CN107465179A - A kind of lightning protection device and its application based on electric discharge tubular type sensing element - Google Patents
A kind of lightning protection device and its application based on electric discharge tubular type sensing element Download PDFInfo
- Publication number
- CN107465179A CN107465179A CN201710844491.1A CN201710844491A CN107465179A CN 107465179 A CN107465179 A CN 107465179A CN 201710844491 A CN201710844491 A CN 201710844491A CN 107465179 A CN107465179 A CN 107465179A
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- Prior art keywords
- electrode
- cavity
- protection device
- tripping
- component
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/20—Electrothermal mechanisms with fusible mass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- 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
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- 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
Abstract
The invention discloses a kind of lightning protection device based on electric discharge tubular type sensing element and its application, including flexible member, preventing arc component, voltage-sensitive component, responding to switch component, temperature-sensitive element, inner casing and enclosing cover.The present invention is used for transient surges overvoltage in suppression circuit, voltage-sensitive component has close thermal coupling with responding to switch component, when factors such as the transient surges overvoltage on circuit, make voltage-sensitive component hinder for some reason short circuit current persistent fever heating when, 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, 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 lightning protection device based on electric discharge tubular type sensing element and
It is applied.
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, as Chinese patent number be 200810088691.X disclosed in a kind of pressure-sensitive electricity of Thermal protection for surge protection
Device module is hindered, it is a set of to be gone out with compression spring and wedge shape mainly by metal-oxide varistor and a thermal response switch
The propeller of arc device, and shell are formed.Closely heat between thermal response switch and metal-oxide varistor be present
Coupling.When metal-oxide varistor is by overstress, itself can generate heat, and thermal response switch experiences heat immediately
Amount, softens the solder joint of eutectic solder, in the propeller with spring and wedge-shaped extinguisher and conduction with resilience
Under the collective effect of road linking arm, solder joint is forced to disconnect rapidly and wedge-shaped extinguisher is inserted partially between the disconnected place's formation of solder joint
Between gap, strengthen the effect of electric arc of going out.
And for example Chinese patent number discloses a kind of surgesuppressor with arc extinguishing for 201420145977.8, including containing mistake
The fixed seat of effect instruction output pin, the piezo-resistance body with hot disconnector for being arranged on fixed seat side, it is characterised in that
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 fixation by axis of rotation
On seat, compression spring is provided between insulating trip and fixed seat.With Patent No. CN200480041240.0 disclosed in a kind of use
In preventing device of the electrical system by surge voltage, it includes one or more guard blocks, and the guard block, which is provided with, to be used
In the device for connecting the guard block and the system, and for disconnecting the device of the part from the system, it is special
Sign is that described device includes arc-control device, for preventing from filling in breaker when the release unit is in open-circuit condition
Put and electric arc is formed between attachment means, wherein the arc-control device includes division board, the division board can move in gap,
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
Around 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 deficiency, there is provided it is a kind of based on electric discharge tubular type sensing element lightning protection device and its application, it have prevent electric arc produce and
The quick breaking function under short-circuit overload current, it can effectively prevent electric arc generation and energy quick separating electricity when short circuit is overloaded
Protection device is gushed, 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 lightning protection device based on electric discharge tubular type sensing element, including housing, preventing arc component, voltage-sensitive component, response
Switch module and electrode lead-out pins；Described housing includes inner casing and enclosing cover；Described inner casing is with enclosing cover by way of lock
Engagement；Described preventing arc component includes preventing arc ejector and flexible member；Described voltage-sensitive component includes at least one electricity
Pressure-sensitive sensing unit；Described responding to switch component includes temperature-sensitive element, front electrode and tripping electrode；The tripping electrode by
Flexible lamp pole piece, electrode welding end and cut-off position composition, and flexible lamp pole piece, electrode welding end and cut-off position formed circuit connect
Connect；Described electrode lead-out pins include flexible conductor, first electrode leading foot and second electrode leading foot；Described preventing arc ejector
Connection is consolidated with the flexible lamp pole piece of the tripping electrode；Three envelopes are formed when inner casing is engaged with enclosing cover by way of lock
Closed chamber body, described three closed cavities are respectively the first cavity, the second cavity and the 3rd cavity, wherein the first cavity and the 3rd
Cavity is located at the same side of inner casing；The second described cavity is located at the opposite side of inner casing.
