Single-phase double-circuit power-off alarm

Abstract

The utility model relates to a single-phase double-circuit power-off alarm. An alarm module is assembled in a hollow main body and can emit light and give out sound to alarm through the hollow main body; the alarm module is provided with an audible and visual alarm circuit, a first monitoring circuit and a second monitoring circuit, the first monitoring circuit and the second monitoring circuit are arranged in parallel, the first self-control switch is embedded between the output end of the first monitoring circuit and the audible and visual alarm circuit, and the first self-control switch takes electricity from the output end of the second monitoring circuit to work; the second self-control switch is embedded between the output end of the second monitoring circuit and the audible and visual alarm circuit, and the second self-control switch takes electricity from the output end of the first monitoring circuit to work; the acousto-optic alarm circuit is controlled through the association of the first self-control switch and the second self-control switch, so that the acousto-optic alarm circuit emits light and gives out sound alarm, and the alarm function can be generated when any one path in the 220V single-phase double-path power supply system is powered off. And the product is modularized, is convenient to assemble and use, has detachability, and is good in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply circuit systems, especially to the warning monitoring for a low-voltage 220V power supply circuit. Background Art

[0002] In a low-voltage 220V single-phase dual-circuit power supply system, due to circuit faults or rust on switch contacts, etc., a line disconnection may occur, which may damage electrical equipment or cause personal safety accidents. Therefore, in order to obtain a protection effect, the current practice is to embed protection components in the circuit in advance, which increases the difficulty of circuit manufacturing, lacks flexibility, and has a narrow application range. Therefore, in a dual-circuit power supply system, it is very necessary to install an alarm device for monitoring whether a certain circuit in the dual-circuit power supply is normal. Summary of the Invention

[0003] The purpose of the utility model is to provide a single-phase dual-circuit power-off alarm device, which has a simple structure, is convenient to install and use, and can generate sound and light alarms when any one of the two circuits is disconnected in a low-voltage 220V single-phase dual-circuit power supply system.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A single-phase dual-circuit power-off alarm device, which has:

[0006] A hollow main body;

[0007] An alarm module, assembled in the hollow main body and capable of emitting light and making a sound for alarm through the hollow main body; the alarm module has a sound and light alarm circuit, and a first monitoring circuit and a second monitoring circuit arranged in parallel. The first monitoring circuit is provided with a first input interface, and the first input interface extends to the wiring terminal of the hollow main body; the second monitoring circuit is provided with a second input interface, and the second input interface also extends to the wiring terminal of the hollow main body;

[0008] A first automatic control switch, embedded between the output end of the first monitoring circuit and the sound and light alarm circuit, and the first automatic control switch gets power from the output end of the second monitoring circuit to work; when the second monitoring circuit is powered off, the first automatic control switch connects the output end of the first monitoring circuit with the sound and light alarm circuit, so that the sound and light alarm circuit emits light and makes a sound for alarm;

[0009] A second automatic control switch, embedded between the output end of the second monitoring circuit and the sound and light alarm circuit, and the second automatic control switch gets power from the output end of the first monitoring circuit to work; when the first monitoring circuit is powered off, the second automatic control switch connects the output end of the second monitoring circuit with the sound and light alarm circuit, so that the sound and light alarm circuit emits light and makes a sound for alarm.

[0010] Further, in the above solution, both the first automatic control switch and the second automatic control switch are relays, and are in a normally open state during power taking operation.

[0011] Further, in the above solution, the first input interface and the second input interface extend to the same wiring terminal of the hollow main body together, and both the first input interface and the second input interface are equipped with wiring terminals.

[0012] Further, in the above solution, a clamping interface is provided at the bottom of the hollow main body, and the clamping interface is adaptively clamped on the track of the electric box.

