Action signal series transmission device of surge protector and lightning protection branching cabinet

Abstract

The utility model relates to the field of lightning protection equipment, in particular to an actuating signal series transmission device of a surge protector and a lightning protection branching cabinet. The utility model provides an actuating signal series transmission device of surge protectors. The actuating signal series transmission device comprises a signal circuit and a plurality of surge protectors, each surge protector comprises a monitoring module, the monitoring module is connected with a thermal tripping assembly of the surge protector, the monitoring module can control opening and closing of the signal circuit at the surge protector, and the multiple surge protectors are arranged on the signal circuit in series.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lightning protection equipment, especially to a surge protection device action signal series transmission device and lightning protection distribution cabinet. BACKGROUND

[0002] The existing surge protection device has the function of signal transmission with the outside, and the corresponding circuit structure is arranged in the base or the module head of the surge protection device, which can convert the thermal trip action signal such as displacement and the lightning action signal such as temperature change into an electric signal, and convert it into a digital signal through a monitoring module to output, so as to realize the external monitoring of the state of the surge protection device.

[0003] In some cases, a large number of surge protection devices need to be arranged, such as in places where there are a large number of signal cables in the railway, and the signal cables often need to be distributed, specifically, each core of the signal cable is connected to the distribution terminal, the distribution terminal is distributed through the distribution terminal, and each distribution terminal corresponds to a surge protection device, one of the outlet ports of the distribution terminal is connected to the surge protection device through a cable, thereby realizing the lightning protection of the distribution cable of the distribution terminal, so a large number of surge protection devices are arranged in the lightning protection distribution cabinet, and when the state of the above surge protection device needs to be monitored, such as each surge protection device transmitting the state signal to the upper computer through an independent signal channel, a large number of cables need to be connected in the lightning protection distribution cabinet, which not only affects the layout of the cores of the railway signal cables and the cables after distribution in the lightning protection distribution cabinet, but also increases the wiring process. SUMMARY

[0004] On the one hand, the utility model provides a kind of action signal series transmission device of surge protection device, and the wiring of surge protection device state monitoring in the case of multiple surge protection devices can be simplified;

[0005] The action signal series transmission device of surge protection device provided by the utility model comprises a signal circuit and multiple surge protection devices;Each surge protection device comprises a monitoring module, the monitoring module is connected with the thermal trip component of the surge protection device, the monitoring module can control the opening and closing of the signal circuit at the surge protection device, and multiple surge protection devices are connected in series on the signal circuit.

[0006] Further, the monitoring module comprises a first switch part cooperating with the action rod of the thermal trip component.

[0007] Further, the first switch part comprises two metal sheets, and the two metal sheets are located on the signal circuit, and the action rod can be moved to separate the two metal sheets.

[0008] Further, the first switch piece comprises two metal sheets, the two metal sheets are located on the signal circuit, the action lever is provided with a conductive section and an insulating section along the moving direction, the conductive section is located between the two metal sheets and abuts against the two metal sheets, and the action lever can be moved to the insulating section located between the two metal sheets and abutting against the two metal sheets.

[0009] Further, the monitoring module further comprises a second switch piece matched with the lightning protection element of the lightning stroke component, the first switch piece and the second switch piece are connected in series on the signal circuit, the second switch piece comprises a first attraction piece and a second attraction piece, the first attraction piece is fixedly arranged relative to the grounding circuit piece of the grounding end of the lightning protection element, a supporting spring is arranged between the first attraction piece and the second attraction piece, the first attraction piece and the second attraction piece are arranged around the grounding circuit piece, a contact structure is arranged on the signal circuit, and the second attraction piece can be close to the first attraction piece and separated from the contact structure under the action of a magnetic field generated by the current flowing through the grounding circuit piece.

[0010] Further, the pipe body of the conductive structure sleeved on the action lever forms the conductive section.

[0011] Further, the signal circuit comprises a power supply and an indicating piece.

[0012] Further, the second attraction piece is matched with a ratchet component.

[0013] Further, the ratchet component comprises a wheel ring, a tooth claw and a rotating shaft, the wheel ring is fixedly arranged relative to the grounding circuit piece, an inner ring surface of the wheel ring is provided with an inner tooth, the second attraction piece has a rotating end and a free end, the rotating end of the second attraction piece is fixedly connected with the rotating shaft, and the tooth claw is located at one end of the rotating shaft and is engaged with the inner tooth.

