CN208674592U - Symmetric form AC/DC universal multilayer clearance lightning-proof device and its circuit structure - Google Patents

Abstract

The utility model discloses a kind of symmetric form AC/DC universal multilayer clearance lightning-proof device and its circuit structures, Y type symmetrical structure is overlapped using various sizes of multilayer gap, each current loop of formation includes by concatenated circuit between the small multilayer gap of several groups and most lamellar spacing；And the trigger circuit being made of capacitor is combined, cooperate double trip gear symmetrical structures, realizes quick thermal tripping disjunction, windows display status and counnter attack connection function；Effective solution how pcb board carry with ultra-thin, extra small, big through-flow, high-voltage applications, AC/DC universal, without afterflow, circuit reversal connection, function instruction the problem of, thus be more suitable for modern communications to lightning protection device requirement.

Description

Symmetric form AC/DC universal multilayer clearance lightning-proof device and its circuit structure

Technical field:

The utility model is a kind of multilayer clearance lightning-proof device, in particular to has symmetric form AC/DC universal multilayer gap anti- Thunder device and its circuit structure belong to lightning protection device field.

Background technique:

As communications industry rapidly develops, to the upcoming 5G epoch, the quick hair of terminal and mobile Internet business Exhibition proposes higher challenge to the evolution of mobile network, intelligent in order to reach the high speed of communication, just may require that more Densification mobile base station, these numerous mobile base stations by installation site requirement equipment have it is ultra-thin, extra small, easy to install, Easy to produce, high performance feature, more and more deep coverings, easily deployment, the miniaturization base station products that low energy consumption constantly gush thus Existing, minimizing onboard lightning protection device (hereinafter referred to as SPD) is exactly one of them.

It is well known that the installation of mostly guide rail plug-in SPD, this kind of SPD that the mobile base station of early stage uses are based on pressure-sensitive electricity Resistance, gap and gas-discharge tube principle, big with discharge capacity, functional status instruction replaces the features such as facilitating, but also simultaneously It is limited by structure and component, also there is biggish size simultaneously；With the further development of the communications industry, guide rail installation Plug-in SPD gradually by volume smaller PCB installation SPD substitution, PCB welding installation product still uses varistor gentle The design of body discharge tube eliminates guide rail and plug pedestal, facts proved that the demand of miniaturization may be implemented in PCB installing type SPD；With Application of the high voltage direct current in the communications industry, existing PCB installation is due to varistor and gas-discharge tube inherent parameters and size Limitation, will realize high through-flow and higher operating voltage, the size of varistor, which will will increase, to be thickened, the ruler of gas-discharge tube It is very little also to become larger with through-flow raising, it is difficult to realize miniaturization again using traditional varistor and gas-discharge tube.

Current PCB is the product designed based on varistor and gas-discharge tube with SPD, the area of varistor and logical Flow directly proportional, thickness and voltage are directly proportional, when voltage is higher and through-flow bigger, it is necessary to use thicker, bigger varistor Device is just able to achieve parameter request；And gas-discharge tube is generally mostly single discharging gap, maximum disadvantage is exactly arc extinguishing, discontinuously Flow problem generally can be used alternating current zero passage and carry out arc extinguishing for AC system, and for direct current system, due to single gap Conducting after arc voltage drop it is very low (only general more than ten volts), direct current afterflow can not be cut off, gas-discharge tube is caused to continue low electricity Resistance conducting causes to overheat and damage；Using varistor and gas-discharge tube series circuit, can cut off under certain conditions Afterflow, still, voltage and through-current capability will be limited by piezoresistor thickness and area, cannot accomplish the size of very little.

Based on the above-mentioned fact, it is contemplated that the complicated state of field connection, a kind of arrester circuit with target, There are two the general SPD of lightning protection component series connection symmetric design and ac and dc systems also increasingly to seem heavy between each electrode It wants, for this purpose, the communications industry requires SPD that can meet biggish through-flow, higher operating voltage, wiring under the size environment of very little Symmetry (i.e. power supply L/+/N/- wiring exchange), make promotion in function instruction and the technical indicators such as ac and dc systems are general And improvement.

