunpowder explosion, which directly blows off the fuse through gunpowder to achieve the effect of rapid cutting. The above device uses the power of gunpowder explosion to directly blow off the fuse. Although this method is direct and fast, the gunpowder is installed on the guide bar. Under the influence of the electromagnetic field generated by the changing large current, it may cause the gunpowder to explode and cause malfunction. The guide bar will heat up under the action of the changing large current, which may also cause the gunpowder to explode and cause malfunction; making the entire device ineffective and causing serious losses. The above patent uses the method of blowing up and flipping the guide bar to form a fracture, which requires a large space, so the volume of the product is too large. In addition, after the switch explodes, the entire switch needs to be replaced, and the cost of use is too high.

[0012] In the prior art, a drop-type quick-breaker based on a vacuum arc extinguishing chamber is also disclosed, which can quickly (within 25ms), accurately and reliably cut off the fault line, but the power detection module and vacuum arc extinguishing device in this product are installed on the fuse tube, making the fuse carrier very heavy (about 6Kg). After the fault occurs, it is impossible to use an insulating rod on the ground to replace the fuse carrier. It is necessary to use a lifting device after power is cut off, which has low replacement efficiency and high labor costs. At the same time, the fuse carrier is disposable. After the action, it is necessary to replace a new fuse carrier, together with the detection module and the arc extinguishing device, which makes the cost of consumables very high. Summary of the invention

[0013] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and provide a new type of drop-type quick-breaker, which can quickly, accurately and reliably cut off the faulty line, effectively prevent the failure of closing and reclosing of the substation outgoing line switch, so that the fault-free line can supply power normally without being affected by the faulty line, improve the safety, reliability and economy of the device, and can detect the line current situation in real time and send information so that the power grid maintenance personnel can grasp the line current operation situation at any time.

[0014] To achieve the above object, the technical solution adopted by the present invention is:

[0015] A novel drop-type quick-breaker comprises a mounting seat, a vacuum arc extinguishing device, a detection and control device and a conductive device; the vacuum arc extinguishing device is horizontally mounted on the mounting seat, the conductive device is vertically mounted on the mounting seat, the vacuum arc extinguishing device comprises a vacuum tube, a stationary contact and a moving contact arranged in the vacuum tube, and a traction mechanism for controlling the disconnection and resetting of the moving contact;

[0016] The conductive member device includes a conductor mechanism and a pushing mechanism fixed on the conductor mechanism, the lower end of the conductor mechanism is rotatably mounted on the bottom of the mounting seat, the upper end of the conductor mechanism is clamped on the conductive static contact on the mounting seat, the conductor mechanism includes a conductive wire unit and a drop control unit, the pushing mechanism can drive the traction mechanism to drive the moving contact to separate from the static contact; the pushing mechanism drives the traction mechanism and the drop control unit at the same time to realize the drop of the conductor mechanism.

[0017] According to the above scheme, the traction mechanism includes a lateral shift rod and a vertical push rod, one end of the lateral shift rod is fixedly connected to the moving contact, the other end of the lateral shift rod is in tight contact with the compression spring, and the other end of the compression spring is pressed against the baffle installed on the mounting seat;

[0018] The vertical push rod is provided with a bayonet, and the lateral shift rod is provided with a clamping column matched with the bayonet. The vertical push rod can move upward under the action of external force, thereby pushing the clamping column to move horizontally to drive the moving contact to separate from the static contact.

[0019] According to the above scheme, the pushing mechanism includes a trigger unit and a piston unit; the piston unit includes a piston cylinder, a piston arranged in the piston cylinder, and a piston rod connected to the piston, the trigger unit includes a gas generator arranged under the piston and a current receiving coil for controlling the explosion of the gas generator, and the top of the piston rod extends out of the piston cylinder and contacts or is close to the bottom of the vertical push rod.

[0020] According to the above scheme, the drop control unit includes a connecting rod with one end fixed on the piston rod, a conductive head connected to the conductive wire unit, a drop retaining spring and a clamping steel ball. The other side of the connecting rod is a tubular structure and is sleeved on the outer shell of the conductor mechanism. The clamping steel ball passes through the outer shell of the conductor mechanism. One side of the steel ball presses the conductive head, and the other side presses the inner side of the tubular structure of the connecting rod. The conductive head is plugged into the conductive seat of the conductor mechanism, and the connecting rod can slide on the outer shell of the conductor mechanism; the conductive wire unit tightens the drop retaining spring.