[0014] In another aspect, the lightning protection distribution cabinet provided by the utility model comprises a cabinet body, a plurality of distribution terminals and a plurality of surge protectors corresponding to the distribution terminals are arranged in the cabinet body, and all the surge protectors are connected in series on the signal circuit in the action signal series transmission device of the surge protector. Beneficial effects

[0015] The scheme connects multiple surge protectors in series in a signal circuit, if all the surge protectors connected in the signal circuit are in normal state, the whole signal circuit is in conducting state due to the fact that the positions corresponding to each surge protector on the signal circuit are in closed state; when one of the surge protectors connected in the signal circuit is in abnormal state, i.e. thermal trip action occurs, the monitoring module makes the signal circuit in the position of the surge protector to be in open state, and the whole signal circuit is in open state, and the indicator light is extinguished when power is off.

[0016] Therefore, the scheme realizes the state monitoring of multiple surge protectors by using a set of signal circuit, the information of whether there is surge protector in abnormal state among all the surge protectors connected in the signal circuit can be obtained by monitoring the on-off state of the signal circuit, and further operation is performed according to the information. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is the overall circuit schematic diagram of the surge protector connected in series on the signal circuit provided by the present application embodiment one to three;

[0019] Figure 2 is the circuit schematic diagram of the surge protector provided by the present application embodiment one and three;

[0020] Figure 3 is the circuit schematic diagram of the surge protector provided by the present application embodiment two;

[0021] Figure 4 is the structure schematic diagram of the action rod of the thermal trip assembly in the surge protector cooperating with the first switch piece provided by the present application embodiment one;

[0022] Figure 5 is the structure schematic diagram of the second switch piece provided by the present application embodiment two.

[0023] FIG. 1 is a surge protector; 2 is a signal circuit; 3 is a power supply; 4 is an indicating piece; 5 is a thermal trip assembly; 6 is a first switch piece; 7 is a circuit structure; 8 is a lightning strike assembly; 9 is a second switch piece; 10 is an action rod; 11 is a metal sheet; 12 is a conductive section; 13 is an insulating section; 14 is a grounding circuit piece; 15 is a first attraction piece; 16 is a second attraction piece; 17 is a ratchet assembly. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application. Embodiment

[0025] An action signal series transmission device of a surge protector, comprising a signal circuit 2 and a plurality of surge protectors 1; each surge protector 1 comprises a monitoring module, the monitoring module is matched with a thermal trip assembly 5 of the surge protector 1, the monitoring module can control the opening and closing of the signal circuit 2 at the surge protector 1, and the plurality of surge protectors 1 are arranged in series on the signal circuit 2.

[0026] In order to avoid the need for more signal cables for the state monitoring signal transmission of a large number of surge protectors 1, the plurality of surge protectors 1 in the present scheme realize state monitoring through the circuit on-off of a set of signal circuits 2. Specifically, the monitoring module of each surge protector 1 is matched with the thermal trip assembly 5 of the surge protector 1, the surge protector 1 is connected to the signal circuit 2, so that the monitoring module can control the on-off of the signal circuit 2 at the position of the surge protector 1. When the surge protector 1 is in a normal state, i.e. no thermal trip action occurs, the monitoring module keeps the signal circuit 2 closed at the position of the surge protector 1. At this time, the signal circuit 2 supplied by the external power supply 3 is in a circuit on state, the indicating element 4 on the signal circuit 2 is powered on, and preferably, the indicating element 4 is an indicator light which keeps constant when powered on.

[0027] In the present scheme, the plurality of surge protectors 1 are connected in series to the signal circuit 2. If all the surge protectors 1 connected to the signal circuit 2 are in a normal state, the corresponding position of each surge protector 1 on the signal circuit 2 is in a closed state, and the entire signal circuit 2 is in an on state. When one of the surge protectors 1 connected to the signal circuit 2 is in an abnormal state, i.e. thermal trip action occurs, the monitoring module makes the signal circuit 2 at the position of the surge protector 1 turn to an off state, and the entire signal circuit 2 turns to an off state, and the indicator light is extinguished when powered off.

[0028] Therefore, the present scheme realizes the state monitoring of the plurality of surge protectors 1 by using a set of signal circuits 2. The on-off state of the signal circuit 2 can be monitored to obtain information about whether there is an abnormal state of the surge protector 1 among all the surge protectors 1 connected to the signal circuit 2, and further operation can be performed according to the information.