Summary of the invention:

In order to solve the above technical problems, the technical program aims to overcome that the deficiencies in the prior art, one kind is developed Symmetric form AC/DC universal multilayer clearance lightning-proof device, using various sizes of multilayer gap overlap Y type symmetric circuit, formation it is every A current loop includes by concatenated circuit between the small multilayer gap of several groups and most lamellar spacing；And it combines and is made of capacitor Trigger circuit cooperates double trip gear symmetrical structures, realizes quick thermal tripping disjunction, windows display status and anti-reverse function Energy；Effective solution how pcb board carry with it is ultra-thin, extra small, greatly through-flow, high-voltage applications, AC/DC universal, without afterflow, electricity Road reversal connection, function instruction the problem of, thus be more suitable for modern communications to lightning protection device requirement.

The purpose of the technical program, will be realized through the following technical scheme:

Symmetric form AC/DC universal multilayer clearance lightning-proof device, including between outer housing, pedestal, electrode L/+/N/-, small multilayer Gap, most lamellar spacing, protection ground electrode PE, screw, trigger circuit plate, clamping piece, partition, spring, dropout part, current bar, institute Small multilayer gap, the most lamellar spacing stated are made of small―gap suture electrode and small insulating trip, wide arc gap electrode and big insulating trip respectively, It is characterized by: stacking the laminated construction peace to form a Y shape with the small multilayer gap of several groups and its corresponding most lamellar spacing Loaded on pedestal, the wide arc gap electrode of intersection is constituted between wide arc gap electrode and small―gap suture electrode or corresponding insulating trip Target；The small multilayer gap and corresponding most lamellar spacing two sides have clamping piece, and top has a triggering electricity Road plate, the electrode L/+/N/- and protection ground electrode PE are fixed on clamping piece both ends by screw；By partition, spring, tripping Part, current bar form a trip gear, and the dropout part with sliding slot is fixed by snap in clamping piece one end；Several springs It is embedded into dropout part sliding slot after compression, corresponding current bar is assembled in the dropout part, between current bar and dropout part It is also configured with partition, described current bar one end is connected on electrode L/+/N/- using eutectic welding soldering, other end extraction electrode Pin；The trigger circuit plate is fixed on the supporting element of pedestal by screw, the electrode L/+/N/- and small multilayer Clearance surface forms welding heat release point, and any performance loop occurred between the electrode L/+/N/-, protection ground electrode PE After load leads to overheat, heat will be transmitted to welding heat release point, after reaching welding heat release point melting point temperature, weld thermal tripping Point scolding tin melts, and the current bar is separated under own resilient effect with electrode L/+/N/-, meanwhile, the partition exists Completely cut off electrode L/+/N/- and current bar along the sliding slot upward sliding of dropout part under the active force of spring, cuts off and security isolation is electric Road, the case surface also have form hole.

The dropout part is made of the staggered symmetrical channels shell body in two centers, and the two sides positioned at dropout part contain two Semicircular arc sliding slot, wherein there are also a fixed buckle structures on the outside of sliding slot.

The clamping piece is U-lag shape, is internally provided with trapezium structure slot gap, and the both ends of clamping piece have spiral shell Hole is connected and fixed with electrode L/+/N/-.

Another purpose of the utility model, it is more that the technical solution realized further discloses a kind of symmetric form AC/DC universal The circuit structure of lamellar spacing lightning protection device:

The circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device, it is characterised in that: by electrode L/+, electrode N/- With protection ground electrode PE and the small multilayer gap of several groups and its corresponding most lamellar spacing according to Y type circuit connection, in formation Between electrode, connect corresponding trip gear access between the electrode L/+, electrode N/- and the small multilayer gap of several groups, appoint One current path include electrode L/+ to electrode N/-, electrode L/+ to protection ground electrode PE, electrode N/- to protection ground electrode PE it Between, it is bridged by target, forms the circuit of several current-series；Connect with small multilayer gap, most lamellar spacing Electrode L/+ to electrode N/-, the electrode L/+ to protection ground electrode PE and electrode N/- for further including to be made of triggering capacitor is met extremely to protect The trigger circuit of ground electrode PE.

