CN107516883A - A kind of anti-arc circuit protection device and its application - Google Patents
A kind of anti-arc circuit protection device and its application Download PDFInfo
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- CN107516883A CN107516883A CN201710837881.6A CN201710837881A CN107516883A CN 107516883 A CN107516883 A CN 107516883A CN 201710837881 A CN201710837881 A CN 201710837881A CN 107516883 A CN107516883 A CN 107516883A
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- electrode
- arc
- cavity
- ejector
- preventing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/22—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage of short duration, e.g. lightning
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/041—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature additionally responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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Abstract
The invention discloses a kind of anti-arc circuit protection device and its application, including preventing arc component, voltage-sensitive component, responding to switch component, temperature-sensitive element, blowout unit, inner casing and the enclosing cover that flexible member, preventing arc ejector are formed.Voltage-sensitive component has close thermal coupling with responding to switch component, when the factors such as the transient surges overvoltage on circuit make voltage-sensitive component hinder the heating of short circuit current persistent fever for some reason, responding to switch component makes the action ejection separation of preventing arc component because of the thermal coupling response of temperature-sensitive element, prevent electric arc caused by switch ejection separation from forming the short circuit overload that electrical breakdown triggers, prevent electronic equipment from causing secondary destruction, efficiently avoid fire and hidden peril of explosion.
Description
Technical field
The present invention relates to a kind of circuit protection device, more particularly to a kind of anti-arc circuit protection device and its application.
Background technology
Surge protector or surgesuppressor (surge suppressor), are also surge protection device, are that one kind is each
The sensitive or expensive electronic equipment of kind, such as the electronic component on computer and communication relevant device provides the guarantor of overvoltage security protection
Protection unit.Existing surge protection device is typically to aim at the surge overvoltage protection design under medium or general condition, so
Smaller or when the time is shorter in surge overvoltage energy, surge protection device now is unable to the response protection of rapid sensitive, institute
Voltage-sensitive protection element (such as piezo-resistance) would generally be directly applied to realize protection electronics electricity on electronic circuit with us
The purpose on road.Conventional piezo-resistance is the electronic device for including being made up of Zinc oxide particles and complicated transgranular granular materials,
It is a non-linear to voltage device, and unique voltage-current characteristic is the preferable protection device of sensitive electronic circuit, but it
Material composition is determined from catching fire is easily damaged when being overloaded in overvoltage short circuit, to neighbouring sensitive electronic circuit and member
Part produces catastrophic destruction.So, it would be desirable to a kind of safer more sensitive surge protection device, it can be applicable to as logical
On the high precise control circuit such as news, computer, TV, air-conditioning surge overvoltage short circuit overload protection in, as electronic circuit because
When producing momentary spike electric current or overvoltage suddenly for extra electromagnetic interference, the surge protection device can turn within moment
Absorb, power down of releasing comes through voltage and plays protection electronic equipment effect, and can be fast when short circuit overload causes surge device to damage
Speed separates the surge protection device, avoids causing fire to form catastrophic failure to electronic equipment.
Current existing surge protector or surgesuppressor with arc-suppression function, it is generally using masking and breaking arc
Method arc extinguishing, if Chinese patent number is 201420145977.8 to disclose a kind of surgesuppressor with arc extinguishing, including containing
The fixed seat of Indication of Losing Efficacy output pin, the piezo-resistance body with hot disconnector for being arranged on fixed seat side, its feature exist
Insulating trip is provided with the inside of shell fragment between shell fragment and piezo-resistance body, the side of insulating trip is connected to admittedly by axis of rotation
In reservation, compression spring is provided between insulating trip and fixed seat.With Patent No. CN200480041240.0 disclosed in it is a kind of
For preventing device of the electrical system by surge voltage, it includes one or more guard blocks, and the guard block is provided with
For connecting the device of the guard block and the system, and for disconnecting the device of the part from the system, its
It is characterised by, described device includes arc-control device, for preventing when the release unit is in open-circuit condition in breaker
Electric arc is formed between device and attachment means, wherein the arc-control device includes division board, the division board can be transported in gap
It is dynamic, and including the middle part to be positioned between release unit and attachment means and sidepiece, the sidepiece is formed as being used to prevent
Electric arc bypasses the arc-control device.Also describe surge voltage protection device.
In design disclosed above, the switch electrode of responding to switch component when heat departs from, its separating action using
Cover and the mode of breaking arc, the Zhe Hu mechanisms in the method there need to be a stroke to get to position masking, breaking arc,
Can not in the space of switch time of releasing Shi Zhe arcs mechanism access switch electrode with breaking arc, so, pressure under these conditions
Fire, blast are largely overloaded, overheated and finally caused to moment by quick resistance, and this catastrophic destruction can burn neighbouring sensitivity
Electronic equipment and element, so as to cause whole electronic system collapse to damage, security is not high enough.
The content of the invention
It is an object of the invention to overcome existing surge protection device lacking when overvoltage causes device short circuit overload
Fall into and insufficient, there is provided a kind of anti-arc circuit protection device and its application, it, which has, prevents electric arc from producing and being overloaded in short circuit
Quick breaking function under electric current, it can effectively prevent electric arc from producing and the energy quick separating surge protection fills when short circuit is overloaded
Put, can fundamentally prevent disaster hidden-trouble so as to ensure the safety of electronic equipment.
To achieve the above object, the present invention is achieved by the following technical solutions.
