CN212210483U - Plug-in multilayer clearance type surge protector - Google Patents

Abstract

The utility model discloses a plug-in multilayer clearance type surge protector, including base and plug in the surge protection module of base, surge protection module includes clearance subassembly, tripping device and is used for bearing clearance subassembly, tripping device's main part spare, the main part spare on be provided with break away from shell fragment and the separated partition layer of clearance subassembly with tripping device, the through-hole has been seted up on the partition layer, a pin of clearance subassembly is provided with the welding utmost point, the welding utmost point with break away from the shell fragment and constitute in through-hole department welding and break away from the solder joint. Plug-in multilayer clearance type surge protector can quick plug, convenient to use, can be reliable provide multichannel safeguard function, simple structure, compactness, occupation space is little, the through-flow capacity is good, the safety in utilization is high.

Description

Plug-in multilayer clearance type surge protector

Technical Field

The utility model relates to an electrical equipment protects technical field, especially relates to a plug-in multilayer clearance type surge protector.

Background

The surge protector can be used for protecting surge caused by lightning effect and the like. The surge protector is arranged in a protected system, and when a surge is generated on a line in the system, the surge protector acts to limit transient overvoltage on the line and release surge current, so that various electronic and electric devices in the system are protected.

The gap type surge protector is mainly applied to the front end of a power system for surge protection. In the environment where the surge protector is installed, the surge energy is large, the power source energy is high, and the ambient working environment condition is poor, which may cause the deterioration of the surge protector.

However, the existing gap type surge protection device has unreasonable structure and large occupied space, and is difficult to meet the requirement of large current capacity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task that provides improve prior art, provide a plug-in multilayer clearance type surge protector, solve clearance type surge protector structure among the prior art unreasonable, occupation space is big, is difficult to satisfy the problem of big throughput capacity requirement.

For solving the above technical problem, the technical scheme of the utility model is that:

the utility model provides a plug-in multilayer clearance type surge protector, includes base and plug in the surge protection module of base, surge protection module includes clearance subassembly, tripping device and is used for bearing clearance subassembly, tripping device's main part spare, the main part spare on be provided with the separation layer that breaks away from shell fragment and clearance subassembly with tripping device, the through-hole has been seted up on the separation layer, a pin of clearance subassembly is provided with the welding utmost point, the welding utmost point constitute in through-hole department welding with breaking away from the shell fragment and break away from the solder joint. Plug-in multilayer clearance type surge protector simple structure, compactness, occupation space is little, clearance subassembly is separated through the partition layer with tripping mechanism, strengthens the insulation of each inside part of module, can reduce space isolation distance to improve the electrode size, improve the electrode through-flow capacity, improve the safety in utilization. When the overload current passes, the solder between the separation spring plate and the welding electrode is melted due to high temperature, so that the separation spring plate is separated from the welding electrode under the action of the elastic force of the separation spring plate to form open circuit, the electrical isolation effect is reliably achieved, the separation layer is favorable for cutting off electric arcs, and the electrical isolation effect after the overload current is tripped is guaranteed. This application adopts the mechanism of plug-in, ensures to have sufficient surge barrier propterty, maintains and changes convenient and fast.

Furthermore, a plurality of surge protection modules are plugged on the base to form multi-path protection, so that the protection performance is good.

Furthermore, the base is provided with an N end, a PE end and k independent L ends, wherein k is more than or equal to 1 and is an integer, and surge protection modules are respectively inserted between the N end and the PE end and between each L end and the PE end; or plug-in connected surge protection modules are respectively arranged between the N end and the PE end and between each L end and the N end;

or the base is provided with a PE end and k independent L ends, wherein k is more than or equal to 1 and is an integer, and surge protection modules in plug-in connection are respectively arranged between each L end and the PE end.

Further, the clearance subassembly include graphite clearance subassembly, metal clearance subassembly, gas discharge tube subassembly one of them type or two kinds of at least combination type, different surge protection modules on the base adopt the clearance subassembly of the same or different grade type, and nimble suitability is good, can select graphite clearance subassembly, gas discharge tube subassembly, metal clearance etc. as clearance subassembly as required, utilizes the difference of clearance subassembly self impedance, influences surge bleeder path current, according to different needs, perfects surge protection's ability.