Technical solutions of the utility model have the following beneficial effects:

1. the technical program is switching mode lightning protection device, using multilayer clearance electrode and its design principle in gap, between utilization The features such as gap electrode low cost, easy processing, high temperature resistant, multilayer gap parameter is reasonably adjusted, different voltages grade may be implemented Without afterflow surging prevention；

2. it is designed as various sizes of multilayer gap, i.e. size multilayer gap in lightning protection device interiors of products, it is symmetrical using Y type Circuit design, L/+ and N/- and L/+ and N/- respectively over the ground between each electrode between be respectively formed two multilayer gaps Series connection, since the arc voltage after the conducting of each multilayer gap is reduced to more than ten volts, after the conducting of multiple parallel multi-layer gaps, lightning protection device The multiple of the whole a height of multilayer clearance criteria pressure voltage of arc voltage falling-rising, after being higher than standard operating voltage, lightning protection device will be without continuous Miscarriage life, to realize function of the AC and DC without afterflow；Meanwhile support circuits are reversely connected, i.e., positive and negative reversal connection, fire zero is reversely connected, and avoids Application and commissioning Process circuitry is reversed that lightning protection device is caused to damage；

3. technical solutions of the utility model are using the symmetrical circuit design of Y type and cooperate double trip gear symmetrical structures, when Lightning protection device overheat and when performance deterioration or damage, which can be such that lightning protection device is detached from from circuit, and by thermal release device Signal shows outputting alarm indication signal by surface of shell form, realizes quick thermal tripping disjunction, windows display status function；

4. technical solutions of the utility model output pin uses PCB welding form, existing industrial power height collection can be met The demand that Cheng Hua, miniaturization, batch wave-soldering produce；Integral product has small volume, and through-current capability is strong, circuit start is fast, High sensitivity, to realize extra small ultrathin design.

Attached drawing with reference to embodiments makees further decomposition to specific embodiment of the present utility model, so that this skill Art scheme is more readily understood, grasps.

Detailed description of the invention:

Fig. 1 is schematic diagram after the assembly of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device；

Fig. 2 is the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device assembling schematic diagram；

Fig. 3 is the structural representation in the small multilayer gap of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device Figure；

Fig. 4 is the structural representation of most lamellar spacing of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device Figure；

Fig. 5 is the dropout part structural schematic diagram of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device；

Fig. 6 is the clamping piece structural schematic diagram of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device；

Fig. 7 is the diaphragm structure schematic diagram of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device；

Fig. 8 is the circuit structure schematic illustration of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device；

Fig. 9 is the current triggering circuit of the circuit structure of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device One of schematic diagram；

Figure 10 is the current trigger electricity of the circuit structure of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device The two of road schematic diagram；

Figure 11 is the current trigger electricity of the circuit structure of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device The three of road schematic diagram；

Figure 12 is the trigger circuit of the circuit structure of the technical program symmetric form AC/DC universal multilayer clearance lightning-proof device Working principle diagram；

The meaning of each appended drawing reference in Fig. 1-Fig. 7 are as follows:

The small multilayer gap 1- shell, 2- pedestal, 3- electrode L/+/N/-, 4-, the most lamellar spacing 5-, 6- protection ground electrode PE, 7- screw, 8- trigger circuit plate, 9- clamping piece, 10- partition, 11- spring, 12- dropout part, 13- current bar, 14-, 31- card Button, 32- sliding slot, 41- small―gap suture electrode, the small insulating trip of 42-, 51- wide arc gap electrode, 51 '-targets, the big insulating trip of 52-, 91- trapezium structure slot；

The meaning of each appended drawing reference in Fig. 8-Figure 12 are as follows:

The small multilayer gap access in 201- electrode L/+, 202- electrode N/-, 101,101 '-, 102- protect ground electrode PE, 103- Most lamellar spacing access, 104- target, 105,105 '-trip gear accesses, 110,120,120 '-current loops, 301- Between first trigger circuit, the second trigger circuit of 302-, 303- third trigger circuit, 701,702,703,704,705,706- multilayer Gap electrode.