Described voltage sensitive element is arranged in the second cavity；Described preventing arc component is arranged on first cavity
Interior, described preventing arc ejector both sides are provided with two wing arms；The 3rd described cavity and the dividing plate of the first cavity are provided with electricity of threading off
Pole through hole；Described tripping electrode through hole is the electrode welding end and cut-offs the passage of position stretching；Described electrode welding end
Reached with position is cut-off through tripping electrode through hole in the 3rd cavity；The cunning of preventing arc ejector is additionally provided with the first described cavity
Groove, the wing arm of described chute and preventing arc ejector socket-connect；Described flexible member is located in the chute of the first cavity；It is described
Preventing arc ejector biased by the flexible member, and the front end of the wing arm of flexible member and preventing arc ejector is socketed.
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；Another metal electrode film is provided with front electrode, and described front electrode passes through
Electrode hole is reached in the 3rd cavity by the second cavity, and slotted eye, described tripping electrode through hole are additionally provided with described front electrode
Setting corresponding with slotted eye；When the preventing arc ejector touches with described dividing plate, the electrode welding end is with cut-offfing position stretching
During tripping electrode through hole, the electrode welding end is corresponding with the position of slotted eye.
Slot is additionally provided with the first described cavity, the interior side angle of second cavity is provided with neck；First electricity
Pole leading foot is extended to outside inner casing by the slot from the first cavity, and the second electrode leading foot is by the neck from
Two cavitys are extended to outside inner casing；The both ends of the flexible conductor by way of metal alloy solder soldering or spot welding respectively with it is described
Flexible lamp pole piece connects with the inner circuit that forms of first electrode leading foot, and the backplate passes through metal alloy solder soldering
Mode is connected with the inner circuit that forms of second electrode leading foot；First electrode leading foot outer end and second electrode leading foot outer end are stretched
Go out and two external pins are formed outside the inner casing.
After the slotted eye of tripping electrode through hole and described front electrode is stretched out at described electrode welding end, pass through temperature-sensitive element
Circuit is formed with the front electrode soldering to be connected.
The described lightning protection device based on electric discharge tubular type sensing element also includes the instruction for indicating the surge protection device state
Device and the remote signalling alarm device for indicating the surge protection device state；Described instruction device is electric instruction device or machine
Tool instruction device；It is described outer to cover the window for being additionally provided with instruction device；Described remote signalling alarm device is additionally provided with alarm and drawn
Pin.
Described temperature-sensitive element is meltable conducting polymer；Described cut-offs the gold that position is instant vaporization after a kind of fusing
Belong to alloy material.
Described voltage sensitive element is electric discharge tubular type sensing element.
As the further explanation of the present invention, when preventing arc ejector touches with the dividing plate of the 3rd cavity and the first cavity
When, tripping electrode through hole is corresponding with the position of slotted eye, to ensure that electrode welding end can be also cross tripping electrode through hole and groove
Hole.
As the further explanation of the present invention, the metal alloy compositions that position is instant vaporization after a kind of fusing are cut-off, when logical
When crossing the transient surges overvoltage for cut-offfing position, overcurrent or short-circuit overload current and exceeding preset threshold value, cut-offfing position can fuse vapour
Change, so as to promote the flexible lamp pole piece of tripping electrode and electrode welding end to separate, that is, realize that surge protection device possesses in short circuit
The function of quick disjunction under overload current.
As the present invention further explanation, described temperature-sensitive element is a kind of meltable conducting polymer, can it is preset its
The temperature threshold of fusing, 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, and this two external pins are connected on phase line and the neutral conductor or ground wire.
As the further explanation of the present invention, the responding to switch component connects to form normally closed work with voltage-sensitive component
State, the switch of remote signalling alarm device are not oppressed by external carbuncle, as surge protection device normal operating conditions.
As the further explanation of the present invention, fire-retardant arc quenching material can be filled in the 3rd described cavity.
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 is connected with the voltage-sensitive component circuit in series and has close thermal coupling.