Further, the range upon range of orientation of clearance subassembly is along surge protection module's plug direction, and the structure is compacter, can effectively increase the range upon range of quantity of clearance subassembly, improves the current capacity, and can more be favorable to setting up tripping device, the trigger circuit board of clearance subassembly is located the side of the range upon range of orientation of clearance subassembly, clearance subassembly and trigger circuit board carry out electrical connection through arranging the needle, and occupation space is little, be favorable to improving electrode size and the unobstructed nature of current path, be favorable to improving the current capacity, the difficult situation that crushes trigger circuit board that appears, and the stability in use is good.

Furthermore, the gap assembly comprises n discharge gaps and n-1 trigger circuits which are sequentially connected in series between the first terminal and the second terminal, one end of each trigger circuit of the n-1 trigger circuits is sequentially connected with a common end between n-1 adjacent discharge gaps, and the other end of each trigger circuit is connected with the second terminal, wherein n is more than or equal to 2, and n is an integer. The trigger circuit can reduce the gap starting voltage and realize better surge protection

Furthermore, the tripping mechanism further comprises an isolating piece and an elastic piece, wherein the elastic piece is in an energy storage state before the separation elastic piece and the welding electrode are not disconnected, and the isolating piece is pushed to move to the position between the separation elastic piece and the welding electrode for electrical isolation after the separation elastic piece and the welding electrode are separated. When an extra-large overload current flows, the generated heat leads the solder between the separation elastic sheet and the welding electrode to melt, so that the separation elastic sheet is separated from the welding electrode in a tripping way under the action of the elastic force of the separation elastic sheet, the elastic piece releases elastic potential energy, the isolating piece moves to the position between the separation elastic sheet and the welding electrode under the action of the elastic piece, the distance between the separation elastic sheet and the welding electrode can be increased by the isolating piece, the purposes of electrical isolation and arc extinction are achieved, equipment is effectively protected, and the use safety is improved. The isolating piece extends from the top side of the main body piece in the plugging direction to the bottom side of the main body piece in the plugging direction along the side wall of the main body piece to form a remote signaling sliding block, the base is provided with a remote signaling assembly which is respectively matched with the remote signaling sliding block of each surge protection module, so that the plugging multilayer gap type surge protection device has a remote signaling function, monitors the working state of the surge protection device in real time, can be found at the first time when the surge protection device fails, and improves the timeliness of maintenance, the isolating piece is provided with a first indicating surface, the main body piece is provided with a second indicating surface, the first indicating surface is displaced relative to the second indicating surface along with the isolating piece after the separating of the elastic piece and the welding electrode to indicate the working state, the first indicating surface can be overlapped on the surface of the second indicating surface when the surge protection device is not in a tripping state, and the first indicating surface is displaced to expose the second indicating surface after the surge protection device is tripped, the second indicating surface may be exposed when the surge protector is not tripped, and the first indicating surface may be displayed by moving the first indicating surface to a surface covering the second indicating surface after the surge protector is tripped, so that the operating state of the surge protector can be intuitively grasped by cooperation of the first indicating surface and the second indicating surface, and whether the surge protector is tripped or not can be accurately grasped.

Further, the base on be provided with the electric mortiser interface that the electrode of power supply surge protection module carries out the electricity and connects, the electric mortiser interface including wholly be the metal elasticity clamping piece of U-shaped to the both sides wall of the U-shaped structure of metal elasticity clamping piece or a lateral wall are bent to the inboard and are formed the block arch, surge protection module's electrode surface is provided with the spacing groove that the thickness attenuate formed and/or the spacing arch that the thickness bodiness formed, improves centre gripping stability, the stability of guarantee electricity connection.

Furthermore, the thickness of the electrode of the surge protection module is 0.3-0.6 mm more than the width value of the narrowest part of the opening width of the metal elastic clamping piece, the thickness of the electrode of the surge protection module is 0.9-2 mm, the width of the electrode is 6-12 mm, the narrowest part of the opening width of the metal elastic clamping piece is 0.5-1.6 mm, the smoothness of plugging and unplugging is guaranteed, the high current capacity is guaranteed, and balance is achieved between the smoothness of plugging and unplugging and the high current capacity.

Further, metal elasticity clamping piece adopt beryllium bronze or tin bronze to make, electric conductive property is good, the big discharge capacity of guarantee to have good elasticity, stability when the guarantee plug is connected, a plurality of metal elasticity clamping piece makes up integratively, constitutes the busbar structure, still is provided with anti-disengaging structure between metal elasticity clamping piece and the electrode, anti-disengaging structure includes that the inboard bellied anticreep that sets up in the block is protruding is protruding, improves plug connection stability, prevents that surge protection module from deviating from by accident on the base.