Specific embodiment

As shown in Figs 1-4, symmetric form AC/DC universal multilayer clearance lightning-proof device, by the small multilayer gap 4 and one of several groups The most lamellar spacing 5 of group stacks and forms the laminated construction of a Y shape and is installed on pedestal 2, the small multilayer gap 4, mostly Lamellar spacing 5 is made of small―gap suture electrode 41 and small insulating trip 42, wide arc gap electrode 51 and big insulating trip 52 respectively, is located at wide arc gap The wide arc gap electrode 51 of intersection constitutes target 51 ' between electrode 51 and small―gap suture electrode 41 or corresponding insulating trip；One It is to U-shaped insulation clamping piece 9 that the small multilayer gap 4 of several groups and one group of most lamellar spacing 5 is fixed, and be arranged inside clamping piece 9 There is trapezium structure slot 91, screw hole is arranged in 9 both ends of clamping piece, is located at most lamellar spacing 5, small 4 top of multilayer gap also There is a trigger circuit plate 8, the electrode L/+/N/-3 and protection ground electrode PE 6 pass through screw 7 and be fixed on 9 liang of clamping piece End；One trip gear is formed by partition 10, spring 11, dropout part 12, current bar 13, dropout part 12 of the two sides with sliding slot is logical The buckle 31 for crossing side wall is fixed on 9 one end of clamping piece；Several springs 11 are embedded into the sliding slot of 12 two sides of dropout part after compression In 32, corresponding current bar 13 is assembled in the dropout part 12, partition 10 is also configured between current bar 13 and dropout part 12, Described 13 one end of current bar is connected on electrode L/+/N/-3 using eutectic welding soldering, and the other end is described as electrode lead-out pins Trigger circuit plate 8 be fixed on the supporting element of pedestal 2, the electrode L/+/N/-3 and small 4 surface of multilayer gap, which are formed, welds Heat release point is connect, overload, which occurs, in any performance loop between the electrode L/+/N/-3, protection ground electrode PE 6 causes to overheat Afterwards, heat will be transmitted to welding heat release point, and after reaching welding heat release point melting point temperature, welding heat release point scolding tin melts To change, the current bar 13 is separated under own resilient effect with electrode L/+/N/-3, meanwhile, the partition 10 is in spring Active force under along 32 upward sliding of sliding slot of dropout part 12 completely cut off electrode L/+/N/-3 and current bar 13, cut off and security isolation Circuit, 1 surface of shell also have form hole, alert when red instruction occurs in form hole, illustrate the no longer valid need of product Replacement.

Further, the shell 1, pedestal 2, dropout part 12 are all made of the fire-retardant class F insulating material F of industry, due to such Material has various shapes, impact resistance, while guaranteeing and circuit board and adjacent electronics member device in the product use process again With the electric property of safe insulation between part.

The material of the wide arc gap electrode 51, small―gap suture electrode 41 is graphite or metal material or metal alloy compositions, The quantity of the wide arc gap electrode 51, small―gap suture electrode 41 and corresponding big insulating trip 52, small insulating trip 42 can be according to ginseng Several or space needs are adjusted.

The electrode L/+/N/-3 be circuit loop in alternating current circuit firewire and zero curve or DC circuit in just Pole and cathode.

As shown in figure 5, the dropout part 12 includes that the staggered symmetrical channels shell body in two centers is constituted, it is located at dropout part Two halves arc chute 32 is contained in 12 two sides, and several springs 11 are embedded into after compression in the sliding slot 32 of dropout part 12, Wherein, there are also fixed 31 structures of buckle in sliding slot 32 outside.

