CN112713068A

CN112713068A - Novel drop-out quick breaker

Info

Publication number: CN112713068A
Application number: CN202011597522.6A
Authority: CN
Inventors: 黄生华; 王国博; 贾云东; 丁建龙; 蔡昊; 许三详
Original assignee: Beijing Zhongdian Anzhi Technology Co ltd
Current assignee: Beijing Zhongdian Anzhi Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-27

Abstract

The invention relates to a drop-out quick breaker, which comprises a mounting seat, a vacuum arc-extinguishing device, a detection control device and a conductive piece device, wherein the vacuum arc-extinguishing device is arranged on the mounting seat; the vacuum arc extinguishing device comprises a vacuum tube, a static contact and a moving contact which are arranged in the vacuum tube, and a traction mechanism for controlling the moving contact to be disconnected and reset; the conductive piece device comprises a conductive body mechanism and a pushing mechanism fixed on the conductive body mechanism, the lower end of the conductive body mechanism is rotatably hung on the bottom of the mounting seat, the upper end of the conductive body mechanism is clamped on a conductive static contact on the mounting seat, the conductive body mechanism comprises a conductive wire unit and a drop control unit, and the pushing mechanism can drive the traction mechanism to drive the movable contact to be separated from the static contact; the pushing mechanism drives the traction mechanism and simultaneously drives the falling control unit to realize the falling of the conductor mechanism. The drop-out type quick breaker can quickly, accurately and reliably cut off a fault line, prevent the switching-on and reclosing failure of a substation outgoing line switch, and enable the fault-free line to normally supply power.

Description

Novel drop-out quick breaker

Technical Field

The invention belongs to the technical field of circuit breakers, and particularly relates to a novel drop-out quick breaker.

Background

At present, a drop-out fuse is installed in a medium-low voltage distribution line and a distribution transformer to serve as a short-circuit protection switch, the power failure range can be reduced, the drop-out fuse has an obvious disconnection point and has the function of an isolating switch, a safe operation environment is created for lines and equipment at an overhaul section, and the safety of overhaul personnel is improved. The protection circuit is installed on a distribution transformer, can be used as main protection of the distribution transformer, and is commonly used in medium and low voltage distribution lines and distribution transformers.

The drop-out fuse has the working principle that moving contacts at two ends of a fuse tube are tied tightly by means of a fuse wire (melt), and after the upper moving contact is pushed into a duckbill-shaped protruding part, an upper fixed contact made of phosphor copper sheets and the like is propped against the upper moving contact, so that the fuse tube is firmly clamped in the duckbill shape. When short-circuit current is blown out through the fuse wire, an electric arc is generated, and a copper paper tube lined in the fuse wire tube generates a large amount of gas under the action of the electric arc. Because the upper end of the fuse tube is sealed, the gas is sprayed out to the lower end to blow out the electric arc. As the fuse wire is fused, the upper and lower moving contacts of the fuse tube lose the fastening force of the fuse wire, and the fuse tube falls rapidly under the action of the gravity of the fuse tube and the spring pieces of the upper and lower static contacts, so that a circuit is disconnected, and a fault section line or fault equipment is cut off.

The current drop-out fuse has the following problems in use:

(1) when a short-circuit fault occurs in the rear-stage equipment, the time before the melt is switched off is long, and the situation that the melt cannot be fused before the fault current is cut off by the outgoing line switch of the transformer substation can be greatly caused, so that the fault point cannot be correctly isolated by the drop-out fuse, the fault equipment is short-circuited again when the circuit is reclosed, the circuit reclosing failure is caused, and the whole line is powered off.

(2) The arc extinguishing medium and the gas generating material on the inner wall of the melting tube influence the arc extinguishing medium, the gas generating amount is less, the speed is low, and the arc cannot be effectively blown and cooled when the arc is generated, so that the arc extinguishing capability is poor.

(3) The drop-out fuse is generally installed outdoors and is influenced by the wind and rain of the natural environment, an arc extinguishing pipe in a fusion pipe is easy to damp and expand, and the inner diameter is reduced or blocked. When a fault occurs, the fuse wire is blown, but because the inner diameter of the arc extinguishing pipe is reduced or the arc extinguishing pipe is blocked, the blocked part can clamp the blown fuse wire connecting lead, so that the fuse pipe still keeps the original state for a long time when the fuse wire is blown, the fuse pipe cannot fall off quickly, the electric arc is not cut off in the fuse pipe, and finally continuous electric arc occurs, so that the fuse pipe is burned out, the circuit reclosing failure is caused, and the whole line is powered off.