Compared with the prior art, the utility model discloses the advantage lies in:

the plug-in multilayer gap type surge protector can reliably provide a protection function, can reliably realize multi-path protection, has simple and compact structure, small occupied space, high use safety, convenient and quick maintenance and replacement and low cost by adopting a plug-in structure, and meets the requirement of miniaturization;

the functions of separation, alarm and remote signaling are realized, the improvement of the through-current capacity is realized through reasonable arrangement, the protection functions of 1+1, 2+0, 3+1, 4+0 and other multi-path forms are realized, and the protection performance is good;

the 1+1 circuit structure can realize the protection between L-N and N-PE;

the circuit structure in the 2+0 form can realize the protection between L-PE and N-PE;

the 3+0 circuit structure can realize the protection between two paths of L-PE and one path of N-PE;

the 3+1 type circuit structure can realize the protection between three paths of L-N and one path of N-PE;

the circuit structure in the form of 4+0 can realize the protection between three paths of L-PE and one path of N-PE.

Drawings

Fig. 1 is a schematic view of the overall structure of a plug-in multilayer gap type surge protector;

fig. 2 is a schematic exterior view of a surge protection module;

fig. 3 is a schematic structural diagram of the inside of the surge protection module;

FIG. 4 is a rear side view of the structure of FIG. 3;

fig. 5 is a schematic cross-sectional view of a surge protection module mated with a base;

FIG. 6 is a schematic view of the internal structure of the base;

fig. 7 is a schematic circuit diagram of a plug-in multilayer gap type surge protector;

fig. 8 is a schematic diagram of another circuit structure of the plug-in multilayer gap type surge protector;

fig. 9 is a schematic diagram of another circuit structure of the plug-in multi-layer gap type surge protector;

fig. 10 is a schematic diagram of another circuit structure of the plug-in multi-layer gap type surge protector;

fig. 11 is a schematic diagram of another circuit structure of the plug-in multi-layer gap type surge protector;

fig. 12 is a schematic view of another overall structure of the plug-in multilayer gap type surge protector;

FIG. 13 is a schematic structural diagram of the second embodiment;

fig. 14 is a circuit configuration diagram according to a second embodiment;

FIG. 15 is a schematic circuit diagram of another embodiment;

fig. 16 is a schematic circuit diagram of a third embodiment;

fig. 17 is a schematic circuit diagram of a fourth embodiment;

fig. 18(a) to (g) are explanatory views of the schematic circuit configuration described above;

figure 19 is a schematic diagram of one configuration of the electrical plug interface connection of the poles of the surge protection module with the base;

figure 20 is a schematic view of an alternative configuration of the electrical plug interface connection of the poles of the surge protection module with the base;

figure 21 is a schematic view of yet another configuration of the electrical plug interface connection of the poles of the surge protection module with the base;

FIG. 22 is a schematic diagram of another embodiment of a metal spring clip;

FIG. 23 is a schematic diagram of a circuit configuration of a gap assembly;

FIG. 24 is a schematic diagram of another circuit configuration of the gap assembly;

fig. 25 is a schematic diagram of another circuit configuration of the gap assembly.

The device comprises a base a, a surge protection module b, a gap component 1, a tripping mechanism 2, a main body component 3, a shell 4, a trigger circuit board 11, a welding electrode 12, a separation spring sheet 21, a spacer 22, an elastic piece 23, a first indication surface 24, a telecommand slide block 25, a first electrode 31, a second electrode 32, an anti-reverse-insertion positioning piece 33, a second indication surface 34, a guide convex strip 35, a third electrode 36, an indication window 41, a telecommand component 5, a telecommand wiring port 6, a metal elastic clamping piece 7, a limiting groove 311, a limiting bulge 312, a clamping bulge 71, an anti-release bulge 72 and a notch 73;

fig. 18(a) represents a status indication, fig. 18(b) represents a remote signaling, fig. 18(c) represents a trip mechanism, fig. 18(d) represents a plug structure, fig. 18(e) represents a graphite gap assembly or a metal gap assembly, fig. 18(f) represents a gas discharge tube assembly, and fig. 18(g) represents an indication circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses a plug-in multilayer clearance type surge protector, simple structure, compactness, occupation space is little, installs and removes the change convenience, effectively ensures the circulation ability simultaneously, satisfies the demand of miniaturized development, and the dropout reliability is high, and protective properties is good.

