CN111585259A - a 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

a surge protector

technical field

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

Background technique

Surge protectors can be used to protect against surges caused by lightning effects and other reasons. The surge protector is set in the protected system. When a surge occurs on the line in the system, the surge protector acts to limit the transient overvoltage on the line and discharge the surge current to protect various electronic and electronic equipment in the system. Electrical Equipment.

When multi-channel surge protection is required, the current surge protector is too large. If it is difficult to realize the multi-channel protection circuit of L-N, L-PE and N-PE, the number of modules will be increased, and the number of modules from L to PE will be increased. The connection is too long and the residual voltage is high, which affects the surge protection performance, and the current capacity is difficult to increase due to product size restrictions.

SUMMARY OF THE INVENTION

The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology and provide a surge protector, which solves the problem of the unreasonable structure of the surge protector in the current technology, the poor multi-circuit protection performance, and the difficulty in The problem of meeting the requirements of large flow capacity.

For solving the above technical problems, the technical scheme of the present invention is:

A surge protector includes a base and a surge protection module plugged into the base, the base is provided with an electrical connection end for electrical connection with the outside, the electrical connection end includes a PE end, and the The base is also provided with an M terminal, an M-PE surge protection module is electrically connected between the M terminal and the PE terminal, and a surge protection module is arranged between at least one of the remaining electrical connection terminals and the M terminal. The M-PE surge protection module is pluggable and connected between the M terminal and the PE terminal on the base; or, the M-PE surge protection module is fixedly arranged on the base. The surge protector of the present invention can effectively increase the current carrying capacity by setting the M terminal and electrically connecting the M-PE surge protection module between the M terminal and the PE terminal, and can effectively improve the performance of multi-circuit protection. PE surge protection modules are used in different protection routes, reducing the number of components required by the surge protector as a whole, realizing multi-channel protection while reducing the number of modules, effectively improving the current flow capacity, compact and compact structure, small footprint, It meets the needs of miniaturization, has high safety in use, and adopts a plug-in structure, which is convenient and quick to maintain and replace, and has low cost.

Further, the electrical connection end of the base also includes an N end and k independent L ends, where k≥1, and k is an integer, between the N end and the M end and between each L end and the M end, respectively. The plug-in is equipped with a surge protection module, which realizes the protection between several L-M, one N-M, and one PE-M, with good flexibility and applicability, comprehensive protection and good stability.

Further, the surge protection module includes a gap component, the M-PE surge protection module includes a gap type protection component, and the gap component and the gap type protection component include a graphite gap component, a metal gap component, and a gas discharge component. One type of pipe assembly or a combination of at least two types with excellent flow capacity.

Further, the gap components and the gap-type protection components include n discharge gaps and n-1 trigger circuits sequentially connected in series between the first terminal and the second terminal, and each of the n-1 trigger circuits is One end of a trigger circuit is connected to the common terminal between n-1 adjacent discharge gaps in turn, and the other end of each trigger circuit is connected to the second terminal, where n≥2, n is an integer, with better surge protection capability.

Further, the total number of discharge gaps between the L terminal and the PE terminal or between the N terminal and the PE terminal is 4 to 16, the number of discharge gaps of the M-PE surge protection module is 1 to 8, and the N terminal The number of discharge gaps of the surge protection module between the M terminal and/or the L terminal and the M terminal is 3 to 8. The number of discharge gaps of the surge protection module between L-M and N-M is more than that of the M-PE surge protection module. When triggered at the same time, the starting voltage is better than that of the two, achieving better surge protection effect. When the number of discharge gaps of the surge protection module between L-M and N-M is the same as the number of discharge gaps of the M-PE surge protection module, a completely symmetrical structure can be achieved, the same protection effect can be achieved, and wiring errors can be prevented.

Further, the surge protection module plugged between the N terminal and the M terminal and the M-PE surge protection module plugged between the M terminal and the PE terminal are combined into an integral plug-in module, which has a compact structure and reduces the number of plug-ins. The number of pull operations is easier to use.

