CN106298390A - A kind of novel surge protection device - Google Patents
A kind of novel surge protection device Download PDFInfo
- Publication number
- CN106298390A CN106298390A CN201610909279.4A CN201610909279A CN106298390A CN 106298390 A CN106298390 A CN 106298390A CN 201610909279 A CN201610909279 A CN 201610909279A CN 106298390 A CN106298390 A CN 106298390A
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- China
- Prior art keywords
- electrode
- arc
- assembly
- surge protection
- protection device
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Classifications
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
Abstract
The invention discloses a kind of novel surge protection device; including shell, voltage-sensitive assembly, keep away arc barrier assembly, electrode foot assembly and thermal response switch assembly; wherein keeping away arc barrier assembly and include keeping away arc assembly and isolator, thermal response switch assembly includes temperature-sensitive element body.Present invention transient surges overvoltage in suppression circuit, voltage-sensitive assembly and thermal response switch assembly have close thermal coupling, when the factors such as the transient surges overvoltage on circuit make voltage-sensitive assembly persistent fever heat up, because of the thermal coupling response of temperature-sensitive element body, separation is launched in action to thermal response switch assembly, kept away arc assembly simultaneously and hidden isolation, electric arc is produced when effectively preventing thermal response switch assembly action, avoid the fire flammability issues caused because of surge protection device short circuit overload, improve electronics, the safety of electrical equipment work, reliability.
Description
Technical field
The present invention relates to a kind of circuit protection device, particularly relate to a kind of novel surge protection device.
Background technology
Surge protector or surgesuppressor (surge suppressor), be also surge protection device, be one be each
Plant sensitive or expensive electronic equipment, as the electronic component on computer and communication relevant device provides the guarantor of overvoltage security protection
Protection unit.The varistor that existing surge protection device is conventional is to include by Zinc oxide particles and complicated intracrystalline granular materials
The electronic device constituted, it is a non-linear to voltage device, and unique voltage-current characteristic is the ideal of sensitive electronic circuit
Protection device, but its material composition determines and easily deteriorates and catching fire from when overvoltage short circuit is transshipped, even draws
Play electrical equipment fire.So, it would be desirable to a kind of safer sensitiveer surge protection device, can be applicable to such as communication, electricity
In the protection of the surge overvoltage short circuit overload on the contour precise control circuit of brain, TV, air-conditioning, can be quickly when short circuit is transshipped
Cut off and separate surge protection device, it is to avoid cause the fire incident of electrical equipment.
The surge protector of current existing band arc-suppression function or surgesuppressor, it is commonly used covers and breaking arc
Method arc extinguishing, as Chinese patent number 201310123391.1 discloses a kind of surge protector and Chinese patent number
201410737817.7 designs disclosing highly reliable Thermal protection type piezoresistor, the switch electricity of this kind of thermal response switch assembly
Pole is when heat departs from, and its separating action uses and covers and the mode of breaking arc, and the preventing arc mechanism in the method need to have one
Individual stroke get to position cover, breaking arc, it is impossible to make the sky of preventing arc mechanism access switch electrode in the switch time of releasing
Gap with breaking arc, so, moment transshipped by varistor under these conditions in a large number, overheated and finally cause fire, blast,
This catastrophic destruction can burn neighbouring sensitive electronic equipment and element, thus causes the collapse of whole electronic system to damage.
Summary of the invention
It is an object of the invention to overcome the existing surge protection device defect when fault reconstruction and deficiency, it is provided that
A kind of novel surge protection device, it can be effectively prevented from causing fire because electric arc produces, can fundamentally stop fire
Calamity thus ensure the safety of electrical equipment.
For achieving the above object, the present invention is achieved by the following technical solutions.
The present invention provides a kind of novel surge protection device, including keeping away arc barrier assembly, voltage-sensitive assembly, thermal response
Switch module, electrode foot assembly and the shell being made up of housing and side cover.Keep away arc barrier assembly and include isolator and by keeping away
What arc device and flexible member formed keeps away arc assembly；Voltage-sensitive assembly is made up of at least one voltage sensitive element；Thermal response is opened
Close assembly and include temperature-sensitive element body, front electrode exit and successively by electrode front end, hot fuse part and electrode end institute structure
The float electrode become；Electrode foot assembly includes the first electrode foot, the second electrode foot, the first conductor and the second conductor.Wherein voltage
Sensing element is varistor or the voltage-sensitive components and parts such as discharge tube or discharging gap.
