Action signal 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 action signal transmission device of a surge protector and a lightning protection branching cabinet. The utility model provides an action signal transmission device of surge protectors. The action signal transmission device comprises a signal circuit and a plurality of surge protectors, each surge protector comprises a monitoring module, the monitoring module can monitor a thermal tripping assembly and / or a lightning stroke assembly of the surge protector and control the on-off 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 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, 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 the 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 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 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 can monitor the thermal trip assembly and / or lightning assembly of the surge protection device, and control the on-off 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 is matched with the thermal trip assembly through a monitoring circuit.

[0007] Further, the monitoring circuit comprises a switch structure or a sensor device matched with the action rod of the thermal trip assembly.

[0008] Further, the monitoring module comprises a monitoring unit and a switch element located on the signal circuit, when the monitoring unit obtains the signal that the action lever generates the thermal trip action, the switch element is disconnected on the signal circuit.

[0009] Further, the monitoring module cooperates with the thermal trip assembly and the lightning strike assembly through a monitoring circuit.

[0010] Further, the monitoring circuit comprises a switch structure or a sensor element cooperating with the action lever of the thermal trip assembly.

[0011] Further, the monitoring circuit further comprises a temperature sensor cooperating with the lightning protection element of the lightning strike assembly.

[0012] Further, the monitoring module comprises a monitoring unit and a switch element located on the signal circuit, when the monitoring unit obtains at least one of the signals that the action lever generates the thermal trip action and the lightning protection element passes the lightning strike current, the switch element is disconnected on the signal circuit.

[0013] Further, the signal circuit comprises a power supply and an indicating element, the signal circuit is electrically connected with a power supply module of the surge protector, and the power supply module is used for supplying power to the monitoring unit, the switch element and the monitoring circuit.

[0014] In another aspect, the lightning protection distribution cabinet 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 and connected to the signal circuit in the action signal transmission device of the surge protector in any one of the above aspects. Beneficial effects

[0015] In the scheme, a plurality of surge protectors are connected in series in the signal circuit, if all the surge protectors connected in the signal circuit are in a normal state, since the positions corresponding to each surge protector on the signal circuit are in a closed state, the whole signal circuit is in a conducting state; when one of the surge protectors connected in the signal circuit is in an abnormal state, i.e. thermal trip action occurs, the monitoring module makes the signal circuit at the position of the surge protector to be disconnected, and the whole signal circuit is disconnected. Therefore, the scheme uses a set of signal circuit to realize the state monitoring of a plurality of surge protectors, the information whether there is an abnormal state surge protector in all the surge protectors connected in the signal circuit can be obtained by monitoring the on-off state of the signal circuit, and further operations such as maintenance or replacement of the module head of the surge protector can be performed according to the information. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions 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 described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 is the overall circuit schematic diagram of the surge protector provided by the present application embodiment one to embodiment three in series on the signal circuit;

[0018] Figure 2 is the circuit schematic diagram of the surge protector provided by the present application embodiment one and embodiment three;

[0019] Figure 3 is the schematic diagram of the action rod of the thermal trip assembly and the switch structure cooperation provided by the present application embodiment one to embodiment three;

[0020] Figure 4 is the circuit schematic diagram of the surge protector provided by the present application embodiment two;

[0021] Figure 5 is the schematic diagram of the lightning protection element of the lightning strike assembly and the temperature sensor cooperation provided by the present application embodiment two.

[0022] Fig. 1 is a surge protector; 2 is a signal circuit; 3 is a power supply; 4 is an indicating element; 5 is a thermal trip assembly; 6 is a monitoring unit; 7 is a switch element; 8 is a circuit structure; 9 is an action rod; 10 is a switch structure; 11 is a metal sheet; 12 is a lightning strike assembly; 13 is a lightning protection element; 14 is a temperature sensor. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. EMBODIMENT

[0024] An action signal 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 cooperates with a thermal trip assembly 5 of the surge protector 1, the monitoring module can control the on-off 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.

[0025] In order to avoid the need for more signal cables for the state monitoring signals of a large number of surge protectors 1, the plurality of surge protectors 1 in the present scheme are monitored by the on-off of the circuit of a set of signal circuits 2. Specifically, the monitoring module of each surge protector 1 cooperates with the thermal trip assembly 5 of the surge protector 1, and 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.

[0026] 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 positions of each surge protector 1 on the signal circuit 2 are in a closed state, and the entire signal circuit 2 is in a conductive 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 causes the signal circuit 2 to be opened at the position of the surge protector 1, and the entire signal circuit 2 is opened.

[0027] Therefore, the present scheme uses a set of signal circuits 2 to monitor the state of a plurality of surge protectors 1. By monitoring the on-off state of the signal circuit 2, 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 can be obtained, and further operations such as maintenance or replacement of the module head of the surge protector 1 can be performed according to the information.

[0028] In an optional embodiment, the monitoring module cooperates with the thermal trip assembly 5 through a monitoring circuit.