(4) The power grid fault diagnosis system does not have a communication function, and when a line fault occurs, a power grid maintenance worker cannot know the fault location quickly, and needs certain fault troubleshooting time, so that the power failure time caused by the line fault is prolonged.

Therefore, measures are needed to be taken so as to cut off and isolate fault points as quickly and reliably as possible, and meanwhile, power grid maintenance personnel quickly and accurately master fault points, remove faults and guarantee power grid operation. When a short-circuit fault occurs, the fuse reliably cuts off a fault line before the transformer substation outlet switch starts reclosing (usually 60ms), so that the transformer substation outlet switch is successfully closed, and a fault-free line can normally supply power and is not influenced by the fault line.

At present, a fracture forming mode can be changed through proper design, a fault line can be reliably and quickly disconnected, then the abnormity of current can be monitored more quickly and accurately by means of a proper sensor, information is sent to a power grid maintenance worker in time, and the power grid operation condition is guaranteed to be mastered at any time. In order to realize the disconnection of a fault line within 60ms, a conventional mode is that a cutting knife is pushed to move through explosive explosion, a fuse is cut to form a fracture, and the fault line is cut. The mode cuts off the fuse wire in the air, the arc is very easy to be drawn under the high-voltage environment, the arc burning time is too long, the fault current cannot be completely cut off, meanwhile, the arc drawing can generate high temperature, explosion and naked fire can occur, the equipment is damaged or fire disaster occurs, if the arc is to be timely extinguished, the technical difficulty is high, and the cost is high.

In the prior art, chinese utility model patent with application number CN200820028343.9 discloses a high-current high-speed switch, based on the isolating device that cuts off of the principle of gunpowder explosion, it directly blows the fuse wire through gunpowder, plays the effect of cutting off fast. The device adopts a mode of directly blasting off the fuse wire by the power of gunpowder explosion, the method is direct and rapid, however, the gunpowder is arranged on the guide bar, the gunpowder explosion can be caused under the influence of an electromagnetic field generated by the changed large current, the misoperation is caused, the guide bar can generate heat under the action of the changed large current, and the misoperation can be caused by the gunpowder explosion; the whole device is disabled, causing serious losses. The fracture is formed by the mode of exploding and turning the diversion row, the required space is large, and the volume of the product is overlarge. In addition, after the switch is exploded, the whole switch needs to be replaced, and the use cost is too high.

In the prior art, the drop-out quick-breaking device based on the vacuum arc-extinguishing chamber is further disclosed, a fault line can be quickly (within 25 ms), accurately and reliably cut off, but the power-taking detection module and the vacuum arc-extinguishing device in the product are both arranged on the fusion tube, so that the weight of a fuse carrier is very heavy (about 6Kg), after the fault action occurs, the fuse carrier cannot be operated on the ground by an insulating rod when being replaced, the fuse carrier needs to be powered off, the replacement efficiency is low, and the labor cost is high. Meanwhile, the carrier melt is disposable, after action, a new carrier melt needs to be replaced, and the arc extinguishing device is replaced together with the detection module, so that the consumable cost is very high.

Disclosure of Invention

The invention aims to solve the defects of the background technology, and provides a novel drop-out quick-break device which can quickly, accurately and reliably cut off a fault line, effectively prevent the failure of closing and reclosing of an outgoing line switch of a transformer substation, ensure that the fault-free line can normally supply power without being influenced by the fault line, improve the safety, reliability and economy of the device, detect the current condition of the line in real time, and send information to ensure that a power grid maintainer can master the current operation condition of the line at any time.

