CN215870751U - Surge protector - Google Patents

Abstract

The utility model discloses a surge protector which comprises a main body and a multi-path protection circuit, wherein the multi-path protection circuit comprises a plurality of surge protection modules, a cavity for accommodating the surge protection modules is arranged on the main body, different surge protection modules are respectively arranged in different cavities, and the cavities are arranged side by side and are uniformly distributed on the main body. The surge protection device effectively improves the electrical insulation strength among the surge protection modules in a limited space, can meet the requirement of multi-path protection by using one surge protection device on a photovoltaic and wind power medium-high voltage system, ensures that the internal surge protection modules work independently and reliably, has compact structure, small occupied volume, high use reliability and good safety, and meets the application requirement of the medium-high voltage alternating current and direct current system.

Description

Surge protector

Technical Field

The utility model relates to the technical field of electric protection devices, in particular to a surge protection device.

Background

A surge protector is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines. When the peak current or voltage is suddenly generated in the electric loop or the communication line due to external interference, the surge protector can conduct and discharge the lightning current in a very short time, so that the damage of the surge to other equipment in the loop is avoided. Be applied to surge protector among the medium and high voltage alternating current-direct current system, because of the operating voltage is high, it is usually bulky in order to satisfy electrical insulation, and a direct current medium and high voltage surge protector can only protect all the way, consequently need apply a plurality of surge protector in order to realize the multichannel protection, current surge protector is unreasonable because of the structural layout, it is bulky to occupy, electrical insulation effect is relatively poor, use reliability, the security is lower, be difficult to satisfy photovoltaic and wind-powered electricity generation's practical application's demand.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved and the technical task provided by the utility model are to improve the prior art, provide a surge protector, and solve the problems of unreasonable structural layout, large occupied volume, low use reliability and low safety of the surge protector in the prior art.

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

the utility model provides a surge protector, includes main part and multichannel protection circuit, multichannel protection circuit contains a plurality of surge protection module, be provided with the cavity that is used for holding surge protection module in the main part, different surge protection module places respectively in different cavities, the cavity sets up side by side and evenly distributed in the main part. The surge protector provided by the utility model has the advantages that the cavities arranged on the main body are utilized to effectively separate the surge protection modules, the electrical isolation effect between the adjacent overvoltage protection modules can be effectively increased, the overvoltage protection modules can be ensured to work independently and reliably, the normal work of other overvoltage protection modules is not influenced even if one of the overvoltage protection modules breaks down, and the cavities for accommodating the surge protection modules are arranged side by side and uniformly distributed, so that the surge protection modules are arranged on the main body more orderly and reasonably, the assembly space is utilized to the maximum extent under the condition that the electrical insulation is ensured to meet the requirements, the integral volume is effectively reduced, the structural compactness is improved, the application requirements of a medium-high voltage alternating current and direct current system are met, and the surge protector is compact in structure, high in use reliability and good in safety.

Furthermore, the multi-path protection circuit is a Y-shaped protection circuit and comprises three protection circuits, a surge protection module is arranged on each protection circuit, multi-path protection can be reliably realized, the structure is simple and compact, and the occupied space is small.

Furthermore, two surge protection modules connected in parallel are arranged on the grounded protection circuit in the multi-path protection circuit, so that the multi-path protection is realized, and meanwhile, the ground through-current capacity of the surge protection modules is improved to meet the use performance of an application system.

Furthermore, a switch-type protection element is further arranged on the grounded protection circuit, the two surge protection modules are connected in parallel and then connected in series with the switch-type protection element, and the switch-type protection element is matched with the surge protection modules for use, so that the reliability of the surge protection device in long-term loading is improved.

Furthermore, surge protection module symmetric distribution improves compact structure nature in the main part, reduces and occupies the volume.