Hot fuse part is thermal fuse-link structure or is made up of, when passing through hot melt the metal alloy compositions of instant vaporization after fusing
When the disconnected transient surges overvoltage in portion, overcurrent or short circuit overcurrent exceed preset threshold values, hot fuse part can fuse vaporization,
Thus the electrode front end of the electrode that innervates separates with electrode end, i.e. realize surge protection device and possess at short circuit overcurrent
The function of the quickest disjunction.
Temperature-sensitive element body is meltable metal alloy solder or conducting polymer, and the threshold temperature of its fusing can be preset,
When reaching preset threshold temperature, temperature-sensitive element knows from experience fusing rapidly.
The cavity of an insulation is formed with side cover therein when housing engages.Isolator is placed in housing, and cavity is exhausted
Edge is also separated into two dielectric chamber, in isolator front for the first dielectric chamber, at the isolator back side for the second insulation
Cavity.Keeping away arc assembly and thermal response switch assembly is arranged in the first dielectric chamber, voltage sensitive element is arranged on the second insulation
In cavity.
Keeping away arc device and be provided with spring groove, insulation shielding room and wing arm, wherein spring groove connects in keeping away arc device with insulation shielding room
Logical.Isolator front is provided with guide-track groove, keeps away arc device and is slided in guide-track groove by wing arm, enhances and keeps away stablizing when arc device slides
Property.
The tow sides of voltage sensitive element are provided with metal electrode film, and front electrode exit is located at one of them metal electricity
On pole piece, another metal electrode film is provided with backplate exit.Front electrode exit and backplate exit are equal
Reached in the first dielectric chamber by the second dielectric chamber.Front electrode exit is additionally provided with the groove that power pole front end is stretched out
Hole, slotted eye is in the first dielectric chamber.It is provided with the through hole that power pole front end is stretched out, when keeping away arc device and front keeping away arc device front end
When electrode leads to client touches on isolator front, through hole is relative with slotted eye, with guarantee electrode front end can also cross through hole and
Slotted eye.
Keeping away and be additionally provided with steam vent on arc device, steam vent communicates with insulation shielding room；When float electrode is placed on insulation shielding
Indoor, and when through hole is stretched out in electrode front end, hot fuse part is corresponding with the position of steam vent, to guarantee that hot fuse part is in short circuit mistake
When carrying fusing vaporization under electric current, its blast produced can be released by steam vent, can reach to utilize blast moment to draw simultaneously
Grow and blow the effect of electric arc.
The present invention further illustrates, and indicates the instruction of this surge protection device duty to fill keeping away to be additionally provided with on arc device
Put.The relevant position of housing is provided with the indication window for showing instruction device action state.In surge protection device work
When making, float electrode is arranged on the insulation shielding indoor keeping away arc device, and through hole and slotted eye, front electrode exit are stretched out in electrode front end
Electrically connected by temperature-sensitive element body melting welding composition with electrode front end, and there is close thermal coupling.Flexible member is elastic by first
Part and the second elastic component composition.First elastic component is arranged in the first dielectric chamber, keeps away arc device by the first spring biases；Second
Elastic component is arranged in spring groove, and electrode end is by the second spring biases.Metal alloy solder is passed through at the two ends of the first conductor
The mode of soldering or spot welding electrically connects with the first electrode foot and backplate exit composition respectively；The two ends of the second conductor are passed through
The mode of metal alloy solder soldering or spot welding electrically connects with the second electrode foot and electrode end composition respectively.Both sides at housing
It is provided with outside electrode installation position, the first electrode foot and the second electrode foot be fixedly mounted on by electrode installation position respectively and become on housing
Receiving electrode foot, and these two external pins are connected respectively on phase line and the neutral conductor or ground wire.Thus thermal response switch assembly
Connect with voltage-sensitive assembly and form normally closed duty, be surge protection device normal operating conditions.
Isolator front is additionally provided with preventing arc insulated gate and Chu Na insulation tank.Preventing arc insulated gate is by the first dielectric chamber
Backplate exit region is isolated into dielectric chamber.Between phase different electrode, i.e. form electrical isolation, it is to avoid different electricity
Pole because of in the first dielectric chamber air ionization puncture and cause short circuit.Storage is received insulation tank and is made up of multiple independent grooves, and
Storage is received insulation tank and is arranged on around front electrode exit extended position.Storage is received insulation tank and is enhanced front on the first dielectric chamber
Dielectric strength around electrode leads to client extended position, and when temperature-sensitive element body is reaching the fusing of preset threshold temperature, heat
During responding to switch components apart, storage is received insulation tank and is stored in groove by the solder of splashing, and forms spacer insulator, stops because of electricity
Arc stretching formation conducts.