Further, the integral plug-in module includes an integral protection assembly composed of a gap assembly and a gap-type protection assembly in series. Small space, easy to make and realize.

Further, the integral plug-in module includes a first electrode, a second electrode, and a third electrode that are electrically connected to the N end, the PE end, and the M end on the base a, respectively, and one end of the integral protection assembly passes through the tripping assembly. It is electrically connected to the first electrode, the other end of the integral protection assembly is electrically connected to the second electrode, and the common end of the integral protection assembly is electrically connected to the third electrode. The structure is compact and occupies a small space. The unplugging module is integrally plugged and unplugged on the base, and the plugging and unplugging operation is simple.

Further, the M-PE surge protection module is placed inside the base and 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 at the side where the PE end is located. The connection between the M-PE surge protection module and the PE terminal is short, which can reduce the space required for wiring and ensure the flow capacity. The structure is compact and the space is small.

Further, 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 for indicating the working state. When the buckle component trips to form an open circuit, the extra large overload current can no longer flow through the gap type protection component, which can reliably achieve the electrical isolation effect, improve the protection safety, and use the remote signaling mechanism to monitor the working status of the surge protector in real time. When the surge protector fails, it can be found at the first time, which improves the timeliness of maintenance.

Compared with the prior art, the advantages of the present invention are:

The surge protector of the present invention can effectively increase the current carrying capacity, and can effectively improve the performance of multi-circuit protection. The M-PE surge protection module is used for different protection routes, which reduces the number of components required by the surge protector as a whole. , to achieve multi-channel protection while reducing the number of modules, effectively improving the flow capacity, the structure is simple and compact, the occupied volume is small, to meet the needs of miniaturization, the use of high safety, the use of plug-in structure, maintenance and replacement is convenient, fast, cost-effective Low;

It realizes the functions of separation, alarm, and remote signaling. Through reasonable arrangement, the flow capacity is improved, and the 4+1 multi-channel protection function is realized. The number of protection channels is large and the stability is good.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the surge protector;

Figure 2 is a schematic diagram of the external structure of the surge protection module;

Figure 3 is a schematic diagram of the internal structure of the surge protection module;

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

FIG. 5 is a schematic cross-sectional view of the cooperation between the surge protection module and the base;

6 is a schematic structural diagram of another embodiment of a surge protection module;

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

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

FIG. 9 is a schematic structural diagram of another embodiment of a surge protection module;

FIG. 10 is a schematic structural diagram of another embodiment of a surge protection module;

11 is a schematic diagram of the overall structure of another embodiment of the surge protector;

12 is a schematic diagram of the overall structure of another embodiment of the surge protector;

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

14 is a schematic diagram of the base structure of another embodiment of the surge protector;

FIG. 15 is a schematic structural diagram of an integral plug-in module matched with the base shown in FIG. 14;

FIG. 16 is a schematic diagram of the circuit structure of the overall plug-in module shown in FIG. 15;

17 is a schematic structural diagram of another implementation manner of an integral plug-in module;

FIG. 18 is a schematic diagram of the circuit structure of the integrated plug-in module and the base shown in FIG. 17;

19 is a schematic diagram of the base structure of another embodiment of the surge protector;

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

FIG. 21 is a schematic diagram of the base structure of another embodiment of the surge protector;

FIG. 22 is a schematic diagram of the base structure of FIG. 21 without the surge protection module;

FIG. 23 is a schematic structural diagram of the surge protection module in FIG. 21;

Fig. 24 is the rear side structure schematic diagram of Fig. 23;

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

26(a)-(g) are explanatory diagrams in the aforementioned schematic diagram of the circuit structure;

27 is a schematic diagram of a circuit structure of a gap assembly;

Figure 28 is another schematic diagram of the circuit structure of the gap assembly;

FIG. 29 is a schematic diagram of another circuit structure of the gap assembly.