Further, set up the insulating passageway that the electric connecting wire that supplies multichannel protection circuit passes through between the adjacent cavity, insulating passageway increases insulating properties, effectively increase electric clearance and creepage distance between the adjacent surge protection module, make the more reliable independent work of surge protection module ability, avoid the mutual influence, improve the protection reliability, utilize insulating passageway to make the wiring regular more orderly, and compact structure is good, and insulating passageway occupation space is little, can avoid increasing surge protector's whole volume, satisfy the demand of miniaturized development.

Furthermore, the surge protection module comprises a voltage-limiting protection element and a tripping mechanism which are connected in series, and one pin of the voltage-limiting protection element is welded with a disengaging spring of the tripping mechanism to form a disengaging welding spot. Each surge protection module has a tripping function, and when the current is too large or the temperature is raised due to the fault of the voltage-limiting protection element so that the solder between the separation spring plate and the pin of the voltage-limiting protection element is molten, the separation spring plate is separated from the pin of the voltage-limiting protection element due to the elastic action of the separation spring plate, so that the open circuit state is achieved, the electrical isolation effect is achieved, the fault current is prevented from continuously passing through, and the further situations of combustion and the like of the surge protector are avoided.

Furthermore, the tripping mechanism also comprises an isolating piece and an elastic piece, wherein the elastic piece is in an energy storage state before the pin of the separation shrapnel and the voltage-limiting protection element are not disconnected, and the isolating piece is pushed to move to the position between the pin of the separation shrapnel and the voltage-limiting protection element for electrical isolation after the pin of the separation shrapnel and the voltage-limiting protection element are separated. When the current is too large or the voltage-limiting protection element is failed to cause the solder between the separating spring plate and the pin of the voltage-limiting protection element to melt, the isolating piece moves under the action of the elastic piece, so that the separating spring plate and the pin of the voltage-limiting protection element are effectively separated, the spacing distance is enlarged, the purposes of electrical isolation and arc extinction are achieved, the protection performance is improved, and the use safety is improved.

Furthermore, the surge protection module still includes the remote signaling subassembly, be provided with the remote signaling portion that is used for the remote signaling subassembly of touch-control on the barrier member, can carry out remote signaling monitoring to the state of the tripping device of every surge protection module, ensure that the operating condition of surge protector that can be timely masters improves maintenance efficiency.

Furthermore, all the remote signaling assemblies are connected in series through the PCB and then output in a combined way, and the state change can be monitored as long as a tripping mechanism of one surge protection module is tripped, so that the timely maintenance is ensured.

Compared with the prior art, the utility model has the advantages that:

the surge protection device effectively improves the electrical insulation strength among the surge protection modules in a limited space, can meet the requirement of multi-path protection by using one surge protection device on a photovoltaic and wind power medium-high voltage system, ensures that the internal surge protection modules work independently and reliably, has compact structure, small occupied volume, high use reliability and good safety, and meets the application requirement of the medium-high voltage alternating current and direct current system.

Drawings

Fig. 1 is an internal overall schematic view of a surge protector device of the present invention;

fig. 2 is a schematic view of the surge protector device of the present invention with a hidden surge protection module;

fig. 3 is a schematic diagram of a front side structure of a surge protection module;

fig. 4 is a schematic diagram of a rear side structure of a surge protection module;

fig. 5 is a schematic structural diagram of a remote signaling assembly arranged on a surge protection module;

fig. 6 is a schematic diagram of a multipath protection circuit of the surge protector device of the present invention.

In the figure:

the protection device comprises a main body 1, a surge protection module 2, a switch type protection element 3, a chamber 11, an L end 12, an N end 13, a PE end 14, an insulation channel 15, a voltage limiting type protection element 21, a tripping mechanism 22, a module base 23, a separation spring piece 221, an isolation piece 222, an elastic piece 223, a remote signaling part 224, a remote signaling assembly 24 and a PCB 25.

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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The surge protector disclosed by the embodiment of the utility model has the advantages of compact structure, small occupied volume, good electrical isolation effect among protection modules, capability of ensuring that the protection modules can work reliably and independently, high use safety and reliability, and capability of meeting the requirements of medium-high voltage alternating current and direct current systems.