Example one

As shown in fig. 1 to 6, a plug-in multilayer gap type surge protector mainly includes a base a and a surge protection module b plugged in the base a, wherein the base a is provided with a U-shaped groove for accommodating the surge protection module b, the surge protection module b is substantially rectangular, the bottom side of the plug-in direction of the surge protection module b is provided with an electrode for plugging, the electrode includes a first electrode 31 and a second electrode 32, and the bottom side of the U-shaped groove of the base a is provided with an electrical plug interface for inserting the first electrode 31 and the second electrode 32 for electrical connection;

as shown in fig. 19 and 20, the first electrode 31 and the second electrode 32 are plug heads electrically connected to the base a of the surge protection module b, the thickness of the first electrode 31 and the second electrode 32 is 1 to 3mm, preferably 0.8 to 1.5mm, and the width of the first electrode 31 and the second electrode 32 is 6 to 12 mm; the electric socket interface on the base a comprises a metal elastic clamping piece 7, a first electrode 31 and a second electrode 32 are inserted into the metal elastic clamping piece 7 and stably clamped by the metal elastic clamping piece 7 to ensure good electric contact, the metal elastic clamping piece is integrally in a U-shaped structure, two side walls or one side wall of the U-shaped structure are bent inwards to form a clamping bulge 71 so as to improve the clamping stability, the narrowest part of the opening width of the metal elastic clamping piece (the opening width between the clamping bulge 71 and the opposite side wall) is 0.5-1.2 mm, the thickness of the electrode is 0.3-0.6 mm more than the width of the narrowest part of the opening width of the metal elastic clamping piece, the electric connection stability of a surge protection module b and the base a is ensured, the bad electric contact condition is avoided, for further ensuring the connection reliability, a limiting groove 311 formed by thickness reduction (a limiting bulge 312 formed by thickness thickening is arranged on the surface of the first electrode 31 and the second electrode 32), this spacing groove 311 or spacing arch 312 and the protruding 71 department block of block on the lateral wall of metal elasticity clamping piece 7 to reach the effect of grafting location, effectively improve connection stability, it is specific, the narrowest department of metal elasticity clamping piece opening width is 1.1mm, and the thickness of first electrode 31 and second electrode 32 is 1.5mm, the thickness of first electrode 31 and second electrode 32 of the spacing groove 311 department of surface thickness attenuate is 1.3mm, or the thickness of first electrode 31 and second electrode 32 of spacing arch 312 department is 1.7mm, the width of first electrode 31 and second electrode 32 is 9 mm.

The metal elastic clamping piece can be made of beryllium bronze, tin bronze and the like, has good electrical ablation resistance and conductivity, has good elasticity, and ensures the stability during plugging and unplugging connection; the side wall of the metal elastic clip can be provided with a notch 73 from the mouth part to the bottom side, so that the clamping elasticity can be improved; a plurality of metal elasticity clamping piece is connected as an organic whole, constitutes the busbar structure, can be that the independent metal elasticity clamping piece of a plurality of is fixed on a piece that converges, also can be by the direct integrated into one piece of sheetmetal go out the metal elasticity clamping piece that a plurality of interval set up, structural stability is better.

And can also set up anti-disengaging structure between metal elastic clamping piece and the electrode, anti-disengaging structure includes the protruding 72 of inboard bellied anticreep that sets up on block arch 71, and the protruding 72 of anticreep effectively improves plug stability with spacing protruding 312 on the electrode cooperates, avoids appearing unexpected situation of deviating from, improves plug-in multilayer clearance type surge protector and plays protect function's stability.

Specifically, the surge protection module b mainly includes a gap component 1, a tripping mechanism 2, a main body member 3 and a housing 4, the gap component 1 and the tripping mechanism 2 are loaded on the main body member 3, the gap component 1 can be a graphite gap component, a gas discharge tube component, a metal gap component and the like, and can also be a combination type of the graphite gap component and the gas discharge tube component, and the housing 4 covers the gap component 1, the tripping mechanism 2 and the main body member 3;