[0013] Further, in the above solution, a raised boss is provided at the top of the hollow main body, and a sound emitting port and a light emitting hole are provided on the boss. The sound emitting port is adapted to transmit the sound emitted by the speaker on the sound and light alarm circuit; the light emitting hole is adapted to expose the light emitting element of the sound and light alarm circuit embedded therein.

[0014] Further, in the above solution, a signal output part is also provided in the sound and light alarm circuit. The signal output part outputs different signals based on the on-off state of the sound and light alarm circuit for remote monitoring.

[0015] Further, in the above solution, the signal output part is a relay. When the relay is in a normal state, a normally closed signal is output; when the sound and light alarm circuit is in a powered-on state, the normally open contact of the relay closes, the normally closed contact opens and outputs a response signal.

[0016] Through the design of the alarm circuit, the present utility model respectively monitors different single-phase power supply circuits by the first monitoring circuit and the second monitoring circuit arranged in parallel, and controls the sound and light alarm circuit through the association of the first automatic control switch and the second automatic control switch, so that the sound and light alarm circuit emits light and sound for alarm, realizing that power failure of any one of the 220V single-phase dual-circuit power supply systems can generate an alarm function. Moreover, the product is modular, convenient for assembly and use, beneficial to the maintenance and inspection of workers, has replaceability, and has good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 is a schematic structural diagram of a preferred embodiment of the present utility model;

[0018] Attached Figure 2 is Figure 1 a schematic side structural diagram of the embodiment;

[0019] Attached Figure 3 is Figure 1 a schematic electrical principle diagram of the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further illustrate the concept, specific structure and technical effects generated by the utility model with reference to the drawings, so as to fully understand the purpose, features and effects of the present utility model.

[0021] It should be noted that in the description of the present utility model, terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] Refer to Figure 1 、 2 As shown in FIGS. 3, the present utility model relates to a single-phase dual-circuit power-off alarm, which can be movably connected to a corresponding power circuit, used to monitor the on-off status of the power circuit, and can give visual and audible alarms, having excellent monitoring and protection effects.

[0023] The present utility model has a hollow main body 1 and an alarm module. The hollow main body 1 is made of insulating material, and a card interface 11 is provided at the bottom of the hollow main body 1. The card interface 11 is adaptively clamped on the track of the electric box, which can greatly facilitate the installation and implementation and achieve standardization. The alarm module is assembled in the hollow main body 1 and can emit light and sound alarms through the hollow main body; the alarm module has an acoustic-optic alarm circuit 2 and a first monitoring circuit 3 and a second monitoring circuit 4 arranged in parallel. The first monitoring circuit 3 is provided with a first input interface 31, and the first input interface 31 extends to the wiring terminal of the hollow main body 1; the second monitoring circuit 4 is provided with a second input interface 41, and the second input interface 41 also extends to the wiring terminal of the hollow main body 1; by taking power connections through the first input interface 31 and the second input interface 41, the present utility model can be easily connected to a corresponding power circuit. And it also includes a first self-control switch 5 and a second self-control switch 6;

[0024] The first self-control switch 5 is embedded between the output end of the first monitoring circuit 3 and the acoustic-optic alarm circuit 2, and the first self-control switch 5 takes power from the output end of the second monitoring circuit 4 to work; when the second monitoring circuit 4 is powered off, that is, when a power-off fault occurs in the power circuit monitored by the second monitoring circuit 4, the first self-control switch 5 connects the output end of the first monitoring circuit 3 and the acoustic-optic alarm circuit 2, so that the acoustic-optic alarm circuit 2 emits light and sound alarms externally.

[0025] The second self-control switch 6 is embedded between the output end of the second monitoring circuit 4 and the acoustic-optic alarm circuit 2, and the second self-control switch 6 takes power from the output end of the first monitoring circuit 3 to work; when the first monitoring circuit 3 is powered off, that is, when a power-off fault occurs in the power circuit monitored by the first monitoring circuit 3, the second self-control switch 6 connects the output end of the second monitoring circuit 4 and the acoustic-optic alarm circuit 2, so that the acoustic-optic alarm circuit 2 emits light and sound alarms externally.