The application of the present invention is as follows：
If voltage sensitive element electricity caused by leakage current caused by short-circuit overload current and its shelf-life aging on circuit
Pressure-sensitive sensing unit temperature rise, this temperature are delivered on front electrode, the temperature-sensitive element for promoting thereon reach preset temperature threshold value and
Fusing, preventing arc ejector are acted on to the direction away from front electrode by the elastic stress of flexible member and launched, and promote the dropout
Electrode separates with the front electrode.The temperature-sensitive element of fusing on electrode welding end is released electrode through hole and struck off, front
The dielectric strength of abundance is formed between electrode and electrode welding end, the circuit thoroughly completely cut off between tripping electrode and front electrode connects
Connect.
If exceed preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode,
A moment fusing vaporization of cut-offfing thereon causes flexible lamp pole piece and electrode welding end to separate, and preventing arc ejector is by flexible member
Elastic stress acts on to be launched to the direction away from front electrode, and wherein flexible lamp pole piece follows preventing arc ejector away from electrode welding
End.In this way, the dielectric strength of abundance is formed between electrode welding end and flexible lamp pole piece, when thoroughly preventing flexible lamp pole piece disjunction
Caused electric arc forms electrical breakdown；Moment is elongated and blown because of electricity caused by flexible lamp pole piece and the disjunction of electrode welding end simultaneously
Arc.
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 is moved displacement, and its change different from normal operating conditions, while remote signalling alarm dress can be observed from indication window
The switch put is acted on by external carbuncle, promotes its on off state to change, and is protected so as to send out electric signal instruction surge protection device
Shield 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 sufficient dielectric strength is remained between tripping electrode through hole.
The beneficial effect that the present invention possesses：
1st, there is the lightning protection device based on the tubular type sensing element that discharges of the invention heated temperature rise moment ejection to depart from (such as by certainly
Leakage current caused by the aging of body life-span) and the short-circuit defencive function for overloading moment ejection and departing from of overvoltage.
2nd, responding to switch component of the invention can hide tripping electrode in the ejection disengaging of heated temperature rise moment, or
Short circuit overload moment ejection is ingenious when departing to be elongated using caused blast moment during tripping electrode disjunction and is blown electricity
Arc.
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 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, 6a, float electrode
Piece, 6b, cut-off position, 6c, electrode welding end, 7, voltage sensitive element, 7a, front electrode, 7b, backplate, 7c, slotted eye, 8,
First electrode leading foot, 8a, first electrode leading foot outer end, 8b, first electrode leading foot are inner, and 9, second electrode 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, tripping electrode through hole, 18, neck.
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：
As shown in figure 1, a kind of lightning protection device based on electric discharge tubular type sensing element, including housing, preventing arc component, voltage-sensitive
Component, responding to switch component and electrode lead-out pins；Described housing includes inner casing 1 and enclosing cover 2；Described preventing arc component includes anti-
Arc ejector 3 and flexible member 14；Described voltage-sensitive component includes at least one voltage sensitive element 7；Described response
Switch module includes temperature-sensitive element 13, front electrode 7a and tripping electrode；The tripping electrode is by flexible lamp pole piece 6a, electrode
Welding ends 6c is formed with a 6b is cut-off, and flexible lamp pole piece 6a, electrode welding end 6c connect with a 6b formation circuit is cut-off；It is described
Electrode lead-out pins include flexible conductor 12, first electrode leading foot 8 and second electrode leading foot 9；Described preventing arc ejector 3 with
The firm connections of the flexible lamp pole piece 6a of the tripping electrode；Three closings of formation when described inner casing 1 engages with the enclosing cover 2
Cavity, respectively the first cavity 1b, the second cavity 1c and the 3rd cavity 1a, wherein the first cavity 1b and the 3rd cavity 1a are in inner casing
The same side.
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 both sides of preventing arc ejector 3 of the preventing arc component are provided with two wing arms 10；The 3rd described cavity 1a and the first cavity
1b dividing plate is provided with tripping electrode through hole 17；Described tripping electrode through hole 17 is the electrode welding end 6c and cut-offs a 6b and stretch
The passage gone out；The electrode welding end 6c of the tripping electrode and cut-off a 6b and reach the 3rd cavity 1a through tripping electrode through hole 17
In；The chute 5 of preventing arc ejector 3, the wing arm of described chute 5 and preventing arc ejector 3 are additionally provided with the first described cavity 1b
10 socket-connect；Described flexible member 14 is located in the chute 5 of the first cavity 1b；Described preventing arc ejector 3 is by described
Flexible member 14 biases, and the front end of flexible member 14 and wing arm 10 socket-connects.
