CN108899762B - Symmetrical alternating current-direct current universal multi-layer gap lightning arrester and circuit structure thereof - Google Patents
Symmetrical alternating current-direct current universal multi-layer gap lightning arrester and circuit structure thereof Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/15—Details of spark gaps for protection against excessive pressure
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Abstract
The invention discloses a symmetrical alternating current-direct current universal multi-layer gap lightning arrester and a circuit structure thereof, wherein the multi-layer gap lap joint Y-shaped symmetrical structure with different sizes is adopted, and each formed current loop comprises a circuit formed by connecting a plurality of groups of small multi-layer gaps and large multi-layer gaps in series; and a trigger circuit consisting of capacitors is combined, and the functions of rapid thermal tripping breaking, window display state and reverse connection prevention are realized by matching with the symmetrical structure of the double tripping devices; the problems of ultra-thin, ultra-small, large-current, high-voltage application, universal AC/DC, no follow current, reverse circuit connection and function indication on the PCB board are effectively solved, and the lightning protection device is more suitable for the requirements of modern communication.
Description
Technical Field
The invention relates to a multi-layer gap lightning arrester, in particular to a symmetrical alternating current-direct current universal multi-layer gap lightning arrester and a circuit structure thereof, belonging to the field of lightning arresters.
Background
With the rapid development of the communication industry, the rapid development of terminals and mobile internet services in the upcoming 5G age is providing a higher challenge for the evolution of mobile networks, in order to achieve the high-speed communication, the intelligentization will require more dense mobile base stations, and the equipment required by the installation positions of the mobile base stations has the characteristics of ultra-thin, ultra-small, easy installation, easy production and high performance, so that more and more miniaturized base station products with deep coverage, easy deployment and low energy consumption are continuously emerging, and the miniaturized on-board lightning protection device (hereinafter referred to as SPD) is one of them.
As is well known, most of early mobile base stations adopt guide rail-mounted pluggable SPDs, and the SPDs are based on piezoresistors, gaps and gas discharge tube principles, and have the characteristics of large through-flow capacity, function state indication, convenient replacement and the like, but are limited by structures and components, and have larger sizes; with the further development of the communication industry, the plug SPD installed on the guide rail is gradually replaced by the PCB installed SPD with smaller volume, the PCB welding installation product still adopts the design of piezoresistors and gas discharge tubes, the guide rail and the plug base are removed, and the fact proves that the PCB installed SPD can realize the miniaturization requirement; along with the application of high-voltage direct current in the communication industry, the size of the piezoresistor is increased and thickened, and the size of the gas discharge tube is increased along with the improvement of the through flow because the parameters and the size of the piezoresistor and the gas discharge tube are limited in the prior PCB installation, so that the miniaturization is difficult to realize by adopting the traditional piezoresistor and the gas discharge tube.
The current SPD for the PCB is a product designed based on a piezoresistor and a gas discharge tube, the area of the piezoresistor is in direct proportion to the through current, the thickness of the piezoresistor is in direct proportion to the voltage, and when the voltage is higher and the through current is larger, thicker and larger piezoresistors are needed to realize parameter requirements; the gas discharge tube is usually a single discharge gap, the biggest disadvantage is arc extinction and continuous flow, for an alternating current system, alternating current zero crossing can be adopted for arc extinction, and for a direct current system, direct current follow current cannot be cut off because the arc voltage of the single gap after conduction is very low (generally only tens of volts), so that the gas discharge tube is continuously conducted with low resistance, and is overheated and damaged; the series circuit of the piezoresistor and the gas discharge tube is adopted, so that the follow current can be cut off under certain conditions, but the voltage and the current capacity are limited by the thickness and the area of the piezoresistor, and the small size cannot be achieved.
Based on the above facts, considering the complex situation of field wiring, it is more and more important to have an SPD with two lightning protection components in series symmetrical design and general use of ac/dc system between each electrode, so that the SPD is required to meet the technical indexes of larger through current, higher working voltage, symmetry of wiring (i.e. power supply L/+/N/-wiring exchange), function indication and general use of ac/dc system in a small size environment in the communication industry.
Disclosure of Invention
In order to solve the technical problems, the technical scheme aims at overcoming the defects of the prior art and developing a symmetrical alternating current-direct current general multi-layer gap lightning protection device, wherein multi-layer gaps with different sizes are adopted to lap a Y-shaped symmetrical circuit, and each formed current loop comprises a plurality of groups of circuits which are connected in series between a small multi-layer gap and a large multi-layer gap; and a trigger circuit consisting of capacitors is combined, and the functions of rapid thermal tripping breaking, window display state and reverse connection prevention are realized by matching with the symmetrical structure of the double tripping devices; the problems of ultra-thin, ultra-small, large-current, high-voltage application, universal AC/DC, no follow current, reverse circuit connection and function indication on the PCB board are effectively solved, and the lightning protection device is more suitable for the requirements of modern communication.