In order to achieve the purpose, the invention adopts the technical scheme that:

a novel drop-out quick breaker comprises a mounting seat, a vacuum arc extinguishing device, a detection control device and a conductive piece device; the vacuum arc extinguishing device is transversely arranged on the mounting seat, the conductive piece device is vertically arranged on the mounting seat, and the vacuum arc extinguishing device comprises a vacuum tube, a static contact and a moving contact which are arranged in the vacuum tube, and a traction mechanism for controlling the moving contact to be disconnected and reset;

the conductive piece device comprises a conductive body mechanism and a pushing mechanism fixed on the conductive body mechanism, the lower end of the conductive body mechanism is rotatably hung on the bottom of the mounting seat, the upper end of the conductive body mechanism is clamped on a conductive static contact on the mounting seat, the conductive body mechanism comprises a conductive wire unit and a drop control unit, and the pushing mechanism can drive a traction mechanism to drive the movable contact to be separated from the static contact; the pushing mechanism drives the traction mechanism and simultaneously drives the falling control unit to realize the falling of the conductor mechanism.

According to the scheme, the traction mechanism comprises a transverse moving rod and a vertical push rod, one end of the transverse moving rod is fixedly connected with the moving contact, the other end of the transverse moving rod is tightly contacted with a compression spring, and the other end of the compression spring is tightly pressed with a baffle arranged on the mounting seat;

the vertical push rod is provided with a bayonet, the transverse moving rod is provided with a clamping column matched with the bayonet, and the vertical push rod can move upwards under the action of external force so as to push the clamping column to transversely move to drive the moving contact to be separated from the static contact.

According to the scheme, the pushing mechanism comprises a triggering unit and a piston unit; the piston unit comprises a piston cylinder, a piston arranged in the piston cylinder and a piston rod connected with the piston, the trigger unit comprises a gas generator arranged below the piston and a current receiving coil for controlling the gas generator to explode, and the top of the piston rod extends out of the piston cylinder to be in contact with the bottom of the vertical push rod or close to the bottom of the vertical push rod.

According to the scheme, the falling control unit comprises a connecting rod, a conductive head, a falling clamp spring and a clamping steel ball, wherein one end of the connecting rod is fixed on the piston rod, the conductive head is connected with the conductive wire unit, the other side of the connecting rod is of a tubular structure and is sleeved on the shell of the conductive body mechanism, the clamping steel ball penetrates through the shell of the conductive body mechanism, one side of the steel ball compresses the conductive head, the other side of the steel ball compresses the inner side of the tubular structure of the connecting rod, the conductive head is inserted into a conductive seat of the conductive body mechanism, and the connecting rod can slide on the shell of the; the conductive wire unit is tightened and falls off the clamp spring.

According to the above scheme, fall the control unit and include that one end fixes the connecting rod on the piston rod, falls jump ring and gag lever post, the opposite side and the gag lever post of connecting rod are connected, the one side of falling the jump ring is equipped with through-hole or vertical boss, and the lower extreme of gag lever post passes the through-hole or the cover of falling the jump ring at vertical boss.

According to the scheme, the falling control unit comprises a connecting rod, a falling clamp spring and a limiting rope, wherein one end of the connecting rod is fixed on the piston rod, one end of the limiting rope is fixed on the connecting rod, the other end of the limiting rope is fixed on the bottom of the conductor mechanism, and the limiting rope is tightened to fall the falling clamp spring.

According to the scheme, the detection control device comprises a current sensor module, a power taking module, a control module, a driving module, a transmitting module and a signal transmitting coil, wherein the control module controls the driving module to transmit current to the signal transmitting coil, and the signal transmitting coil is in contact with or close to a current receiving coil of the pushing mechanism, so that the current receiving coil generates induced current.

According to the scheme, the current sensor module comprises a power taking coil and a measuring coil; the power supply end of the power taking coil is connected with the power transmission end of the power taking module, and the measuring coil transmits the electromagnetic signal to the control module.

According to the scheme, the detection control device further comprises a communication module capable of communicating with external equipment, and the communication module is used for transmitting the fault signal to an external terminal.

According to the scheme, the upper portion of the vertical push rod is provided with the reset handle hinged with the vertical push rod, the reset handle is installed on the vacuum arc-extinguishing device through the pin shaft, the front end of the reset handle is a U-shaped groove, the top of the vertical push rod is transversely provided with the dowel bar, and the dowel bar is located in the U-shaped groove of the reset handle.

