CN111585259A - Surge protector - Google Patents

Abstract

The invention discloses a surge protector, which comprises a base and a surge protection module inserted in the base, wherein an electric connection end used for being electrically connected with the outside is arranged on the base, the electric connection end comprises a PE end, an M end is also arranged on the base, an M-PE surge protection module is electrically connected between the M end and the PE end, a surge protection module is arranged between at least one of the other electric connection ends and the M end, and the M-PE surge protection module is inserted and connected between the M end and the PE end on the base; or, the M-PE surge protection module is fixedly arranged on the base. The M end is arranged, and the M-PE surge protection module is electrically connected between the M end and the PE end to realize multi-path protection, so that the number of modules is reduced, the through-current capacity is effectively improved, the structure is simple and compact, the occupied volume is small, a plug-in structure is adopted, the maintenance and the replacement are convenient and quick, and the cost is low.

Description

Surge protector

Technical Field

The invention relates to the technical field of electrical equipment protection, in particular to a surge protection device.

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 electrical equipment in the system is protected.

When multi-path surge protection is needed, the volume of the conventional surge protector is too large, the number of modules can be increased if a circuit for realizing the multi-path protection of L-N, L-PE and N-PE is difficult, a connecting line from L to PE is too long, residual voltage is high, surge protection performance is influenced, and the through-current capacity is difficult to be increased due to the limitation of the size of a product.

Disclosure of Invention

The technical problem to be solved and the technical task provided by the invention are to improve the prior art, provide a surge protector, and solve the problems that the surge protector in the prior art has unreasonable structure, poor multipath protection performance and difficulty in meeting the requirement of large current capacity.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a surge protector comprises a base and a surge protection module inserted in the base, wherein an electric connection end used for being electrically connected with the outside is arranged on the base, the electric connection end comprises a PE end, an M end is also arranged on the base, an M-PE surge protection module is electrically connected between the M end and the PE end, a surge protection module is arranged between at least one of the other electric connection ends and the M end, and the M-PE surge protection module is inserted in and connected between the M end and the PE end on the base; or, the M-PE surge protection module is fixedly arranged on the base. The surge protector provided by the invention has the advantages that the M end is arranged, the M-PE surge protection module is electrically connected between the M end and the PE end to effectively increase the through-current capacity, the performance of multi-path protection can be effectively improved, the M-PE surge protection module is commonly used for different protection routes, the number of components required by the whole surge protector is reduced, the number of modules is reduced while multi-path protection is realized, the through-current capacity is effectively improved, the structure is simple and compact, the occupied size is small, the requirement of miniaturization is met, the use safety is high, a plug-in structure is adopted, the maintenance and the replacement are convenient and rapid, and the cost is low.

Furthermore, the electric connection end of the base further comprises an N end and k independent L ends, wherein k is larger than or equal to 1 and is an integer, surge protection modules are respectively arranged between the N end and the M end and between each L end and the M end in a plugging and pulling mode, protection among a plurality of paths of L-M, one path of N-M and one path of PE-M is achieved, flexibility and applicability are good, protection is comprehensive, and stability is good.

Further, the surge protection module comprises a gap assembly, the M-PE surge protection module comprises a gap type protection assembly, and the gap assembly and the gap type protection assembly comprise one or a combination of at least two of a graphite gap assembly, a metal gap assembly and a gas discharge tube assembly and have excellent through-flow capacity.

Furthermore, the gap component and the gap type protection component both comprise 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, so that the surge protection capability is better.

Furthermore, the total number of the discharge gaps between the L end and the PE end or between the N end and the PE end is 4-16, the number of the discharge gaps of the M-PE surge protection module is 1-8, and the number of the discharge gaps of the surge protection module between the N end and the M end and/or between the L end and the M end is 3-8. The number of the discharge gaps of the surge protection modules between the L-M, N-M is more than that of the M-PE surge protection modules, and when the surge protection modules are triggered at the same time, the starting voltage is better than that when the surge protection modules and the M-PE surge protection modules are the same in number, so that a better surge protection effect is realized; when the number of the discharge gaps of the surge protection modules between the L-M, N-M is the same as that of the M-PE surge protection modules, a complete symmetrical structure can be realized, the same protection effect can be realized, and the wiring error can be prevented.