The aim of the technical scheme is realized through the following technical scheme:
The utility model provides a general multilayer clearance lightning protection device of symmetry formula alternating current-direct current, includes shell body, base, electrode L/+/N/-, little multilayer clearance, big multilayer clearance, protection ground electrode PE, screw, trigger circuit board, holder, baffle, spring, tripping part, current strip, little multilayer clearance, big multilayer clearance constitute its characterized in that by little clearance electrode and little insulating piece, big clearance electrode and big insulating piece respectively: a plurality of groups of small multi-layer gaps and corresponding large multi-layer gaps are stacked to form a Y-shaped stacked structure, and the Y-shaped stacked structure is arranged on the base, and the large gap electrode positioned at the junction between the large gap electrode and the small gap electrode or the corresponding insulating sheet forms an intermediate electrode; the two sides of the small multilayer gap and the corresponding large multilayer gap are provided with clamping pieces, the upper part of the small multilayer gap is provided with a trigger circuit board, and the electrode L/+/N/-and the protective ground electrode PE are fixed at the two ends of the clamping pieces through screws; the trip device is composed of a baffle plate, a spring, a trip piece and a current strip, and the trip piece with a chute is fixed at one end of a clamping piece through a buckle; the springs are compressed and embedded into a trip piece sliding groove, corresponding current strips are assembled in the trip piece, a partition plate is arranged between the current strips and the trip piece, one end of each current strip is welded on an electrode L/+/N/-by adopting low-temperature soldering tin, and the other end of each current strip is led out of an electrode pin; the trigger circuit board is fixed on a supporting piece of the base through a screw, the electrode L/+/N/-and the small multi-layer clearance surface form a welding heat tripping point, after overload occurs in any working loop between the electrode L/+/N/-, the protective ground electrode PE and the working loop is overheated, heat is conducted to the welding heat tripping point, after the temperature of the melting point of the welding heat tripping point is reached, the welding heat tripping spot welding tin melts, the current strip is separated from the electrode L/+/N/-under the action of self elasticity, meanwhile, the baffle upwards slides along a chute of the trip piece under the action of the spring to isolate the electrode L/+/N/-and the current strip, and the safety isolation circuit is cut off, and the surface of the shell is also provided with a window.
The trip piece constitute by two central crisscross symmetrical groove type casings, be located the both sides face of trip piece and contain two semicircle arc spouts, wherein, the spout outside still has a fixed buckle structure.
The clamping piece is U-shaped, a trapezoid structure groove gap is formed in the clamping piece, screw holes are formed in two ends of the clamping piece, and the clamping piece is fixedly connected with the electrode L/+/N/.
The invention further discloses a circuit structure of the symmetrical alternating current-direct current general multi-layer gap lightning arrester, which is characterized in that:
The circuit structure of the general multilayer clearance lightning arrester of symmetrical alternating current-direct current, its characteristic is: the electrode L/+, the electrode N/-and the protective ground electrode PE as well as a plurality of groups of small multi-layer gaps and corresponding large multi-layer gaps are connected according to a Y-shaped circuit to form an intermediate electrode, the electrode L/+, the electrode N/-and the small multi-layer gaps are connected with corresponding tripping device paths, any current path comprises the electrode L/+ to the electrode N/-, the electrode L/+ to the protective ground electrode PE and the electrode N/-to the protective ground electrode PE, and bridging is carried out through the intermediate electrode to form a plurality of loops connected in series by current; the trigger circuit is connected with the small multilayer gap and the large multilayer gap and comprises an electrode L/+ to an electrode N/-, an electrode L/+ to a protective ground electrode PE and an electrode N/-to the protective ground electrode PE, wherein the electrode L/+ is composed of a trigger capacitor.