[0029] In an optional embodiment, the monitoring module comprises a first switch element 6 matched with the action rod 10 of the thermal trip assembly 5.

[0030] The surge protector 1 is provided with a circuit structure 7 corresponding to the signal circuit 2, and the first switch piece 6 is arranged on the circuit structure 7. The circuit structure 7 is provided with two ports on the shell of the surge protector 1, and the cable of the signal circuit 2 is connected to the two ports respectively, so that the first switch piece 6 is connected to the signal circuit 2. The action rod 10 of the thermal release assembly 5 directly controls the first switch piece 6. When the surge protector 1 does not send the thermal release action, the first switch piece 6 remains in the closed state. When the surge protector 1 generates the thermal release action, the first switch piece 6 is disconnected. The first switch piece 6 includes two metal sheets 11, and the two metal sheets 11 are arranged on the signal circuit 2. The action rod 10 can be moved to separate the two metal sheets 11. Specifically, the two metal sheets 11 are arranged on the circuit structure 7 corresponding to the signal circuit 2 in the surge protector 1. When the surge protector 1 does not generate the thermal release action, the action rod 10 does not extend into the two metal sheets 11. At this time, the two metal sheets 11 are in contact with each other, thereby realizing conduction. When the surge protector 1 generates the thermal release action, the action rod 10 moves to insert into the two metal sheets 11, and separates the two metal sheets 11, so as to realize the disconnection of the first switch piece 6.

[0031] Alternatively, the action piece is provided with a conductive section 12 and an insulating section 13 along the moving direction. When the surge protector 1 does not generate the thermal release action, the conductive section 12 of the action rod 10 is located between the two metal sheets 11, separates the two metal sheets 11, and makes the two metal sheets 11 communicate and conduct through the conductive section 12. When the surge protector 1 generates the thermal release action, the action rod 10 moves to withdraw the conductive section 12 from between the two metal sheets 11, and the insulating section 13 moves into between the two metal sheets 11. The two metal sheets 11 cannot conduct between each other, thereby realizing the disconnection of the first switch piece 6. Preferably, the metal pipe body of the conductive structure is sleeved on the action rod 10 of the insulating structure to form the conductive section 12. Embodiment

[0032] On the basis of the first embodiment, the monitoring module further includes a second switch piece 9 cooperating with the lightning protection element of the lightning strike assembly 8. The first switch piece 6 and the second switch piece 9 are connected in series on the signal circuit 2. The second switch piece 9 includes a first attraction piece 15 and a second attraction piece 16. The first attraction piece 15 is fixedly arranged relative to the grounding circuit piece 14 of the lightning protection element. A supporting spring is arranged between the first attraction piece 15 and the second attraction piece 16. The first attraction piece 15 and the second attraction piece 16 are arranged around the grounding circuit piece 14. A contact structure is arranged on the signal circuit 2. The second attraction piece 16 can be close to the first attraction piece 15 and be separated from the contact structure under the action of the magnetic field generated by the current flowing through the grounding circuit piece 14.

[0033] The first switch 6 and the second switch 9 are arranged in series on the circuit structure 7, the action lever 10 of the thermal release assembly 5 directly controls the first switch 6, and the lightning protection element of the lightning stroke assembly 8 also directly controls the second switch 9. When the surge protector 1 does not send the thermal release action and the lightning stroke action, the first switch 6 and the second switch 9 are kept in the closed state, at this time, the signal circuit 2 supplied by the external power supply 3 is in the circuit conduction state, the indicating element 4 on the signal circuit 2 is powered on, and preferably, the indicating element 4 is an indicating lamp which keeps constant when powered on. When the surge protector 1 has the thermal release action, the first switch 6 is opened, and when the surge protector 1 has the lightning stroke action, the second switch 9 is opened, at this time, the signal circuit 2 is disconnected, and the indicating element 4 on the signal circuit 2 is powered off.