[0021] According to the above scheme, the drop control unit includes a connecting rod fixed at one end on the piston rod, a drop retaining spring and a limit rod, the other side of the connecting rod is connected to the limit rod, one side of the drop retaining spring is provided with a through hole or a vertical boss, and the lower end of the limit rod passes through the through hole of the drop retaining spring or is sleeved on the vertical boss.

[0022] According to the above scheme, the drop control unit includes a connecting rod with one end fixed on the piston rod, a drop retaining spring and a limiting rope. One end of the limiting rope is fixed on the connecting rod, and the other end of the limiting rope is fixed on the bottom of the conductor mechanism. The limiting rope tightens the drop retaining spring.

[0023] According to the above scheme, the detection and control device includes a current sensor module, a power supply module, a control module, a drive module, a transmitting module, and a signal transmitting coil. The control module controls the drive module to transmit current to the signal transmitting coil. The signal transmitting coil contacts or approaches the current receiving coil of the driving mechanism, so that the current receiving coil generates an induced current.

[0024] According to the above scheme, the current sensor module includes a power taking coil and a measuring coil; the power supply end of the power taking coil is connected to the power transmission end of the power taking module, and the measuring coil transmits the electromagnetic signal to the control module.

[0025] According to the above solution, the detection and control device also includes a communication module that can communicate with external equipment and is used to transmit the fault signal to the external terminal.

[0026] According to the above scheme, a reset handle hinged to the vertical push rod is arranged above the vertical push rod, and the reset handle is installed on the vacuum arc extinguishing device through a pin shaft. The front end of the reset handle is a U-shaped groove, and a force transmission rod is horizontally arranged on the top of the vertical push rod, and the force transmission rod is located in the U-shaped groove of the reset handle.

[0027] The action process of this patent is as follows:

[0028] The detection and control device draws power from the power-taking coil to power itself, and measures the current / voltage of the main line through the measuring coil. When the main line current / voltage is abnormal, the control module sends a signal to the drive module, and the drive module transmits current to the signal transmitting coil. The induction coil of the pushing mechanism will generate an induced current, and power will be supplied to the gas generator to cause the gas generator to instantly generate a large amount of gas, thereby pushing the piston upward. The piston rod moves upward with the piston, pushing the vertical push rod upward, and the vertical push rod moves upward to push the card column to the right, and then the horizontal shift rod moves to the right, and the horizontal shift rod drives the moving contact to move, and the moving contact is separated from the static contact, so that the main line is powered off.

[0029] When the piston rod moves upward, it drives the connecting rod fixed on the piston rod to move upward. After the connecting rod is separated from the steel ball, the conductive head relaxes, the conductive wire also relaxes, and the conductor mechanism flips, thereby realizing physical visualization power off.

[0030] After replacing the conductive device and hanging it on the mounting base, pull the reset handle on the vacuum arc extinguishing device to push the vertical push rod downward so that the clamping column can move into the bayonet. The lateral shift rod moves to the left under the elastic force of the spring, and the clamping column moves into the bayonet of the vertical push rod, so that the moving contact makes electrical contact with the static contact.

[0031] Different drop control units have different action processes, but they all loosen the drop retaining spring through the movement of the connecting rod, thereby achieving the flipping of the conductor mechanism.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The new drop-type quick-breaker of the present invention is designed with a vacuum arc extinguishing device, which will not cause arcing when cutting off the fault current. The product cuts off the fault current reliably and quickly (within 25ms); the conductor mechanism also falls after the circuit is broken, and the operator can clearly see that the circuit is in a broken state and perform maintenance operations safely;

[0034] 2. The new drop-type quick-breaker of the present invention is designed with a detachable conductive part device, which is light (about 2Kg). It is convenient to replace the conductive part after the protection action, and it can be conveniently operated on the ground with an insulating rod;