As shown in fig. 1 to 6, a surge protector mainly includes a main body 1 and a multi-path protection circuit, the multi-path protection circuit includes a plurality of surge protection modules 2, a chamber 11 for accommodating the surge protection modules 2 is provided on the main body 1, different surge protection modules 2 are respectively placed in different chambers 11, the chambers 11 are arranged side by side and uniformly distributed on the main body 1, and a cover body is provided on the main body 1 to cover the surge protection modules 2 inside.

In this embodiment, the protection circuit is a Y-shaped protection circuit, which includes three branch protection circuits, each protection circuit is provided with a surge protection module 2, that is, three-way protection is achieved, specifically, the main body 1 is provided with a terminal, the terminal includes an L end 12, an N end 13 and a PE end 14, the three protection circuits of the protection circuit are respectively connected with one terminal, the protection circuits connected with the L end and the N end are respectively provided with only one surge protection module 2, the protection circuit connected with the PE end (grounded protection circuit) is provided with two surge protection modules 2 in parallel, further, the protection circuit connected with the PE end is provided with a switch-type protection element 3, and the two surge protection modules 2 are connected in parallel and then connected in series with the switch-type protection element 3, so that the protection circuit of this embodiment can achieve a connection between L and N, and a connection between L and N, The protection between the N-PEs and the L-PEs is comprehensive, safe and reliable.

In this embodiment, two bisymmetry distributions of surge protection module 2 are in main part 1, specifically speaking, surge protection module 2 distributes in the central line both sides of main part 1, two surge protection modules 2 on the central line left side, two surge protection modules 2 on the central line right side, and 2 mirror symmetry of surge protection module on the left and right sides, that is to say, chamber 11 is with the central line symmetric distribution of main part 1, two chambers 11 on the central line left side, two chambers 11 on the central line right side, make surge protector's overall structure more orderly compact, be favorable to reducing the volume, still have good electrical safety when satisfying the miniaturization, guarantee the reliability of protective properties.

Further, set up the insulating passageway 15 that supplies multichannel protection circuit's electric connecting wire to pass through between two cavities 11 on central line left side, that is to say, two cavities 11 further separate apart through insulating passageway 15, insulating passageway 15 specifically is slit form, effectively increases electric clearance and creepage distance between the adjacent surge protection module, compact structure simultaneously, occupy small for surge protection module can more reliable independent work, and is same, also be provided with the insulating passageway 15 that supplies multichannel protection circuit's electric connecting wire to pass through between two cavities 11 on central line right side, the electric connecting wire specifically adopts the copper bar etc. the current capacity is good, and structural stability is good, long service life, the stable protective properties of guarantee.

In this embodiment, the surge protection module 2 includes a voltage-limiting protection element 21 and a tripping mechanism 22 connected in series, and one pin of the voltage-limiting protection element 21 and a tripping elastic sheet 221 of the tripping mechanism 22 are welded to form a tripping welding point, that is, each surge protection module 2 has a tripping function, so that when an excessive current is encountered, a protection circuit where the surge protection module is located is disconnected, and an electrical isolation effect is achieved.

Specifically, the surge protection module 2 includes a module base 23, a cavity groove for accommodating the voltage-limiting protection element 21 is formed in the module base 23, the voltage-limiting protection element 21 may specifically adopt a piezoresistor and the like, the tripping mechanism 22 is arranged at the outer side of the cavity groove, a through hole is formed in one side wall surface of the cavity groove, a pin of the voltage-limiting protection element 21 and a tripping elastic sheet 221 located outside the cavity groove are welded at the through hole through a low-temperature solder to form a tripping welding point, the voltage-limiting protection element 21 and the tripping mechanism 22 are separated through the cavity groove, and the electrical isolation effect after tripping is improved;