[0034] The grounding circuit element 14 of the lightning protection element generates a magnetic field when the surge protector 1 passes through the lightning stroke current, so that the first attraction element 15 and the second attraction element 16 are located in the magnetic field area generated by the grounding circuit element 14. The magnetic field magnetizes the first attraction element 15 and the second attraction element 16, so that the magnetic attraction force is generated between them. The magnetic attraction force can make the second attraction element 16 move against the elastic force of the supporting spring. The second switch 9 also includes two contact structures which are arranged in series on the circuit structure 7 of the signal circuit 2 in the surge protector 1. When the surge protector 1 does not pass through the lightning stroke current, the second attraction element 16 is located between the two contact structures, and the two contact structures are connected and conductive. When the surge protector 1 passes through the lightning stroke current, the second attraction element 16 moves out of the two contact structures, so that the two contact structures cannot conduct electricity, thereby making the second switch 9 open.

[0035] In an alternative embodiment, the second attraction element 16 cooperates with the ratchet assembly 17. The ratchet assembly 17 includes a wheel, a pawl and a rotating shaft. The wheel is fixedly arranged relative to the grounding circuit element 14, and the inner ring surface of the wheel is provided with internal teeth. The second attraction element 16 has a rotating end and a free end, the rotating end of the second attraction element 16 is fixedly connected with the rotating shaft, and the pawl is located at one end of the rotating shaft and is engaged with the internal teeth.

[0036] The lightning stroke current is a transient large current. In order to make the second attraction element 16 still keep the state that the two contact structures cannot conduct electricity after the surge protector 1 passes through the lightning stroke current, the wheel and the pawl are arranged between the second attraction element 16 and the shell of the surge protector 1. The second attraction element 16 is located in the shell and is connected with the shell through the rotating shaft. The principle of one-way rotation of the ratchet formed by the cooperation of the wheel and the pawl is used to make the second attraction element 16 only rotate in the direction close to the first attraction element 15 under the action of the magnetic attraction force. After the surge protector 1 passes through the lightning stroke current, the ratchet limits the second attraction element 16 to reset under the action of the elastic force of the supporting spring, so that the second switch 9 always keeps the open state after being opened. Embodiment

[0037] A lightning protection distribution cabinet, comprising a cabinet body, a plurality of distribution terminals and a surge protector 1 corresponding to each distribution terminal are arranged in the cabinet body, and all the surge protectors 1 are connected in series on the signal circuit 2 in the action signal series transmission device of the surge protector of the above-mentioned embodiment one.

[0038] The cabinet body has three functional modules of lightning protection, distribution and signal circuit 2, wherein the distribution module comprises a plurality of distribution terminals, the cores of the railway signal cable are connected to the incoming line ports of the distribution terminals, and then a plurality of cables are branched out through the outgoing line ports, thereby realizing the distribution of the cable; the lightning protection module comprises a plurality of surge protectors 1, each distribution terminal corresponds to a surge protector 1, and the cable of one of the outgoing line ports of the distribution terminal is connected to the corresponding surge protector 1, thereby realizing the lightning protection of the cable branched out by the distribution terminal. Since the state of the surge protector 1 in the cabinet body needs to be monitored, in order to avoid the need for a large number of signal cables for transmitting the state monitoring signals of a large number of surge protectors 1, the surge protector 1 in the cabinet body in the present scheme is connected to the signal circuit 2, specifically, the signal circuit 2 is powered by an external power supply 3, the surge protector 1 is provided with the action signal transmission device as described in embodiment one, the surge protector 1 is provided with two ports, the cable of the signal circuit 2 is connected to one of the two ports and then connected to the other port, and the two ports are connected to each surge protector 1 in series, the monitoring module of the surge protector 1 cooperates with the thermal trip assembly 5 of the surge protector 1, with the connection of the cable of the signal circuit 2 to the surge protector 1, the monitoring module in the surge protector 1 is connected to the signal circuit 2, and the monitoring module can control the on-off of the signal circuit 2 at the position of the surge protector 1, when the surge protector 1 is in a normal state, i.e. no thermal trip action occurs, the monitoring module keeps the signal circuit 2 closed at the position of the surge protector 1, if all the surge protectors 1 connected to the signal circuit 2 are in a normal state, since the position corresponding to each surge protector 1 on the signal circuit 2 is in a closed state, the entire signal circuit 2 is in a conducting state, and the indicating part 4 on the signal circuit 2 is in a power-on state, when one of the surge protectors 1 connected to the signal circuit 2 is in an abnormal state, i.e. thermal trip action occurs, the monitoring module makes the signal circuit 2 at the position of the surge protector 1 turn to an open state, the entire signal circuit 2 turns to an open state, and the indicating part 4 is powered off.