The technical scheme of the invention has the following beneficial effects:
1. The technical scheme is that the switch type lightning arrester adopts the design principle of a plurality of layers of gap electrodes and gaps thereof, and the characteristics of low cost, easy processing, high temperature resistance and the like of the gap electrodes are utilized, so that the parameters of the plurality of layers of gaps are reasonably adjusted, and no-follow-current surge protection of different voltage classes can be realized;
2. The lightning protection device is designed into multi-layer gaps with different sizes, namely multi-layer gaps with different sizes, a Y-type symmetrical circuit design is adopted, and two multi-layer gaps are connected in series between each electrode between L/+ and N/-and between each electrode and each electrode between L/+ and N/-respectively for the ground, and as the arc voltage of each multi-layer gap after being conducted is reduced to tens of volts, the integral arc voltage drop of the lightning protection device is increased to be a multiple of the standard withstand voltage value of the multi-layer gap after a plurality of serial multi-layer gaps are conducted, and no afterflow is generated after the voltage is higher than the standard working voltage, so that the alternating current and direct current afterflow-free functions are realized; meanwhile, the support circuit is reversely connected, namely positive and negative reversely connected and fire zero reversely connected, so that the damage of the lightning protection device caused by reverse connection of the circuit in the application and adjustment and measurement processes is avoided;
3. According to the technical scheme, a Y-shaped symmetrical circuit design is adopted and matched with a symmetrical structure of the double tripping devices, when the lightning protection device is overheated and the performance is deteriorated or damaged, the tripping devices can separate the lightning protection device from the circuit, and signals of the thermal tripping devices are displayed and output alarm indication signals through a window on the surface of the shell, so that the functions of rapid thermal tripping breaking and window display state are realized;
4. The output pins of the technical scheme adopt a PCB welding mode, so that the requirements of high integration, miniaturization and batch wave soldering production of the existing industrial power supply can be met; the whole product has the advantages of small volume, strong through-current capability, quick circuit starting and high sensitivity, thereby realizing ultra-small and ultra-thin design.
The following description of the embodiments of the present invention is further broken down with reference to the accompanying drawings of examples, so that the technical solution is easier to understand and master.
Drawings
FIG. 1 is a schematic diagram of a symmetrical AC/DC general multi-layer gap lightning arrester in the technical scheme after assembly;
FIG. 2 is an assembly schematic diagram of the symmetrical AC/DC general multi-layer gap lightning arrester in the technical scheme;
FIG. 3 is a schematic view of a small multi-layer gap structure of a symmetrical AC/DC universal multi-layer gap lightning arrester according to the present technical scheme
FIG. 4 is a schematic diagram of a large multi-layer gap of the symmetrical AC/DC universal multi-layer gap lightning arrester
FIG. 5 is a schematic diagram of the trip unit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the technical scheme;
FIG. 6 is a schematic diagram of a structure of a clamping member of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the technical scheme;
FIG. 7 is a schematic diagram of a partition structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the technical scheme;
FIG. 8 is a schematic diagram of the circuit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the technical scheme;
FIG. 9 is a schematic diagram of a current trigger circuit of a circuit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the present disclosure;
FIG. 10 is a second schematic diagram of a current trigger circuit of the circuit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the present embodiment;
FIG. 11 is a third schematic diagram of a current trigger circuit of the circuit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester according to the present embodiment;
FIG. 12 is a schematic diagram of the operation of a trigger circuit of the circuit structure of the symmetrical AC/DC universal multi-layer gap lightning arrester of the present technical scheme;
The meaning of the reference numerals in fig. 1-7 is:
1-shell, 2-base, 3-electrode L/+/N/-, 4-small multi-layer gap, 5-large multi-layer gap, 6-protective ground electrode PE, 7-screw, 8-trigger circuit board, 9-clamp, 10-separator, 11-spring, 12-trip, 13-current bar, 14-, 31-buckle, 32-chute, 41-small gap electrode, 42-small insulating sheet, 51-large gap electrode, 51' -middle electrode, 52-large insulating sheet, 91-trapezoid structural groove;
The meaning of the reference numerals in fig. 8 to 12 is:
201-electrode L/+, (101, 101 ') -small multi-layer gap path, 102-guard electrode PE, 103-large multi-layer gap path, 104-intermediate electrode, (105, 105 ') -trip device path, (110, 120 ') -current loop, 301-first trigger circuit, 302-second trigger circuit, 303-third trigger circuit, (CL 1-CLn, CPE1-CPEn, CN1-CNn, C1-CN/-1) -trigger capacitance, (701, 702, 703, 704, 705, 706) -multi-layer gap electrode.