as shown in FIGS. 23 to 25, the gap assembly 1 includes N discharge gaps and N-1 trigger circuits, where N is equal to or greater than 2, N is an integer, F1-Fn in the figure represents a discharge gap, N1-Nn-1 represents a trigger circuit, N discharge gaps are sequentially connected in series between a first terminal and a second terminal, the first terminal and the second terminal lead out a pin for operating the gap assembly 1, a common end of the discharge gaps is provided between adjacent discharge gaps, so that a common end between N-1 adjacent discharge gaps is provided, one end of each trigger circuit of the N-1 trigger circuits is sequentially connected with the common end between N-1 adjacent discharge gaps, and then the other end of each trigger circuit is connected with the second terminal, thereby integrally forming a multi-layer gap structure, where the discharge gaps may be spark gaps, double spark gaps, The surge protection device comprises a gas discharge tube and a symmetrical gas discharge tube, wherein the trigger circuit is at least one of a capacitor, a resistor container, a piezoresistor, a thermistor, a transient diode or a gas discharge tube, the resistor container is formed by connecting a resistor and a capacitor in parallel, the electrode material of a multilayer gap structure can be metal or graphite, and different surge protection modules b on the same base a can adopt gap assemblies 1 with different numbers of discharge gaps. When the circuit between the first terminal and the second terminal has surge, the trigger circuits of N1-Nn-1 respectively trigger the discharge gaps F1-Fn to act, and finally the discharge gaps F1-Fn are all conducted to become low resistance to form an overvoltage bleeder circuit, so that the surge between the first terminal and the second terminal of the circuit is limited within the voltage range which can be borne by the electronic equipment, and the electronic equipment connected between the first terminal and the second terminal is protected. When the surge protector is overloaded and presents a low-resistance state or even a short-circuit state to the outside, the protection device acts to cut off the connection between the surge protector and the protected line, and the electric energy of the protected line is not continuously applied to the two ends of the surge protector any more, so that the operation of the protected line is not influenced.

In this embodiment, a welding electrode 12 is disposed on one pin of the gap component 1 (the pin of the gap component 1 may be directly used as a welding electrode, or an additional component is connected to the pin of the gap component 1 to form a welding electrode), another pin of the gap component 1 is electrically connected to the second electrode 32 disposed on the main body 3, and the welding electrode is disposed on the top side of the gap component 1 along the inserting and extracting direction, that is, the welding electrode is close to the top side of the surge protection module b along the inserting and extracting direction, and the stacking direction of the gap component 1 along the inserting and extracting direction of the surge protection module b, so that the structure is more compact, the stacking number of the gap components can be effectively increased, the through-current capacity can be improved, and a tripping mechanism can be more favorably disposed; the main body part 3 is provided with a cavity groove for placing the gap component 1, a partition layer is arranged on the side of the welding electrode, a through hole exposing the welding electrode 12 is arranged on the partition layer, the partition layer with the through hole is arranged on the top side of the main body part 3 along the plugging direction, the tripping mechanism 2 comprises a breaking away spring sheet 21 positioned on the other side of the partition layer, namely, the breaking away spring sheet 21 is positioned above the top side of the main body part 3, the breaking away spring sheet 21 is welded with the welding electrode at the through hole to form a breaking away welding point, the breaking away spring sheet 21 extends to the bottom side of the main body part 3 along the side wall of the main body part 3 from the top side of the main body part 3 in the plugging direction, the breaking away spring sheet 21 is electrically connected with a first electrode 31 arranged on the main body part 3, when an extra-large overload current flows, solder between the breaking away spring sheet and the welding electrode is melted due to high temperature, so that the breaking away spring sheet, thereby realizing the function of electric isolation.

In order to improve the electrical isolation effect, the trip mechanism 2 further comprises an isolating piece 22 and an elastic piece 23, the elastic piece 23 is in an energy storage state before the separation spring sheet 21 and the welding electrode are not disconnected, and the isolating piece 22 is pushed to move to a position between the separation spring sheet 21 and the welding electrode after the separation spring sheet 21 and the welding electrode are separated so as to increase the distance between the separation spring sheet 21 and the welding electrode to achieve the purposes of electrical isolation and arc extinction, specifically, the elastic piece 23 is a spring, one end of the spring is connected with the isolating piece 22, the other end of the spring is connected with the main body piece 3, in the embodiment, the spring is perpendicular to the plugging direction of the surge protection module b, when the separation spring sheet 21 and the welding electrode are tripped, the spring releases elastic force to drive the isolating piece 22 to linearly move in the direction perpendicular to the plugging direction, and finally, the isolating piece 22 moves to a position between the separation spring sheet 21, the electrical isolation effect is improved;

the isolating piece 22 is provided with a first indicating surface 24, the main body piece 3 is provided with a second indicating surface 34, the first indicating surface 24 and the second indicating surface 34 are positioned on the top side of the surge protection module b in the plugging direction, the top side of the shell is provided with an indicating window 41 for displaying the first indicating surface 24 and the second indicating surface 34, the first indicating surface 24 displaces relative to the second indicating surface 34 along with the isolating piece 22 after the separation of the elastic piece 21 and the welding electrode so as to indicate the working state, and the first indicating surface 24 or the second indicating surface 34 is observed respectively before and after the tripping of the indicating window 41, so that the working condition of the surge protector can be intuitively mastered, whether the surge protector trips or not can be accurately known, and the timeliness of maintenance is improved.