A kind of anti-arc circuit protection device, including housing, preventing arc component, voltage-sensitive component, blowout unit, response are opened
Close component and electrode lead-out pins；Described housing includes inner casing and enclosing cover；Described preventing arc component includes preventing arc ejector and bullet
Property element；Described voltage-sensitive component includes at least one voltage sensitive element；Described responding to switch component includes temperature-sensitive
Element, front electrode and tripping electrode；Described tripping electrode is by flexible lamp pole piece, electrode welding end and surge discharge cock
Electrical connection is formed to be formed；Described electrode lead-out pins include flexible conductor, first electrode leading foot and second electrode leading foot；Institute
Three closed cavities are formed when the inner casing stated engages with enclosing cover, described three closed cavities are respectively the first cavity, the second chamber
Body and the 3rd cavity, wherein the first cavity and the 3rd cavity are located at the same side of inner casing, set between the first cavity and the 3rd cavity
Have baffle plate, baffle plate is fixed on inner casing, and height is provided with the 3rd cavity as the cavity depth arc extinguishing step of more than half, baffle plate with
It is seamless between arc extinguishing step to be close to, and height of baffle plate is more slightly higher than arc extinguishing step；Described blowout unit is located at going out for the 3rd cavity
The top of arc step, and be connected with preventing arc ejector；Described arc extinguishing step is provided with the electrode hole towards the second cavity.
Described voltage sensitive element is arranged in the second cavity；Described preventing arc component is arranged in the first cavity, institute
The preventing arc ejector for the preventing arc component stated is provided with the cavity and steam vent for placing tripping electrode, the flexible lamp of described tripping electrode
Pole piece and surge discharge cock are hidden in cavity；Preventing arc ejector front end is provided with through hole, and through hole is the electrode weldering of tripping electrode
Connect the passage that end is stretched out；When preventing arc ejector touches with baffle plate, described through hole is corresponding with baffle plate apical position with lower end；It is anti-
Arc ejector both sides are additionally provided with two wing arms；The chute of preventing arc ejector is additionally provided with the first described cavity；Described chute
Socket-connected with the wing arm of preventing arc ejector；Described flexible member is located in the chute of the first cavity；Described preventing arc ejector
Biased by flexible member, and flexible member is socketed with wing arm front end.
Described voltage sensitive element tow sides are provided with metal electrode film, and one of metal electrode film is provided with the back side
Electrode, backplate are placed in the second cavity；Described front electrode is located on another metal electrode film, and is passed through described
Electrode hole is reached in the 3rd cavity by the second cavity, and is bent towards baffle plate direction；When described preventing arc ejector touches with baffle plate,
Described electrode welding end is extended in the 3rd cavity with surge discharge cock level close to baffle plate top, now, described electrode
Welding ends and the bending end of front electrode are corresponding up and down；The blowout unit is positioned horizontally in close to preventing arc ejector one end edge
On the front edge at electrode welding end.
Slot is additionally provided with the first described cavity, the interior side angle of the second described cavity is provided with neck；Described
One electrode lead-out pins are extended to outside inner casing by slot from the first cavity, and described second electrode leading foot is by neck from second
Cavity is extended to outside inner casing；The both ends of described flexible conductor by way of metal alloy solder soldering or spot welding respectively with it is described
Flexible lamp pole piece and inner form of first electrode leading foot electrically connect, and described backplate passes through metal alloy solder soldering
Mode electrically connects with inner form of second electrode leading foot；First electrode leading foot outer end and second electrode leading foot outer end are stretched out
Two external pins are formed outside the inner casing.
Between described electrode welding end and the bending end of front electrode, after temperature-sensitive element soldering, described is de-
Button electrode is formed with front electrode and electrically connected.
Described anti-arc circuit protection device also includes instruction device and the remote signalling for indicating the surge protection device state
Alarm device；Described instruction device is electric instruction device or mechanical indication means；Described outer cover is additionally provided with indicating window
Mouth and remote signalling breach；Described remote signalling alarm device is additionally provided with alarm leading foot.
Described temperature-sensitive element is meltable metal alloy solder or conducting polymer；Described surge discharge cock is one
The metal alloy compositions of instant vaporization after kind fusing.
Described voltage sensitive element is piezoresistor type sensing element or electric discharge tubular type sensing element or electric discharge
Clearance-type sensing element.
As the further explanation of the present invention, surge discharge cock is a kind of metal alloy material of instant vaporization after fusing
Material, when exceeding preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of surge discharge cock, wave
Gushing discharge cock can fuse vaporization, so as to promote the flexible lamp pole piece of tripping electrode and electrode welding end to separate, that is, realize surge
Protection device possesses the function of the quick disjunction under short-circuit overload current.
As the further explanation of the present invention, described temperature-sensitive element is a kind of meltable metal alloy solder, can be preset
Its temperature threshold melted, when reaching preset temperature threshold, temperature-sensitive element can melt rapidly.
As the further explanation of the present invention, cover outside provided with the indicating window for being used for showing instruction device operating state
Mouthful, i.e., surge protection device has the function of working condition instruction and remote signalling alarm.
As the further explanation of the present invention, the first electrode leading foot outer end and second electrode leading foot outer end are stretched out
Two external pins formed outside inner casing, two external pins can carry out bending use, and this two external pin difference
It is connected on phase line and the neutral conductor or ground wire.
As the further explanation of the present invention, described responding to switch component connects to form normally closed work with voltage-sensitive component
Make state, the switch of remote signalling alarm device is not oppressed by external carbuncle, as surge protection device normal operating conditions.
It is normally closed switch when responding to switch component is in normal operating conditions as the further explanation of the present invention, wherein
The temperature-sensitive element and the voltage-sensitive component are in series to be electrically connected and has close thermal coupling.