Further, the technology avoided electric arc to produce and be quickly dielectrically separated from when fault reconstruction of the present invention illustrates such as
Under:
If voltage sensitive element causes electricity because of the leakage current of the short-circuit overcurrent on circuit and the aging generation of its shelf-life
Pressure-sensitive sensing unit temperature rise, in this temperature transfer to front electrode exit, promotes temperature-sensitive element body thereon to reach preset temperature
Bottom valve value and melt, electrode end under the elastic stress effect of the second elastic component, electric arc produce before by rapid for electrode front end
Launch and be dielectrically separated from the insulation shielding keeping away arc device indoor, keep away the elastic stress effect by the first elastic component of the arc device to far simultaneously
Launch from the direction of front electrode exit.The temperature-sensitive element body of the fusing on electrode front end is struck off by through hole, now front
Form the dielectric strength of abundance between electrode leads to client and electrode front end, thoroughly completely cut off float electrode and front electrode exit
Between electrical connection.
Another kind of situation, if exceeding preset by transient surges overvoltage, overcurrent or the short circuit current of float electrode
During threshold values, fusing vaporization of hot fuse part moment thereon causes electrode front end to separate with electrode end, and electrode end is by the simultaneously
The elastic stress effect of two elastic components is launched to the direction away from front electrode exit, keeps away the arc device elasticity by the first elastic component
Stress effect is launched to the direction away from front electrode exit, and wherein electrode end is dielectrically separated from the insulation shielding keeping away arc device
Indoor.So, form the dielectric strength of abundance between electrode front end and electrode end, thoroughly prevent electrode front end and electrode end
The electric arc produced when disjunction forms electrical breakdown；Blast at its hot fuse part another is released by steam vent, simultaneously
The electric arc that moment produces when elongating and blow because of electrode front end and electrode end disjunction.
Now the duty of thermal response switch assembly by normally closed be changed into normally opened, during indicate device send out with keeping away arc device
Raw displacement, can be observed its change different from normal operating conditions (being such as changed into red display) from indication window, thus refers to
Show surge protection device shielding failure.
Compared with prior art, the distinguishing feature that the present invention possesses:
What 1, the surge protection device of the present invention had a high breaking keeps away arc ability, can fast and safely isolating and protecting device, keep away
Exempt from fire to occur.
2, hiding for float electrode insulation can also not produced at electric arc by described arc device of keeping away when float electrode action separates
Time just already formed with effect insulation clearance, thoroughly prevent electric arc from producing；Or can be disconnected after insulation arc at hot fuse portion.
3, the surge protection device of the present invention strengthens mechanism by insulation measures such as preventing arc insulated gate and Chu Na insulation tanks
The isolation of electric arc during separation, more effectively avoiding the electric arc that causes because heat departs to cause, that surge protection device secondary turns on is hidden
Suffering from, improve the safety of electric equipment operation, this is not available for general surge protector.
Accompanying drawing explanation
Fig. 1 is that in the embodiment of the present invention 1, the structure of surge protection device disassembles schematic diagram；
Fig. 2 is the structural representation that in the embodiment of the present invention 1, isolator is combined with varistor；
Fig. 3 is the structural representation of surge protection device normal operating conditions in the embodiment of the present invention 1；
Fig. 4 is the structural representation in the embodiment of the present invention 1 after the dropout of surge protection device fault heat；
Fig. 5 is the structural representation after surge protection device fault current cut-offs in the embodiment of the present invention 1；
Fig. 6 is the structural representation of float electrode in the embodiment of the present invention 2；
Fig. 7 is the structural representation of surge protection device normal operating conditions in the embodiment of the present invention 2.