[0029] The monitoring circuit is a circuit structure 8 provided in the base or the module head of the surge protector 1. The circuit structure 8 can convert thermal trip action signals such as displacement into electrical signals, and after processing by the monitoring module, the signal circuit 2 is turned on or off at the position of the surge protector 1.

[0030] The monitoring circuit can refer to the existing circuit structure 8 in the base or the module head of the surge protector 1. Based on the function of the monitoring module in the conventional surge protector 1, the present scheme enables the monitoring module to control the switch 7 such as an electromagnetic release, thereby achieving the on-off control of the signal circuit 2.

[0031] In an optional embodiment, the monitoring circuit includes a switch structure 10 cooperating with the action rod 9 of the thermal trip assembly 5, and the monitoring module includes a monitoring unit 6 and a switch 7 on the signal circuit 2. When the monitoring unit 6 receives a signal that the action rod 9 has thermal trip action, the switch 7 is opened on the signal circuit 2.

[0032] The switch structure 10 includes two metal sheets 11, which are electrically connected to the monitoring unit 6 through corresponding circuits. When the thermal tripping assembly 5 of the surge protector 1 does not have a thermal tripping action, the action rod 9 is located between the two metal sheets 11, thereby separating the two metal sheets 11. When the surge protector 1 has a thermal tripping action, the action rod 9 moves away from between the two metal sheets 11, and the two metal sheets 11 return to the original state of contacting each other, thereby making the corresponding circuit conductive. The monitoring unit 6 obtains a signal of the thermal tripping action of the surge protector 1 through the electric signal of the conductive corresponding circuit.

[0033] The surge protector 1 is provided with a circuit structure 8 corresponding to the signal circuit 2, and the switch member 7 such as an electromagnetic tripping device is arranged on the circuit structure 8. The circuit structure 8 is provided with two ports on the shell of the surge protector 1, and the cables of the signal circuit 2 are connected to the two ports, thereby realizing that the switch member 7 is connected to the signal circuit 2. The switch member 7 is controlled by the monitoring unit 6. In a normal state, the switch member 7 remains normally closed and conductive. When the monitoring unit 6 obtains a signal of the thermal tripping action of the action rod 9, the monitoring unit 6 controls the switch member 7 to be disconnected.

[0034] Alternatively, the displacement sensor or the Hall sensor is located close to the action rod 9 of the thermal tripping assembly 5 and is electrically connected to the monitoring unit 6 through a corresponding circuit. When the surge protector 1 has a thermal tripping action, the action rod 9 moves, and the monitoring unit 6 obtains an electric signal of the thermal tripping action of the surge protector 1 through the displacement sensor or the Hall sensor.

[0035] In an optional embodiment, the signal circuit 2 includes the power supply 3 and the indicating member 4. The signal circuit 2 is electrically connected to a power supply module of the surge protector 1, and the power supply module is used to supply power to the monitoring module, the switch member 7 and the monitoring circuit.

[0036] The signal circuit 2 is powered by the external power supply 3. When all the surge protectors 1 connected to the signal circuit 2 are in a normal state, all the switch members 7 on the signal circuit 2 are in a closed state, so that the signal circuit 2 is in a powered state, and the indicating member 4 such as an indicating lamp on the signal circuit 2 remains in a normally on state. When any of the surge protectors 1 connected to the signal circuit 2 has a thermal tripping action or a lightning action, the switch member 7 of the surge protector 1 is disconnected, so that the signal circuit 2 is disconnected, and the indicating member 4 such as an indicating lamp on the signal circuit 2 is extinguished. The external can obtain the overall state of the surge protectors 1 connected to the signal circuit 2 through the state of the indicating member 4. Embodiment

[0037] On the basis of the first embodiment, the monitoring module cooperates with the thermal tripping assembly 5 and the lightning assembly 12 of the surge protector 1, and the monitoring module can control the on-off of the signal circuit 2 at the surge protector 1.

[0038] To monitor the lightning action of the surge protector 1 on the basis of the embodiment one, the monitoring module of each surge protector 1 cooperates with the thermal tripping assembly 5 and the lightning action assembly 12 of the surge protector 1, and when the surge protector 1 is in normal state, i.e. no thermal tripping action and lightning action occurs, the monitoring module keeps the closing of the signal circuit 2 at the position of the surge protector 1.

[0039] If all the surge protectors 1 connected to the signal circuit 2 are in normal state, the signal circuit 2 is in conducting state because the position corresponding to each surge protector 1 on the signal circuit 2 is in closing state. When one of the surge protectors 1 connected to the signal circuit 2 is in abnormal state, i.e. thermal tripping action or lightning action occurs, the monitoring module makes the signal circuit 2 in opening state at the position of the surge protector 1, and the whole signal circuit 2 is in opening state.

[0040] In an alternative embodiment, the monitoring module cooperates with the thermal tripping assembly 5 and the lightning action assembly 12 through a monitoring circuit.

[0041] The monitoring circuit can convert the thermal tripping action signal, such as displacement, and the lightning action signal, such as temperature change, into electric signal, and then the monitoring module processes the electric signal to control the opening and closing of the signal circuit 2 at the position of the surge protector 1.