The quick disjunction under short-circuit overload current of the present invention prevents that electric arc from producing and the application of arc-suppression function is as follows：
It is normally closed switch when responding to switch component is in normal operating conditions, wherein the temperature-sensitive element and the voltage are quick
Sense component is in series to be electrically connected and has close thermal coupling；If voltage sensitive element because of the short-circuit overload current on circuit and
Leakage current caused by its shelf-life aging causes voltage sensitive element temperature rise, and this temperature is delivered on front electrode, promotes it
On temperature-sensitive element reach preset temperature threshold value and melt, preventing arc ejector is acted on to away from just by the elastic stress of flexible member
The direction ejection of face electrode, tripping electrode launches with preventing arc ejector to the direction away from front electrode, and is hidden in preventing arc
In ejector, promote tripping electrode to be separated with the front electrode moment, prevent caused by the ejection separation of tripping electrode moment
Electric arc forms electrical breakdown and triggers short circuit overload；Meanwhile blowout unit with preventing arc ejector to baffle plate direction slide, finally with going out
Arc step forms the space of a closing, serves the effect of moment arc extinguishing；Thoroughly completely cut off between tripping electrode and front electrode
Electrical connection.
If exceed preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode,
Surge discharge cock moment fusing vaporization thereon causes flexible lamp pole piece and electrode welding end to separate, and preventing arc ejector is by elasticity
The elastic stress of element acts on to be launched to the direction away from front electrode, and wherein flexible lamp pole piece follows preventing arc ejector away from electricity
Pole welding ends, and be hidden in preventing arc ejector.In this way, the insulation that abundance is formed between electrode welding end and flexible lamp pole piece is strong
Degree, thoroughly prevent electric arc caused by flexible lamp pole piece disjunction from forming electrical breakdown；Meanwhile blowout unit with preventing arc ejector to
Baffle plate direction is slided, and the space of a closing is finally formed with arc extinguishing step, and is blown because of flexible lamp pole piece and electrode welding end
Electric arc caused by disjunction.
Now the working condition of responding to switch component by it is normally closed be changed into it is normally opened, in said process on surge protection device
Instruction device is moved displacement, its change different from normal operating conditions can be observed from indication window, while remote signalling is accused
The switch of alarm device is acted on by external carbuncle, promotes its on off state to change, so as to send out electric signal instruction surge protection dress
Put shielding failure.
Wherein, the elastic stress of generally preset flexible member is sufficiently large, to ensure the tripping electrode in responding to switch component
Depart from moment, and keep sufficient dielectric strength.
The beneficial effect that the present invention possesses：
1st, anti-arc circuit protection device of the invention has heated temperature rise moment ejection disengaging and overvoltage short circuit overload
The defencive function that moment ejection departs from.
2nd, responding to switch component of the invention can hide tripping electrode in the ejection disengaging of heated temperature rise moment, or
When short circuit overload moment ejection departs from, tripping electrode moment is away from front electrode, while blowout unit plays the effect of moment arc extinguishing
Fruit.
No matter the 3, which kind of disengaging situation of the present invention, the protection device moment disjunction and can hide tripping electrode,
The dielectric strength of effect is just had been formed with when electric arc does not produce also, thoroughly prevents electric arc from producing, securely and reliably.
Brief description of the drawings
Fig. 1 is that the inner casing of the present invention and preventing arc ejector structure disassemble schematic diagram；
Fig. 2 is the structure schematic diagram of inner casing of the present invention；
Fig. 3 is the diagrammatic cross-section of surge protection device normal operating conditions in the embodiment of the present invention 1；
Fig. 4 is the diagrammatic cross-section after surge protection device failure thermal tripping in the embodiment of the present invention 1；
Fig. 5 is the diagrammatic cross-section after surge protection device fault current cut-offs in the embodiment of the present invention 1；
Fig. 6 is the diagrammatic cross-section of surge protection device normal operating conditions in the embodiment of the present invention 2；
Fig. 7 is the diagrammatic cross-section after surge protection device failure thermal tripping in the embodiment of the present invention 2；
Fig. 8 is the diagrammatic cross-section after surge protection device fault current cut-offs in the embodiment of the present invention 2；
Fig. 9 is the diagrammatic cross-section of surge protection device normal operating conditions in the embodiment of the present invention 3；
Figure 10 is the diagrammatic cross-section after surge protection device failure thermal tripping in the embodiment of the present invention 3；
Figure 11 is the diagrammatic cross-section after surge protection device fault current cut-offs in the embodiment of the present invention 3；
Figure 12 is the structural representation of the enclosing cover of the present invention；
Figure 13 is the structural representation of the voltage sensitive element of the present invention；
Figure 14 is the structural representation of the first electrode leading foot of the present invention；
Figure 15 is the structural representation of the second electrode leading foot of the present invention；
Figure 16 is the structural representation of the flexible conductor of the present invention；
Figure 17 is the structural representation of the remote signalling alarm device of the present invention.
Marked in figure：1st, inner casing, 1a, the 3rd cavity, 1b, the first cavity, 1c, the second cavity, 2, enclosing cover, 2a, indicating window
Mouthful, 2b, remote signalling breach, 3, preventing arc ejector, 4, remote signalling alarm device, 4a, alarm leading foot, 5, chute, 6, tripping electrode,
6a, flexible lamp pole piece, 6b, surge discharge cock, 6c, electrode welding end, 7, voltage sensitive element, 7a, front electrode, 7b, the back of the body
Face electrode, 8, first electrode leading foot, 8a, first electrode leading foot outer end, 8b, first electrode leading foot are inner, the 9, second electricity
Pole leading foot, 9a, second electrode leading foot outer end, 9b, second electrode leading foot are inner, 10, wing arm, 11, instruction device, 12,
Flexible conductor, 13, temperature-sensitive element, 14, flexible member, 15, slot, 16, electrode hole, 17, baffle plate, 18, neck, 19, arc extinguishing step,
20th, blowout unit, 21, cavity, 22, steam vent, 23, through hole.
Embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
Following preferred embodiment is not limited solely to, it is every to be insulated by launching tripping electrode in the present invention to strengthen current interruption
The technical scheme of effect, all within the scope of the present invention；Surge protection device is to voltage sensitive element, elasticity in the present invention
The material type of element and flexible conductor is not limited, and is described in detail the structure of surge protection device of the present invention.
Embodiment 1：
A kind of anti-arc circuit protection device, including housing, preventing arc component, voltage-sensitive component, blowout unit 20, response
Switch module and electrode lead-out pins；Described housing includes inner casing 1 and enclosing cover 2；Described preventing arc component includes preventing arc ejector 3
With flexible member 14；Described voltage-sensitive component includes at least one voltage sensitive element 7；Described responding to switch component bag
Include temperature-sensitive element 13, front electrode 7a and tripping electrode 6；The tripping electrode 6 is by flexible lamp pole piece 6a, electrode welding end 6c
Electrical connection is formed with surge discharge cock 6b to be formed；Described electrode lead-out pins include flexible conductor 12, first electrode leading foot 8
With second electrode leading foot 9；Three closed cavities are formed when inner casing 1 described in tripping electrode 6 engages with the enclosing cover 2, it is described
Three closed cavities be respectively the first cavity 1b, the second cavity 1c and the 3rd cavity 1a, wherein the first cavity 1b and the 3rd chamber
Body 1a is located at the same side of inner casing, and baffle plate 17 is provided between the first cavity 1b and the 3rd cavity 1a, and baffle plate 17 is fixed on inner casing,
Height is provided with 3rd cavity 1a as the cavity depth arc extinguishing step 19 of more than half, it is seamless between baffle plate 17 and arc extinguishing step 19
It is close to, and the height of baffle plate 17 is more slightly higher than arc extinguishing step 19；Described blowout unit 20 is located at the 3rd cavity 1a arc extinguishing step 19
Top, and be connected with preventing arc ejector 3；Described arc extinguishing step 19 is provided with the electrode hole 16 towards the second cavity 1c.
The voltage sensitive element 7 is arranged in the second cavity 1c；The preventing arc component is arranged on first chamber
In body 1b, the preventing arc ejector 3 of the preventing arc component is provided with the cavity 21 and steam vent 22 of placing tripping electrode 6, the dropout
The flexible lamp pole piece 6a and surge discharge cock 6b of electrode 6 are hidden in cavity 21；The front end of preventing arc ejector 3 is provided with through hole 23,
Through hole 23 is the passage that the electrode welding end 6c of the tripping electrode 6 stretches out；It is described when preventing arc ejector 3 touches with baffle plate 17
Through hole 23 is corresponding with baffle plate apical position with lower end；The both sides of preventing arc ejector 3 are additionally provided with two wing arms 10；The first described chamber
The chute 5 of preventing arc ejector 3 is additionally provided with body 1b, the wing arm 10 of described chute 5 and preventing arc ejector 3 socket-connects；Described
Flexible member 14 is located in the first cavity 1b chute 5；Described preventing arc ejector 3 is biased by the flexible member 14, and bullet
Property element 14 and wing arm 10 front end be socketed.
The described tow sides of voltage sensitive element 7 are provided with metal electrode film, and one of metal electrode film is provided with the back of the body
Face electrode 7b, backplate 7b are placed in the second cavity 1c；The front electrode 7a is located on another metal electrode film, and is worn
Cross described electrode hole 16 to be reached in the 3rd cavity 1a by the second cavity 1c, and bent towards the direction of baffle plate 17；When the preventing arc bullet
Emitter 3 touches with baffle plate 17, and the electrode welding end 6c extends the 3rd with surge discharge cock 6b levels close to the top of baffle plate 17
In cavity 1a, now, the electrode welding end 6c and front electrode 7a bending end are corresponding up and down；The blowout unit 20 leans on
The nearly one end edge of preventing arc ejector 3 is positioned horizontally on electrode welding end 6c front edge.
Slot 15 is additionally provided with the first described cavity 1b, the interior side angle of the second cavity 1c is provided with neck 18；Institute
State first electrode leading foot 8 to extend to outside inner casing 1 from the first cavity 1b by the slot 15, the second electrode leading foot 9
Extended to by the neck 18 from the second cavity 1c outside inner casing 1；The both ends of the flexible conductor 12 pass through metal alloy solder tin
The mode of weldering or spot welding forms with the flexible lamp pole piece 6a and first electrode leading foot the inner 8b electrically connect respectively, the back side
Electrode 7b is formed with second electrode leading foot the inner 9b by way of metal alloy solder soldering and electrically connected；First electrode is drawn
Pin outer end 8a and second electrode leading foot outer end 9a, which stretches out, forms two external pins outside the inner casing 1.
It is described after the soldering of temperature-sensitive element 13 between the bending end of the electrode welding end 6c and front electrode 7a
Tripping electrode 6 and front electrode 7a form and electrically connect.