[0035] 3. The conductor mechanism of the present invention is a partial improvement on the drop unit of the traditional new drop-type quick breaker. When the connecting rod is separated from the steel ball, the steel ball no longer clamps the column conductive head, so that the conductive wire falls off, similar to the traditional new drop-type quick breaker fuse burning, the drop clamping spring is loosened, and then the conductor mechanism is flipped. Although the drop control unit structure is different, it is a partial improvement on the drop unit of the traditional new drop-type quick breaker. The traditional fuse is replaced with a limit rope or a limit rod. The limit rope is broken or the limit rod moves, so that the drop clamping spring is loosened, and then the conductor mechanism is flipped;

[0036] 4. One of the drop unit solutions of the patented conductor mechanism uses a steel ball to clamp the conductive wire head, which is reliable and simple in structure, and ensures that the conductive capacity of the movable wire head is improved;

[0037] 5. The new drop-type quick-breaker of the present invention is designed with a detection and control device, which can be installed on a mounting seat and can be reused, greatly reducing the use cost of the product;

[0038] 6. The detection and control device of the novel drop-type quick-breaker design of the present invention is equipped with a communication module and a communication function, which allows the power grid maintenance personnel to grasp the line current situation in real time and quickly locate the fault location when a fault occurs;

[0039] 7. The detection and control device of the new drop-type quick-breaker of the present invention has a self-powered function, and the driving mechanism does not require an external power supply, which is safe and reliable;

[0040] 8. The novel drop-type quick-breaker of the present invention utilizes wireless power transmission technology to separate the detection and control device of the product from the conductive part, thereby reducing the weight of the conductive part and making the drop-and-replace operation of the conductive part very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a three-dimensional structural schematic diagram of a new type of drop-type quick breaker;

[0042] Figure 2 for Figure 1 The schematic cross-sectional structure diagram of the novel drop-type quick-breaker is shown;

[0043] Figure 3 for Figure 2 An enlarged structural diagram of the vacuum arc extinguishing device and the traction mechanism assembly;

[0044] Figure 4 for Figure 3 A schematic diagram of the side view of the assembly of the central traction mechanism and the reset handle;

[0045] Figure 5 for Figure 1 An enlarged cross-sectional structural schematic diagram of the conductive member device;

[0046] Figure 6 is a schematic structural diagram of a second drop control unit of the present invention;

[0047] Figure 7 A schematic diagram of the structure of a third drop control unit of the present invention;

[0048] Figure 8 is a schematic structural diagram of a fourth drop control unit of the present invention;

[0049] Fig. 9 Another structural diagram of the vertical push rod and the lateral shift rod in the traction mechanism of the present invention;

[0050] Fig.10 for Figure 1 A schematic diagram of the control circuit structure of the detection control device;

[0051] In the figure: 1-mounting seat, 2-vacuum arc extinguishing device, 2.1-vacuum tube, 2.2-static contact, 2.3-moving contact, 2.4-traction mechanism, 2.41-lateral shift rod, 2.42-vertical push rod, 2.43-compression spring, 2.44-baffle, 2.45-bayonet, 2.46-card post, 3-detection control device, 3.1-current sensor module, 3.11-power supply coil, 3.12-measuring coil, 3.2-power supply module, 3.3-power-on protection module, 3.4-control module, 3.5-drive module, 3.6-signal transmitting coil, 3.7-communication module, 3.8 -AD converter, 3.9-high frequency signal generator, 4-conductive device, 4.1-pushing mechanism, 4.11-current receiving coil, 4.12-piston cylinder, 4.13-piston, 4.14-piston rod, 4.15-gas generator, 4.2-conductive mechanism, 4.21-conductive line unit, 4.22-base, 4.23-drop retaining spring, 4.30-limiting rope, 4.31-limiting rod, 4.32-locking piece, 4.33-flip rod, 4.34-pin shaft, 6-conductive head, 7-clamping steel ball, 5-reset handle, 8-connecting rod, 9-conductive static contact, 10-conductive seat. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below in conjunction with specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0053] like Figure 1 and Figure 2As shown, a new type of drop-out quick-breaker of the present invention comprises a mounting seat 1, a vacuum arc extinguishing device 2, a detection and control device 3 and a conductive member device 4; the vacuum arc extinguishing device 2 is horizontally mounted on the mounting seat 1, the conductive member device 4 is vertically mounted on the mounting seat 1, the vacuum arc extinguishing device 2 comprises a vacuum tube 2.1, a stationary contact 2.2 and a moving contact 2.3 arranged in the vacuum tube 2.1, and a traction mechanism 2.4 for controlling the disconnection and resetting of the moving contact 2.3;