Reference: 1-housing, 1a-electrode installation position, 1b-indication window, 2-isolator, 2a-isolator front, 2b-
The isolator back side, 21-guide-track groove, 22-preventing arc insulated gate, 23-storage receives insulation tank, 3a-the first elastic component, 3b-the second stage clip, 4-
Keeping away arc device, 4a-through hole, 4b-steam vent, 41-spring groove, 42-insulation shielding room, 43-wing arm, 44-indicates device, the pressure-sensitive electricity of 5-
Resistance, 51-front electrode exit, 51a-slotted eye, 52-backplate exit, 6-float electrode, 6a-electrode front end, 6b-heat
Fuse part, 6c-electrode end, 7-temperature-sensitive element body, 8-the first electrode foot, 8a-the first copper conductor, 9-the second electrode foot, 9a-
Two copper conductors, 10-side cover.
Detailed description of the invention
The present invention is described in more detail with detailed description of the invention below in conjunction with the accompanying drawings, but protection scope of the present invention
It is not limited solely to following preferred embodiment, every strengthens current interruption by insulation shielding float electrode in the present invention
The technical scheme of insulation effect, the most within the scope of the present invention；In the present invention surge protection device to voltage sensitive element,
The material type of the second elastic component, the first conductor and the second conductor does not limits, in following detailed description of the invention, with voltage
Sensing element 5 is varistor 5, and the second elastic component 3b is the second stage clip 3b, and the first conductor 8a is the first copper conductor 8a, and second leads
As a example by body 9a is the second copper conductor 9a, described in detail the structure of surge protection device of the present invention.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of novel surge protection device, including housing 1, isolator 2, two first elasticity
Part 3a, two the second stage clip 3b, keep away 4, varistor 5 of arc device, temperature-sensitive element body the 7, first electrode foot the 8, second electrode foot
9, the first copper conductor 8a, the second copper conductor 9a, side cover 10 and successively by electrode front end 6a, hot fuse part 6b and electrode end 6c
The float electrode 6 constituted.First elastic component 3b is stage clip the most in the present embodiment；Hot fuse part 6b is by moment after fusing
The metal alloy compositions of vaporization is constituted.
Two metal electrode films of varistor 5 are welded to positive and negative two of varistor 5 by the way of soldering
In silver electrode surface, one of them metal electrode film has front electrode exit 51, front electrode exit 51 is also opened
There is the slotted eye 51a that power pole front end 6a stretches out；Another metal electrode film extends the part of bending from its plane and defines the back of the body
Face electrode leads to client 52.Housing 1 is closed-in construction, can form an insulation sky with side cover 10 therein when housing 1 engages
Chamber.Isolator 2 is placed in housing 1, and this cavity dielectric separation is become two dielectric chamber, at isolator front 2a for first
Dielectric chamber, at isolator back side 2b for the second dielectric chamber.When varistor 5 is placed in the second dielectric chamber, just
Face electrode leads to client 51 and backplate exit 52 both pass through isolator 2 and reach in the first dielectric chamber, now slotted eye 51a
Also in the first dielectric chamber.On the 2a of isolator front, the both sides of front electrode exit 51 extended position are respectively provided with one and lead
Rail groove 21, the long channel opening of two guide-track grooves 21 is relative.Isolator front 2a is additionally provided with preventing arc insulated gate 22 and Chu Na exhausted
Edge groove 23.Preventing arc insulated gate 22 is two pieces of independent diaphragm structures, and it is connected with a guide-track groove 21 in left side, insulate first
On cavity, backplate exit 52 region is dielectrically separated from.Storage is received insulation tank 23 and is made up of three independent grooves, and it sets
Put the lower section at front electrode exit 51 extended position.
Keeping away arc device 4 is the box like structure with cavity, and its cavity is two spring grooves 41 and an insulation shielding room 42.Its
Middle spring groove 41 is connected with insulation shielding room 42, and spring groove 41 is distributed in the both sides of insulation shielding room 42.Before keeping away arc device 4
Wall is provided with the through hole 4a that power pole front end 6a stretches out, and is respectively provided with a wing arm 43 that can insert guide-track groove 21 keeping away arc device 4 both sides.
When front electrode exit 51 stretches out isolator front 2a, keep away arc device 4 and slided on guide-track groove 21 by its two flanks arm 43
Until touching front electrode exit 51, now through hole 4a is corresponding with the position of slotted eye 51a.Keep away and be additionally provided with aerofluxus on arc device 4
Hole 4b, steam vent 4b communicate with insulation shielding room 42.In float electrode 6 is hidden in insulation shielding room 42, electrode front end 6a stretches
When going out through hole 4a, hot fuse part 6b is the most corresponding with the position of steam vent 4b.For indicating this surge protection device duty
Instruction device 44 be also disposed at keeping away on arc device 4, instruction device 44 be a baffle arrangement.The relevant position of housing 1 is provided with
It is used for showing the indication window 1b of instruction device 44 operating state.