The channel-shaped as shown in fig. 6, clamping piece 9 is in U-shape, inside is distributed several 91 gaps of trapezium structure slot, and presss from both sides The both ends of gripping member 9 have fixing threaded hole, to fix electrode L/+/N/-3.

Connection between the trigger circuit plate 8 and most lamellar spacing 5, small multilayer gap 4 can use elastic metallic Either piece, metal row needle, metal elastic needle etc. formula connection, the trigger circuit plate 8 are fixed using screw 7 or rivet mode In on pedestal 2.

There is a supporting element on the pedestal 2, and be distributed several dovetail grooves on supporting element two sides, described is small Multilayer gap 4 is embedded in fixed in dovetail groove, supporting element top indwelling screw hole accordingly.

As shown in fig. 7, the partition 10 is the arcuate structural member that there are ear in two sides, spring is also installed at the rear positioned at ear 11 fixed link axis.

1 surface of shell has form, and red warning indication part is exposed when failure.

Description based on the above-mentioned technical proposal, as shown in figure 8, the utility model further relates to a kind of symmetric form AC/DC universal The circuit structure of multilayer clearance lightning-proof device, it is characterised in that:

By electrode L/+201, electrode N/-202 and protection ground electrode PE 102 and the small multilayer gap access 101 of several groups, 101 ', one groups of most lamellar spacing accesses 103 form target 104, the electrode L/+201, electricity according to Y type circuit connection Corresponding trip gear access 105,105 ' is set between pole N/-202 and the small multilayer gap access 101,101 ' of several groups, is appointed One current loop includes that electrode L/+201 to electrode N/-202, electrode L/+201 extremely protect ground electrode PE102, electrode N/-202 extremely It protects between ground electrode PE102, is bridged by target 104, form the circuit of several current-series；Small Multilayer gap access 101,101 ', between most lamellar spacing access 103 further include by triggering capacitor CL1-CLn, CPE1-CPEn, Electrode L/+201 to electrode N/-202, the electrode L/+201 of CN1-CNn composition to protection ground electrode PE102 and electrode N/-202 are extremely Protect the first trigger circuit 301, the second trigger circuit 302, third trigger circuit 303 of ground electrode PE102.

Further, the first working current loop curve 110 as shown in Figure 9, the electrode L/+201, electrode N/- 202 when there is overvoltage and being more than its conducting voltage, can be connected, be formed from current potential height between electrode L/+201 and electrode N/-202 Point flows to the current loop of current potential low spot, and electric current will flow through electrode L/+201, trip gear access 105,105 ', small multilayer gap Access 101,101 ', target 104 and electrode N/-202, lightning protection device can be overvoltage clamper in its nominal protection at this time Within horizontal extent, to play the role of to protected device electrode L/+201 to the overvoltage protection between electrode N/-202.

Second and third kind of working current loop curve 120,120 ' as shown in Figure 10, Figure 11, the electrode L/+201, electricity When pole N/-202 is to having overvoltage between protection ground electrode PE102, equally, electrode L/+201 and electrode N/-202 are to protecting field It is connected between electrode PE102, current loop flows to current potential low spot from current potential high point, and electric current will flow through electrode L/ separately or together + 201, electrode N/-202, trip gear access 105,105 ', small multilayer gap access 101,101 ', target 104, mostly Lamellar spacing access 103 and protection ground electrode PE102；Meanwhile lightning protection device overvoltage clamper in its nominal level of protection range Within, to play to protected device electrode L201 to protection ground electrode PE102 and electrode N/-202 to protection ground electrode PE Overvoltage protection effect.

The first working current loop curve 110 and second, the third working current loop curve 120,120 ' can Individually occur or occurs simultaneously.