Among them, base a, surge protection module b, surge protection module c, integral plug-in module d, gap assembly 1, tripping mechanism 2, main body 3, shell 4, trigger circuit board 11, welding pole 12, and detachment shrapnel 21, spacer 22, elastic member 23, first indicating surface 24, remote signaling slider 25, state change indicating surface 26, remote signaling elastic piece 27, first electrode 31, second electrode 32, anti-reverse insertion positioning member 33, The second indication surface 34, the guide protruding strip 35, the third electrode 36, the indication window 41, the remote signaling component 5, the remote signaling wiring port 6, the gap type protection component c1, the trip spring c2, the isolation component c3, the elastic component c4, Overall protection component d1;

Figure 26(a) represents status indication, Figure 26(b) represents remote signaling, Figure 26(c) represents tripping mechanism, Figure 26(d) represents plug-in structure, and Figure 26(e) represents graphite gap assembly or metal gap assembly, Figure 26(f) represents the gas discharge tube assembly, and Figure 26(g) represents the indicator circuit.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

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

Example 1

As shown in FIG. 1 to FIG. 5, a surge protector mainly includes a base a and a surge protection module b plugged into the base a. The base a has a U for accommodating the surge protection module b. The surge protection module b is generally in the shape of a cuboid. The surge protection module b is provided with a first electrode 31 and a second electrode 32 on the bottom side of the plug-in direction, and the base a is in its U-shape. The bottom side of the groove is provided with an electrical plug-in interface for the first electrode 31 and the second electrode 32 to be inserted into the electrical connection;

Specifically, the surge protection module b mainly includes a gap assembly 1, a tripping mechanism 2, a main body 3 and a housing 4. The gap assembly 1 and the tripping mechanism 2 are mounted on the main body 3, and the gap assembly 1 may be graphite. Types of gap components, gas discharge tube components, metal gap components, etc., or a combination of graphite gap components and gas discharge tube components, or a single gap component, the housing 4 covers the gap component 1, the tripping mechanism 2 and the main body piece 3;

As shown in Figures 27 to 29, the gap assembly 1 includes n discharge gaps and n-1 trigger circuits, where n≥2, n is an integer, F1 to Fn in the figure represent discharge gaps, and N1 to Nn-1 represent discharge gaps. Trigger circuit, n discharge gaps are connected in series between the first terminal and the second terminal in sequence, the first terminal and the second terminal lead out as the working pins of the gap component 1, and the adjacent discharge gaps are the common discharge gaps. terminal, there are a total of n-1 common terminals between adjacent discharge gaps, and one end of each trigger circuit of the n-1 trigger circuits is sequentially connected to the n-1 adjacent discharge gaps. The common terminal is connected, and then the other end of each trigger circuit is connected to the second terminal, thereby forming a multi-layer gap structure as a whole, in which the discharge gap can be a combination of spark gaps, double spark gaps, gas discharge tubes, and symmetrical gas discharge tubes. One, the trigger circuit is at least one of a capacitor, a resistor, a resistor capacitor, a varistor, a thermistor, a transient diode or a gas discharge tube, wherein the resistor capacitor is composed of a resistor and a capacitor in parallel, and the multi-layer gap The electrode material of the structure can be metal or graphite, and different surge protection modules b on the same base a can use gap components 1 with different numbers of discharge gaps. When a surge occurs in the circuit between the first terminal and the second terminal, the trigger circuits of N1 to Nn-1 trigger the action of the discharge gaps F1 to Fn respectively. Finally, after the discharge gaps F1 to Fn are all turned on and become low resistance, the formation of Overvoltage discharge circuit, so as to limit the surge between the first terminal and the second terminal of the line within the voltage range that the electronic device can withstand, and realize the connection between the first terminal and the second terminal. protection of equipment. When the surge protector is overloaded and presents a low resistance or even a short circuit to the outside, the protection device will act to cut off the connection between the surge protector and the protected line, and the power of the protected line will no longer be continuously applied to both ends of the surge protector. , so it will not affect the operation of the protected line.