Furthermore, the surge protection module plugged between the N end and the M-PE surge protection module plugged between the M end and the PE end are combined into an integral plugging module, so that the structure is compact, the plugging operation times are reduced, and the use is easier.

Furthermore, the integral plugging module comprises an integral protection assembly formed by connecting the gap assembly and the gap type protection assembly in series, and the common end of the gap assembly and the gap type protection assembly is electrically connected with the M end on the base, so that the structure is compact, the occupied space is small, and the integral plugging module is easy to manufacture and realize.

Furthermore, the whole plug module comprises a first electrode, a second electrode and a third electrode which are respectively electrically connected with an N end, a PE end and an M end on the base a, one end of the whole protection assembly is electrically connected with the first electrode through a tripping assembly, the other end of the whole protection assembly is electrically connected with the second electrode, a public end of the whole protection assembly is electrically connected with the third electrode, the structure is compact, the occupied space is small, the whole plug module is integrally plugged on the base, and the plug operation is simple.

Furthermore, the M-PE surge protection module is arranged in the base and located on the side where the PE end is located, and the M-PE surge protection module does not exceed the end face of the base on the side where the PE end is located. The M-PE surge protection module is short in connection with the PE end, the space required by connection can be reduced, the through-current capacity is guaranteed, the structure is compact, and the occupied space is small.

Furthermore, the M-PE surge protection module is also provided with a tripping component connected with the gap type protection component and a remote signaling mechanism used for indicating the working state, when an extra-large overload current flows, the tripping component trips to form open circuit, the extra-large overload current cannot flow through the gap type protection component, the electrical isolation effect is reliably achieved, the protection safety is improved, the working state of the surge protector is monitored by the remote signaling mechanism in real time, the surge protector can be found at the first time when the surge protector fails, and the maintenance timeliness is improved.

Compared with the prior art, the invention has the advantages that:

the surge protector effectively increases the through-current capacity, can effectively improve the performance of multi-path protection, and the M-PE surge protection module is used for different protection routes, so that the number of components required by the whole surge protector is reduced, the number of modules is reduced while multi-path protection is realized, the through-current capacity is effectively improved, the structure is simple and compact, the occupied volume is small, the requirement of miniaturization is met, the use safety is high, a plug-in structure is adopted, the maintenance and the replacement are convenient and quick, and the cost is low;

the functions of separation, alarm and remote signaling are realized, the improvement of the through-current capacity is realized through reasonable arrangement, the 4+1 multi-path protection function is realized, the number of protection paths is large, and the stability is good.

Drawings

Fig. 1 is a schematic view of the overall structure of a 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 structural view of another embodiment of a surge protection module;

FIG. 7 is a rear side view of the structure of FIG. 6;

fig. 8 is a circuit schematic of yet another embodiment of a surge protection module;

fig. 9 is a schematic structural view of yet another embodiment of a surge protection module;

fig. 10 is a schematic structural view of yet another embodiment of a surge protection module;

fig. 11 is a schematic view of the overall structure of another embodiment of the surge protector;

fig. 12 is a schematic view of the overall structure of yet another embodiment of the surge protector;

FIG. 13 is a schematic diagram of the circuit configuration of FIG. 12;

fig. 14 is a schematic view of a base structure of yet another embodiment of a surge protector;

FIG. 15 is a schematic structural view of an integral pluggable module mated with the base shown in FIG. 14;

FIG. 16 is a schematic circuit diagram of the integrated pluggable module shown in FIG. 15;

FIG. 17 is a schematic structural diagram of another embodiment of an integral pluggable module;

FIG. 18 is a schematic diagram of a circuit configuration of the integrated pluggable module shown in FIG. 17 in cooperation with a base;

fig. 19 is a schematic view of a base structure of yet another embodiment of a surge protector;