Further, if the small multilayer gap access 101,101 ', between most lamellar spacing access 103 further include by The third trigger circuit 303 of the electrode L/+201 to electrode N/-202 of dry triggering capacitor composition, electrode L/+201 to protecting field The first trigger circuit 301 and electrode N/-202 of electrode PE102 extremely protects the second trigger circuit 302 of ground electrode PE102.

Specifically, the third trigger circuit 303 of the electrode L/+201 and electrode N/-202 is by triggering capacitor CL1- Capacitor CPE1 and triggering capacitor CN1-CNn composition, electrode L/+201 and protection ground electrode are triggered on CLn, target 104 The first trigger circuit 301 of PE102 is made of triggering capacitor CL1-CLn and triggering capacitor CPE1-CPEn, electrode N/-202 and guarantor The second trigger circuit 302 for protecting ground electrode PE102 is made of triggering capacitor CN1-CNn and triggering capacitor CPE1-CPEn.

It further says, L/+201 and N/-202 third trigger circuit 303, L/+201 and PE102 first on each circuit Trigger circuit 301 and 302 its trigger theory of the second trigger circuit of N/-202 and PE102 are as shown in figure 12, wherein in big multilayer There is insulating trip between gap access 103 and small multilayer gap access 101,101 ' laminations, the thickness of insulating trip determines gap Breakdown voltage, simultaneously as the partial pressure between the capacitor of each insulating trip and triggering capacitor, between general each insulating trip Capacitor is several to tens pF, and selecting triggering capacitor is ten times or more of insulation chip capacitor, makes to assign to no less than 90% on insulating trip Voltage, when electrode L/+201 and electrode N/-202, electrode L/+201 and protection ground electrode PE102 and electrode N/-202 and protection When there is overvoltage between ground electrode PE102, interelectrode capacity between multilayer clearance electrode 701 and multilayer clearance electrode 702 with It triggers voltage between capacitor C1 to increase, serial circuit capacitance voltage divider principle makes the small partial pressure of capacitor high, and the big partial pressure of capacitor is low, excessively electric Pressure will focus between multilayer clearance electrode 701 and multilayer clearance electrode 702, when reaching insulating trip breakdown voltage, between multilayer Gap electrode 701 and the breakdown of multilayer clearance electrode 702 are connected, main circuit voltage transfer at most lamellar spacing electrode 702, multilayer gap electricity Between pole 703 and triggering capacitor C2, likewise, multilayer clearance electrode 702 and multilayer clearance electrode 703 are connected, and so on, directly Until at most lamellar spacing electrode n-1 is connected with multilayer clearance electrode n, main circuit voltage is restricted to level of security by insulating trip, this Sample can satisfy each protection branch with more gaps, it is well known that and insulating trip is more, and afterflow snap ability is stronger, When the number of plies is enough, residual voltage, which is higher than system operating voltage, can reach no afterflow generation.

Meanwhile in order to guarantee reliably to cut off overcurrent-overvoltage and outputting alarm signal designation, the electrode L/+201, electricity Corresponding trip gear access 105,105 ' is set between pole N/-202 and the small multilayer gap access 101,101 ' of several groups, benefit Reached with trip gear access 105,105 ' in the thermal tripping eutectic welding contact that small multilayer gap access 101,101 ' surfaces are formed Scolding tin melts after melting point temperature, and trip gear access 105,105 ' is by electrode L/+201, electrode N/-202 and the small multilayer of several groups Gap access 101,101 ' realizes thermal tripping and overcurrent tripping separation, so that lightning protection device is cut off circuit in time, and carry out function instruction, User's replacement is reminded, or remote signalling warning signal is provided.

Finally, it should be noted that the above is only one of specific application examples of the utility model, in actual application Selection substitution component can be taken the circumstances into consideration as the case may be, but the protection scope of the technical program is not limited in any way.