In this embodiment, a pin of the gap component 1 is provided with a welding pole 12 (the lead of the gap component 1 can be directly used as a welding pole, or the pin of the gap component 1 can be connected with additional components to form a welding pole ), the other pin of the gap assembly 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 assembly 1 along the plugging direction, that is, the welding electrode is close to the surge protection The top side of the module b is in the plugging direction, and the stacking direction of the gap component 1 is along the plugging direction of the surge protection module b. The structure is more compact, which can effectively increase the number of stacking gap components, improve the current capacity, and can It is more beneficial to set up the tripping mechanism; the main body 3 is provided with a cavity for placing the gap assembly 1, and a partition layer is provided on the side where the welding electrode is located, and the isolation layer is provided with a through hole exposing the welding pole 12, with a through hole The isolation layer can improve the electrical isolation effect after tripping, improve the protection performance, and improve the safety and reliability. The isolation layer with through holes is arranged on the top side of the main body 3 along the insertion and extraction direction. The detachment elastic piece 21 located on the other side of the isolation layer, that is, the detachment elastic piece 21 is located above the top side of the main body 3, the detachment elastic piece 21 is welded with the welding pole at the through hole to form a detachment solder joint, and the detachment elastic piece 21 It extends from the top side of the main body 3 in the plugging direction to the bottom side of the main body 3 along the side wall of the main body 3 , and the release elastic piece 21 is electrically connected to the first electrode 31 provided on the main body 3 , When encountering a large overload current, the solder between the detachment shrapnel and the welding pole is melted due to high temperature, so that the detachment shrapnel is separated from the welding pole under the action of its own elastic force to form an open circuit, thereby achieving the effect of electrical isolation and effectively improving the protection performance , after the overall replacement of the surge protection module, it will play the role of surge protection again, easy to maintain and replace, and the cost is low.

In order to improve the electrical isolation effect, the tripping mechanism 2 further includes an isolation member 22 and an elastic member 23. The elastic member 23 is in a state of energy storage before the separation spring 21 and the welding pole are disconnected, and the elastic member 23 is in a state of energy storage before the separation spring 21 and the welding pole are disconnected. After separation, push the spacer 22 to move between the detachment spring piece 21 and the welding pole to increase the distance between the detachment spring piece and the welding pole to achieve the purpose of electrical isolation and arc extinguishing. Specifically, the elastic piece 23 is a spring. One end is connected to the spacer 22, and the other end is connected to the main body 3. In this embodiment, the spring is perpendicular to the insertion and removal direction of the surge protection module b. The spacer 22 is driven to move in a straight line perpendicular to the insertion and removal direction, and finally the spacer 22 is moved to the space between the detachment spring 21 and the welding pole and fully isolates the two, thereby improving the effect of electrical isolation. When encountering a large overload current, the generated heat causes the solder between the detachment shrapnel and the welding pole to melt, so that the detachment shrapnel is tripped and separated from the welding pole under the action of its own elastic force, and the elastic piece releases elastic potential energy, making the isolation Under the action of the elastic piece, the piece is moved between the detachment shrapnel and the welding pole, so that the spacer can increase the distance between the detachment shrapnel and the welding pole, so as to improve the electrical isolation effect and extinguish the arc, effectively protect the equipment and improve the safety of use. sex;

The isolator 22 is provided with a first indication surface 24, and the main body 3 is provided with a second indication surface 34. The first indication surface 24 and the second indication surface 34 are located on the side of the surge protection module b in the plugging direction. On the top side, an indication window 41 for displaying the first indication surface 24 and the second indication surface 34 is provided on the top side of the casing. After the spring sheet 21 is separated from the welding electrode, the first indication surface 24 is opposite to the spacer 22 The second indication surface 34 is displaced to indicate the working state. The indication window 41 observes the first indication surface 24 or the second indication surface 34 before and after the tripping, respectively. In the non-tripping state It can be that the first indicating surface overlaps the surface of the second indicating surface, and after the tripping occurs, the first indicating surface moves away to expose the second indicating surface, or the second indicating surface is exposed when the tripping state occurs. , and after the tripping occurs, the first indication surface moves to the surface covering the second indication surface to display the first indication surface, so that the working condition of the surge protector can be intuitively grasped, and whether the surge protector has tripped or not is accurately known. Buckle, improve the timeliness of maintenance.