[0054] The conductive member device 4 includes a conductive member mechanism 4.2 and a pushing mechanism 4.1 installed on the conductive member mechanism 4.2. The lower end of the conductive member mechanism 4.2 is rotatably mounted on the bottom of the mounting seat 1. The upper end of the conductive member mechanism 4.2 is clamped on the conductive static contact on the mounting seat 1. The conductive member mechanism 4.2 includes a conductive wire unit 4.21 and a drop control unit. The pushing mechanism 4.1 can drive the traction mechanism 2.4 to drive the movable contact 2.3 to separate from the static contact 2.2. The pushing mechanism 4.1 drives the traction mechanism 2.4 and drives the drop control unit at the same time to realize the drop of the conductive member mechanism 4.2.

[0055] like Figure 3 and Figure 4 As shown, the traction mechanism 2.4 includes a transverse shift rod 2.41 and a vertical push rod 2.42, one end of the transverse shift rod 2.41 is fixedly connected to the moving contact 2.3, and the other end of the transverse shift rod 2.41 is in tight contact with a compression spring 2.43, and the compression spring 2.43 is in tight contact with a baffle 2.44 installed on the mounting seat 1; preferably, the transverse shift rod 2.41 is a step rod, the large diameter end of the transverse shift rod 2.41 is fixedly connected to the moving contact 2.3, and the small diameter end of the transverse shift rod 2.41 is sleeved with a compression spring 2.43.

[0056] The vertical push rod 2.42 is provided with a bayonet 2.45, and the middle part of the lateral shift rod 2.41 is provided with a clamping column 2.46 that cooperates with the bayonet 2.45. The vertical push rod 2.42 can move upward under the action of external force, thereby pushing the clamping column 2.46 to move horizontally to drive the moving contact 2.3 to move out and separate from the static contact 2.2. A reset handle 5 hinged to the vertical push rod 2.42 is provided above the vertical push rod 2.42, and the reset handle 5 is installed on the vacuum arc extinguishing device 2 through a pin shaft. The front end of the reset handle is provided with a U-shaped groove, and a force transmission rod is provided on the vertical push rod. The force transmission rod is located in the U-shaped groove of the reset handle. The vertical push rod 2.42 can move downward to reset under the driving action of the reset handle 5.

[0057] like Figure 5As shown, the lower end of the conductor mechanism 4.2 is rotatably mounted on the lower part of the mounting seat 1, and the upper end of the conductor mechanism 4.2 is clamped on the conductive static contact 9 on the mounting seat 1. The conductor mechanism 4.2 includes a base 4.22, a conductive line unit 4.21 inserted into the base 4.22, and a drop control unit. The drop control unit includes a connecting rod 8 fixed at one end to the piston rod 4.14, a conductive head 6 connected to the conductive line unit, a clamping steel ball 7, and a drop clamp. Spring 4.23, the other side of the connecting rod 8 is a tubular structure and is sleeved on the outer shell of the conductor mechanism 4.2, the clamping steel ball 7 passes through the outer shell of the conductor mechanism 4.2, one side of the clamping steel ball 7 presses the conductive head 6 and the other side is pressed against the inner side of the tubular structure of the connecting rod 8, the conductive head 6 is plugged into the conductive seat 10 of the conductor mechanism, and the connecting rod 8 can slide on the outer shell of the conductor mechanism 4.2; the conductive wire unit 4.21 tightens the drop clamping spring 4.23.