The action process of this patent is as follows:

the detection control device obtains electricity through the electricity obtaining coil to supply power to the detection control device, meanwhile, the current/voltage condition of a main line is measured through the measuring coil, when the current/voltage of the main line is abnormal, the control module sends a signal to the driving module, the driving module transmits current to the signal transmitting coil, the induction coil of the pushing mechanism can generate induction current, power is supplied to the gas generator to enable the gas generator to instantly generate a large amount of gas, the piston is further pushed to move upwards, the piston rod moves upwards along with the piston to push the vertical push rod to move upwards, the vertical push rod moves upwards to push the clamping column to move rightwards, the transverse moving rod drives the moving contact to move, the moving contact is separated from the static contact, and the main line is.

When the piston rod moves upwards, the connecting rod fixed on the piston rod is driven to move upwards, after the connecting rod is separated from the steel ball, the conductive head is loosened, the conductive wire is loosened, and the conductive body mechanism is turned over, so that physical visualization power failure is realized.

The electric conduction piece device is replaced, after the electric conduction piece device is hung on the mounting seat, a reset handle on the vacuum arc extinguishing device is pulled, the vertical push rod is pushed to move downwards, the clamping column can move into the bayonet, the transverse moving rod moves leftwards under the elastic force of the spring, the clamping column moves into the bayonet of the vertical push rod, and the moving contact is in electric contact with the static contact.

Different fall control units, the action process is not completely the same, but all realize falling the jump ring through the removal of connecting rod and become flexible, and then realize the upset of electric conductor mechanism.

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

1. the novel drop-out quick breaker is provided with the vacuum arc extinguishing device, so that the arc discharge phenomenon cannot occur when the fault current is cut off, and the fault current is reliably and quickly cut off (within 25 ms) by a product; after the circuit is broken, the conductor mechanism also falls off, and an operator can clearly see that the circuit is in a broken state, so that the maintenance operation can be safely carried out;

2. the novel drop-out quick breaker is provided with a separable conductive piece device, the conductive piece is light (about 2Kg), the conductive piece is convenient to replace after protection, and the insulating rod can be conveniently operated on the ground;

3. the electric conductor mechanism is locally improved on a falling unit of the traditional novel falling-type quick-disconnect device, when a connecting rod is separated from a steel ball, the steel ball is not clamped with a column conducting head any more, so that a conducting wire falls off, the electric conductor mechanism is similar to a fuse wire of the traditional novel falling-type quick-disconnect device in that the fuse wire is blown, a falling clamp spring is loosened, and then the electric conductor mechanism is turned over;

4. one of the fall unit schemes of the conductor mechanism adopts the steel ball to clamp the conductor head, the separation is reliable, the structure is simple, and the improvement of the conductive capacity of the movable conductor head is ensured;

5. the novel drop-out quick breaker is provided with the detection control device, can be arranged on the mounting seat and can be repeatedly used, so that the use cost of the product is greatly reduced;

6. the detection control device designed by the novel drop-out quick breaker is provided with the communication module, has a communication function, can enable a power grid maintainer to master the line current condition in real time, and can quickly locate a fault place when a fault occurs;

7. the detection control device designed by the novel drop-out quick breaker has an automatic power-taking function, and a pushing mechanism does not need to be additionally provided with a power supply, so that the novel drop-out quick breaker is safe and reliable;

8. the novel drop-out quick breaker of the invention utilizes the wireless power transmission technology to separate the detection control device of the product from the conductive piece, thereby reducing the weight of the conductive piece and facilitating the drop-out replacement operation of the conductive piece.

Drawings

Fig. 1 is a schematic perspective view of a novel drop-out type quick-disconnect;

fig. 2 is a schematic cross-sectional structure view of the novel drop-out type quick-disconnect shown in fig. 1;

FIG. 3 is an enlarged schematic view of the vacuum arc extinguishing device of FIG. 2 assembled with a pulling mechanism;

FIG. 4 is a side elevational view of the draft mechanism and reset handle assembly of FIG. 3;

FIG. 5 is an enlarged cross-sectional view of the conductive device of FIG. 1;

fig. 6 is a schematic diagram of a second fall control unit according to the present invention;

figure 7 is a schematic of a third fall control unit according to the present invention;

figure 8 is a schematic diagram of a fourth fall control unit according to the present invention;

FIG. 9 is a schematic view of another embodiment of the vertical pushing rod and the horizontal moving rod of the towing mechanism of the present invention;

FIG. 10 is a schematic diagram of a control circuit of the detection control device in FIG. 1;