Detailed Description
As shown in fig. 1-4, the symmetrical ac/dc universal multi-layer gap lightning arrester is formed by stacking a plurality of small multi-layer gaps 4 and a plurality of large multi-layer gaps 5 to form a Y-shaped stacked structure and is mounted on a base 2, wherein the small multi-layer gaps 4 and the large multi-layer gaps 5 are respectively formed by a small gap electrode 41, a small insulating sheet 42, a large gap electrode 51 and a large insulating sheet 52, and the large gap electrode 51 positioned at the junction between the large gap electrode 51 and the small gap electrode 41 or the corresponding insulating sheet forms an intermediate electrode 51'; a pair of U-shaped insulating clamping pieces 9 fix a plurality of groups of small multilayer gaps 4 and a group of large multilayer gaps 5, trapezoidal structure grooves 91 are formed in the clamping pieces 9, screw holes are formed at two ends of the clamping pieces 9, a trigger circuit board 8 is arranged at the upper parts of the large multilayer gaps 5 and the small multilayer gaps 4, and the electrode L/+/N/-3 and the protective ground electrode PE 6 are fixed at two ends of the clamping pieces 9 through screws 7; the separator 10, the spring 11, the trip piece 12 and the current bar 13 form a trip device, and the trip piece 12 with sliding grooves on two sides is fixed at one end of the clamping piece 9 through a buckle 31 on the side wall; the springs 11 are compressed and embedded into the sliding grooves 32 on two sides of the tripping element 12, the tripping element 12 is provided with corresponding current bars 13, a partition board 10 is arranged between the current bars 13 and the tripping element 12, one end of each current bar 13 is welded on the electrode L/+/N/-3 by adopting low-temperature soldering tin, the other end of each current bar is used as an electrode leading-out pin, the trigger circuit board 8 is fixed on a supporting element of the base 2, the electrode L/+/N/-3 and the surface of the small multi-layer gap 4 form a welding heat tripping point, after overload occurs in any working loop between the electrode L/+/N/-3 and the protective ground electrode PE 6, heat is conducted to the welding heat tripping point, after the temperature of the melting point of the welding heat tripping point is reached, the welding heat tripping tin melts, the current bars 13 are separated from the electrode L/+/N/-3 under the action of self elasticity, meanwhile, the partition board 10 slides the electrode L/+/N/-3 and the current bars 13 upwards along the sliding grooves 32 of the tripping element 12 under the action of the spring, cuts off and the surface of the small multi-layer gap 4, and the safety window has a warning window for indicating that the safety window hole is required to be replaced.
Further, the housing 1, the base 2 and the release fastener 12 are all made of industrial flame-retardant insulating materials, and the materials have various shapes and impact resistance, and meanwhile, the safety insulation electrical performance between the product and the circuit board and between the product and adjacent electronic components is ensured in the use process.
The large gap electrode (51) and the small gap electrode (41) are made of graphite or metal materials or metal alloy materials, and the number of the large gap electrode (51), the small gap electrode (41) and the corresponding large insulating sheets (52) and the corresponding small insulating sheets (42) can be adjusted according to parameters or space requirements.
The electrode L/+/N/-3 is the live wire and the zero wire of an alternating current circuit in a circuit loop or the positive electrode and the negative electrode in a direct current circuit.
As shown in fig. 5, the trip member 12 comprises two symmetrical slot-shaped housings with staggered centers, two semicircular arc-shaped sliding slots 32 are arranged on two side surfaces of the trip member 12, and a plurality of springs 11 are compressed and then embedded into the sliding slots 32 of the trip member 12, wherein a fixed buckle 31 structure is arranged on the outer side of the sliding slots 32.
As shown in fig. 6, the clamping member 9 is in a U-shaped groove shape, a plurality of gaps of trapezoid structure grooves 91 are distributed on the inner side, and fixing screw holes are formed at two ends of the clamping member 9 so as to fix the electrode L/+/N/-3.
The trigger circuit board 8 can be connected with the large multilayer gap 5 and the small multilayer gap 4 by adopting any mode of elastic metal sheets, metal pin bars, metal spring pins and the like, and the trigger circuit board 8 is fixed on the base 2 by using a screw 7 or a rivet mode.
The base 2 is provided with a supporting piece, a plurality of trapezoid grooves are distributed on two side faces of the supporting piece, the small multilayer gaps 4 are correspondingly embedded into the trapezoid grooves to be fixed, and screw holes are reserved on the upper parts of the supporting piece.
As shown in fig. 7, the partition board 10 is an arcuate structure with lugs on both sides, and a fixing rod shaft for mounting a spring 11 is provided behind the lugs.
The surface of the shell 1 is provided with a window, and a red warning indication part is exposed when the shell fails.
Based on the description of the above technical solution, as shown in fig. 8, the present invention further relates to a circuit structure of a symmetrical ac/dc universal multi-layer gap lightning protection device, which is characterized in that:
The electrode L/+201, the electrode N/-202, the protective ground electrode PE102, a plurality of groups of small multi-layer clearance passages (101, 101 '), a group of large multi-layer clearance passages 103 are connected according to a Y-shaped circuit to form an intermediate electrode 104, corresponding tripping device passages (105, 105 ') are arranged between the electrode L/+201, the electrode N/-202 and the groups of small multi-layer clearance passages (101, 101 '), any current loop comprises the electrode L/+201 to the electrode N/-202, the electrode L/+201 to the protective ground electrode PE102, and the electrode N/-201 to the protective ground electrode PE102, and all the electrode L/-201 to the protective ground electrode PE102 are bridged through the intermediate electrode 104 to form a plurality of current series loops; also included between the small multi-layer gap path (101, 101'), the large multi-layer gap path 103 are a first trigger circuit 301, a second trigger circuit 302, a third trigger circuit 303 consisting of trigger capacitances (CL 1-CLn, CPE1-CPEn, CN 1-CNn) L/+201 to electrode N/-202, electrode L/+201 to the guard electrode PE102, and electrode N/-202 to the guard electrode PE 102.