[0058] The pushing mechanism 4.1 includes a trigger unit and a piston unit; the piston unit includes a piston cylinder 4.12, a piston 4.13 arranged in the piston cylinder 4.12, and a piston rod 4.14 connected to the piston 4.13, the trigger unit includes a gas generator 4.15 arranged below the piston and a current receiving coil 4.11 for controlling the explosion of the gas generator, the top of the piston rod 4.14 extends out of the piston cylinder 4.12 and contacts or approaches the bottom of the vertical push rod 2.42, the piston rod 4.14 is fixedly connected to the connecting rod 8 at the same time, and the pushing mechanism 4.1 is arranged on the conductor mechanism 4.2.

[0059] The piston rod 4.14 is an insulating structure. The middle part of the conductor mechanism 4.2 is a base 4.22. The push mechanism is mounted on the base 4.22 and is made of insulating material to prevent the push mechanism from being electrically connected and ensure the reliability of the push mechanism.

[0060] After receiving the driving signal, the pushing mechanism 4.1 moves quickly within 25ms, the piston rod 4.14 moves upward, pushing the vertical push rod 2.42 upward, and the moving contact 2.3 moves to the right under the action of the inclined surface of the bayonet 2.45 of the vertical push rod 2.42. The moving contact 2.3 is separated from the static contact 2.2, forming a fracture in the vacuum tube 2.1, cutting off the line current and extinguishing the arc. When the piston rod 4.14 moves upward, the unlocked conductive device falls, and the conductive device flips and falls without line current, and no arcing phenomenon will occur. After eliminating the fault and replacing a new conductive device, push the reset handle 5, the dynamic and static contacts in the vacuum tube 2.1 are closed under the action of the spring, and the circuit works normally. The action is fast, a vacuum fracture is formed within 2ms, and the conductive part will not generate an arc during the entire falling process; the structure is simple, the action is reliable, and the moving contact will not rebound; it can be reused, reducing the cost of use.

[0061] like Figure 6 As shown, it is a second type of drop control unit mechanism, the drop control unit includes a connecting rod 8 with one end fixed on the piston rod 4.14, a drop retaining spring 4.23 and a limit rope 4.30, one end of the limit rope 4.30 is fixed on the connecting rod 8, and the other end is fixed on the flip rod 4.33 at the bottom of the conductor mechanism through a locking member 4.32, the limit rope 4.30 tightens the drop retaining spring 4.23, and a break is provided on the limit rope 4.30. When the connecting rod 8 moves upward under the push of the piston rod, the limit rope 4.30 breaks (similar to the fuse breaking of a traditional drop circuit breaker), the drop retaining spring loses its function, and the conductive member device 4 falls around the pin 4.34. In the drop control unit using this method, the conductive wire unit 4.21 is directly connected to the conductive seat 10. Since the vacuum circuit breaker can disconnect the main line, the conductive wire unit 4.21 does not need to be disconnected from the conductive seat.

[0062] like Figure 7 As shown, it is a third type of drop control unit, which includes a connecting rod 8 with one end fixed on the piston rod 4.14, a drop retaining spring 4.23 and a limit rod 4.31, which are connected, and the lower ends of the drop retaining spring 4.23 and the limit rod 4.31 pass through the through hole of the drop retaining spring 4.23. When the connecting rod 8 moves upward under the push of the piston rod, thereby driving the limit rod 4.31 to move upward, the limit rod 4.31 is separated from the through hole of the drop retaining spring 4.23, the drop retaining spring loses its function, and the conductive member device 4 falls around the pin shaft 4.34. In the drop control unit using this method, the conductive wire unit 4.21 is directly connected to the conductive seat 10. Since the vacuum circuit breaker can disconnect the main line, the conductive wire unit 4.21 does not need to be disconnected from the conductive seat.

[0063] like Figure 8 As shown, it is the fourth type of drop control unit, which is Figure 7 Compared with the drop control unit shown in the figure, the difference is that the lower part of the limit rod 4.31 is tubular, one side of the drop retaining spring 4.23 is provided with a boss, and the lower part of the limit rod 4.31 is sleeved on the boss of the drop retaining spring 4.23.