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-transverse moving rod, 2.42-vertical push rod, 2.43-compression spring, 2.44-baffle, 2.45-bayonet, 2.46-clamping column, 3-detection control device, 3.1-current sensor module, 3.11-electricity-taking coil, 3.12-measuring coil, 3.2-electricity-taking module, 3.3-power-on protection module, 3.4-control module, 3.5-driving module, 3.6-signal transmitting coil, 3.7-communication module, 3.8-AD converter, 3.9-high-frequency signal generator, 4-electric conduction piece device, 4.1-pushing mechanism, 4.11-current receiving coil, 4.12-piston cylinder, 4.7-communication module, 3.8-AD converter, 3.9-high-frequency signal generator, 4-piston cylinder device, 4.1-pushing mechanism, 4.13-piston, 4.14-piston rod, 4.15-gas generator, 4.2-conductor mechanism, 4.21-conductor unit, 4.22-base body, 4.23-drop clamp spring, 4.30-limiting rope, 4.31-limiting rod, 4.32-locking piece, 4.33-turnover rod, 4.34-pin shaft, 6-conducting head, 7-clamping steel ball, 5-reset handle, 8-connecting rod, 9-conducting static contact and 10-conducting seat.

Detailed Description

The present invention will be described in further detail with reference to specific examples to facilitate the clear understanding of the invention, but the present invention is not limited thereto.

As shown in fig. 1 and fig. 2, the novel drop-out type quick-break apparatus of the present invention includes a mounting base 1, a vacuum arc extinguishing device 2, a detection control device 3 and a conductive device 4; the vacuum arc extinguishing device 2 is transversely arranged on the mounting seat 1, the conductive piece device 4 is vertically arranged on the mounting seat 1, and the vacuum arc extinguishing device 2 comprises a vacuum tube 2.1, a static contact 2.2 and a moving contact 2.3 which are arranged in the vacuum tube 2.1, and a traction mechanism 2.4 for controlling the moving contact 2.3 to be disconnected and reset;

the conductive piece device 4 comprises a conductive body mechanism 4.2 and a pushing mechanism 4.1 arranged on the conductive body mechanism 4.2, the lower end of the conductive body mechanism 4.2 is rotatably hung on the bottom of the mounting seat 1, the upper end of the conductive body mechanism 4.2 is clamped on a conductive static contact on the mounting seat 1, the conductive body mechanism 4.2 comprises a conductive wire unit 4.21 and a drop control unit, and the pushing mechanism 4.1 can drive the pulling mechanism 2.4 to drive the moving contact 2.3 to be separated from the static contact 2.2; the pushing mechanism 4.1 drives the traction mechanism 2.4 and simultaneously drives the falling control unit to realize the falling of the conductor mechanism 4.2.

As shown in fig. 3 and 4, the traction mechanism 2.4 includes a lateral moving rod 2.41 and a vertical push rod 2.42, one end of the lateral moving rod 2.41 is fixedly connected with the movable contact 2.3, the other end of the lateral moving rod 2.41 is tightly contacted with a compression spring 2.43, and the compression spring 2.43 is tightly contacted with a baffle 2.44 installed on the installation base 1; preferably, the transverse moving rod 2.41 is a stepped rod, a large-diameter end of the transverse moving rod 2.41 is fixedly connected with the movable contact 2.3, and a small-diameter end of the transverse moving rod 2.41 is sleeved with a compression spring 2.43.

The vertical push rod 2.42 is provided with a bayonet 2.45, the middle part of the transverse moving rod 2.41 is provided with a clamping column 2.46 matched with the bayonet 2.45, and the vertical push rod 2.42 can move upwards under the action of external force, so that the clamping column 2.46 is pushed to move transversely to drive the moving contact 2.3 to move out and be separated from the static contact 2.2. The upper portion of the vertical push rod 2.42 is provided with a reset handle 5 hinged with the vertical push rod, the reset handle 5 is arranged on the vacuum arc-extinguishing device 2 through a pin shaft, a U-shaped groove is formed in the front end of the reset handle, a dowel bar is arranged on the vertical push rod and located in the U-shaped groove of the reset handle, and the vertical push rod 2.42 can move downwards to reset under the driving action of the reset handle 5.