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 logical
The electrode hole 16 that the 3rd described cavity 1a and the second cavity 1c dividing plate is set is crossed, the 3rd cavity 1a is reached by the second cavity 1c
It is interior, slotted eye 7c, the tripping electrode through hole 17 setting corresponding with the slotted eye 7c are additionally provided with described front electrode 7a；When
The preventing arc ejector 3 touches with the 3rd cavity 1a and the first cavity 1b dividing plate, and the electrode welding end 6c is with cut-offfing
When position 6b stretches out tripping electrode through hole 17, the electrode welding end 6c and slotted eye 7c corresponding setting.
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 described neck 18 from the second cavity 1c outside inner casing 1；The both ends of the flexible conductor 12 pass through metal alloy solder
The mode of soldering forms circuit with the flexible lamp pole piece 6a and first electrode leading foot the inner 8b respectively and is connected；So as to these electricity
Conductor is connected with piezo-resistance and forms normally closed switch.First electrode leading foot outer end 8a and second electrode leading foot outer end 9a stretch
Go out and two external pins are formed outside inner casing 1.
After described electrode welding end 6c stretches out tripping electrode through hole 17 and slotted eye 7c, by temperature-sensitive element 13 with it is described just
Face electrode 7a solderings form circuit connection.
The described lightning protection device based on electric discharge tubular type sensing element also includes the instruction for indicating the surge protection device state
Device and the remote signalling alarm device 4 for indicating the surge protection device state；Described instruction device is electric instruction device；Institute
Indication window 2a and remote signalling breach 2b are additionally provided with the enclosing cover 2 stated；Described remote signalling alarm device 4 is additionally provided with alarm leading foot
4a。
Described temperature-sensitive element 13 is meltable conducting polymer；A described 6b that cut-offs is instant vaporization after a kind of fusing
Metal alloy compositions.
Described voltage sensitive element 7 is electric discharge tubular type sensing element.
When the dividing plate of preventing arc ejector 3 and the 3rd cavity 1a and the first cavity 1b touches, tripping electrode through hole 17
It is corresponding with slotted eye 7c position, to ensure that electrode welding end 6c can be also cross tripping electrode through hole 17 and slotted eye 7c.
Described cut-offs the metal alloy compositions that a 6b is instant vaporization after a kind of fusing, when by cut-offfing the instantaneous of a 6b
When surge overvoltage, overcurrent or short-circuit overload current exceed preset threshold value, cut-offfing a 6b can fuse vaporization, so as to promote to take off
Flexible lamp pole piece 6a and electrode welding end the 6c separation of electrode are detained, that is, realizes that surge protection device possesses under short-circuit overload current
The function of quick disjunction.
Described temperature-sensitive element 13 is a kind of meltable conducting polymer, can it is preset its fusing temperature threshold, reaching
Temperature-sensitive element 13 can melt rapidly during preset temperature threshold.
The indication window 2a and remote signalling breach 2b for being used for showing instruction device operating state, i.e. surge are provided with enclosing cover 2
Protection device has 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, and this two external pins are connected in phase line and the neutral conductor.
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 circuit in series connects 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.
Fire-retardant arc quenching material is filled with the 3rd described cavity 1a.
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.
As shown in figure 3, if voltage sensitive element 7 is because of leakage caused by short-circuit overload current and its shelf-life aging on circuit
Electric current causes the temperature rise of voltage sensitive element 7, and this temperature is delivered on front electrode 7a, promotes temperature-sensitive element 13 thereon to reach
Preset temperature threshold value and melt, preventing arc ejector 3 is acted on to the side away from front electrode 7a by the elastic stress of flexible member 14
To ejection, the tripping electrode is promoted to be separated with the front electrode 7a, as shown in Figure 4.Fusing on the 6c of electrode welding end
Temperature-sensitive element 13 be released electrode through hole 17 and strike off, the insulation that abundance is formed between front electrode 7a and electrode welding end 6c is strong
Degree, the circuit connection thoroughly completely cut off between tripping electrode and front electrode 7a, prevent from producing during the ejection separation of tripping electrode moment
Electric arc formed electrical breakdown trigger short circuit overload.