In order to remotely monitor the working state of the surge protector in real time, a remote signaling function is provided on the plug-in multilayer gap type surge protector, in the embodiment, the separation welding point is provided on the top side of the main body member 3 in the plug-in direction, so that the isolation member 22 mainly comprises a part which is positioned above the top side of the main body member 3 in the plug-in direction and is used for separating the separation spring sheet 21 from the welding electrode, then, the isolation member 22 extends from the top side of the main body member 3 in the plug-in direction along the side wall of the main body member 3 to the bottom side of the main body member 3 in the plug-in direction to form a remote signaling slider 25, so that the isolation member 22 and the remote signaling slider 25 are of an integral structure, the action reliability and the accuracy of the remote signaling slider 25 can be improved, the base a is provided with the remote signaling assembly 5 which is matched with the signaling slider 25 and is touched by the remote signaling slider 25, and when tripping occurs, the telecommand slide block 25 moves linearly in the direction perpendicular to the plugging direction, the position state of the telecommand slide block 25 changes, and then the touch state of the telecommand slide block 25 on the telecommand assembly 5 changes, the telecommand assembly 5 can be a telecommand of a normally open contact, a telecommand of a normally closed contact and the like, and finally the working state of the surge protector is monitored in real time, the working state can be found at the first time when the surge protector fails, and the timeliness of maintenance is improved; the base a is provided with a remote signaling wiring port 6 for the summary connection of the remote signaling sliding blocks 5, so that the number of remote signaling terminals is reduced, the wiring of customers is facilitated, and the centralized remote signaling is realized;

moreover, the part of the isolating piece 22 positioned on the side wall of the main body piece 3 is plate-shaped, so that the occupied space is reduced, the structure compactness is improved, and the improvement of the through-flow capacity is facilitated; in order to ensure that the isolating piece 22 can move stably and reliably under the action of the spring, a sliding guide mechanism is further arranged between the isolating piece 22 and the main body piece 3 and comprises a guide convex strip 35 arranged on the side wall of the main body piece 3, a sliding groove matched with the guide convex strip 35 is formed in the part, located on the side wall of the main body piece 3, of the isolating piece 22, the guide convex strip 35 is in a linear shape parallel to the spring, and therefore the effect of improving electrical isolation can be achieved when the isolating piece 22 is accurately moved to a position where the isolating piece is separated from the position between the elastic strip 21 and the welding electrode when tripping occurs.

In this embodiment, the trigger circuit board 11 of the gap component 1 is arranged in a direction perpendicular to the inserting and pulling direction of the surge protection module b, that is, the trigger circuit board 11 is located on the side of the gap component 1 in the stacking direction, so that the occupied space is small, the improvement of the through-current capacity is facilitated, the situation of crushing the trigger circuit board 11 is not easy to occur, and the use stability is good; the gap component 1 is composed on a single side, the two sides are provided with the pin headers, the trigger circuit board is connected with the graphite electrodes of the discharge gap through the metal pin headers, the occupied space is small, and the through-current capacity is improved.

In this embodiment, the separation spring 21 is connected to the first electrode 31 by a riveting structure, and the first electrode needs to bear lightning current, and the product is mounted, and the metal sheet material adopted by the first electrode needs to have sufficient thickness, and the separation spring needs sufficient elasticity, and if the thickness is too large, the elasticity is low, and it is difficult to stably and effectively realize trip separation, so that the thicknesses of the metal sheets needed by the separation spring and the first electrode are different, and the thicknesses of the metal sheets respectively meeting the performance requirements can be selected to manufacture, that is, the through-current capability of the first electrode 31 is ensured, and the separation spring 21 is also ensured to have good elasticity to trip and achieve the purpose of electrical isolation, and the implementation is convenient and the cost is low.

At the bottom of surge protection module b, namely, be provided with at the bottom side of main part 3 along the plug direction and prevent reverse plug location spare 33, prevent reverse plug location spare 33 and be protruding structure, base a on the bottom in the U-shaped groove be provided with prevent reverse plug location groove with preventing reverse plug location spare 33 matching, prevent reverse plug location spare 33 and can play the effect of direction and location, ensure that surge protection module b can be accurate the grafting to base a on, ensure that surge protection module b can normally stable play the guard action.

In this embodiment, the base a is used for a plurality of surge protection modules b to be inserted side by side, so that the structure is compact, and multipath protection can be provided.