FIG. 20 is a schematic diagram of a circuit structure formed by the base shown in FIG. 19;

fig. 21 is a schematic view of a base structure of yet another embodiment of a surge protector;

fig. 22 is a schematic view of the base structure of fig. 21 with the surge protection module removed;

fig. 23 is a schematic structural view of the surge protection module of fig. 21;

FIG. 24 is a rear side view of the structure of FIG. 23;

FIG. 25 is a schematic diagram of a circuit structure formed by the base shown in FIG. 21;

fig. 26(a) to (g) are explanatory views of the schematic circuit configuration described above;

FIG. 27 is a schematic diagram of a circuit configuration of a gap assembly;

FIG. 28 is a schematic diagram of another circuit configuration of the gap assembly;

fig. 29 is a schematic diagram of another circuit configuration of the gap assembly.

The device comprises a base a, a surge protection module b, a surge protection module c, an integral plugging module d, a gap assembly 1, a tripping mechanism 2, a main body piece 3, a shell 4, a trigger circuit board 11, a welding electrode 12, a separation spring plate 21, an isolating piece 22, an elastic piece 23, a first indicating surface 24, a remote signaling slider 25, a state change indicating surface 26, a remote signaling spring plate 27, a first electrode 31, a second electrode 32, an anti-reverse plugging positioning piece 33, a second indicating surface 34, a guide convex strip 35, a third electrode 36, an indicating window 41, a remote signaling assembly 5, a remote signaling wiring port 6, a gap type protection assembly c1, a tripping spring plate c2, an isolating component c3, an elastic component c4 and an integral protection assembly d 1;

fig. 26(a) represents a status indication, fig. 26(b) represents a remote signaling, fig. 26(c) represents a trip mechanism, fig. 26(d) represents a plug structure, fig. 26(e) represents a graphite gap assembly or a metal gap assembly, fig. 26(f) represents a gas discharge tube assembly, and fig. 26(g) represents an indication circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The surge protector disclosed by the embodiment of the invention can realize flexible and stable multi-path protection, has the advantages of good protection performance, good circulation capacity, simple and compact structure, small occupied space, convenience in assembly, disassembly and replacement, high tripping reliability and good use safety, and meets the requirements of miniaturization development.

Example one

As shown in fig. 1 to 5, a surge protector mainly includes a base a and a surge protection module b inserted in and removed from the base a, 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 surge protection module b is provided with a first electrode 31 and a second electrode 32 at the bottom side in the insertion and removal direction, the base a is provided with an electrical plug interface at the bottom side of the U-shaped groove for inserting the first electrode 31 and the second electrode 32 for electrical connection;

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

as shown in FIGS. 27 to 29, 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 connected in series between a first terminal and a second terminal in sequence, 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 arranged between adjacent discharge gaps, a common end between N-1 adjacent discharge gaps is provided, one end of each trigger circuit of the N-1 trigger circuits is connected with the common end between N-1 adjacent discharge gaps in sequence, and then the other end of each trigger circuit is connected with the second terminal, thereby forming a multilayer gap structure as a whole, where the discharge gaps may be spark gaps, and trigger circuits, 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, wherein the resistor container is formed by connecting the resistor and the capacitor in parallel, the electrode material of the multilayer gap structure can be metal or graphite, and different surge protection modules b on the same base a can adopt gap components 1 with different discharge gap numbers. When the circuit between the first terminal and the second terminal has surge, the trigger circuits of N1-Nn-1 trigger the discharge gaps F1-Fn to act respectively, 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 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 plugging and unplugging direction, that is, the welding electrode is close to the top side of the surge protection module b along the plugging and unplugging direction, and the stacking direction of the gap component 1 is along the plugging and unplugging 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 capability is improved, and a tripping mechanism can be more favorably; the main body piece 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 for exposing the welding electrode 12 is arranged on the partition layer, the partition layer with the through hole can improve the electrical isolation effect after tripping, the protection performance and the safety and reliability are improved, the partition layer with the through hole is arranged on the top side of the main body piece 3 along the plugging direction, the tripping mechanism 2 comprises a tripping elastic sheet 21 arranged on the other side of the partition layer, namely, the tripping elastic sheet 21 is arranged above the top side of the main body piece 3, the tripping elastic sheet 21 is welded with the welding electrode at the through hole to form a tripping welding point, the tripping elastic sheet 21 extends from the top side of the main body piece 3 along the side wall of the main body piece 3 in the plugging direction to the side wall of the main body piece 3, and the tripping elastic sheet 21 is electrically connected with a first electrode 31 arranged on the, when an extra-large overload current flows, 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 to form open circuit under the action of the elasticity of the separation spring plate, the electrical isolation effect is further realized, the protection performance is effectively improved, the surge protection module can normally play a surge protection role again immediately after being integrally replaced, the maintenance and the replacement are easy, and the cost is low.