Claims (14)

1. symmetric form AC/DC universal multilayer clearance lightning-proof device, including it is shell (1), pedestal (2), electrode L/+/N/- (3), small more Lamellar spacing (4), most lamellar spacing (5), protection ground electrode PE (6), screw (7), trigger circuit plate (8), clamping piece (9), partition (10), spring (11), dropout part (12), current bar (13), the small multilayer gap (4), most lamellar spacing (5) are respectively by small Clearance electrode (41) and small insulating trip (42), wide arc gap electrode (51) and big insulating trip (52) are constituted, it is characterised in that: with several The laminated construction that the small multilayer gap (4) of group and its corresponding most lamellar spacing (5) stack one Y shape of formation is mounted on the base, Wide arc gap electrode (51) structure of intersection between wide arc gap electrode (51) and small―gap suture electrode (41) or corresponding insulating trip At target (51 ')；

The small multilayer gap (4) and corresponding most lamellar spacing (5) two sides have clamping piece (9), and top has a touching Power Generation Road plate (8), the electrode L/+/N/- (3) and protection ground electrode PE (6) are fixed on clamping piece (9) two by screw (7) End；One trip gear is formed by partition (10), spring (11), dropout part (12), current bar (13), it is de- with sliding slot (32) Fastener (12) is fixed on clamping piece (9) one end by buckling (31)；Several springs (11) are embedded into dropout part after compression (12) in sliding slot, the corresponding current bar (13) of assembly in the dropout part (12), between current bar (13) and dropout part (12) It is also configured with partition (10), the current bar (13) one end is connected on electrode L/+/N/- (3) using eutectic welding soldering, another Hold extraction electrode pin；The trigger circuit plate (8) is fixed on the supporting element of pedestal (2) by screw, the electrode L/+/N/- (3) and small multilayer gap (4) surface form welding heat release point；

Any performance loop occurs after overload leads to overheat between the electrode L/+/N/- (3), protection ground electrode PE (6), heat Amount will be transmitted to welding heat release point, and after reaching welding heat release point melting point temperature, welding heat release point scolding tin melts, described Current bar (13) be separated under own resilient effect with electrode L/+/N/- (3), meanwhile, the partition (10) is in spring (11) sliding slot (32) upward sliding under active force along dropout part (12) completely cuts off electrode L/+/N/- (3) and current bar (13), cuts Disconnected and security isolation circuit, the shell (1) surface also has form hole.

2. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the wide arc gap Electrode (51), small―gap suture electrode (41) material be graphite or metal material or metal alloy compositions, the wide arc gap electrode (51), the quantity of small―gap suture electrode (41) and corresponding big insulating trip (52), small insulating trip (42) can be according to parameter or sky Between needs be adjusted.

3. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the electrode L/ The firewire and anode and cathode in zero curve or DC circuit that +/N/- (3) is the alternating current circuit in circuit loop.

4. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the dropout part It (12) include that the staggered symmetrical channels shell body in two centers is constituted, the arc-shaped cunning of two halves is contained in the two sides for being located at dropout part (12) Slot (32), several springs (11) are embedded into after compression in the sliding slot (32) of dropout part (12), wherein on the outside of sliding slot (32) also There is fixed buckle (31) structure.

5. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the clamping piece (9) be in U-shape channel-shaped, and inside is distributed several trapezium structure slot (91) gaps, and the both ends of clamping piece (9) have fixing threaded hole, To fix electrode L/+/N/- (3).

6. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the triggering electricity Connection between road plate (8) and most lamellar spacing (5), small multilayer gap (4) can arrange needle, gold using elastic sheet metal, metal Belong to and play the formula connection of either needle etc., the trigger circuit plate (8) is fixed on pedestal (2) using screw (7) or rivet mode On.

7. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the pedestal (2) there is a supporting element on, and be distributed several dovetail grooves on supporting element two sides, the small multilayer gap (4) is corresponding Insertion dovetail groove in fixed, supporting element top indwelling screw hole.

8. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the partition (10) it is the arcuate structural member that there is ear in two sides, the fixed link axis of spring (11) is also installed positioned at the rear of ear.

9. symmetric form AC/DC universal multilayer clearance lightning-proof device as described in claim 1, it is characterised in that: the shell (1) surface has form, and red warning indication part is exposed when failure.