Specifically, as shown in fig. 6, the plug-in multilayer gap type surge protector can be used for multi-path protection of three-phase power, the base a is provided with three independent L ends (specifically including an L1 end, an L2 end, an L3 end), an N end and a PE end, the L1 end, the L2 end and the L3 end can be used as three-phase a, B and C ends, the N end is used as a zero line end, the PE end is used as a ground line end, and the base a is provided with electrical plug interfaces respectively corresponding to the L1 end, the L2 end, the L3 end, the N end and the PE end;

as shown in fig. 7 to 9, a surge protection module b is respectively inserted and disposed between the end L1, the end L2, the end L3 and the end N, the gap component 1 of the surge protection module b is a graphite gap component, a surge protection module b is inserted and disposed between the end N and the end PE, and the gap component 1 of the surge protection module b is a graphite gap component or a gas discharge tube component.

As shown in fig. 10 and 11, a surge protection module b is respectively inserted and arranged between the end L1, the end L2, the end L3 and the end PE, and the gap assembly 1 of the surge protection module b is a graphite gap assembly; a surge protection module b is arranged between the N end and the PE end in a plugging mode, a gap assembly 1 of the surge protection module b is a graphite gap assembly or a gas discharge tube assembly, and the surge protection module b can be provided with or not provided with a remote signaling function and a state indicating function.

As shown in fig. 12, a plurality of surge protection modules b can be integrally combined together to form an integrated plug module, and the circuit protection form is consistent with that of the above, but the plug operation is easier, and the efficiency is improved.

Example two

As shown in fig. 13, the base a is provided with 1L end, an N end and a PE end, the base a is provided with electrical plug interfaces respectively corresponding to the L end, the N end and the PE end, and one base a is provided with two surge protection modules b by plugging;

as shown in fig. 14, a surge protection module b is respectively inserted between the L end and the N end, a gap component 1 of the surge protection module b is a graphite gap component, and a surge protection module b is inserted between the N end and the PE end, and the gap component 1 of the surge protection module b may be a graphite gap component, or may be a gas discharge tube component, etc., to form a 1+1 protection state.

As shown in fig. 15, a surge protection module b is respectively inserted between the L and PE ends, and the gap assembly 1 of the surge protection module b is a graphite gap assembly; a surge protection module b is arranged between the N end and the PE end in a plugging mode, and a gap component 1 of the surge protection module b can be a graphite gap component or a gas discharge tube component, so that a 2+0 protection state is formed.

EXAMPLE III

The base a is provided with three independent L ends (specifically comprising an L1 end, an L2 end and an L3 end) and a PE end, the L1 end, the L2 end and the L3 end can be used as three-phase A, B and C three-phase ends, the PE end is used as a ground wire end, and the base a is provided with electric plug interfaces respectively corresponding to the L end and the PE end;

as shown in fig. 16, one surge protection module b is inserted between the end L1, the end L2, the end L3 and the end PE, and the gap assembly 1 of the surge protection module b may be a graphite gap assembly, a gas discharge tube assembly, or the like.

Example four

The base a is provided with three independent L ends (specifically comprising an L1 end, an L2 end, an L3 end), an N end and a PE end, wherein the L1 end, the L2 end and the L3 end can be used as three-phase A, B and C three-phase ends, the N end is used as a zero line end, the PE end is used as a ground wire end, and the base a is provided with electric plug interfaces respectively corresponding to the L1 end, the L2 end, the L3 end, the N end and the PE end;

as shown in fig. 17, a surge protection module b is respectively inserted between the end L1, the end L2, the end L3 and the end N, a gap component 1 of the surge protection module b is a graphite gap component, an indicating circuit connected in parallel to the gap component 1 is arranged on the surge protection module b, an indicating lamp is arranged on the indicating circuit, when the plug-in multilayer gap type surge protector normally works, the tripping mechanism is in an electrically conductive state, the indicating lamp is in an energized and lighted state at the moment, which indicates that the surge protector is normal, and when the tripping mechanism is disconnected, the indicating circuit is powered off, so that the indicating lamp is turned off, thereby indicating that the surge protector is abnormal; a surge protection module b is inserted between the N end and the PE end, and a gap component 1 of the surge protection module b is a graphite gap component or a gas discharge tube component.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a plug-in multilayer clearance type surge protector, its characterized in that includes base (a) and plug in surge protection module (b) of base (a), surge protection module (b) including clearance subassembly (1), tripping device (2) and be used for bearing main part (3) of clearance subassembly (1), tripping device (2), main part (3) on be provided with break away from shell fragment (21) and the separated layer of clearance subassembly (1) with tripping device (2), the through-hole has been seted up on the layer of breaking away, a pin of clearance subassembly (1) is provided with welding utmost point (12), welding utmost point (12) and break away from shell fragment (21) and constitute the solder joint that breaks away from in through-hole department welding.