the tripping mechanism 22 further comprises an isolating piece 222 and an elastic piece 223, the elastic piece 223 is in an energy storage state before the pin of the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 are not disconnected, and the isolating piece 222 is pushed to move to the position between the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 for electrical isolation after the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 are separated, specifically, the elastic piece 223 is a spring, one end of the spring is connected to the module base body, the other end of the spring is connected with the isolating piece 222, the isolating piece 222 is located between the separation spring sheet 221 and the module base body 23, when the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 are in a connection state, the isolating piece 222 abuts against a separation welding point of the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 under the action of the elastic piece 223, and after the separation spring sheet 221 and the pin of the voltage limiting type protection element 21 are tripped, the elastic member 223 pushes the isolating member 222 to move between the separating spring 221 and the pin of the voltage limiting protection element 21 to shield the through hole, so as to achieve the arc shielding effect, effectively isolate the separating spring 221 from the pin of the voltage limiting protection element 21, and improve the electrical isolation effect.

The surge protection module 2 further comprises a remote signaling component 24, the isolating piece 222 is provided with a remote signaling part 224 for touching the remote signaling component 24, before and after the separation of the spring sheet 221 and the pin of the voltage-limiting protection element 21 is tripped, the position of the isolating piece 222 changes, so that the working state of the surge protector can be indicated by using the isolating piece 222, when the isolating piece 222 displaces, the remote signaling part 224 can be used for triggering the remote signaling component 24, so that the signal of the working state of the surge protector can be sent out in time, and the maintenance is facilitated in time; all the remote signaling assemblies 24 are connected in series through the PCB 25 and then output in a combined manner, so that when a tripping mechanism of any surge protection module is tripped, the signal transmission of the corresponding remote signaling assembly 24 is changed, and due to the serial output, the signal output in the combined manner can also be changed, and the working condition of the whole surge protector can be timely monitored.

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 adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims (10)

1. The surge protection device is characterized by comprising a main body (1) and a multi-path protection circuit, wherein the multi-path protection circuit comprises a plurality of surge protection modules (2), a chamber (11) used for accommodating the surge protection modules (2) is arranged on the main body (1), different surge protection modules (2) are respectively placed in different chambers (11), and the chambers (11) are arranged side by side and are uniformly distributed on the main body (1).

2. A surge protector according to claim 1, wherein the multi-path protection circuit is a Y-shaped protection circuit comprising three protection lines, each protection line being provided with a surge protection module (2).

3. A surge protector device according to claim 2, characterized in that two surge protection modules (2) are arranged in parallel on the protection line grounded in the multi-path protection circuit.

4. A surge protector according to claim 3, characterized in that a switch-type protection element (3) is arranged on the grounded protection circuit, and two surge protection modules (2) are connected in parallel and then connected in series with the switch-type protection element (3).

5. A surge protector device according to claim 3, characterized in that the surge protection modules (2) are symmetrically distributed on the main body (1).

6. A surge arrester as claimed in claim 2, wherein an insulating channel (15) is provided between adjacent chambers (11) for passage of electrical connections of the multiple protection circuit.

7. A surge protector according to any claim 1 to 6, wherein the surge protection module (2) comprises a voltage limiting protection element (21) and a tripping mechanism (22) connected in series, and one pin of the voltage limiting protection element (21) is welded with a disengaging spring (221) of the tripping mechanism (22) to form a disengaging welding point.

8. A surge protector according to claim 7, wherein the trip mechanism (22) further comprises a spacer (222) and an elastic member (223), the elastic member (223) is in an energy storage state before the separation spring (221) and the pin of the voltage limiting type protection element (21) are disconnected, and the spacer (222) is pushed to move to separate from the separation spring (221) and the pin of the voltage limiting type protection element (21) for electrical isolation after the separation spring (221) and the pin of the voltage limiting type protection element (21).

9. A surge protector device according to claim 8, wherein the surge protection module (2) further comprises a remote signalling component (24), and the spacer (222) is provided with a remote signalling portion (224) for touching the remote signalling component (24).

10. A surge protector as claimed in claim 9, wherein all the remote signalling modules (24) are connected in series by a PCB board (25) and then combined to output.

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