As shown in fig. 5, the lower end of the conductor mechanism 4.2 is rotatably hung on the lower portion of the mounting base 1, the upper end of the conductor mechanism 4.2 is clamped on the conductive stationary contact 9 on the mounting base 1, the conductor mechanism 4.2 comprises a basal body 4.22, a conductive wire unit 4.21 arranged in the basal body 4.22 in a penetrating way and a drop control unit, the falling control unit comprises a connecting rod 8 with one end fixed on a piston rod 4.14, a conductive head 6 connected with the conductive wire unit, a clamping steel ball 7 and a falling clamp spring 4.23, the other side of the connecting rod 8 is of a tubular structure and is sleeved on the shell of the conductor mechanism 4.2, the clamping steel ball 7 penetrates through the shell of the conductor mechanism 4.2, one side of the clamping steel ball 7 compresses the other side of the conductive head 6 and compresses the inner side of the tubular structure of the connecting rod 8, the conductive head 6 is inserted on a conductive seat 10 of the conductor mechanism, and the connecting rod 8 can slide on the shell of the conductor mechanism 4.2; the conductive wire unit 4.21 is tightened and falls off the clamp spring 4.23.

The pushing mechanism 4.1 comprises a trigger unit and a piston unit; the piston unit comprises a piston cylinder 4.12, a piston 4.13 arranged in the piston cylinder 4.12 and a piston rod 4.14 connected with the piston 4.13, the trigger unit comprises a gas generator 4.15 arranged below the piston and a current receiving coil 4.11 for controlling the gas generator to explode, the top of the piston rod 4.14 extends out of the piston cylinder 4.12 to be contacted with the bottom of the vertical push rod 2.42 or to be close to the bottom of the vertical push rod 2.42, the piston rod 4.14 is fixedly connected with the connecting rod 8 at the same time, and the pushing mechanism 4.1 is arranged on the conductor mechanism 4.2.

The piston rod 4.14 is of an insulating structure, the middle part of the conductor mechanism 4.2 is a base body 4.22, the pushing mechanism is arranged on the base body 4.22, and the insulating material is adopted, so that the pushing mechanism can be prevented from being connected in series, and the reliability of the pushing mechanism is ensured.

After the pushing mechanism 4.1 receives the driving signal, the pushing mechanism rapidly moves within 25ms, the piston rod 4.14 moves upwards to push the vertical push rod 2.42 to move upwards, the moving contact 2.3 is driven to move rightwards under the action of the bayonet 2.45 inclined plane of the vertical push rod 2.42, the moving contact 2.3 is separated from the static contact 2.2, a fracture is formed in the vacuum tube 2.1, the line current is cut off, and the electric arc is extinguished. When the piston rod 4.14 moves upwards, the unlocking conductive piece device is opened and falls off, the conductive piece device turns over and falls off under the condition of no line current, and the arc discharge phenomenon cannot be generated. When the fault is eliminated and the new conducting device is replaced, the reset handle 5 is pushed, the moving 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 rapid, a vacuum fracture is formed within 2ms, and the electric arc cannot be generated in the whole falling process of the conductive piece; the structure is simple, the action is reliable, and the moving contact cannot rebound; can be repeatedly used, and the use cost is reduced.

As shown in fig. 6, the second fall control unit mechanism is a fall control unit mechanism, the fall control unit includes a connecting rod 8 with one end fixed on a piston rod 4.14, a fall clamp spring 4.23 and a limiting rope 4.30, one end of the limiting rope 4.30 is fixed on the connecting rod 8, the other end is fixed on a turnover rod 4.33 at the bottom of the conductor mechanism through a locking piece 4.32, the limiting rope 4.30 tightens the fall clamp spring 4.23, and a fracture is arranged on the limiting rope 4.30. When the connecting rod 8 moves upwards under the pushing of the piston rod, the limiting rope 4.30 is broken (similar to the fuse wire of the traditional drop circuit breaker), the drop clamp spring loses the function, and the conductive piece device 4 drops around the pin shaft 4.34. By adopting the falling control unit in the mode, the conductive wire unit 4.21 is directly connected with the conductive seat 10, and the vacuum circuit breaker can break a main line, so that the conductive wire unit 4.21 and the conductive seat do not need to be disconnected.