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 and unplugging 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 and unplugging direction, and finally, the isolating piece 22 moves to a position between the separation, the effect of electrical isolation is improved. When the passing of an extra-large overload current occurs, the generated heat leads the solder between the separation spring plate and the welding electrode to be melted, so that the separation spring plate is separated from the welding electrode in a tripping way under the action of the elasticity of the separation spring plate, the elastic piece releases elastic potential energy, the isolating piece moves to a position between the separation spring plate and the welding electrode under the action of the elastic piece, the distance between the separation spring plate and the welding electrode can be increased by the isolating piece, the purposes of improving the electrical isolation effect and extinguishing the arc are achieved, the equipment is effectively protected, and the use safety 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 and unplugging direction, the top side of the housing 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 is displaced relative to the second indicating surface 34 along with the isolating piece 22 after the separation of the separation shrapnel 21 and the welding electrode so as to indicate the working state, the first indicating surface 24 or the second indicating surface 34 is observed in the indicating window 41 before and after the tripping respectively, the first indicating surface is overlapped on the surface of the second indicating surface when the tripping state is not performed, and the first indicating surface is removed to expose the second indicating surface when the tripping state is performed, or the second indicating surface is exposed when the tripping state is not performed, and the first indicating surface moves to the surface covering the second indicating surface after tripping, thereby displaying the first indicating surface, 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 surge protector, in this embodiment, the separation welding point is provided on the top side of the main body 3 in the plugging direction, so that the spacer 22 mainly includes a portion located above the top side of the main body 3 in the plugging direction for separating the separation spring 21 from the welding electrode, then the spacer 22 extends from the top side of the main body 3 in the plugging direction along the sidewall of the main body 3 to the bottom side of the main body 3 in the plugging direction to form a remote signaling slider 25, so that the spacer 22 and the remote signaling slider 25 are an integrated structure, the operation reliability and accuracy of the remote signaling slider 25 can be improved, the base a is provided with the remote signaling component 5 which is matched with the remote signaling slider 25 and is touched by the remote signaling slider 25, and when tripping occurs, the remote signaling slider 25 can accurately displace along with the spacer 22, the remote signaling slider 25 moves linearly in the direction perpendicular to the plugging direction, the position state of the remote signaling slider 25 changes, the touch state of the remote signaling slider 25 on the remote signaling assembly 5 changes, the remote signaling assembly 5 can be remote signaling of a normally open contact, remote signaling of a normally closed contact and the like, the working state of the surge protector is monitored in real time, the surge protector 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 elastic sheet 21 and a 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 occupied space is small, and the through-flow capacity is improved.

In this embodiment, the separation spring 21 is connected to the first electrode 31 through a riveting structure, and for the reason that the first electrode needs to bear lightning current, install a product, and the like, 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.

The bottom of the surge protection module b, namely, the bottom side of the main body part 3 along the plugging direction is provided with an anti-reverse-plugging positioning piece 33, the anti-reverse-plugging positioning piece 33 is of a protruding structure, the bottom of the U-shaped groove on the base a is provided with an anti-reverse-plugging positioning groove matched with the anti-reverse-plugging positioning piece 33, the anti-reverse-plugging positioning piece 33 can play a role in guiding and positioning, the surge protection module b can be ensured to be correctly plugged into the base a, and the surge protection module b can normally and stably play a role in protection.