In order to remotely monitor the working state of the surge protector in real time, a remote signaling function is set on the surge protector. The spacer 22 mainly includes a portion located above the top side of the main body 3 in the insertion and extraction direction for separating the release spring 21 and the welding pole. The remote signal slider 25 is formed by extending along the side wall of the main body 3 toward the bottom side of the main body 3 in the insertion and extraction direction, so that the spacer 22 and the remote signal slider 25 are integrally formed, which can improve the remote signal slider 25. Action reliability and accuracy. The base a is provided with a remote signaling component 5 that cooperates with the remote signaling slider 25 and is touched by it. When a trip occurs, the remote signaling slider 25 can accurately follow the isolation member 22. Displacement occurs together, the remote signaling slider 25 moves in a straight line perpendicular to the insertion and removal direction, the position state of the remote signaling slider 25 changes, and then the touch state of the remote signaling slider 25 to the remote signaling component 5 changes, and the remote signaling slider 25 changes. The signaling component 5 can be remote signaling of normally open contacts, remote signaling of normally closed contacts, etc., which finally realizes real-time monitoring of the working state of the surge protector, and can detect the failure of the surge protector at the first time, improving maintenance. the timeliness; the base a is provided with a remote signaling connection port 6 for the aggregated connection of the remote signaling slider 5, which reduces the number of remote signaling terminals, facilitates customer wiring, and realizes centralized remote signaling;

In addition, the part of the spacer 22 located on the side wall of the main body 3 is in the shape of a plate, which reduces the occupied space, improves the compactness of the structure, and is conducive to improving the flow capacity; in order to ensure that the spacer 22 moves stably and reliably under the action of the spring , between the spacer 22 and the main body 3 is also provided with a sliding guide mechanism, the sliding guide mechanism includes a guide protruding strip 35 provided on the side wall of the main body 3, the spacer 22 is located on the side of the main body 3 The part of the wall is provided with a chute which is matched with the guiding protruding strip 35, and the guiding protruding strip 35 is in a linear shape parallel to the spring, so as to ensure that the spacer 22 can be accurately moved to the distance between the detachment spring piece 21 and the welding pole when tripping occurs. To achieve the effect of improving electrical isolation.

In this embodiment, the trigger circuit board 11 of the gap assembly 1 is arranged in a direction perpendicular to the insertion and removal direction of the surge protection module b, that is, the trigger circuit board 11 is located on the side of the stacking direction of the gap assembly 1, The space occupied is small, which is conducive to improving the flow capacity, the situation of crushing the trigger circuit board 11 is not easy, and the use stability is good; flow capability.

In this embodiment, the detachment elastic sheet 21 and the first electrode 31 are connected by a riveting structure. Because the first electrode needs to withstand lightning current, product installation, etc., the metal sheet material used needs to have sufficient thickness, and the detachment The shrapnel needs sufficient elasticity. If the thickness is too large, the elasticity will be low, and it is difficult to realize the tripping and separation stably and effectively. Therefore, the thickness of the metal sheet required by the detachment shrapnel and the first electrode is different, and the thickness of the metal sheet that meets the performance requirements can be selected. , that is, to ensure the flow capacity of the first electrode 31 , and also to ensure that the detachment elastic piece 21 has good elasticity to perform tripping and achieve the purpose of electrical isolation, which is convenient to implement and low in cost.

At the bottom of the surge protection module b, that is, on the bottom side of the main body part 3 along the insertion and removal direction, an anti-reverse insertion positioning member 33 is provided, and the anti-reverse insertion positioning member 33 is a convex structure. The bottom of the U-shaped slot is provided with an anti-reverse insertion positioning slot matching the anti-reverse insertion positioning member 33, and the anti-reverse insertion positioning member 33 can play a guiding and positioning role to ensure that the surge protection module b can be correctly inserted to the end On seat a, ensure that the surge protection module b can play a protective role in a normal and stable manner.