As shown in fig. 7, the third falling control unit comprises a connecting rod 8 with one end fixed on a piston rod 4.14, a falling clamp spring 4.23 and a limiting rod 4.31, and the falling clamp spring 4.23 and the limiting rod 4.31 are connected, and the lower end of the limiting rod 4.31 penetrates through a through hole of the falling clamp spring 4.23. When the connecting rod 8 is pushed by the piston rod to move upwards, the limiting rod 4.31 is driven to move upwards, the limiting rod 4.31 is separated from the through hole of the falling clamp spring 4.23, the falling clamp spring loses effect, and the conductive piece device 4 falls around the pin shaft 4.34. By adopting the falling control unit in the mode, the conductive wire unit 4.21 is directly connected with the conductive seat 10, and the vacuum circuit breaker can break a main line, so that the conductive wire unit 4.21 and the conductive seat do not need to be disconnected.

As shown in fig. 8, the fourth fall control unit is different from the fall control unit shown in fig. 7 in that the lower portion of the limit rod 4.31 is tubular, a boss is arranged on one side of the fall clamp spring 4.23, and the lower portion of the limit rod 4.31 is sleeved on the boss of the fall clamp spring 4.23.

As shown in fig. 10, the detection control device 3 includes a current sensor module 3.1, a power-taking module 3.2, a power-on protection module 3.3, a control module 3.4, a driving module 3.5, an emission 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 driving module 3.5 to transmit current to the signal transmitting coil, and the signal transmitting coil is contacted with or close to the current receiving coil of the pushing mechanism 4.1, so that the current receiving coil generates induced current. The control module 3.4 controls the driving module 3.5 to transmit current to the signal transmitting coil, and the signal transmitting coil is contacted with or close to the current receiving coil of the pushing mechanism 4.1, so that the current receiving coil generates induced current. An AD converter 3.8 is arranged 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 arranged between the control signal output end of the control module 3.4 and the control signal input end of the driving module 3.5. And a transmitting coil is arranged in the transmitting module 3.6, and the transmitting coil is connected with the receiving coil 4.11 through an antenna.

The current sensor module of the invention integrates a specially-made electricity taking coil and a current measuring coil. The electricity taking module obtains energy from the power transmission line by using a special electricity taking coil, and provides a stable working power supply and a 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, and the protection signal 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 integrates various criteria to monitor the line current in real time. When a fault occurs, the line current exceeds a set action fixed value, and the module outputs a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal and provide an excitation signal for the driving module. The driving module is a resonance power amplifier and transmits driving energy from the antenna. The pushing mechanism on the conductive piece 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 to act, quickly breaks a fault line, then the quick breaker falls off, an obvious breakpoint is formed, and the purpose of cutting off fault current is achieved. 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 and the like; receiving an instruction, remotely controlling the quick breaker to open the gate and the like.

In order to reduce the weight of the conductive piece, modules such as a detection control device, a vacuum arc-extinguishing device and the like are transferred to a mounting seat, and only a pushing mechanism and a conductive body mechanism are reserved on the conductive piece. The detection control device is not electrically connected with the pushing mechanism, a wireless energy transmission device is designed for driving the pushing mechanism, and driving energy is wirelessly transmitted by using a wireless electric energy transmission technology.

When a fault occurs, the line current exceeds a set action fixed value, and the control module integrates various criteria and outputs a control signal. The control signal enables the high-frequency signal generator to output a high-frequency signal and provide an excitation signal for the driving module. The driving module is a resonance power amplifier and transmits driving energy from the antenna.

When the resonant frequency of the frequency-selecting loop of the driving module is the same as the frequency of the exciting signal, the power amplifier resonates, and the voltage and the current in the coil reach the maximum value at the moment, so that the maximum alternating electromagnetic field is generated. When the resonance frequency of the receiving coil loop is the same as the transmitting frequency, resonance is generated, and the voltage reaches the maximum value. After high-frequency rectification and filtering, the driving signal is output through a voltage stabilizing circuit to drive the pushing mechanism to act. Therefore, the energy transmission is low in time delay, the time delay is less than 500ns, the control end and the driving end are isolated, the insulation performance is excellent, the size is small, and the structural arrangement is convenient.

The vertical push rod and the horizontal push rod of the traction mechanism can also be arranged as follows: the transverse push rod is provided with a waist circular through hole, the vertical push rod penetrates through the waist circular through hole of the transverse push rod, the upper part of the vertical push rod is arranged to be of a rod-shaped structure, and an area close to the waist circular through hole of the transverse push rod is arranged to be of an inclined plane structure, as shown in fig. 9.