Fig. 6 and 7 show another embodiment of the surge protection module, which also has a tripping mechanism on the main body 3, the tripping mechanism includes a separation spring 21, a spacer 22 and an elastic member 23, one pin of the gap component 1 and the separation spring 21 form a separation welding point by welding with solder, the surge protection module in this embodiment is also provided with a state indicating function, the spacer 22 is provided with a first indicating surface 24 and a state change indicating surface 26, the first indicating surface 24 and the state change indicating surface 26 are different in color, the first indicating surface 24 and the state change indicating surface 26 are provided in this order along the moving direction of the spacer 22, the first indicator face 24 is displayed in the non-tripped state from an indicator window 41 provided on the housing, after tripping occurs, the first indicator surface 24 and the state change indicator surface 26 move with the spacer 22 such that the state change indicator surface 26 is displayed from the indicator window 41.

As shown in fig. 8, in another embodiment of the surge protection module, the state indication function of the surge protection module can be further implemented by an indication circuit connected in parallel to the gap component 1, an indication lamp is arranged on the indication circuit, when the gap type surge protection device works normally, the tripping mechanism is in an electrically conducting state, the indication lamp is in an energized lighting state at the moment, which indicates that the surge protection device is normal, and when the tripping mechanism is disconnected, the indication circuit is powered off to make the indication lamp go off, thereby indicating that the surge protection device is abnormal.

In the embodiment shown in fig. 9, the surge protection module is provided with the remote signaling elastic sheet 27, the remote signaling elastic sheet 27 includes a first remote signaling elastic sheet and a second remote signaling elastic sheet, when the tripping mechanism is not tripped, the first remote signaling elastic sheet is pressed on the second remote signaling elastic sheet by the remote signaling slider 25 of the spacer 22, when the tripping mechanism is tripped, the remote signaling slider 25 moves away along with the spacer 22, so that the first remote signaling elastic sheet is released, the first remote signaling elastic sheet is separated from the second remote signaling elastic sheet under the action of its own elastic force, the working state of the surge protection device is reliably and accurately reflected, the first remote signaling elastic sheet and the second remote signaling elastic sheet of the remote signaling elastic sheet 27 penetrate through the pins from the surge protection module to be electrically connected with the corresponding parts on the base a, thereby realizing the remote signaling function, realizing the real-time monitoring of the working state of the surge protection device, and being capable of being found at the first time when the surge protection device fails, the timeliness of maintenance is improved.

As shown in fig. 10, the surge protection module b may also be a module without a trip mechanism and a remote signaling function, and is composed of a main body 3 and a gap component 1, two pins of the gap component 1 are respectively connected with a first electrode 31 and a second electrode 32 on the main body 3, and the trip mechanism is arranged on a base a, which also satisfies the electrical isolation by forming an open circuit through the trip mechanism when an excessive overload current passes through.

As shown in fig. 1, the base a is used for inserting a plurality of surge protection modules b side by side, the structure is simple, each surge protection module b is easy to manufacture, and multi-path protection can be provided; as shown in fig. 11, under the condition that the multi-path protection circuit is not changed, a plurality of surge protection modules b can be integrally combined together to form an integrated plug-in module, so that the plug-in operation is easier, and the efficiency is improved.

The surge protector of the embodiment has a multi-path protection function, specifically, the base a is provided with an N end, a PE end, three independent L ends (specifically including an L1 end, an L2 end, and an L3 end), and an M end, wherein the L1 end, the L2 end, and the L3 end can be three-phase a, B, and C ends, the N end is a zero line end, the PE end is a ground line end, the M end represents a middle 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, the PE end, and the M end;

as shown in fig. 12 and 13, a surge protection module b is respectively inserted and arranged between the end L1, the end L2, the end L3 and the end M, and the gap members 1 of the surge protection module b are graphite gap members; a surge protection module b is arranged between the N end and the M end in a plugging manner, and an M-PE surge protection module c is arranged between the M end and the PE end in a plugging manner;