6 and 7 show another embodiment of the surge protection module, which is also provided with a tripping mechanism on the main body 3 , and the tripping mechanism includes a release spring 21 , an isolation member 22 and an elastic member 23 , one of the gap components 1 The pins and the detachment springs 21 are soldered to form detachment solder joints. The surge protection module in this embodiment is also provided with a status indication function. The isolator 22 is provided with a first indication surface 24 and a state change indication surface 26. The indication surface 24 and the state change indication surface 26 are of different colors. The first indication surface 24 and the state change indication surface 26 are arranged in sequence along the moving direction of the spacer 22. The indication window 41 provided above shows that after the tripping occurs, the first indication surface 24 and the state change indication surface 26 move with the spacer 22 so that the state change indication surface 26 is displayed from the indication window 41 .

As shown in FIG. 8 , another embodiment of the surge protection module, the status indication function of the surge protection module can also be realized by an indication circuit connected in parallel with the gap component 1. The indication circuit is provided with an indicator light. When the surge protector is working normally, the tripping mechanism is in a state of electrical conduction, and the indicator light is on at this time, indicating that the surge protector is normal, and when the tripping mechanism is disconnected, the indicating circuit is powered off and the indicator The light goes out, indicating that the surge protector is abnormal.

In the embodiment shown in FIG. 9, the surge protection module is provided with a remote signaling shrapnel 27, and the remote signaling shrapnel 27 includes a remote signaling shrapnel 1 and a remote signaling shrapnel 2. When the tripping mechanism does not trip, the isolation member 22 The remote signaling slider 25 presses the remote signaling shrapnel 1 on the remote signaling shrapnel 2. When the tripping mechanism trips, the remote signaling slider 25 moves away with the isolation member 22, so that the remote signaling shrapnel is released once the remote signaling shrapnel is released. The letter shrapnel 1 is disconnected and separated from the remote letter shrapnel 2 under the action of its own elastic force, which can reliably and accurately reflect the working state of the surge protector. The pin is electrically connected to the corresponding component on the base a, so as to realize the remote signaling function, and realize the real-time monitoring of the working status of the surge protector. When the surge protector fails, it can be found at the first time, and the timeliness of maintenance can be improved. .

As shown in FIG. 10 , the surge protection module b can also be a module without a tripping mechanism and a remote signaling function. The first electrode 31 and the second electrode 32 on the component 3 are connected, and the tripping mechanism is arranged on the base a, which also satisfies the electrical isolation by forming an open circuit through the tripping mechanism in the event of an extra-large overload current passing through.

As shown in Figure 1, the base a is used for several surge protection modules b to be plugged side by side, the structure is simple, each surge protection module b is easy to manufacture, and can provide multiple protection; as shown in Figure 11, when not Under the condition of changing the circuit of multi-circuit protection, several surge protection modules b can be combined together to form an integrated plug-in module, which is easier to plug-in operation and improves the efficiency.

The surge protector of this embodiment has a multi-circuit protection function. Specifically, the base a is provided with an N terminal, a PE terminal, and three independent L terminals (specifically including the L1 terminal, the L2 terminal, and the L3 terminal), M terminal is also provided, L1 terminal, L2 terminal, L3 terminal can be used as A, B, C three-phase terminals of three-phase power, N terminal is used as neutral terminal, PE terminal is used as ground terminal, M terminal represents the middle terminal, base The electric plug interfaces corresponding to the L1 end, the L2 end, the L3 end, the N end, the PE end and the M end are set on a;

As shown in FIG. 12 and FIG. 13 , a surge protection module b is respectively inserted and removed between the L1 end, the L2 end, the L3 end and the M end, and the gap component 1 of the surge protection module b is a graphite gap component; A surge protection module b is inserted between the N end and the M end, and an M-PE surge protection module c is inserted between the M end and the PE end;