Further, as shown in the first working current loop curve 110 of fig. 9, when the electrode L/+201 and the electrode N/-202 are over-voltage and exceed their on-voltage, the electrode L/+201 and the electrode N/-202 are conducted to form a current loop from a high potential point to a low potential point, and the current flows through the electrode L/+201, the trip device path 105, the small multi-layer gap path 101, the intermediate electrode 104, the small multi-layer gap path 101', the trip device path 105' and the electrode N/-202, and at this time, the lightning protection device clamps the over-voltage within the nominal protection level range thereof, so as to play a role of protecting the overvoltage between the electrode L/+201 and the electrode N/-202 of the protected equipment.
As shown in the second and third working current loop curves 120 and 120' of fig. 10 and 11, when an overvoltage exists between the electrode L/+201 and the electrode N/-202 pair of the protective ground electrodes PE102, the electrode L/+201 and the electrode N/-202 pair of the protective ground electrodes PE102 are conducted, and the current loop flows from the high potential point to the low potential point, and the current flows through the electrode L/+201, the trip device path 105, the small multi-layer gap path 101, the middle electrode 104, the large multi-layer gap path 103 and the protective ground electrodes PE102 respectively or simultaneously; or from electrode N/-202, trip device path 105', small multi-layer gap path 101', intermediate electrode 104, large multi-layer gap path 103, and guard electrode PE102; meanwhile, the lightning protection device clamps overvoltage within the range of the nominal protection level, so that overvoltage protection effects on the protected equipment electrode L201 to the protection ground electrode PE102 and the electrode N/-202 to the protection ground electrode PE are achieved.
The first operating current loop curve 110 and the second and third operating current loop curves 120, 120' may occur separately or simultaneously.
Further, the small multi-layer gap paths (101, 101'), the large multi-layer gap path 103, and the third trigger circuit 303 from the electrode L/+201 to the electrode N/-202, which are formed by a plurality of trigger capacitors, the first trigger circuit 301 from the electrode L/+201 to the protective ground electrode PE102, and the second trigger circuit 302 from the electrode N/-202 to the protective ground electrode PE102 are further included.
Specifically, the third trigger circuit 303 of the electrode L/+201 and the electrode N/-202 is composed of trigger capacitors (CL 1-CLn), the trigger capacitors CPE1 and the trigger capacitors (CN 1-CNn) on the middle electrode 104, the first trigger circuit 301 of the electrode L/+201 and the protective ground electrode PE102 is composed of the trigger capacitors (CL 1-CLn) and the trigger capacitors (CPE 1-CPEn), and the second trigger circuit 302 of the electrode N/-202 and the protective ground electrode PE102 is composed of the trigger capacitors (CN 1-CNn) and the trigger capacitors (CPE 1-CPEn).
Further, the triggering principle of the L/+201 and N/-202 triggering circuits 303, L/+201 and PE102 first triggering circuits 301 and N/-202 and PE102 second triggering circuits 302 on each loop is shown in FIG. 12, wherein insulating sheets are arranged between the large multi-layer gap path 103 and the small multi-layer gap path (101, 101') lamination, the thickness of the insulating sheets determines the breakdown voltage of the gap, meanwhile, due to the voltage division between the capacitance of each insulating sheet and the triggering capacitance, the capacitance between each insulating sheet is generally several to several tens pF, the triggering capacitance is more than ten times of the capacitance of the insulating sheets, so that the insulating sheets are divided into voltages of not less than 90%, when overvoltage occurs between the electrode L/+201 and the electrode N/-202, the electrode L/+201 and the protective electrode PE102, and between the electrode N/-202 and the protective electrode PE102, the voltage between the interelectrode capacitance between the multi-layer gap electrode 701 and the multi-layer gap electrode 702 and the trigger capacitance C1 increases, the principle of series circuit capacitance voltage division leads to small voltage division and high capacitance large voltage division, overvoltage is concentrated between the multi-layer gap electrode 701 and the multi-layer gap electrode 702, when the breakdown voltage of the insulating sheet is reached, the multi-layer gap electrode 701 breaks down and conducts with the multi-layer gap electrode 702, the main circuit voltage is transferred to the multi-layer gap electrode 702, the multi-layer gap electrode 703 and the trigger capacitance C2, and the like, the multi-layer gap electrode 702 conducts with the multi-layer gap electrode 703 until the multi-layer gap electrode N/-1 conducts with the multi-layer gap electrode N, the main circuit voltage is limited to a safe level by the insulating sheet, so that each protection branch can be satisfied to have more gaps, it is known that the more insulating sheets, the stronger the freewheel breaking capability, and when the number of layers is enough, the residual voltage is higher than the working voltage of the system, so that no freewheel is generated.