If as shown in figure 3, exceeded by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode preset
Threshold value when, the 6b moment vaporization that fuses of cut-offfing thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, preventing arc bullet
Emitter 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 with
With preventing arc ejector 3 away from electrode welding end 6c, as shown in Figure 5.In this way, shape between electrode welding end 6c and flexible lamp pole piece 6a
Into the dielectric strength of abundance, thoroughly prevent electric arc caused by flexible lamp pole piece 6a disjunctions from forming electrical breakdown；Moment is elongated simultaneously
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 departs from moment, and sufficient dielectric strength is remained between tripping electrode through hole 17.
Embodiment 2：
A kind of as shown in fig. 6, another embodiment of lightning protection device based on electric discharge tubular type sensing element of the present invention.Should
The embodiment structure and usage similar to most of component in embodiment 1, the main distinction are：
Fire-retardant arc quenching material is not filled with the 3rd described cavity 1a, and surge protection device is free of remote signalling alarm device
4；The both ends of the flexible conductor 12 are electric with the flexible lamp pole piece 6a and first respectively by way of metal alloy solder spot welding
Pole leading foot the inner 8b forms circuit connection；Described instruction device 11 is mechanical indication means.
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, two external pins are connected in phase line and ground wire,
Now, instruction device 11 contracts in indication window 2a, as the normal operating conditions of surge protection device.
When piezo-resistance caused by leakage current caused by short-circuit overload current and its shelf-life aging on circuit pressure-sensitive electricity
Temperature rise is hindered, this temperature is delivered on front electrode 7a, promotes temperature-sensitive element 13 thereon to reach preset temperature threshold value and melt,
Preventing arc ejector 3 launches to the direction away from front electrode 7a, final instruction device 11 stretch out indication window 2a and be obstructed it is static,
This completes a mechanical Indication of Losing Efficacy, as shown in Figure 7.Now, tripping electrode through hole 17 and electrode welding end 6c
Between and front electrode 7a and tripping electrode through hole 17 between be respectively formed sufficiently large dielectric strength, thoroughly completely cut off dropout electricity
Circuit connection between pole and front electrode 7a.
When exceeding preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode,
The 6b moment vaporization that fuses of cut-offfing thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, and preventing arc ejector 3 is to remote
Direction ejection from front electrode 7a, final instruction device 11 stretch out indication window 2a and are obstructed static, and this completes one
Individual mechanical Indication of Losing Efficacy, as shown in Figure 8.Now, between electrode welding end 6c and tripping electrode through hole 17 and thread off electricity
Sufficiently large dielectric strength is respectively formed between pole through hole 17 and flexible lamp pole piece 6a, has thoroughly completely cut off flexible lamp pole piece 6a and front
Circuit connection between electrode 7a.
Embodiment 3：
A kind of as shown in figure 9, another embodiment of lightning protection device based on electric discharge tubular type sensing element of the present invention.Should
The embodiment structure and usage similar to most of component in embodiment 1, 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；Remote signalling breach 2b is covered with outside, remote signalling alarm device 4 is arranged in enclosing cover 2, and it alerts leading foot 4a and stretched out outside enclosing cover 2.
When using surge protection device in the power supply system, two external pins are connected on phase line and the neutral conductor or ground wire,
Now, the switch of remote signalling alarm device 4 is not oppressed by external carbuncle, as the normal operating conditions of surge protection device.
As shown in figure 9, if voltage sensitive element 7 is because of leakage caused by short-circuit overload current and its shelf-life aging on circuit
Electric current causes the temperature rise of voltage sensitive element 7, and this temperature is delivered on front electrode 7a, promotes temperature-sensitive element 13 thereon to reach
Preset temperature threshold value and melt, preventing arc ejector 3 is acted on to the side away from front electrode 7a by the elastic stress of flexible member 14
To ejection, the tripping electrode is promoted to be separated with the front electrode 7a, as shown in Figure 10.Fusing on the 6c of electrode welding end
Temperature-sensitive element 13 be released electrode through hole 17 and strike off, the insulation that abundance is formed between front electrode 7a and electrode welding end 6c is strong
Degree, the circuit connection thoroughly completely cut off between tripping electrode and front electrode 7a, prevent from producing during the ejection separation of tripping electrode moment
Electric arc formed electrical breakdown trigger short circuit overload.