Described anti-arc circuit protection device also includes indicating the instruction device 11 of the surge protection device state and distant
Believe alarm device 4；Described instruction device 11 is electric instruction device or mechanical indication means；It is additionally provided with described enclosing cover 2
Indication window 2a and remote signalling breach 2b；Described remote signalling alarm device 4 is additionally provided with alarm leading foot 4a.
Described temperature-sensitive element 13 is meltable metal alloy solder or conducting polymer；Described surge discharge cock 6b
It is a kind of metal alloy compositions of instant vaporization after fusing.
Described voltage sensitive element 7 is piezoresistor type sensing element or electric discharge tubular type sensing element or electric discharge
Clearance-type sensing element.
Surge discharge cock 6b is a kind of metal alloy compositions of instant vaporization after fusing, when passing through surge discharge cock 6b
Transient surges overvoltage, overcurrent or short-circuit overload current when exceeding preset threshold value, surge discharge cock 6b can fuse vapour
Change, so as to promote the flexible lamp pole piece 6a of tripping electrode 6 and electrode welding end 6c to separate, that is, realize that surge protection device possesses
The function of quick disjunction under short-circuit overload current.
Described temperature-sensitive element 13 is a kind of meltable metal alloy solder, can it is preset its fusing temperature threshold, up to
It can be melted rapidly to temperature-sensitive element 13 during preset temperature threshold.
The indication window 2a for being used for showing the operating state of instruction device 11 is provided with enclosing cover 2, i.e. surge protection device has
There is the function of working condition instruction and remote signalling alarm.
It is outer that first electrode leading foot outer end 8a and second electrode leading foot the outer end 9a stretches out two formed outside inner casing 1
Pin is connect, two external pins can carry out bending use, and this two external pins are connected to phase line and the neutral conductor
Or on ground wire.
The responding to switch component is connected to form normally closed working condition with voltage-sensitive component, and remote signalling alarm device 4 is opened
Guan Wei is oppressed by external carbuncle, as surge protection device normal operating conditions.
It is normally closed switch when responding to switch component is in normal operating conditions, wherein the temperature-sensitive element 13 and the voltage
Sensing assembly is in series to be electrically connected and has close thermal coupling.
In the present embodiment, instruction device 11 is a push rod, and it is located at the end of preventing arc ejector 3, with preventing arc ejector 3
It is integral, the relevant position on enclosing cover 2 is provided with the indication window 2a and remote signalling breach 2b stretched out for instruction device 11, remote signalling
Alarm device 4 is independent switch.
Remote signalling alarm device 4 is arranged in enclosing cover 2, and it alerts leading foot 4a and stretched out outside enclosing cover 2.Flexible member 14 is placed on
In two chutes 5, preventing arc ejector 3 is inserted in chute 5 by two flank arms 10 until touching front electrode 7a, preventing arc ejector
3 pressuring elastic elements 14 make it be in compressive state.
When using surge protection device in the power supply system, two external pins are connected to phase line and the neutral conductor
On, now, instruction device 11 is in indication window 2a, and the switch of remote signalling alarm device 4 is not oppressed by external carbuncle, as surge
The normal operating conditions of protection device.
It is normally closed switch when responding to switch component is in normal operating conditions, wherein the temperature-sensitive element 13 and the voltage
Sensing assembly is in series to be electrically connected and has close thermal coupling；If voltage sensitive element 7 is because of the short circuit overload electricity on circuit
Leakage current caused by stream and its shelf-life aging causes the temperature rise of voltage sensitive element 7, and this temperature is delivered on front electrode 7a,
Temperature-sensitive element 13 thereon is promoted to reach preset temperature threshold value and melt, elastic stress of the preventing arc ejector 3 by flexible member 14
Act on and being launched to the direction away from front electrode 7a, tripping electrode 6 is with preventing arc ejector 3 to the direction away from front electrode 7a
Ejection, and be hidden in preventing arc ejector 3, promote the tripping electrode 6 to be separated with the front electrode 7a moments, prevent from threading off
Electric arc caused by the ejection separation of the moment of electrode 6 forms electrical breakdown and triggers short circuit overload；Meanwhile blowout unit 20 is with preventing arc bullet
Emitter 3 is slided to the direction of baffle plate 17, and the space of a closing is finally formed with arc extinguishing step 19, serves the effect of moment arc extinguishing
Fruit；The electrical connection thoroughly completely cut off between tripping electrode 6 and front electrode 7a, prevent from producing during the ejection separation of the moment of tripping electrode 6
Electric arc formed electrical breakdown trigger short circuit overload.
If exceed preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode 6,
The vaporization that fuses of surge discharge cock 6b moments thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, preventing arc ejector
3 are acted on to the direction ejection away from front electrode 7a by the elastic stress of flexible member 14, and wherein flexible lamp pole piece 6a is followed anti-
Arc ejector 3 is hidden in preventing arc ejector 3 away from electrode welding end 6c.In this way, electrode welding end 6c and flexible lamp pole piece
The dielectric strength of abundance is formed between 6a, thoroughly prevents electric arc caused by flexible lamp pole piece 6a disjunctions from forming electrical breakdown；Meanwhile
Blowout unit 20 with preventing arc ejector 3 to the direction of baffle plate 17 slide, finally with arc extinguishing step 19 formed one closing space,
And blow because of electric arc caused by flexible lamp pole piece 6a and the 6c disjunctions of electrode welding end, prevent moment from fusing and produced when launching separation
Raw electric arc forms electrical breakdown and triggers short circuit overload.