The M-PE surge protection module c mainly includes a gap-type protection component c1, and the gap-type protection component c1 can be one type of graphite gap component, metal gap component, and gas discharge tube component, or a combination of at least two types. The gap type protection component c1 can be the same or different type as the gap component 1. The M-PE surge protection module c can also include a tripping component connected with the gap type protection component c1 and a remote signaling mechanism for indicating the working status. The components of the tripping component of the PE surge protection module c are roughly similar to the tripping mechanism of the surge protection module b. The tripping components of the M-PE surge protection module c mainly include a tripping spring, a tripping spring and a gap type. A pin end of the protection component c1 is welded and connected to form a tripping solder joint. The tripping component of the M-PE surge protection module c can also be provided with an isolation component and an elastic component. Before the pin of the component c1 is disconnected, it is in a state of energy storage, and after the release spring is separated from the pin of the gap protection component c1, the isolation part is pushed to move between the release spring and the pin of the gap protection component c1 to Increase the distance between the tripping shrapnel and the pins of the gap protection component c1 to achieve the purpose of electrical isolation and arc extinguishing. The remote signaling mechanism of the gap protection component c1 can set the remote signaling part on the isolation component, and the base a There is a remote signaling component that cooperates with the remote signaling department, so that the working status of the surge protector can be monitored in real time, and the failure of the surge protector can be found at the first time, which improves the timeliness of maintenance.

As shown in Figure 12 and Figure 13, the surge protection module b inserted between the N terminal and the M terminal and the M-PE surge protection module c inserted between the M terminal and the PE terminal can be independent of each other Modules, that is, the surge protection module b inserted between the N terminal and the M terminal and the M-PE surge protection module c inserted between the M terminal and the PE terminal are respectively plugged and unplugged, the M-PE The surge protection module c is placed on the end of the base a where the PE end is located, and the base is provided with the M-end that is electrically connected to the M-PE surge protection module c and is set as a busbar, and the M-PE surge The distance between the surge protection module c and the PE terminal is short, and the connection between the M-PE surge protection module c and the PE terminal is short, which can reduce the space required for wiring, ensure the current capacity, and has a compact structure and small footprint;

In addition, the total number of discharge gaps between the L terminal and the PE terminal or between the N terminal and the PE terminal is 4 to 16, and the number of discharge gaps of the M-PE surge protection module (c) is 1 to 8. The number of discharge 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 to 8, and the number of discharge gaps can be flexibly adjusted to meet different requirements.

As shown in Figures 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 as a whole The plug-in module d, and as shown in Figure 15 and Figure 16, the overall protection component d1 of the integral plug-in module is connected in series by 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 Combination, specifically, the overall 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 overall protection component d1 can also be used for connecting. The graphite gap assembly between N-M is connected with the gas discharge tube assembly used to connect between M-PE, as shown in Figure 17 and Figure 18), the two ends of the series circuit of the integral protection assembly d1 are the first The terminal and the second terminal, the first terminal is provided with a welding pole for connecting with the detachment spring piece by low temperature solder welding, the detachment spring piece is electrically connected with the first electrode 31 arranged on the main body 3 , and the second terminal is arranged on the bottom surface of the main body 3 The second electrode 32 is connected to the second electrode 32, the integral graphite gap component also has a third terminal, the third terminal is the common end of the graphite gap component connected between N-M and the graphite gap component connected between M-PE, the third terminal is It is connected to the third electrode 36 provided on the bottom surface of the main body 3, and then the first electrode 31, the second electrode 32, and the third electrode 36 of the integral plug-in module are respectively connected to the corresponding electrical terminals of the N, PE, and M terminals on the base a. The plug-in interface connection can finally realize the multi-channel protection function between L1-M, L2-M, L3-M, N-M, and PE-M.