[0039] It should be noted that any of the above embodiments are illustrative of the present application and not limiting of the present application, and alternative embodiments can be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word comprising does not exclude the presence of elements or steps not listed in the claim. The word a or an shall not exclude the presence of a plurality of elements, articles or steps, as used in the description and the claims, the word, for example, shall not be construed as limiting. The use of the term at least shall not exclude the presence of additional such elements, articles or steps, nor exclude the presence of only one such element, article or step. The use of the expression at least one of shall not exclude the presence of additional such elements, articles or steps, nor exclude the presence of only one such element, article or step. The use of the term comprising, also means including. The use of the term comprising, also means including. The use of the term comprising, also means including. The use of the terms first, second and the like does not imply any orders. These terms can be understood as names.

[0040] The above embodiments are only suitable for illustrating the present application, but not limiting the present application, and the ordinary skilled in the art can also make various changes and modifications without departing from the spirit and scope of the present application, therefore all equivalent technical solutions also belong to the scope of the present application, the patent protection scope of the present application should be limited by the claims.

Claims

1. A surge protector's action signal serial transmission device, characterized in that, The signal circuit (2) and a plurality of surge protectors (1) are included; each surge protector (1) includes a monitoring module, the monitoring module is connected with the thermal release component (5) of the surge protector (1), the monitoring module can control the opening and closing of the signal circuit (2) at the surge protector (1), and a plurality of the surge protectors (1) are arranged in series on the signal circuit (2).

2. The surge protector's action signal serial transmission device according to claim 1, wherein The monitoring module includes a first switch part (6) matched with the action lever (10) of the thermal release component (5).

3. The surge protector's action signal serial transmission device according to claim 2, wherein The first switch part (6) includes two metal sheets (11), the two metal sheets (11) are located on the signal circuit (2), and the action lever (10) can be moved to separate the two metal sheets (11).

4. The surge protector's action signal serial transmission device according to claim 2, wherein The first switch part (6) includes two metal sheets (11), the two metal sheets (11) are located on the signal circuit (2), the action lever (10) is provided with a conductive section (12) and an insulating section (13) in the moving direction, the conductive section (12) is located between and abuts against the two metal sheets (11), and the action lever (10) can be moved to the insulating section (13) located between and abutting against the two metal sheets (11).

5. The apparatus according to claim 2, wherein The monitoring module further includes a second switch part (9) matched with a lightning protection element of a lightning strike component (8), the first switch part (6) and the second switch part (9) are connected in series on the signal circuit (2), the second switch part (9) includes a first attraction part (15) and a second attraction part (16), the first attraction part (15) is fixedly arranged relative to a grounding circuit part (14) of a lightning protection element outgoing end, a supporting spring is arranged between the first attraction part (15) and the second attraction part (16), the first attraction part (15) and the second attraction part (16) are arranged around the grounding circuit part (14), a contact structure is arranged on the signal circuit (2), and the second attraction part (16) can be close to the first attraction part (15) and separated from the contact structure under the action of a magnetic field generated by current flowing through the grounding circuit part (14).

6. The surge protector's action signal serial transmission device according to claim 4, wherein A pipe body of the conductive structure is sleeved on the action lever (10) to form the conductive section (12).

7. The apparatus according to claim 1, wherein The signal circuit (2) includes a power supply (3) and an indicating part (4).

8. The surge protector's action signal serial transmission device according to claim 5, wherein The second attraction part (16) is matched with a ratchet component (17).

9. The surge protector's action signal serial transmission device according to claim 8, wherein, The ratchet component (17) includes a rim, a tooth claw and a rotating shaft, the rim is fixedly arranged relative to the grounding circuit part (14), an inner ring surface of the rim is provided with an inner tooth, the second attraction part (16) has a rotating end and a free end, the rotating end of the second attraction part (16) is fixedly connected with the rotating shaft, and the tooth claw is located at one end of the rotating shaft and is engaged with the inner tooth.

10. A lightning protection distribution cabinet comprising a cabinet body, characterized in that, The cabinet is provided with a plurality of distribution terminals and a surge protector (1) corresponding to each of the distribution terminals, and all the surge protectors (1) are connected in series on a signal circuit (2) in the action signal series transmission device of the surge protector according to any one of claims 1-9.

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