Now the working condition of responding to switch component by it is normally closed be changed into it is normally opened, during instruction on surge protection device
Device 11 is moved displacement, and its change different from normal operating conditions can be observed from indication window 2a, meanwhile, preventing arc bullet
The end of emitter 3 to the switch of remote signalling alarm device 4 cause compressing and it is static, promote its on off state to change.It is so both complete
Into a mechanical Indication of Losing Efficacy, while the remote signalling electric signal of the surge protection device shielding failure is sent out again.
Wherein, the elastic stress of generally preset flexible member 14 is sufficiently large, to ensure the electricity of the dropout in responding to switch component
Pole 6 departs from moment, and keeps sufficient dielectric strength.
Embodiment 2：
A kind of another embodiment of anti-arc circuit protection device of the present invention.The embodiment has and embodiment 1
Middle most of component similar structure and usage, the main distinction are：
Described surge protection device is free of remote signalling alarm device 4；Welded by metal alloy at the both ends of the flexible conductor 12
The mode of shots weldering is formed with the flexible lamp pole piece 6a and first electrode leading foot the inner 8b respectively to be electrically connected；Described instruction
Device 11 is mechanical indication means 11；Described temperature-sensitive element 13 is conducting polymer；Described voltage sensitive element 7 is electric discharge
Tubular type sensing element.
It is outer that first electrode leading foot outer end 8a and second electrode leading foot the outer end 9a stretches out two formed outside inner casing 1
Pin is connect, and this two external pins are connected in phase line and ground wire.
When using surge protection device in the power supply system, phase line and ground are connected to after two external pins are bent
On line, now, instruction device 11 contracts in indication window 2a, as the normal operating conditions of surge protection device.
It is normally closed switch when responding to switch component is in normal operating conditions, wherein the temperature-sensitive element 13 and the voltage
Sensing assembly is in series to be electrically connected and has close thermal coupling；If voltage sensitive element 7 is because of the short circuit overload electricity on circuit
Leakage current caused by stream and its shelf-life aging causes the temperature rise of voltage sensitive element 7, and this temperature is delivered on front electrode 7a,
Temperature-sensitive element 13 thereon is promoted to reach preset temperature threshold value and melt, elastic stress of the preventing arc ejector 3 by flexible member 14
Act on and being launched to the direction away from front electrode 7a, tripping electrode 6 is with preventing arc ejector 3 to the direction away from front electrode 7a
Ejection, and be hidden in preventing arc ejector 3, promote the tripping electrode 6 to be separated with the front electrode 7a moments, prevent from threading off
Electric arc caused by the ejection separation of the moment of electrode 6 forms electrical breakdown and triggers short circuit overload；Meanwhile blowout unit 20 is with preventing arc bullet
Emitter 3 is slided to the direction of baffle plate 17, and the space of a closing is finally formed with arc extinguishing step 19, serves the effect of moment arc extinguishing
Fruit；The electrical connection thoroughly completely cut off between tripping electrode 6 and front electrode 7a.
In addition, if preset threshold is exceeded by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode 6
During value, the vaporization that fuses of surge discharge cock 6b moments thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, preventing arc
Ejector 3 is acted on to the direction away from front electrode 7a by the elastic stress of flexible member 14 and launched, wherein flexible lamp pole piece 6a
Preventing arc ejector 3 is followed away from electrode welding end 6c, and is hidden in preventing arc ejector 3.In this way, electrode welding end 6c and activity
The dielectric strength of abundance is formed between electrode slice 6a, thoroughly prevents electric arc caused by flexible lamp pole piece 6a disjunctions from forming electric shock
Wear；Meanwhile blowout unit 20 finally forms an envelope as preventing arc ejector 3 is to the slip of the direction of baffle plate 17 with arc extinguishing step 19
The space closed, and blow because of electric arc caused by flexible lamp pole piece 6a and the 6c disjunctions of electrode welding end.
Now the working condition of responding to switch component by it is normally closed be changed into it is normally opened, during instruction on surge protection device
Device 11 is moved displacement, its change different from normal operating conditions can be observed from indication window 2a, while remote signalling is accused
The switch of alarm device 4 is acted on by external carbuncle, promotes its on off state to change, so as to send out electric signal instruction surge protection dress
Put shielding failure.
Wherein, the elastic stress of generally preset flexible member 14 is sufficiently large, to ensure the electricity of the dropout in responding to switch component
Pole 6 departs from moment, and keeps sufficient dielectric strength.
Embodiment 3：
A kind of another embodiment of anti-arc circuit protection device of the present invention.The embodiment has and embodiment 1
Middle most of component similar structure and usage, the main distinction are：
Surge protection device is free of instruction device 11 and indication window 2a, and is used as working condition using remote signalling alarm device 4
Instruction；
Described voltage sensitive element 7 is discharging gap formula sensing element.
Enclosing cover 2 is provided with remote signalling breach 2b, and remote signalling alarm device 4 is arranged in enclosing cover 2, and it alerts leading foot 4a and stretches out enclosing cover
Outside 2.When using surge protection device in the power supply system, two external pins are connected to phase line and the neutral conductor or ground wire
On, now, the switch of remote signalling alarm device 4 is not oppressed by external carbuncle, as the normal operating conditions of surge protection device.