As it is shown on figure 3, two the first elastic component 3a are individually positioned in two guide-track grooves 21, keep away arc device 4 by two flanks
Arm 43 inserts in guide-track groove 21 until touching front electrode exit 51, and now two flank arms 43 oppress two the first elastic component 3a
Making it is compressive state.Two the second stage clip 3b are individually positioned in two spring grooves 41, and float electrode 6 inserts insulation shielding room
Until electrode front end 6a stretches out through hole 4a and slotted eye 51a in 42, now electrode end 6c oppress two the second stage clip 3b make its in
Compressive state.Electrode front end 6a is electrically connected with front electrode exit 51 melting welding formation by temperature-sensitive element body 7；First copper conductor
The two ends of 8a electrically connect with the first electrode foot 8 and backplate exit 52 composition by the way of spot welding respectively；Second bronze medal is led
The two ends of line 9a electrically connect with the second electrode foot 9 and electrode end 6c composition by the way of spot welding respectively, thus these conductance
Body is connected with varistor 5 and forms normally closed switch.Electrode installation position 1a, the first electrode foot 8 and it is provided with in the both sides of housing 1
Two electrode foot 9 are fixedly mounted on housing 1 by electrode installation position 1a respectively becomes external electrode foot.Use in the power supply system
During surge protection device, external for the two pin is connected on phase line and the neutral conductor or ground wire.Now instruction device 44
Position corresponding with indication window 1b, be the normal operating conditions of surge protection device.
As shown in Figure 4, if varistor 5 is because of the short-circuit overcurrent on circuit and the leakage current of the aging generation of its shelf-life
Cause varistor 5 temperature rise, in this temperature transfer to front electrode exit 51, promote temperature-sensitive element body 7 thereon to reach
Preset temperature threshold value and melt, electrode front end 6a is launched rapidly also by electrode end 6c by the elastic stress effect of the second stage clip 3b
Be dielectrically separated from insulation shielding room 42, simultaneously wing arm 43 by the elastic stress effect of the first elastic component 3a promote to keep away arc device 4 to
Direction away from front electrode exit 51 is launched, and finally keeps away arc device 4 and is obstructed static.During indicate device 44 and indication window
The position of 1b is subjected to displacement, and causes it is observed that color changes on indication window 1b, i.e. complete one mechanical
Indication of Losing Efficacy.Now, between electrode front end 6a and front electrode exit 51, form sufficiently large insulation clearance, thoroughly isolation
Electrical connection between float electrode 6 and front electrode exit 51.
If another kind of situation is as it is shown in figure 5, pass through transient surges overvoltage, overcurrent or the short circuit current of float electrode 6
When exceeding preset threshold values, fusing vaporization of hot fuse part 6b moment thereon causes electrode end 6c to separate with electrode front end 6a,
Simultaneously electrode end 6c and keep away arc device 4 respectively by the second stage clip 3b and the first elastic component 3a elastic stress effect simultaneously to away from
The direction of front electrode exit 51 is launched, and finally keeps away arc device 4 and is obstructed static.During indicate device 44 and indication window 1b's
Position is subjected to displacement, and causes it is observed that color changes on indication window 1b, i.e. completes a mechanical inefficacy
Instruction.Now, form sufficiently large dielectric strength between electrode front end 6a and electrode end 6c, thoroughly completely cut off electrode end 6c
And the electrical connection between front electrode exit 51.
Embodiment 2:
A kind of another embodiment of the novel surge protection device of the present invention.This embodiment has and embodiment 1
The middle major part similar structure of assembly and usage, differ primarily in that the first elastic component 3a is different with the structure of float electrode 6.
As shown in Figure 6, it is a kind of structure of float electrode 6 in the present embodiment.Electrode front end 6a, hot fuse part 6b and electrode
End 6c is the different parts of same electrode slice.The hottest fuse part 6b is a kind of thermal fuse-link structure, is special resistance to thunder
Electric fuse.