[0026] In this embodiment, the first monitoring circuit 3 and the second monitoring circuit 4 respectively monitor different power supply circuits to achieve single-phase dual-circuit power-off monitoring and alarming. When the two power supply circuits being monitored are powered normally, the power supply to the acoustic-optic alarming circuit 2 via the first self-control switch 5 and the second self-control switch 6 is in a disconnected state. However, when there is a fault in any one of the monitored power supplies, the first self-control switch 5 or the second self-control switch 6 of the monitored circuit disconnects. Subsequently, the acoustic-optic alarming circuit 2 is powered from the other power supply circuit, emitting an acoustic-optic alarm signal. The horn 21 and the light-emitting element 22 are assembled in parallel on the acoustic-optic alarming circuit 2. The light-emitting element 22 is preferably a light-emitting LED, which is small in size and long in lifespan. A raised boss 12 is provided at the top of the hollow main body 1, and a sound-emitting port 121 and a light-emitting hole 122 are provided on the boss. The sound-emitting port 121 is adapted to let out the sound emitted by the horn 21 on the acoustic-optic alarming circuit 2; the light-emitting hole 122 is adapted to expose the light-emitting element 22 of the acoustic-optic alarming circuit 2 by embedding. The structure is simple, convenient for assembly, and has good visual and auditory effects, enhancing the alarming efficacy.

[0027] In this embodiment, both the first self-control switch 5 and the second self-control switch 6 are relays, which are in a normally open state when taking power. The first self-control switch 5 and the second self-control switch 6 respectively connect the first monitoring circuit 3 and the second monitoring circuit 4 to the acoustic-optic alarming circuit 2 in a cross-power-taking manner. Thus, the acoustic-optic alarming circuit 2 can be turned on by means of power-off, thereby achieving luminous and sounding alarms. The structure is simple, with fewer components, facilitating integration into the hollow main body 1, convenient for installation and use, and having a low investment cost.

[0028] In this embodiment, the first input interface 31 and the second input interface 41 extend to the same wiring terminal of the hollow main body 1 together, and both the first input interface 31 and the second input interface 41 are equipped with wiring terminals, facilitating wiring connection and enabling the present utility model to be conveniently and quickly connected to the corresponding power supply circuit. Figure 3 As shown, after the first monitoring circuit 3 and the second monitoring circuit 4 respectively introduce power from different power supply circuits, they respectively conduct lightning protection through varistors, step down the voltage through resistor-capacitor voltage reduction, filter through filter capacitors, and regulate the voltage through 12V zener diodes, and then respectively control the first self-control switch 5 and the second self-control switch 6 to realize power supply switching to single power supply, so as to achieve a fault state when any one of the power supplies is disconnected, generating a lamp light and a sound to achieve the alarm for single-circuit disconnection.

[0029] In this embodiment, a signal output unit 23 is further provided in the acousto-optic alarm circuit 2. The signal output unit 23 outputs different signals based on the on / off state of the acousto-optic alarm circuit 2 for remote monitoring. Further, the signal output unit 23 is a relay. When the relay is in the normal state, a normally closed signal is output; when the acousto-optic alarm circuit 2 is powered on, the normally open contact of the relay closes, while the normally closed contact opens, and the switching of the electrical signal and the output of the response signal are realized to achieve remote monitoring and further improve the alarm effect. Figure 1 As shown, in this embodiment, a manual switch 13 and a signal dry contact 14 for remote monitoring are further provided on the hollow main body 1. The manual switch 13 is used to manually turn off the light and sound of the acousto-optic alarm circuit 2 for the next monitoring. The signal dry contact 14 is convenient for connecting a signal receiver to achieve remote monitoring.