2. The pluggable multilayer gap type surge protector according to claim 1, wherein the base (a) is plugged with a plurality of surge protection modules (b) to form a multi-path protection.

3. The pluggable multilayer gap type surge protector according to claim 2, wherein the base (a) is provided with an N end, a PE end and k independent L ends, wherein k is greater than or equal to 1, k is an integer, and surge protection modules (b) are respectively pluggable between the N end and the PE end and between each L end and the PE end; or surge protection modules (b) which are connected in a plugging manner are respectively arranged between the N end and the PE end and between each L end and the N end;

or the base (a) is provided with a PE end and k independent L ends, wherein k is more than or equal to 1, k is an integer, and a surge protection module (b) in plug-in connection is respectively arranged between each L end and the PE end.

4. A plug-in multilayer gap-type surge protector according to claim 2, wherein the gap assembly (1) comprises one or a combination of at least two of a graphite gap assembly, a metal gap assembly, a gas discharge tube assembly, and the same or different types of gap assemblies (1) are used for different surge protection modules (b) on the base (a).

5. The pluggable multilayer gap type surge protector according to claim 1, wherein the stacking direction of the gap assembly (1) is along the plugging direction of the surge protection module (b), the trigger circuit board (11) of the gap assembly (1) is located at the side of the stacking direction of the gap assembly (1), and the gap assembly (1) and the trigger circuit board (11) are electrically connected through pin headers.

6. A plug-in multilayer gap type surge protector according to any one of claims 1 to 5, wherein the gap assembly (1) comprises n discharge gaps and n-1 trigger circuits connected in series between the first terminal and the second terminal, one end of each of the n-1 trigger circuits is connected with a common end between n-1 adjacent discharge gaps, and the other end of each of the n-1 trigger circuits is connected with the second terminal, wherein n is an integer and is greater than or equal to 2.

7. The pluggable multilayer gap type surge protector according to any one of claims 1 to 5, wherein the trip mechanism (2) further comprises a spacer (22) and an elastic member (23), the elastic member (23) is in an energy storage state before the separation spring (21) and the welding electrode are not disconnected, and pushes the spacer (22) to move to the separation spring (21) and the welding electrode for electrical isolation after the separation spring (21) and the welding electrode are separated, the spacer (22) extends from the top side of the main body member (3) in the plugging direction to the bottom side of the main body member (3) in the plugging direction along the sidewall of the main body member (3) to form a remote signaling slider (25), the base (a) is provided with a remote signaling assembly (5) respectively engaged with the remote signaling slider (25) of each surge protection module (b), the spacer (22) is provided with a first indicating surface (24), the main body piece (3) is provided with a second indicating surface (34), and the first indicating surface (24) displaces relative to the second indicating surface (34) along with the isolating piece (22) after the separating spring piece (21) is separated from the welding electrode so as to indicate the working state.

8. The pluggable multilayer gap type surge protector according to any one of claims 1 to 5, wherein the base (a) is provided with an electrical plug interface for electrically connecting an electrode of the surge protection module (b), the electrical plug interface comprises a metal elastic clip (7) which is integrally U-shaped, two side walls or one side wall of the U-shaped structure of the metal elastic clip are bent inwards to form a clamping protrusion (71), and the surface of the electrode of the surge protection module (b) is provided with a limiting groove (311) formed by reducing the thickness and/or a limiting protrusion (312) formed by increasing the thickness.

9. The plug-in multilayer gap type surge protector according to claim 8, wherein the thickness of the electrode of the surge protection module (b) is 0.3 to 0.6mm more than the width of the narrowest part of the opening width of the metal elastic clip, the thickness of the electrode of the surge protection module (b) is 0.9 to 2mm, the width of the electrode is 6 to 12mm, and the narrowest part of the opening width of the metal elastic clip is 0.5 to 1.6 mm.

10. The pluggable multilayer gap type surge protector according to claim 8, wherein the plurality of metal elastic clips are integrated; an anti-falling structure is further arranged between the metal elastic clamping piece and the electrode, and the anti-falling structure comprises an anti-falling bulge (72) which is arranged on the clamping bulge (71) and protrudes towards the inner side.

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