As it is shown in fig. 7, the first elastic component 3a is extension spring in the present embodiment.The two ends of the first elastic component 3a are connected to
On steam vent 4b and housing 1, keep away arc device 4 and inserted in guide-track groove 21 until touching front electrode exit by two flank arms 43
51, now the first elastic component 3a is extended state.Two the second stage clip 3b are individually positioned in two spring grooves 41, float electrode
Until electrode front end 6a stretches out through hole 4a and slotted eye 51a in 6 insert insulation shielding rooms 42, now electrode end 6c compressing two the
Two stage clip 3b make it be compressive state.Electrode front end 6a forms electricity by temperature-sensitive element body 7 and front electrode exit 51 melting welding
Connect；The two ends of the first copper conductor 8a by the way of metal alloy solder soldering respectively with the first electrode foot 8 and backplate
Exit 52 constitutes electrical connection；The two ends of the second copper conductor 9a by the way of metal alloy solder soldering respectively with the second electrode
Foot 9 and electrode end 6c constitute electrical connection, thus these electric conductors are connected with varistor 5 and form normally closed switch.At housing 1
Both sides be provided with electrode installation position 1a, the first electrode foot 8 and the second electrode foot 9 are fixedly mounted on by electrode installation position 1a respectively
External electrode foot is become on housing 1.When using surge protection device in the power supply system, external for the two pin is connected respectively
In phase line and the neutral conductor or ground wire.Now the position of instruction device 44 is corresponding with indication window 1b, is surge protection dress
The normal operating conditions put.
Feature described in the various embodiments described above or feature combination can individualism, or can with in other embodiments
Feature or feature combination be combined with each other, and those skilled in the art can keep away arc device according to present invention employing and spacer structures is fast
In the case of speed keeps away the innovation and creation of arc insulation float electrode, above-described embodiment is made various modifications or changes the reality other
Execute example, be all belonging to protection scope of the present invention.
Claims (10)
1. a novel surge protection device, including:
Shell, including housing (1) and side cover (10)；
Keep away arc barrier assembly, including isolator (2) and by keeping away arc device (4) and flexible member forms keeps away arc assembly；
Voltage-sensitive assembly, including at least one voltage sensitive element (5)；
Electrode foot assembly, including the first electrode foot (8), the second electrode foot (9), the first conductor (8a) and the second conductor (9a)；
Thermal response switch assembly, including temperature-sensitive element body (7), front electrode exit (51) and by electrode front end (6a), heat
The float electrode (6) that fuse part (6b) and electrode end (6c) are constituted；
It is characterized in that: described arc device (4) of keeping away is provided with spring groove (41), insulation shielding room (42) and wing arm (43), and it is hit by a bullet
Spring groove (41) connects in keeping away arc device (4) with insulation shielding room (42)；
Described housing (1) forms the cavity of an insulation therein with side cover (10) when engaging；Described isolator (2) is put
In housing (1), described cavity is insulated and is separated into two dielectric chamber, at isolator front (2a) for the first insulated cavity
Body, at the isolator back side (2b) for the second dielectric chamber；Described keep away arc assembly and thermal response switch assembly to be positioned at first exhausted
In edge cavity；Described voltage sensitive element (5) is positioned at the second dielectric chamber；
Described isolator front (2a) is provided with guide-track groove (21), is the passage that slides of wing arm (43).
A kind of novel surge protection device the most according to claim 1, it is characterised in that:
Described voltage sensitive element (5) is varistor or discharge tube or discharging gap；Described voltage-sensitive unit
Part (5) tow sides are provided with metal electrode film, and described front electrode exit (51) is located on one of them metal electrode film,
Another metal electrode film is provided with backplate exit (52)；Described front electrode exit (51) and backplate are drawn
Go out end (52) to be reached in the first dielectric chamber by the second dielectric chamber；Front electrode exit (51) is provided with slotted eye (51a),
Slotted eye (51a) is in the first dielectric chamber；
Described arc device (4) front end of keeping away is provided with through hole (4a), is the passage that stretches out of electrode front end (6a)；Arc device (4) is kept away when described
When touching on isolator front (2a) with front electrode exit (51), through hole (4a) is corresponding with the position of slotted eye (51a)；
Described thermal response switch assembly is normally closed switch when normal operating conditions, and wherein said electrode front end (6a) is stretched out
Through hole (4a) and slotted eye (51a), electrically connected with front electrode exit (51) melting welding composition by temperature-sensitive element body (7)；
Described flexible member is made up of the first elastic component (3a) and the second elastic component (3b)；Described first elastic component (3a) is arranged
In the first dielectric chamber, keep away arc device (4) and biased by the first elastic component (3a)；Described second elastic component (3b) is arranged on spring groove
(41), in, electrode end (6c) is biased by the second elastic component (3b)；
The two ends of described the first conductor (8a) by the way of metal alloy solder soldering or spot welding respectively with the first electrode foot
(8) electrically connect with described backplate exit (52) composition；Metal alloy solder is passed through at the two ends of described second conductor (9a)
The mode of soldering or spot welding electrically connects with the second electrode foot (9) and described electrode end (6c) composition respectively；Described housing (1)
Both sides are provided with electrode installation position (1a)；Described first electrode foot (8) and the second electrode foot (9) are respectively by electrode installation position (1a)
It is fixed on housing (1) and becomes external electrode foot.