[0064] like Fig.10As shown, the detection control device 3 includes a current sensor module 3.1, a power supply module 3.2, a power-on protection module 3.3, a control module 3.4, a drive module 3.5, a transmitter module 3.6, and a communication module 3.7 for transmitting a fault signal to an external terminal; the control module 3.4 controls the drive module 3.5 to transmit current to the signal transmitting coil, and the signal transmitting coil contacts or approaches the current receiving coil of the pushing mechanism 4.1, so that the current receiving coil generates an induced current. The control module 3.4 controls the drive module 3.5 to transmit current to the signal transmitting coil, and the signal transmitting coil contacts or approaches the current receiving coil of the pushing mechanism 4.1, so that the current receiving coil generates an induced current. An AD converter 3.8 is provided between the signal output end of the measuring coil 3.12 and the signal input end of the control module 3.4; a high-frequency signal generator 3.9 is provided between the control signal output end of the control module 3.4 and the control signal input end of the drive module 3.5. A transmitting coil is provided in the transmitting module 3.6, and the transmitting coil is connected to the receiving coil 4.11 through an antenna.

[0065] The current sensor module of the present invention integrates a special power-taking coil and a current measurement coil. The power-taking module uses a special power-taking coil to obtain energy from the transmission line to provide a stable working power supply and driving power supply for the system. The power-on protection module outputs a protection signal for a period of time when the system is powered on, which is used to avoid the excitation current generated when the line is powered on. The AD converter converts the current signal output by the current sensor into a digital signal and inputs it into the control module. The control module integrates various criteria to monitor the line current in real time. When a fault occurs, the line current exceeds the set action value, and the module outputs a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal to provide an excitation signal for the drive module. The drive module is a resonant power amplifier that emits the driving energy from the antenna. The driving mechanism on the conductive part is equipped with an antenna and a high-frequency rectification, filtering and voltage stabilization circuit. The driving energy is received through the antenna, and the driving mechanism is driven to activate the vacuum arc extinguishing device, quickly disconnect the fault line, and then the quick breaker falls to form an obvious breakpoint, thereby achieving the purpose of cutting off the fault current. The communication module can communicate with the main station or specific equipment, upload the opening and closing status of the quick-breaker; upload line status such as line current; receive instructions, remotely control the opening of the quick-breaker, etc.

[0066] In order to reduce the weight of the conductive part, the present invention transfers the detection control device, vacuum arc extinguishing device and other modules to the mounting seat, and only retains the driving mechanism and the conductor mechanism on the conductive part. There is no electrical connection between the detection control device and the driving mechanism. In order to drive the driving mechanism, a wireless energy transmission device is designed, which uses wireless power transmission technology to wirelessly transmit driving energy.

[0067] When a fault occurs, the line current exceeds the set action value, and the control module integrates various criteria to output a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal to provide an excitation signal for the drive module. The drive module is a resonant power amplifier that transmits the drive energy from the antenna.

[0068] When the resonant frequency of the drive module's frequency selection circuit is the same as the excitation signal frequency, the power amplifier resonates, and the voltage and current in the coil reach their maximum values, thereby generating the maximum alternating electromagnetic field. The receiving coil is close to the transmitting coil, and an induced voltage will be generated in the receiving coil. When the resonant frequency of the receiving coil circuit is the same as the transmitting frequency, resonance will occur, and the voltage reaches its maximum value. After high-frequency rectification and filtering, the drive signal is output through the voltage stabilization circuit to drive the push mechanism to move. In this way, the energy transmission has a low delay of less than 500ns, and the control end and the drive end are isolated, with excellent insulation performance, small size, and convenient structural layout.

[0069] The vertical push rod and the transverse push rod of the traction mechanism of the present invention can also be configured as follows: the transverse push rod is provided with a waist-round through hole, the vertical push rod passes through the waist-round through hole of the transverse push rod, the upper part of the vertical push rod is configured as a rod-shaped structure, and the area near the waist-round through hole of the transverse push rod is configured as an inclined surface structure, such as Fig. 9 shown.