The above description is only for the specific embodiments of the present invention, and it should be noted that the remaining detailed descriptions are related to the prior art, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a novel drop-out quick-disconnect ware, includes mount pad, vacuum arc control device, detection controlling means and electrically conductive device, its characterized in that: the vacuum arc extinguishing device is transversely arranged on the mounting seat, the conductive piece device is vertically arranged on the mounting seat, and the vacuum arc extinguishing device comprises a vacuum tube, a static contact and a moving contact which are arranged in the vacuum tube, and a traction mechanism for controlling the moving contact to be disconnected and reset;

2. The novel drop-out quick-disconnect device of claim 1, wherein: the traction mechanism comprises a transverse moving rod and a vertical push rod, one end of the transverse moving rod is fixedly connected with the moving contact, the other end of the transverse moving rod is tightly contacted with a compression spring, and the other end of the compression spring is tightly pressed with a baffle arranged on the mounting seat;

3. A novel drop-out quick-disconnect as claimed in claim 1 or 2, wherein: the pushing mechanism comprises a trigger unit and a piston unit; the piston unit comprises a piston cylinder, a piston arranged in the piston cylinder and a piston rod connected with the piston, the trigger unit comprises a gas generator arranged below the piston and a current receiving coil for controlling the gas generator to explode, and the top of the piston rod extends out of the piston cylinder to be in contact with the bottom of the vertical push rod or close to the bottom of the vertical push rod.

4. The novel drop-out quick-disconnect device of claim 3, wherein: the falling control unit comprises a connecting rod, a conductive head, a falling clamp spring and a clamping steel ball, wherein one end of the connecting rod is fixed on the piston rod, the conductive head is connected with the conductive wire unit, the other side of the connecting rod is of a tubular structure and is sleeved on the shell of the conductive body mechanism, the clamping steel ball penetrates through the shell of the conductive body mechanism, one side of the clamping steel ball compresses the conductive head, the other side of the clamping steel ball compresses the inner side of the tubular structure of the connecting rod, the conductive head is inserted into a conductive seat of the conductive body mechanism, and the connecting rod can slide on the shell of the; the conductive wire unit is tightened and falls off the clamp spring.

5. The novel drop-out quick-disconnect device of claim 3, wherein: the falling control unit comprises a connecting rod, a falling clamp spring and a limiting rod, wherein one end of the connecting rod is fixed on the piston rod, the other side of the connecting rod is connected with the limiting rod, a through hole or a vertical boss is arranged on one side of the falling clamp spring, and the lower end of the limiting rod penetrates through the through hole or the vertical boss of the falling clamp spring.

6. The novel drop-out quick-disconnect device of claim 3, wherein: the falling control unit comprises a connecting rod, a falling clamp spring and a limiting rope, wherein one end of the connecting rod is fixed on the piston rod, one end of the limiting rope is fixed on the connecting rod, the other end of the limiting rope is fixed on the bottom of the conductor mechanism, and the limiting rope stretches tightly the falling clamp spring.

7. A novel drop-out quick-disconnect as claimed in claim 1 or 2, wherein: the detection control device comprises a current sensor module, a power taking module, a control module, a driving module, a transmitting module and a signal transmitting coil, wherein the control module controls the driving module to transmit current to the signal transmitting coil, and the signal transmitting coil is in contact with or close to a current receiving coil of the pushing mechanism, so that the current receiving coil generates induced current.

8. The novel drop-out quick-disconnect device of claim 7, wherein: the current sensor module comprises a power taking coil and a measuring coil; the power supply end of the power taking coil is connected with the power transmission end of the power taking module, and the measuring coil transmits the electromagnetic signal to the control module.

9. The novel drop-out quick-disconnect device of claim 7, wherein: the detection control device also comprises a communication module which can be communicated with external equipment and is used for transmitting the fault signal to an external terminal.

10. The novel drop-out quick-disconnect device of claim 2, wherein: the vacuum arc extinguishing device is characterized in that a reset handle hinged with the vertical push rod is arranged above the vertical push rod and 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 dowel bar is transversely arranged at the top of the vertical push rod, and the dowel bar is located in the U-shaped groove of the reset handle.