[0030] Through the design of the alarm circuit of the present utility model, the first monitoring circuit and the second monitoring circuit arranged in parallel respectively monitor different single-phase power supply circuits, and the acousto-optic alarm circuit is controlled by the first automatic control switcher and the second automatic control switcher in association, so that the acousto-optic alarm circuit emits light and makes a sound for alarm. When any one of the 220V single-phase dual-circuit power supply systems is powered off, an alarm function can be generated. Moreover, the product is modular, convenient for assembly and use, conducive to the maintenance and inspection of the staff, has replaceability, and has good practicability.

[0031] Although the preferred specific embodiments of the present utility model have been described above in conjunction with the drawings, the present utility model should not be limited to the structure and operation that are exactly the same as the above description and drawings. For those skilled in the art of this technology, many equivalent improvements and changes can also be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present utility model. However, these improvements and changes should all belong to the scope protected by the present utility model.

Claims

1. A single-phase dual-circuit power failure alarm, characterized in that: have: Hollow body (1); An alarm module is assembled in a hollow body (1) and can emit light and sound alarms through the hollow body; the alarm module comprises an audible and visual alarm circuit (2) and a first monitoring circuit (3) and a second monitoring circuit (4) arranged in parallel, the first monitoring circuit (3) being provided with a first input interface (31), and the first input interface (31) extending to a wiring terminal of the hollow body (1); the second monitoring circuit (4) being provided with a second input interface (41), and the second input interface (41) also extending to a wiring terminal of the hollow body (1); The first automatic switch (5) is embedded between the output end of the first monitoring circuit (3) and the sound and light alarm circuit (2), and the first automatic switch (5) is powered by the output end of the second monitoring circuit (4) to operate; when the second monitoring circuit (4) is powered off, the first automatic switch (5) connects the output end of the first monitoring circuit (3) with the sound and light alarm circuit (2), so that the sound and light alarm circuit (2) emits light and sounds an alarm; The second automatic switch (6) is embedded between the output end of the second monitoring circuit (4) and the sound and light alarm circuit (2), and the second automatic switch (6) is powered by the output end of the first monitoring circuit (3) to operate; when the first monitoring circuit (3) is powered off, the second automatic switch (6) connects the output end of the second monitoring circuit (4) to the sound and light alarm circuit (2), so that the sound and light alarm circuit (2) emits light and sounds an alarm.

2. A single-phase dual-circuit power failure alarm according to claim 1, characterized in that: The first automatic switch (5) and the second automatic switch (6) are both relays and are in a normally open state when operating to draw power.

3. A single-phase dual-circuit power failure alarm according to claim 1, characterized in that: The first input interface (31) and the second input interface (41) extend together to the same wiring terminal of the hollow body (1), and both the first input interface (31) and the second input interface (41) are equipped with wiring terminals.

4. A single-phase dual-circuit power failure alarm according to claim 1, characterized in that: A card interface (11) is provided at the bottom of the hollow body (1), and the card interface (11) is adapted to be card-connected to the rail of the electrical box.

5. A single-phase dual-circuit power failure alarm according to claim 1, characterized in that: The top of the hollow body (1) is provided with a raised boss (12), and the boss is provided with a sound-emitting port (121) and a light-emitting hole (122); the sound-emitting port (121) is adapted to transmit the sound emitted by the speaker (21) on the sound and light alarm circuit (2); and the light-emitting hole (122) is adapted to expose the light-emitting element (22) of the sound and light alarm circuit (2).

6. A single-phase dual-circuit power failure alarm according to claim 1, characterized in that: The sound and light alarm circuit (2) is also provided with a signal output unit (23), and the signal output unit (23) outputs different signals based on the on and off states of the sound and light alarm circuit (2) for remote monitoring.

7. A single-phase dual-circuit power failure alarm according to claim 6, characterized in that: The signal output unit (23) is a relay, which outputs a normally closed signal when in a normal state; when the sound and light alarm circuit (2) is powered on, the normally open terminal of the relay is closed, the normally closed terminal is opened, and a response signal is output.

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