Embodiment 2

As shown in Figure 19 and Figure 20, the base a is provided with three independent L ends (specifically including the L1 end, the L2 end, the L3 end), the N end and the PE end, and an M end is also provided on the base a. Set up electrical plug interfaces corresponding to L1, L2, L3, N, PE, and M respectively;

A surge protection module b is respectively inserted and removed between the L1 end, the L2 end, the L3 end and the M end, and the gap component 1 of the surge protection module b is a graphite gap component; A surge protection module b is provided, the gap component 1 of the surge protection module b is a graphite gap component, and an M-PE surge protection module c fixed on the base a is set between the M end and the PE end , the M-PE surge protection module c is placed inside the base a and is located at the end of the side where the PE end is located, the M-PE surge protection module c does not exceed the end face of the base a on the side where the PE end is located, and does not occupy additional The external space of the M-PE surge protection module c is electrically connected with the M terminal arranged in the base a, the wiring is short, and the space is saved, the stacking of the gap type protection component c1 of the M-PE surge protection module c The direction is perpendicular to the plug-in direction of the surge protection module b, and the structure is compact, which can make the layout more reasonable. The surge protection module c can be designed as components with the same shape and structure to reduce the manufacturing cost. The surge protection module c is composed of graphite gap components or gas discharge tube components.

In this embodiment, the M-PE surge protection module c only includes a gap-type protection component c1, and the gap-type protection component c1 may be one type or at least two of a graphite gap component, a metal gap component, and a gas discharge tube component. The type of combination, 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 to the M terminal, and the other pin of the gap type protection component c1 is directly electrically connected to the PE terminal, M The end is made of metal sheet, and the M end is provided with several metal elastic clips at intervals to form an electric plug interface. It can be a number of independent metal elastic clips fixed on a busbar, or can be directly integrally formed by a metal sheet. A number of metal elastic clips are arranged at intervals, and the M end constitutes a busbar structure. The metal elastic clips have a U-shaped structure as a whole, and the two side walls or one side wall of the U-shaped structure are bent inward to improve the clamping stability. , Specifically, the narrowest part of the opening width of the metal elastic clip is 1.1mm, and the thickness of the first electrode 31 and the second electrode 32 is 1.5mm. The thickness of the electrode 32 is 1.3mm, which ensures the smoothness of insertion and extraction, and at the same time ensures the large current capacity, and achieves a balance between the smooth insertion and removal and the large current capacity.

Embodiment 3

As shown in Fig. 21 to Fig. 25 , the base a is provided with three independent L ends (specifically including the L1 end, L2 end, L3 end), N end and PE end, and an M end is also arranged on the base a. Set up electrical plug interfaces corresponding to L1, L2, L3, N, PE, and M respectively;

A surge protection module b is respectively inserted and removed between the L1 end, the L2 end, the L3 end and the M end, and the gap component 1 of the surge protection module b is a graphite gap component; A surge protection module b is provided, the gap component 1 of the surge protection module b is a graphite gap component, and an M-PE surge protection module c fixed on the base a is set 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 assembly c1, and the bearing member is provided with a cavity for placing the gap type protection assembly c1, the M-PE surge protection module c is also provided with a tripping component, the tripping component includes a tripping spring c2 electrically connected to the M terminal, and a pin of the tripping spring c2 and the gap protection component c1 is connected by solder to form a release solder joint, and the gap protection component The other pin of c1 is electrically connected to the PE terminal, and the tripping assembly further includes an isolation part c3 and an elastic part c4, and the elastic part is in energy storage before the tripping shrapnel and the pin of the gap-type protection assembly c1 are disconnected. state, and after the trip spring is separated from the pins of the gap type protection component c1, the isolation member is pushed to move between the trip spring plate and the pins of the gap type protection component c1 to increase the distance between the trip spring plate and the gap type protection component c1. For the spacing between the pins, the gap-type protection component c1 may be one type of graphite gap component, metal gap component, and gas discharge tube component, or a combination of at least two types.

The above are only the preferred embodiments of the present invention, and it should be noted that the above preferred embodiments should not be regarded as limitations of the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present 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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