the M-PE surge protection module c mainly comprises a gap type protection component c1, the gap type protection component c1 can be one type or a combination type of at least two types of a graphite gap component, a metal gap component and a gas discharge tube component, the gap type protection component c1 can be the same as or different from the gap component 1, the M-PE surge protection module c also comprises a tripping component connected with the gap type protection component c1 and a remote communication mechanism used for indicating the working state, the tripping component of the M-PE surge protection module c is approximately the same as that of the surge protection module b, the tripping component of the M-PE surge protection module c mainly comprises a tripping elastic sheet, the tripping elastic sheet is welded with one pin end of the gap type protection component c1 to form a tripping welding point, the tripping component of the M-PE surge protection module c can also be provided with an isolation component and an elastic component, the elastic component is in an energy storage state before pins of the tripping elastic sheet and the gap type protection component c1 are not disconnected, and the isolating component is pushed to move to a position between the tripping elastic sheet and the pins of the gap type protection component c1 after the tripping elastic sheet is separated from the pins of the gap type protection component c1 so as to increase the distance between the tripping elastic sheet and the pins of the gap type protection component c1 to achieve the purposes of electrical isolation and arc extinction, a remote signaling part can be arranged on the isolating component by a remote signaling mechanism of the gap type protection component c1, and a remote signaling component matched with the remote signaling part is arranged on the base a, so that the working state of the surge protector can be 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.

As shown in fig. 12 and 13, the surge protection module b inserted and pulled between the N end and the M-PE surge protection module c inserted and pulled between the M end and the PE end may be independent modules, that is, the surge protection module b inserted and pulled between the N end and the M-PE surge protection module c inserted and pulled between the M end and the PE end are respectively inserted and pulled, the M-PE surge protection module c is placed at an end portion of the base a on which the PE end is located, the base is provided with the M end electrically connected with the M-PE surge protection module c and provided as a bus bar, the M-PE surge protection module c has a short distance from the PE end, and the M-PE surge protection module c has a short connecting line with the PE end, so that a space required for wiring can be reduced, and a through-current capability can be ensured;

and the total number of the discharge gaps between the L end and the PE end or between the N end and the PE end is 4-16, the number of the discharge gaps of the M-PE surge protection module (c) is 1-8, and the number of the discharge gaps of the surge protection module (b) between the N end and the M end and/or between the L end and the M end is 3-8, so that the number of the discharge gaps can be flexibly adjusted to meet different requirements.

As shown in fig. 14 to 16, the surge protection module b inserted between the N terminal and the M terminal can be combined with the M-PE surge protection module c inserted between the M terminal and the PE terminal into an integral insertion module d, and as shown in fig. 15 and 16, the integral protection component d1 of the integral insertion module is composed of the gap component 1 of the surge protection module b and the gap type protection component c1 of the M-PE surge protection module c in series combination, specifically, the integral protection component d1 is composed of a graphite gap component for connecting between N-M and a graphite gap component for connecting between M-PE in series (the integral protection component d1 can also be composed of a graphite gap component for connecting between N-M and a gas discharge tube component for connecting between M-PE, as shown in fig. 17 and 18), the two ends of the series circuit of the integral protection component d1 are a first terminal and a second terminal, the first terminal is provided with a welding electrode for welding connection with the detachment shrapnel through low-temperature solder, the detachment shrapnel is electrically connected with a first electrode 31 arranged on the main body piece 3, the second terminal is connected with a second electrode 32 arranged on the bottom surface of the main body piece 3, the integral graphite gap component is also provided with a third terminal, the third terminal is a common end of the graphite gap component connected between N-M and the graphite gap component connected between M-PE, the third terminal is connected with a third electrode 36 arranged on the bottom surface of the main body piece 3, then the first electrode 31, the second electrode 32 and the third electrode 36 of the integral plug-in module are respectively connected with corresponding electric plug interfaces of the N end, the PE end and the M end on the base a, and finally the connection between L1-M, Multiple protection functions among L2-M, L3-M, N-M and PE-M.