If as shown in figure 9, exceeded by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode preset
Threshold value when, the 6b moment vaporization that fuses of cut-offfing thereon causes flexible lamp pole piece 6a and electrode welding end 6c to separate, preventing arc bullet
Emitter 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 with
With preventing arc ejector 3 away from electrode welding end 6c, as shown in figure 11.In this way, between electrode welding end 6c and flexible lamp pole piece 6a
Sufficient dielectric strength is formed, thoroughly prevents electric arc caused by flexible lamp pole piece 6a disjunctions from forming electrical breakdown；Moment draws simultaneously
Grow and blow because of electric arc caused by flexible lamp pole piece 6a and the 6c disjunctions of electrode welding end, when preventing moment from fusing and launching separation
Caused 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, the end of preventing arc ejector 3 to remote signalling alert
The switch of device 4 cause compressing and it is static, promote its on off state to change.A mechanical failure was so both completed
Instruction, while the remote signalling electric signal of the surge protection device shielding failure is sent out again.
Claims (9)
1. it is a kind of based on electric discharge tubular type sensing element lightning protection device, including housing, preventing arc component, voltage-sensitive component, response open
Close component and electrode lead-out pins；It is characterized in that：Described housing includes inner casing (1) and enclosing cover (2)；Inner casing is provided with electrode
Hole；Described inner casing (1) is engaged with enclosing cover (2) by way of lock；Described preventing arc component include 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
Including temperature-sensitive element (13), front electrode (7a) and tripping electrode；Described tripping electrode by flexible lamp pole piece (6a), cut-off
Position (6b) and electrode welding end (6c) is formed, and flexible lamp pole piece (6a), electrode welding end (6c) and to cut-off position (6b) composition electric
Road connects；Described electrode lead-out pins include flexible conductor (12), first electrode leading foot (8) and second electrode leading foot (9)；Institute
The firm connection of flexible lamp pole piece (6a) of the preventing arc ejector (3) stated and tripping electrode；When inner casing (1) and enclosing cover (2) pass through lock
Three closed cavities are formed when the mode of button engages, described three closed cavities are respectively the first cavity (1b), the second cavity
(1c) and the 3rd cavity (1a), wherein the first cavity (1b) is located at the same side of inner casing with the 3rd cavity (1a)；Described second
Cavity (1c) is located at the opposite side of inner casing.
A kind of 2. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described electricity
Pressure-sensitive sensing unit (7) is arranged in the second cavity (1c)；Described preventing arc component is arranged in the first cavity (1b), and described is anti-
Arc ejector (3) both sides are provided with two wing arms (10)；Dividing plate is provided between the 3rd described cavity (1a) and the first cavity (1b),
Described dividing plate is provided with tripping electrode through hole (17)；Described tripping electrode through hole (17) is electrode welding end (6c) and cut-offs position
The passage that (6b) stretches out；Described electrode welding end (6c) and cut-off position (6b) and reach the 3rd chamber through tripping electrode through hole (17)
In body (1a)；Both sides in described the first cavity (1b) are additionally provided with the chute (5) of preventing arc ejector (3), described chute (5)
Socket-connected with the wing arm (10) of preventing arc ejector (3)；Described flexible member (14) is socketed in chute (5) bottom；Described is anti-
Arc ejector (3) is biased by flexible member (14), and the front end of the wing arm (10) of preventing arc ejector (3) and flexible member (14) phase
Socket.
A kind of 3. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described electricity
Pressure-sensitive sensing unit (7) tow sides are provided with metal electrode film, and one of metal electrode film is provided with backplate (7b)；It is described
Backplate (7b) be placed in the second cavity (1c)；Another metal electrode film is provided with front electrode (7a), it is described just
Face electrode (7a) is reached in the 3rd cavity (1a) through electrode hole (16) by the second cavity (1c), on described front electrode (7a)
It is additionally provided with slotted eye (7c), the setting corresponding with slotted eye (7c) of described tripping electrode through hole (17)；When the preventing arc ejector (3)
Dividing plate with described the 3rd cavity (1a) and the first cavity (1b) is touched, and the electrode welding end (6c) is stretched with cut-offfing position (6b)
When going out tripping electrode through hole (17), the electrode welding end (6c) is corresponding with the position of slotted eye (7c).