[0070] The above are only specific embodiments of the present invention. It should be pointed out that the rest that are not described in detail are prior arts. Any changes or substitutions that can be easily thought of by any technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A new type of drop-out quick-breaker, comprising a mounting seat, a vacuum arc extinguishing device, a detection and control device and a conductive device, characterized in that: The vacuum arc extinguishing device is horizontally mounted on the mounting seat, and the conductive member device is vertically mounted on the mounting seat. The vacuum arc extinguishing device includes a vacuum tube, a stationary contact and a moving contact arranged in the vacuum tube, and a traction mechanism for controlling the disconnection and resetting of the moving contact; The conductive member device includes a conductive body mechanism and a pushing mechanism fixed on the conductive body mechanism, the lower end of the conductive body mechanism can be rotatably mounted on the bottom of the mounting seat, the upper end of the conductive body mechanism is clamped on the conductive static contact on the mounting seat, the conductive body mechanism includes a conductive wire unit and a drop control unit, the pushing mechanism can drive the traction mechanism to drive the moving contact to separate from the static contact; the pushing mechanism drives the traction mechanism and drives the drop control unit at the same time to realize the drop of the conductive body mechanism; the pushing mechanism includes a trigger unit and a piston unit; the piston unit includes a piston cylinder, a piston arranged in the piston cylinder, and a piston rod connected to the piston, the trigger unit includes a gas generator arranged under the piston and a current receiving coil for controlling the explosion of the gas generator, the top of the piston rod extends out of the piston cylinder and contacts or approaches the bottom of the vertical push rod; the detection control device includes a current sensor module, a power taking module, a control module, a driving module, a transmitting module, and a signal transmitting coil, the control module controls the driving module to transmit current to the signal transmitting coil, and the signal transmitting coil is connected to the current of the driving mechanism. The receiving coil contacts or approaches, so that the current receiving coil generates an induced current; the drop control unit includes a connecting rod with one end fixed on the piston rod, a conductive head connected to the conductive wire unit, a drop clamping spring and a clamping steel ball, the other side of the connecting rod is a tubular structure and is sleeved on the outer shell of the conductor mechanism, the clamping steel ball penetrates the outer shell of the conductor mechanism, one side of the clamping steel ball presses the conductive head, and the other side presses the inner side of the tubular structure of the connecting rod, the conductive head is plugged into the conductive seat of the conductor mechanism, and the connecting rod can slide on the outer shell of the conductor mechanism; The conductive wire unit tightens the drop retaining spring; or the drop control unit includes a connecting rod with one end fixed on the piston rod, a drop retaining spring and a limit rod, the other side of the connecting rod is connected to the limit rod, one side of the drop retaining spring is provided with a through hole or a vertical boss, the lower end of the limit rod passes through the through hole of the drop retaining spring or is sleeved on the vertical boss; or the drop control unit includes a connecting rod with one end fixed on the piston rod, a drop retaining spring and a limit rope, one end of the limit rope is fixed on the connecting rod, and the other end of the limit rope is fixed on the bottom of the conductor mechanism, and the limit rope tightens the drop retaining spring.

2. The novel drop-type quick-breaker according to claim 1 is characterized in that: The traction mechanism includes a transverse shift rod and a vertical push rod, one end of the transverse shift rod is fixedly connected to the moving contact, the other end of the transverse shift rod is in tight contact with a compression spring, and the other end of the compression spring is pressed against a baffle installed on the mounting seat; the vertical push rod is provided with a bayonet, and the transverse shift rod is provided with a clamping column that cooperates with the bayonet, and the vertical push rod can move upward under the action of external force, thereby pushing the clamping column to move horizontally and driving the moving contact to separate from the static contact.

3. The novel drop-type quick-breaker according to claim 1 is characterized in that: The current sensor module includes a power taking coil and a measuring coil; the power supply end of the power taking coil is connected to the power transmission end of the power taking module, and the measuring coil transmits the electromagnetic signal to the control module.

4. The novel drop-type quick-breaker according to claim 1 is characterized in that: The detection and control device also includes a communication module capable of communicating with external equipment, and is used for transmitting a fault signal to an external terminal.

5. The novel drop-type quick-breaker according to claim 2 is characterized in that: A reset handle hinged to the vertical push rod is arranged above the vertical push rod. The reset handle is installed on the vacuum arc extinguishing device through a pin shaft. The front end of the reset handle is a U-shaped groove. A force transmission rod is horizontally arranged on the top of the vertical push rod. The force transmission rod is located in the U-shaped groove of the reset handle.

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