Example two

As shown in fig. 19 and 20, the base a is provided with three independent L ends (specifically, an L1 end, an L2 end, an L3 end), an N end, a PE end, and an M end, and the base a is provided with electrical sockets corresponding to the L1 end, the L2 end, the L3 end, the N end, the PE end, and the M end, respectively;

a surge protection module b is respectively inserted and arranged among the end L1, the end L2, the end L3 and the end M, and a gap assembly 1 of the surge protection module b is a graphite gap assembly; an electric surge protection module b is arranged between an N end and an M end in a plugging mode, a gap component 1 of the electric surge protection module b is a graphite gap component, an M-PE surge protection module c fixedly arranged on a base a is arranged between the M end and the PE end, the M-PE surge protection module c is placed inside the base a and located at the end portion of one side of the PE end, the M-PE surge protection module c does not exceed the end face of the base a of the side of the PE end and does not occupy extra external space, the M-PE surge protection module c is electrically connected with the M surge end arranged in the base a, wiring is short, occupied space is saved, the stacking direction of a gap type protection component c1 of the M-PE protection module c is perpendicular to the plugging direction of the surge protection module b, the structure is compact, the layout is more reasonable, and the L1 end, the electric surge protection module c1 is arranged in the plugging mode, and, The surge protection modules between the L2 end, the L3 end and the M end and the surge protection modules between the N end and the M end can be designed into parts with the same appearance structure, so that the manufacturing cost is reduced, and the surge protection module c is composed of a graphite gap assembly or a gas discharge tube assembly.

In this embodiment, the M-PE surge protection module c only includes a gap type protection component c1, the gap type protection component c1 may be one type or a combination of at least two types of a graphite gap component, a metal gap component, and a gas discharge tube component, the gap type protection component c1 is directly fixed on the base a, one pin of the gap type protection component c1 is directly electrically connected with the M terminal, the other pin of the gap type protection component c1 is directly electrically connected with the PE terminal, the M terminal is formed by processing a metal sheet, a plurality of metal elastic clamping sheets are arranged on the M terminal at intervals to form an electrical plug interface, a plurality of independent metal elastic clamping sheets are fixed on a bus bar, or a plurality of metal elastic clamps arranged at intervals are directly and integrally formed by a metal sheet, the M terminal forms a bus bar structure, the metal elastic clamping sheets are integrally U-shaped, the both sides wall or the inside lateral bending of a lateral wall of U-shaped structure are in order to improve the centre gripping stability, and is concrete, 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, and the thickness of first electrode 31 and second electrode 32 of the recess department of surperficial thickness attenuate is 1.3mm, ensures the smooth and easy nature of plug, and the guarantee has big flow capacity simultaneously, reaches the balance between the plug is smooth and easy and big flow capacity.

EXAMPLE III

As shown in fig. 21 to 25, the base a is provided with three independent L ends (specifically, an L1 end, an L2 end, an L3 end), an N end, a PE end, and an M end, and the base a is provided with an electrical plug interface corresponding to the L1 end, the L2 end, the L3 end, the N end, the PE end, and the M end, respectively;

a surge protection module b is respectively inserted and arranged among the end L1, the end L2, the end L3 and the end M, and a 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 M end in a plugging manner, a gap component 1 of the surge protection module b is a graphite gap component, and an M-PE surge protection module c fixedly arranged on the base a is arranged between the M end and the PE end;

in this embodiment, the M-PE surge protection module c includes a bearing member for installing the gap-type protection component c1, a cavity for placing the gap-type protection component c1 is disposed on the bearing member, the M-PE surge protection module c is further provided with a trip component, the trip component includes a trip elastic sheet c2 electrically connected to the M end, a trip elastic sheet c2 and one pin of the gap-type protection component c1 are connected through solder to form a break away solder joint, the other pin of the gap-type protection component c1 is electrically connected to the PE end, the trip component further includes an isolation component c3 and an elastic component c4, the elastic component is in an energy storage state before the trip elastic sheet and the pin of the gap-type protection component c1 are not disconnected, and pushes the isolation component to move between the trip elastic sheet and the pin of the gap-type protection component c1 after the trip elastic sheet and the pin of the gap-type protection component c1 are separated to increase a gap between the trip elastic sheet and the pin of the gap-type protection component c1 The gap type protective member c1 may be one type of graphite gap member, metal gap member, gas discharge tube member, or a combination of at least two types.