It is normally closed switch when responding to switch component is in normal operating conditions, wherein the temperature-sensitive element 13 and the voltage
Sensing assembly is in series to be electrically connected and has close thermal coupling；If voltage sensitive element 7 is because of the short circuit overload electricity on circuit
Leakage current caused by stream and its shelf-life aging causes the temperature rise of voltage sensitive element 7, and this temperature is delivered on front electrode 7a,
Temperature-sensitive element 13 thereon is promoted to reach preset temperature threshold value and melt, elastic stress of the preventing arc ejector 3 by flexible member 14
Act on and being launched to the direction away from front electrode 7a, tripping electrode 6 is with preventing arc ejector 3 to the direction away from front electrode 7a
Ejection, promotes the tripping electrode 6 to be separated with the front electrode 7a moments, and is hidden in preventing arc ejector 3, prevents from threading off
Electric arc caused by the ejection separation of the moment of electrode 6 forms electrical breakdown and triggers short circuit overload；Meanwhile blowout unit 20 is with preventing arc bullet
Emitter 3 is slided to the direction of baffle plate 17, and the space of a closing is finally formed with arc extinguishing step 19, serves the effect of moment arc extinguishing
Fruit；The electrical connection thoroughly completely cut off between tripping electrode 6 and front electrode 7a.
In addition, if preset threshold is exceeded by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode 6
During value, the vaporization that fuses of surge discharge cock 6b moments thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, preventing arc
Ejector 3 is acted on to the direction away from front electrode 7a by the elastic stress of flexible member 14 and launched, wherein flexible lamp pole piece 6a
Preventing arc ejector 3 is followed away from electrode welding end 6c, and is hidden in preventing arc ejector 3.In this way, electrode welding end 6c and activity
The dielectric strength of abundance is formed between electrode slice 6a, thoroughly prevents electric arc caused by flexible lamp pole piece 6a disjunctions from forming electric shock
Wear；Meanwhile blowout unit 20 finally forms an envelope as preventing arc ejector 3 is to the slip of the direction of baffle plate 17 with arc extinguishing step 19
The space closed, and blow because of electric arc caused by flexible lamp pole piece 6a and the 6c disjunctions of electrode welding end.
Now the working condition of responding to switch component by it is normally closed be changed into it is normally opened, during instruction on surge protection device
Device 11 is moved displacement, its change different from normal operating conditions can be observed from indication window 2a, i.e. preventing arc launches
The end of device 3 to the switch of remote signalling alarm device 4 cause compressing and it is static, promote its on off state to change.So both complete
One mechanical Indication of Losing Efficacy, while send out the remote signalling electric signal of the surge protection device shielding failure again.
Wherein, the elastic stress of generally preset flexible member 14 is sufficiently large, to ensure the electricity of the dropout in responding to switch component
Pole 6 departs from moment, and keeps sufficient dielectric strength.Now the working condition of responding to switch component is changed into often by normally closed
Open.
Claims (9)
- A kind of 1. anti-arc circuit protection device, it is characterised in that：Including housing, preventing arc component, voltage-sensitive component, arc extinguishing member Part (20), responding to switch component and electrode lead-out pins；Described housing includes inner casing (1) and enclosing cover (2)；Described preventing arc component Including preventing arc ejector (3) and flexible member (14)；Described voltage-sensitive component includes at least one voltage sensitive element (7)；Described responding to switch component includes temperature-sensitive element (13), front electrode (7a) and tripping electrode (6)；The electricity of threading off Pole (6) forms electrical connection by flexible lamp pole piece (6a), electrode welding end (6c) and surge discharge cock (6b) and formed；Described Electrode lead-out pins include flexible conductor (12), first electrode leading foot (8) and second electrode leading foot (9)；Described inner casing (1) with Three closed cavities are formed during enclosing cover (2) engagement, described three closed cavities are respectively the first cavity (1b), the second chamber Body (1c) and the 3rd cavity (1a), wherein the first cavity (1b) is located at the same side of inner casing, the first cavity with the 3rd cavity (1a) Baffle plate (17) is provided between (1b) and the 3rd cavity (1a), baffle plate (17) is fixed on inner casing, and height is provided with the 3rd cavity (1a) Spend for the cavity depth arc extinguishing step (19) of more than half, it is seamless between baffle plate (17) and arc extinguishing step (19) to be close to；Described Blowout unit (20) is located at the top of the arc extinguishing step (19) of the 3rd cavity (1a), and is connected with preventing arc ejector (3)；Described Arc extinguishing step (19) is provided with the electrode hole (16) towards the second cavity (1c).
- A kind of 2. anti-arc circuit protection device according to claim 1, it is characterised in that：Described voltage sensitive element (7) it is arranged in the second cavity (1c)；Described preventing arc component is arranged in the first cavity (1b), and described preventing arc component is prevented Arc ejector (3) is provided with the cavity (21) and steam vent (22) for placing tripping electrode (6), the activity of described tripping electrode (6) Electrode slice (6a) and surge discharge cock (6b) are hidden in cavity (21)；Preventing arc ejector (3) front end is provided with through hole (23), leads to Hole (23) is the passage that described electrode welding end (6c) is stretched out；When preventing arc ejector (3) touches with baffle plate (17), described is logical Hole (23) is corresponding with baffle plate apical position with lower end；Preventing arc ejector (3) both sides are additionally provided with two wing arms (10)；Described The chute (5) of preventing arc ejector (3), the wing arm of described chute (5) and preventing arc ejector (3) are additionally provided with one cavity (1b) (10) socket-connect；Described flexible member (14) is located in the first cavity (1b) chute (5)；Described preventing arc ejector (3) Biased by the flexible member (14), and the front end of flexible member (14) and wing arm (10) is socketed.