A kind of 4. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described
It is additionally provided with slot (15) in one cavity (1b), the side angle in second cavity (1c) is provided with neck (18)；The first described electricity
Pole leading foot (8) extends to inner casing (1) outside by slot (15) from the first cavity (1b), described second electrode leading foot (9)
Inner casing (1) is extended to outside from the second cavity (1c) by neck (18)；The both ends of described flexible conductor (12) respectively with it is described
Flexible lamp pole piece (6a) forms circuit with first electrode leading foot inner (8b) and connected, described backplate (7b) and the second electricity
Pole leading foot inner (9b) forms circuit connection；First electrode leading foot outer end (8a) and second electrode leading foot outer end (9a) are stretched
Go out inner casing (1) and form two external pins outside.
A kind of 5. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described electricity
After pole welding ends (6c) stretches out tripping electrode through hole (17) and slotted eye (7c), pass through temperature-sensitive element (13) and front electrode (7a) tin
Weldering forms circuit connection.
A kind of 6. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described base
In instruction device (11) and instruction that the lightning protection device of electric discharge tubular type sensing element also includes indicating the surge protection device state
The remote signalling alarm device (4) of the surge protection device state；Described instruction device (11) is electric instruction device or mechanical finger
Showing device；And indication window (2a) and remote signalling breach (2b) are provided with enclosing cover (2)；Described remote signalling alarm device (4) is also set
There is alarm leading foot (4a).
A kind of 7. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described heat
Quick element (13) is meltable conducting polymer；Described cut-offs the metal alloy material that position (6b) is instant vaporization after a kind of fusing
Material.
A kind of 8. lightning protection device based on electric discharge tubular type sensing element according to claim 1, it is characterised in that：Described electricity
Pressure-sensitive sensing unit (7) is electric discharge tubular type sensing element.
9. a kind of application of lightning protection device based on electric discharge tubular type sensing element according to any one of claims 1 to 8, its feature
It is：When using surge protection device in the power supply system, two external pins are connected to phase line and the neutral conductor or ground
On line；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 circuit in series connects and has close thermal coupling；Described responding to switch component and voltage-sensitive component string
Connection forms normally closed working condition, and the switch of remote signalling alarm device (4) is not oppressed by external carbuncle, surge protection device normal work
State；
When voltage sensitive element (7) caused by leakage current caused by short-circuit overload current and its shelf-life aging on circuit voltage
Sensing element (7) temperature rise, this temperature are delivered on front electrode (7a), promote temperature-sensitive element (13) thereon to reach preset temperature
Spend threshold value and melt, preventing arc ejector (3) is acted on to the side away from front electrode (7a) by the elastic stress of flexible member (14)
To ejection, tripping electrode launches together with preventing arc ejector (3), promotes the tripping electrode and the front electrode (7a) wink
Between separate；Meanwhile prevent electric arc caused by the ejection separation of tripping electrode moment from forming electrical breakdown and triggering short circuit overload；
It is described when exceeding preset threshold value by the transient surges overvoltage, overcurrent or short-circuit overload current of tripping electrode
Position (6b) moment fusing vaporization of cut-offfing make the flexible lamp pole piece (6a) and the electrode welding end (6c) separation, it is while described
Preventing arc ejector (3) is acted on to the quick bullet in direction away from the front electrode (7a) by the elastic stress of flexible member (14)
Penetrate, the flexible lamp pole piece (6a) of tripping electrode launches together with preventing arc ejector (3), when preventing moment from fusing and launching separation
Caused electric arc forms electrical breakdown and triggers short circuit overload.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710844491.1A CN107465179A (en) | 2017-09-19 | 2017-09-19 | A kind of lightning protection device and its application based on electric discharge tubular type sensing element |
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|---|---|---|---|
| CN201710844491.1A CN107465179A (en) | 2017-09-19 | 2017-09-19 | A kind of lightning protection device and its application based on electric discharge tubular type sensing element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051909A (en) * | 2018-02-23 | 2020-04-21 | 欧姆龙株式会社 | Arc discharge detection device |
-
2017
- 2017-09-19 CN CN201710844491.1A patent/CN107465179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051909A (en) * | 2018-02-23 | 2020-04-21 | 欧姆龙株式会社 | Arc discharge detection device |
| US11313907B2 (en) | 2018-02-23 | 2022-04-26 | Omron Corporation | Arc discharge detection device |
| CN111051909B (en) * | 2018-02-23 | 2022-04-29 | 欧姆龙株式会社 | Arc discharge detection device |
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Application publication date: 20171212 |