Meanwhile, in order to ensure reliable cutoff of over-voltage and output of alarm signal indication, corresponding tripping device passages (105, 105 ') are arranged between the electrode L/+201 and the electrode N/-202 and a plurality of groups of small multi-layer clearance passages (101, 101'), and after a thermal tripping low-temperature welding point formed on the surfaces of the small multi-layer clearance passages (101, 101 ') by the tripping device passages (105, 105') reaches a melting point temperature, soldering tin melts, the tripping device passages (105, 105 ') realize thermal tripping and over-current tripping separation of the electrode L/+201 and the electrode N/-202 and the groups of small multi-layer clearance passages (101, 101'), so that the lightning arrester cuts off a circuit in time, performs function indication, reminds a user to replace or provides a remote signaling alarm signal.
Finally, it should be noted that the above is only one of the specific application examples of the present invention, and the replacement components can be selected according to the specific situation in the practical application process, but the protection scope of the present invention is not limited in any way.
Claims (14)
1. The utility model provides a general multilayer clearance lightning protection device of symmetry formula alternating current-direct current, includes shell (1), base (2), electrode L/+/N/- (3), little multilayer clearance (4), big multilayer clearance (5), protection ground electrode PE (6), screw (7), trigger circuit board (8), clamping piece (9), baffle (10), spring (11), release (12), electric current strip (13), little multilayer clearance (4), big multilayer clearance (5) constitute its characterized in that by little clearance electrode (41) and little insulating piece (42), big clearance electrode (51) and big insulating piece (52) respectively: a plurality of groups of small multi-layer gaps (4) and corresponding large multi-layer gaps (5) are stacked to form a Y-shaped stacked structure, the Y-shaped stacked structure is arranged on a base, and a large gap electrode (51) positioned at the junction between the large gap electrode (51) and the small gap electrode (41) or a corresponding insulating sheet forms an intermediate electrode (51');
The two sides of the small multilayer gap (4) and the corresponding large multilayer gap (5) are provided with clamping pieces (9), the upper part of the small multilayer gap is provided with a trigger circuit board (8), and the electrode L/+/N/- (3) and the protective ground electrode PE (6) are fixed at the two ends of the clamping pieces (9) through screws (7); the trip device is composed of a baffle plate (10), a spring (11), a trip piece (12) and a current bar (13), wherein the trip piece (12) with a chute (32) is fixed at one end of a clamping piece (9) through a buckle (31); the springs (11) are compressed and embedded into a chute of the tripping piece (12), corresponding current strips (13) are assembled in the tripping piece (12), a partition board (10) is further arranged between the current strips (13) and the tripping piece (12), one end of each current strip (13) is welded on the electrode L/+/N/- (3) by adopting low-temperature soldering tin, and the other end of each current strip is led out of an electrode pin; the trigger circuit board (8) is fixed on a support piece of the base (2) through a screw, and the electrode L/+/N/- (3) and the surface of the small multilayer gap (4) form a welding thermal tripping point;
After overload occurs in any working loop between the electrode L/+/N/- (3) and the protective ground electrode PE (6) to cause overheat, heat is conducted to a welding heat tripping point, after the temperature of the welding heat tripping point is reached, welding heat tripping tin melts, the current strip (13) is separated from the electrode L/+/N/- (3) under the action of self elasticity, meanwhile, the partition board (10) slides upwards along a sliding groove (32) of the tripping piece (12) under the action of the spring (11) to isolate the electrode L/+/N/- (3) and the current strip (13), and the circuit is cut off and safely isolated, and the surface of the shell (1) is also provided with a window hole.
2. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the large gap electrode (51) and the small gap electrode (41) are made of graphite or metal materials or metal alloy materials, and the number of the large gap electrode (51), the small gap electrode (41) and the corresponding large insulating sheets (52) and the corresponding small insulating sheets (42) is adjusted according to parameters or space requirements.
3. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the electrode L/+/N/- (3) is the live wire and the zero wire of an alternating current circuit in the circuit loop or the positive electrode and the negative electrode in a direct current circuit.
4. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the tripping part (12) comprises two symmetrical groove-shaped shells with staggered centers, two semicircular arc-shaped sliding grooves (32) are formed in two side surfaces of the tripping part (12), a plurality of springs (11) are compressed and then embedded into the sliding grooves (32) of the tripping part (12), and a fixed buckle (31) structure is arranged on the outer side of the sliding grooves (32).
5. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the clamping piece (9) is U-shaped, a plurality of trapezoidal structure grooves (91) are distributed on the inner side of the clamping piece, and fixing screw holes are formed in the two ends of the clamping piece (9) so as to fix the electrode L/+/N/- (3).
6. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the trigger circuit board (8) is connected with the large multi-layer gap (5) and the small multi-layer gap (4) in any mode of elastic metal sheets, metal pin bars and metal spring pins, and the trigger circuit board (8) is fixed on the base (2) by using screws (7) or rivets.
7. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the base (2) is provided with a supporting piece, a plurality of trapezoid grooves are distributed on two side faces of the supporting piece, the small multilayer gaps (4) are correspondingly embedded into the trapezoid grooves to be fixed, and screw holes are reserved on the upper parts of the supporting pieces.
8. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the partition board (10) is an arched structural member with lugs at two sides, and a fixed rod shaft for installing a spring (11) is arranged behind the lugs.
9. The symmetrical ac/dc universal multi-layer gap lightning protection device of claim 1, wherein: the surface of the shell (1) is provided with a window, and a red warning indication part is exposed when the shell fails.
10. The circuit structure of the general multilayer clearance lightning arrester of symmetrical alternating current-direct current, its characteristic is: the electrode L/+ (201), the electrode N/- (202) and the protective ground electrode PE (102) are connected with a plurality of groups of small multi-layer clearance passages (101, 101 '), and a group of large multi-layer clearance passages (103) are connected according to a Y-type circuit to form an intermediate electrode (104), corresponding tripping device passages (105, 105 ') are arranged between the electrode L/+ (201), the electrode N/- (202) and the groups of small multi-layer clearance passages (101, 101 '), and any current loop comprises the electrode L/+ (201) to the electrode N/- (202), the electrode L/+ (201) to the protective ground electrode PE (102) and the electrode N/- (201) to the protective ground electrode PE (102), and a plurality of current series loops are formed through the intermediate electrode (104); also included between the small multi-layer gap path (101, 101'), the large multi-layer gap path (103) are a first trigger circuit (301), a second trigger circuit (302), and a third trigger circuit (303) consisting of trigger capacitors (CL 1-CLn, CPE1-CPEn, CN 1-CNn) and comprising electrodes L/+ (201) through N/- (202), L/+ (201) through the guard electrode PE (102), and N/- (202) through the guard electrode PE (102).
11. The circuit structure of the symmetrical ac/dc universal multi-layer gap lightning protection device of claim 10, wherein: when the electrode L/+ (201) and the electrode N/- (202) are subjected to overvoltage and exceed the conducting voltage, the electrode L/+ (201) and the electrode N/- (202) are conducted to form a current loop from a potential high point to a potential low point, and current flows through the electrode L/+ (201), the tripping device paths (105, 105 '), the middle electrode (104), the small multi-layer gap paths (101, 101 '), the tripping device paths (105, 105 ') and the electrode N/- (202); when overvoltage exists between the electrode L/+ (201) and the electrode N/- (202) and the protective ground electrode PE (102), the electrode L/+ (201) and the electrode N/- (202) are conducted between the protective ground electrode PE (102), a current loop flows from a potential high point to a potential low point, and current flows through the electrode L/+ (201), the tripping device paths (105, 105 '), the small multi-layer clearance paths (101, 101'), the middle electrode (104), the large multi-layer clearance path (103) and the protective ground electrode PE (102) respectively or simultaneously; or from electrode N/- (202), trip device path (105, 105 '), small multi-layer gap path (101, 101'), intermediate electrode (104), large multi-layer gap path (103) and protective ground electrode PE (102).
12. The circuit structure of the symmetrical ac/dc universal multi-layer gap lightning protection device of claim 10, wherein: the small multi-layer clearance passages (101, 101') and the large multi-layer clearance passage (103) also comprise a third trigger circuit (303) from the electrode L/+ (201) to the electrode N/- (202) which are formed by a plurality of trigger capacitors, a first trigger circuit (301) from the electrode L/+ (201) to the protective ground electrode PE (102) and a second trigger circuit (302) from the electrode N/- (202) to the protective ground electrode PE (102).