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 variations can be made in the present invention without departing from the spirit or scope of the invention.

Claims (10)

1. A surge protector is characterized by comprising a base (a) and a surge protection module (b) inserted in the base (a), wherein an electric connection end used for being electrically connected with the outside is arranged on the base (a), the electric connection end comprises a PE end, an M end is also arranged on the base (a), an M-PE surge protection module (c) is electrically connected between the M end and the PE end, a surge protection module (b) is arranged between at least one of the other electric connection ends and the M end, and the M-PE surge protection module (c) is inserted and connected between the M end and the PE end on the base (a); or, the M-PE surge protection module (c) is fixedly arranged on the base (a).

2. A surge protector according to claim 1, wherein the electrical connection terminal of the base (a) further comprises N terminals and k independent L terminals, wherein k is equal to or greater than 1, k is an integer, and surge protection modules (b) are respectively inserted and pulled between the N terminals and the M terminals and between each L terminal and each M terminal.

3. A surge protector according to claim 2, wherein the surge protection module (b) comprises a gap assembly (1), the M-PE surge protection module (c) comprises a gap type protection assembly (c1), and the gap assembly (1), the gap type protection assembly (c1) comprise one type or a combination of at least two types of a graphite gap assembly, a metal gap assembly, a gas discharge tube assembly.

4. A surge protector according to claim 3, wherein the gap assembly (1) and the gap type protection assembly (c1) each comprise n discharge gaps connected in series between the first terminal and the second terminal, and n-1 trigger circuits, one end of each of the n-1 trigger circuits is connected to a common end between n-1 adjacent discharge gaps, and the other end of each trigger circuit is connected to the second terminal, wherein n is greater than or equal to 2, and n is an integer.

5. A surge protector according to claim 3, wherein the total number of the discharging gaps between the L terminal and the PE terminal or between the N terminal and the PE terminal is 4-16, the number of the discharging gaps of the M-PE surge protection module (c) is 1-8, and the number of the discharging gaps of the surge protection module (b) between the N terminal and the M terminal and/or between the L terminal and the M terminal is 3-8.

6. A surge protector according to any of claims 3-5, wherein the surge protection module (b) plugged between the N and M terminals is combined with the M-PE surge protection module (c) plugged between the M and PE terminals into a single unitary plug module (d).

7. A surge arrester as claimed in claim 6, wherein the unitary plug-in module (d) comprises a unitary protection assembly (d1) formed by a gap assembly (1) and a gap-type protection assembly (c1) connected in series, the common terminals of the gap assembly (1) and the gap-type protection assembly (c1) being adapted to be electrically connected to the M terminal on the base (a).

8. A surge protector according to claim 7, wherein the integral plug-in module (d) comprises a first electrode (31), a second electrode (32) and a third electrode (36) which are electrically connected with the N terminal, the PE terminal and the M terminal on the base a respectively, one end of the integral protection component (d1) is electrically connected with the first electrode (31) through a tripping component, the other end of the integral protection component (d1) is electrically connected with the second electrode (32), and the common terminal of the integral protection component (d1) is electrically connected with the third electrode (36).

9. A surge protector according to any of claims 3 to 5, wherein the M-PE surge protection module (c) is located inside the base (a) and on the side of the PE end, and the M-PE surge protection module (c) does not extend beyond the end face of the base (a) on the side of the PE end.

10. A surge protector according to any of claims 1 to 5, wherein the M-PE surge protection module (c) is provided with a trip unit connected to the gap type protection unit (c1), and a remote signaling unit for indicating the operation status.

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