[0042] In an alternative embodiment, the monitoring circuit further comprises a temperature sensor 14 cooperating with the lightning protection element 13 of the lightning action assembly 12. When the monitoring unit 6 receives at least one of the signal of the thermal tripping action of the action rod 9 and the signal of the lightning current passing through the lightning protection element 13, the switch 7 is opened on the signal circuit 2.

[0043] The temperature sensor 14 is located near the lightning protection element 13 and is electrically connected to the monitoring unit 6 through corresponding circuit. When the surge protector 1 passes through lightning current, the lightning protection element 13 generates heat, and the monitoring unit 6 receives the electric signal of the temperature rise of the lightning protection element 13 through the temperature sensor 14, and then judges that the surge protector 1 has lightning action. In normal condition, the switch 7 is kept in closing and conducting state. When the monitoring unit 6 receives the signal of the thermal tripping action of the action rod 9, the monitoring unit 6 controls the switch 7 to open. When the monitoring unit 6 receives the signal of the lightning current passing through the lightning protection element 13, the monitoring unit 6 also controls the switch 7 to open. Embodiment

[0044] A lightning protection distribution cabinet comprises a cabinet body, a plurality of distribution terminals and surge protectors 1 corresponding to the distribution terminals are arranged in the cabinet body, and all the surge protectors 1 are connected in series to the signal circuit 2 in the action signal transmission device of the surge protector of the embodiment one or the embodiment two.

[0045] The cabinet body has three function modules of lightning protection, line distribution and signal circuit 2. The line distribution module includes a plurality of line distribution terminals. The cores of the railway signal cable are connected to the incoming wire ports of the line distribution terminals, and then a plurality of cables are distributed from the outgoing wire ports to realize line distribution. The lightning protection module includes a plurality of surge protectors 1. Each line distribution terminal corresponds to one surge protector 1. The cable of one outgoing wire port of the line distribution terminal is connected to the corresponding surge protector 1 to realize lightning protection for the cables distributed by the line distribution terminal.

[0046] Since the surge protectors 1 in the cabinet body need to be monitored, a plurality of signal cables are needed to transmit the state monitoring signals of the surge protectors 1. In the present scheme, the surge protectors 1 in the cabinet body are 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 connected to the other port 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 surge protector 1 and the cable of the signal circuit 2, the monitoring module in the surge protector 1 is connected to the signal circuit 2. The monitoring module can control the on-off state 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, the corresponding positions of the signal circuit 2 are in a closed state, and the entire signal circuit 2 is in a conducting state. The indicator 4 of 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 open. The entire signal circuit 2 is in an open state, and the indicator 4 is in a power-off state.

[0047] 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.

[0048] The above embodiments are only suitable for illustrating the present application, but not limiting the present application. Those skilled in the art can 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, and the patent protection scope of the present application should be limited by the claims.

Claims

1. An operating signal transmission device for a surge protector, characterized by comprising: The surge protector (1) comprises a monitoring module capable of monitoring a thermal tripping assembly (5) and / or a lightning strike assembly (12) of the surge protector (1) and controlling the on-off of the signal circuit (2) at the surge protector (1).

2. The operating signal transmission device for a surge protector according to claim 1, wherein The monitoring module cooperates with the thermal tripping assembly (5) through a monitoring circuit.

3. The signal transmission apparatus for an operation signal of a surge protector according to claim 2, wherein The monitoring circuit comprises a switch structure (10) or a sensor device cooperating with an action lever (9) of the thermal tripping assembly (5).

4. The signal transmission apparatus of claim 3, wherein The monitoring module comprises a monitoring unit (6) and a switch device (7) located on the signal circuit (2), when the monitoring unit (6) receives a signal that the action lever (9) has thermal tripping action, the switch device (7) is disconnected on the signal circuit (2).

5. The signal transmission apparatus for an operation signal of a surge protector according to claim 1, wherein The monitoring module cooperates with the thermal tripping assembly (5) and the lightning strike assembly (12) through a monitoring circuit.

6. The signal transmission apparatus of claim 5, wherein The monitoring circuit comprises a switch structure (10) or a sensor device cooperating with an action lever (9) of the thermal tripping assembly (5).

7. The signal transmission apparatus of claim 6, wherein The monitoring circuit further comprises a temperature sensor (14) cooperating with a lightning protection element (13) of the lightning strike assembly (12).

8. The signal transmission apparatus of claim 7, wherein The monitoring module comprises a monitoring unit (6) and a switch device (7) located on the signal circuit (2), when the monitoring unit (6) receives at least one of the signals that the action lever (9) has thermal tripping action and the lightning protection element (13) passes lightning current, the switch device (7) is disconnected on the signal circuit (2).

9. The signal transmission apparatus of claim 8, wherein The signal circuit (2) comprises a power supply (3) and an indicating device (4), the signal circuit (2) is electrically connected with a power supply module of the surge protector (1), the power supply module is used for supplying power to the monitoring unit (6), the switch device (7) and the monitoring circuit.

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

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