10. the circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device, it is characterised in that: by electrode L/+ (201), electricity Pole N/- (202) and protection ground electrode PE (102) and the small multilayer gap access (101,101 ') of several groups, one group of most interlayer Gap access (103) is formed target (104), the electrode L/+ (201), electrode N/- (202) according to Y type circuit connection Corresponding trip gear access (105,105 '), any electric current are set between the small multilayer gap access (101,101 ') of several groups Circuit includes extremely protection ground electrode PE (102), electrode N/- electrode L/+ (201) to electrode N/- (202), electrode L/+ (201) (202) it between protection ground electrode PE (102), is bridged by target (104), forms several current-series Circuit；It further include by triggering capacitor CL1- between small multilayer gap access (101,101 '), most lamellar spacing access (103) CLn, CPE1-CPEn, CN1-CNn composition include that electrode L/+ (201) are extremely protected to electrode N/- (202), electrode L/+ (201) Ground electrode PE (102) and electrode N/- (202) is electric to the first trigger circuit (301) of protection ground electrode PE (102), the second triggering Road (302), third trigger circuit (303).

11. the circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device as claimed in claim 10, it is characterised in that: When there is overvoltage and is more than its conducting voltage in electrode L/+ (201), the electrode N/- (202), electrode L/+ (201) and electricity Pole N/- can be connected between (202), form the current loop that current potential low spot is flowed to from current potential high point, and electric current will flow through electrode L/+ (201), trip gear access (105,105 '), small multilayer gap access (101,101 '), target (104) and electrode N/- (202)；When electrode L/+ (201), the electrode N/- (202) is to having overvoltage between protection ground electrode PE (102), equally, Electrode L/+ (201) and electrode N/- (202) is connected between protection ground electrode PE (102), and current loop is flowed to from current potential high point Current potential low spot, electric current will flow through separately or together electrode L/+ (201), electrode N/- (202), trip gear access (105, 105 '), small multilayer gap access (101,101 '), target (104), most lamellar spacing access (103) and protection ground electrode PE(102)。

12. the circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device as claimed in claim 10, it is characterised in that: It further include triggering capacitor by several between the small multilayer gap access (101,101 '), most lamellar spacing access (103) The third trigger circuit (303) of the electrode L/+ (201) to electrode N/- (202) of composition, electrode L/+ (201) to protection ground electrode The first trigger circuit (301) and electrode N/- (202) of PE (102) extremely protects second trigger circuit of ground electrode PE (102) (302)。

13. the circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device as claimed in claim 12, it is characterised in that: The third trigger circuit (303) of the electrode L/+ (201) and electrode N/- (202) are by triggering capacitor CL1-CLn, target (104) capacitor CPE1 and triggering capacitor CN1-CNn composition are triggered on, the of electrode L/+ (201) and protection ground electrode PE (102) One trigger circuit (301) is made of triggering capacitor CL1-CLn and triggering capacitor CPE1-CPEn, electrode N/- (202) and protecting field The second trigger circuit (302) of electrode PE (102) is made of triggering capacitor CN1-CNn and triggering capacitor CPE1-CPEn.

14. the circuit structure of symmetric form AC/DC universal multilayer clearance lightning-proof device as claimed in claim 10, it is characterised in that: Setting is corresponding between electrode L/+ (201), the electrode N/- (202) and the small multilayer gap access (101,101 ') of several groups Trip gear access (105,105 '), using trip gear access (105,105 ') in small multilayer gap access (101,101 ') table The thermal tripping eutectic welding contact that face is formed reaches scolding tin after melting point temperature and melts, and trip gear access (105,105 ') is by electrode L/ + (201), electrode N/- (202) realize that thermal tripping and overcurrent tripping separate with the small multilayer gap access (101,101 ') of several groups, So that lightning protection device is cut off circuit in time, and carries out function instruction or remote signalling warning signal is provided.