13. The circuit structure of the symmetrical ac/dc universal multi-layer gap lightning protection device of claim 12, wherein: the third trigger circuit (303) of the electrode L/+ (201) and the electrode N/- (202) consists of trigger capacitors (CL 1-CLn), trigger capacitors (CPE 1) and trigger capacitors (CN 1-CNn) on the middle electrode (104), the first trigger circuit (301) of the electrode L/+ (201) and the protective ground electrode PE (102) consists of trigger capacitors (CL 1-CLn) and trigger capacitors (CPE 1-CPEn), and the second trigger circuit (302) of the electrode N/- (202) and the protective ground electrode PE (102) consists of trigger capacitors (CN 1-CNn) and trigger capacitors (CPE 1-CPEn).
14. The circuit structure of the symmetrical ac/dc universal multi-layer gap lightning protection device of claim 10, wherein: corresponding tripping device passages (105, 105 ') are arranged between the electrode L/+ (201), the electrode N/- (202) and the small multi-layer clearance passages (101, 101'), soldering tin melts after a thermal tripping low-temperature soldering point formed on the surfaces of the small multi-layer clearance passages (101, 101 ') by the tripping device passages (105, 105') reaches a melting point temperature, and the tripping device passages (105, 105 ') realize thermal tripping and overcurrent tripping separation between the electrode L/+ (201), the electrode N/- (202) and the small multi-layer clearance passages (101, 101') so that the lightning arrester cuts off a circuit in time and performs function indication or provides remote signaling alarm signals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684561.6A CN108899762B (en) | 2018-06-28 | 2018-06-28 | Symmetrical alternating current-direct current universal multi-layer gap lightning arrester and circuit structure thereof |
| DE102019209243.8A DE102019209243A1 (en) | 2018-06-28 | 2019-06-26 | UNIVERSAL LIGHTNING PROTECTION DEVICE FOR AC AND DIRECT CURRENT IN SYMMETRICAL VERSION WITH MULTIPLE SPARK RANGES AND THEIR CIRCUIT STRUCTURE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684561.6A CN108899762B (en) | 2018-06-28 | 2018-06-28 | Symmetrical alternating current-direct current universal multi-layer gap lightning arrester and circuit structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108899762A CN108899762A (en) | 2018-11-27 |
| CN108899762B true CN108899762B (en) | 2024-04-23 |
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| CN201810684561.6A Active CN108899762B (en) | 2018-06-28 | 2018-06-28 | Symmetrical alternating current-direct current universal multi-layer gap lightning arrester and circuit structure thereof |
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| Country | Link |
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| CN (1) | CN108899762B (en) |
| DE (1) | DE102019209243A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215817512U (en) * | 2021-01-29 | 2022-02-11 | 华为数字能源技术有限公司 | Lightning protection device and distribution equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1560187A (en) * | 1978-02-22 | 1980-01-30 | Anvar | Miniature lightning protector |
| CN201898329U (en) * | 2010-12-11 | 2011-07-13 | 株洲普天中普防雷科技有限公司 | Double-layer metal clearance type surge protection device |
| CN206533031U (en) * | 2017-02-27 | 2017-09-29 | 武汉爱劳高科技有限责任公司 | Overvoltage protection system trigger-type Multiple level multichannel protection device |
| CN207410028U (en) * | 2017-11-20 | 2018-05-25 | 苏州工业园区科佳自动化有限公司 | A kind of switching type power supply lightning protection device of band dropout protection |
| CN208674592U (en) * | 2018-06-28 | 2019-03-29 | 菲尼克斯亚太电气（南京）有限公司 | Symmetric form AC/DC universal multilayer clearance lightning-proof device and its circuit structure |
-
2018
- 2018-06-28 CN CN201810684561.6A patent/CN108899762B/en active Active
-
2019
- 2019-06-26 DE DE102019209243.8A patent/DE102019209243A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1560187A (en) * | 1978-02-22 | 1980-01-30 | Anvar | Miniature lightning protector |
| CN201898329U (en) * | 2010-12-11 | 2011-07-13 | 株洲普天中普防雷科技有限公司 | Double-layer metal clearance type surge protection device |
| CN206533031U (en) * | 2017-02-27 | 2017-09-29 | 武汉爱劳高科技有限责任公司 | Overvoltage protection system trigger-type Multiple level multichannel protection device |
| CN207410028U (en) * | 2017-11-20 | 2018-05-25 | 苏州工业园区科佳自动化有限公司 | A kind of switching type power supply lightning protection device of band dropout protection |
| CN208674592U (en) * | 2018-06-28 | 2019-03-29 | 菲尼克斯亚太电气（南京）有限公司 | Symmetric form AC/DC universal multilayer clearance lightning-proof device and its circuit structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108899762A (en) | 2018-11-27 |
| DE102019209243A1 (en) | 2020-01-02 |
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