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
Described arc device (4) of keeping away is provided with steam vent (4b), and steam vent (4b) communicates with insulation shielding room (42)；When described flexible lamp
Pole (6) is placed in insulation shielding room (42), when electrode front end (6a) stretches out through hole (4a), and hot fuse part (6b) and steam vent
(4b) position is corresponding.
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
Described arc device (4) of keeping away is provided with the instruction device (44) indicating this surge protection device state；Phase in described housing (1)
Position is answered to be provided with indication window (1b).
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
Described isolator front (2a) is provided with preventing arc insulated gate (22), and preventing arc insulated gate (22) is by described first dielectric chamber
It is isolated into two dielectric chamber.
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
Described isolator front (2a) is provided with storage and receives insulation tank (23), and storage receives insulation tank (23) by multiple independent groove groups
Become, and store up and receive insulation tank (23) and be arranged on around front electrode exit (51) extended position.
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
When described temperature-sensitive element body (30) melts because reaching preset fusion temperature, electrode end (6c) is by the second elastic component
(3b) elastic stress effect promotes electrode front end (6a) to launch with front electrode external part (51) to separate, and by electrode front end
(6a) be dielectrically separated from insulation shielding room (42), keep away simultaneously arc device (4) by the first elastic component (3a) elastic stress effect to
Move in direction away from front electrode external part (51).
A kind of novel surge protection device the most according to claim 1 and 2, it is characterised in that:
Described hot fuse part (6b) exceedes its preset threshold values because of transient surges overvoltage, overcurrent or the short circuit current passed through
Time, the fusing vaporization of hot fuse part (6b) moment causes electrode front end (6a) and electrode end (6c) to separate, electrode end simultaneously
(6c) launched to the direction away from front electrode external part (51) by the elastic stress effect of the second elastic component (3b), keep away arc device
(4) launched to the direction away from front electrode external part (51) by the elastic stress effect of the first elastic component (3a), wherein electrode
End (6c) is dielectrically separated from insulation shielding room (42).
A kind of novel surge protection device the most according to claim 7, it is characterised in that:
Described temperature-sensitive element body (7) is meltable metal alloy solder or conducting polymer.
A kind of novel surge protection device the most according to claim 8, it is characterised in that:
Described hot fuse part (6b) is thermal fuse-link structure or is made up of the metal alloy compositions of instant vaporization after fusing.
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| CN201610909279.4A CN106298390A (en) | 2016-10-17 | 2016-10-17 | A kind of novel surge protection device |
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| CN106910663A (en) * | 2017-04-28 | 2017-06-30 | 湖南中普技术股份有限公司 | Surge protector and its guard method with pre- tripping function |
| CN110189965A (en) * | 2019-05-25 | 2019-08-30 | 乐清市亚亨电气有限公司 | A kind of safety insulating device after surge protector failure |
| WO2020038120A1 (en) * | 2018-08-20 | 2020-02-27 | 成都铁达电子股份有限公司 | Overvoltage protection circuit and protection device for lightning protection |
| WO2020233668A1 (en) * | 2019-05-22 | 2020-11-26 | 厦门赛尔特电子有限公司 | Novel thermal-protection varistor |
| WO2020233667A1 (en) * | 2019-05-22 | 2020-11-26 | 厦门赛尔特电子有限公司 | Overheating and overcurrent tripping device and surge protector |
| CN117254440A (en) * | 2023-09-21 | 2023-12-19 | 佛山市浦斯电子有限公司 | Surge suppression device with arc extinguishing function |
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| CN117254440A (en) * | 2023-09-21 | 2023-12-19 | 佛山市浦斯电子有限公司 | Surge suppression device with arc extinguishing function |
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Application publication date: 20170104 |