- A kind of 3. anti-arc circuit protection device according to claim 1, it is characterised in that：Described voltage sensitive element (7) tow sides are provided with metal electrode film, and one of metal electrode film is provided with backplate (7b), and backplate (7b) is put In the second cavity (1c)；Described front electrode (7a) is located on another metal electrode film, and through electrode hole (16) by Second cavity (1c) is reached in the 3rd cavity (1a), and is bent towards baffle plate (17) direction；When described preventing arc ejector (3) is with gear Plate (17) touches, and described electrode welding end (6c) extends the 3rd with surge discharge cock (6b) level close to baffle plate (17) top In cavity (1a), now, the electrode welding end (6c) and the bending end of front electrode (7a) are corresponding up and down；The arc extinguishing member Part (20) is positioned horizontally on electrode welding end (6c) front edge close to preventing arc ejector (3) one end edge.
- A kind of 4. anti-arc circuit protection device according to claim 1, it is characterised in that：Described the first cavity (1b) Slot (15) is inside additionally provided with, the interior side angle of described the second cavity (1c) is provided with neck (18)；Described first electrode is drawn Pin (8) extends to inner casing (1) outside by slot (15) from the first cavity (1b), and the second electrode leading foot (9) passes through neck (18) inner casing (1) is extended to outside from the second cavity (1c)；The both ends of the flexible conductor (12) by metal alloy solder soldering or The mode of spot welding is formed and electrically connected with flexible lamp pole piece (6a) and first electrode leading foot inner (8b) respectively, the backplate (7b) is formed with second electrode leading foot inner (9b) by way of metal alloy solder soldering and electrically connected；First electrode is drawn Pin outer end (8a) and second electrode leading foot outer end (9a) stretch out the inner casing (1) and form two external pins outside.
- A kind of 5. anti-arc circuit protection device according to claim 1, it is characterised in that：Described electrode welding end Between the bending end of (6c) and front electrode (7a), after temperature-sensitive element (13) soldering, described tripping electrode (6) with just Face electrode (7a) forms electrical connection.
- A kind of 6. anti-arc circuit protection device according to claim 1, it is characterised in that：Described anti-arc circuit is protected Protection unit also includes the instruction device (11) and remote signalling alarm device (4) for indicating the surge protection device state；Described instruction Device (11) is electric instruction device or mechanical indication means；Indication window (2a) and remote signalling are additionally provided with described enclosing cover (2) Breach (2b)；Described remote signalling alarm device (4) is additionally provided with alarm leading foot (4a).
- A kind of 7. anti-arc circuit protection device according to claim 1, it is characterised in that：Described temperature-sensitive element (13) It is meltable metal alloy solder or conducting polymer；Described surge discharge cock (6b) is instant vaporization after a kind of fusing Metal alloy compositions.
- A kind of 8. anti-arc circuit protection device according to claim 1, it is characterised in that：Described voltage sensitive element (7) it is piezoresistor type sensing element or electric discharge tubular type sensing element or discharging gap formula sensing element.
- A kind of 9. application of anti-arc circuit protection device according to any one of claims 1 to 8, it is characterised in that：Work as sound Inductive switch component is normally closed switch in normal operating conditions, the structure wherein temperature-sensitive element (13) is connected with voltage-sensitive component Into electrical connection and there is close thermal coupling；Melted when described temperature-sensitive element (13) reaches preset fusion temperature, preventing arc Ejector (3) is acted on to the direction away from front electrode (7a) by the elastic stress of flexible member (14) and launched, tripping electrode (6) Launch, and be hidden in preventing arc ejector (3) to the direction away from front electrode (7a) with preventing arc ejector (3), promote to take off Button electrode (6) separates with front electrode (7a) moment, prevents electric arc caused by the ejection separation of tripping electrode (6) moment from forming electricity Breakdown triggers short circuit overload；Meanwhile blowout unit (20) with preventing arc ejector (3) to baffle plate (17) direction slide, finally with Arc extinguishing step (19) forms the space of a closing, serves the effect of moment arc extinguishing；When transient surges overvoltage, overcurrent or the short-circuit overload current that described surge discharge cock (6b) passes through are pre- more than its During the threshold value put, the fusing vaporization of surge discharge cock (6b) moment separates flexible lamp pole piece (6a) and electrode welding end (6c), Described preventing arc ejector (3) is acted on to the side away from the front electrode (7a) by the elastic stress of flexible member (14) simultaneously To quick ejection, the electrode slice that innervates (6a) is with preventing arc ejector (3) to the quick bullet in direction away from front electrode (7a) Penetrate, wherein flexible lamp pole piece (6a) is hidden in preventing arc ejector (3), is prevented moment from fusing and is launched electric arc caused by separation Formed electrical breakdown trigger short circuit overload, meanwhile, blowout unit (20) with preventing arc ejector (3) to baffle plate (17) direction slide, The space of a closing is finally formed with arc extinguishing step (19), and moment is blown because of flexible lamp pole piece (6a) and electrode welding end Electric arc caused by (6c) disjunction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837881.6A CN107516883A (en) | 2017-09-14 | 2017-09-14 | A kind of anti-arc circuit protection device and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837881.6A CN107516883A (en) | 2017-09-14 | 2017-09-14 | A kind of anti-arc circuit protection device and its application |
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| Publication Number | Publication Date |
|---|---|
| CN107516883A true CN107516883A (en) | 2017-12-26 |
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ID=60725478
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710837881.6A Pending CN107516883A (en) | 2017-09-14 | 2017-09-14 | A kind of anti-arc circuit protection device and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436917A (en) * | 2021-07-13 | 2021-09-24 | 宁波公牛数码科技有限公司 | Switch with a switch body |
-
2017
- 2017-09-14 CN CN201710837881.6A patent/CN107516883A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436917A (en) * | 2021-07-13 | 2021-09-24 | 宁波公牛数码科技有限公司 | Switch with a switch body |
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Application publication date: 20171226 |