Fault alarm device for power distribution cabinet

Abstract

The utility model discloses a power distribution cabinet fault alarm device, which relates to the technical field of power distribution cabinets and comprises a power distribution cabinet body, a control assembly, a control power supply and a power distribution power supply. In the technical scheme provided by the utility model, the control assembly is arranged, the first relay is used as a starting switch of a control power supply, the second relay is used as a stopping switch of a power distribution power supply, the power distribution power supply, the normally-open switch and the second relay form a start-protection-stop circuit, the normally-open contact of the first relay is closed when the normally-open switch is pressed, and the normally-open contact of the second relay is closed. The PLC is powered on, the temperature sensor and the smoke sensor are used for detection, when a corresponding fault is detected, information is transmitted to the PLC, the PLC controls the alarm to give an alarm and supplies power to the second relay at the same time, so that the normally-closed contact of the second relay is disconnected, the power distribution power supply is disconnected immediately, the alarm can be given, and the fault can be prevented. And the instantaneous discontinuous distribution power supply prevents damage and diffusion of electrical components.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power distribution cabinet technical field especially, relates to a power distribution cabinet fault alarm device. BACKGROUND

[0002] Power distribution cabinet divides power distribution cabinet and lighting power distribution cabinet, measurement cabinet, is the last stage equipment of distribution system, and power distribution cabinet is the collective name of motor control center, and power distribution cabinet uses in the occasion that load is relatively dispersed, and circuit is less, and motor control center is used in the occasion that load is concentrated, and circuit is more, they distribute the electric energy of a circuit of the power distribution equipment of a level to the nearby load, and this stage equipment should provide protection, monitoring and control to load.

[0003] At present, power distribution cabinet usually sets up power distribution cabinet fault alarm device when using, but most fault alarm devices can only provide warning effect to remind staff, cannot realize first time power-off operation, and power-off not in time can lead to power distribution cabinet electric element damage expansion, therefore needs improvement. UTILITY MODEL CONTENT

[0004] The utility model provides a power distribution cabinet fault alarm device to overcome the prior art's insufficient, to solve the prior art in power distribution cabinet usually sets up power distribution cabinet fault alarm device when using, but most fault alarm devices can only provide warning effect to remind staff, cannot realize first time power-off operation, and power-off not in time can lead to power distribution cabinet electric element damage expansion's problem.

[0005] Therefore, the utility model provides a power distribution cabinet fault alarm device, including power distribution cabinet body, control assembly, control power supply and distribution power supply, the power distribution cabinet body one side fixed mounting has always open switch;

[0006] The control assembly includes control box, PLC controller, temperature sensor, smoke sensor, alarm, second relay and first relay, the control box is fixedly installed in the inside of power distribution cabinet body, the PLC controller, temperature sensor, smoke sensor, second relay and first relay are all fixedly installed in the inside of control box, and the alarm is fixedly installed at the top of power distribution cabinet body.

[0007] Optionally, the PLC controller is electrically connected with the temperature sensor, the smoke sensor, the alarm and the second relay.

[0008] Optionally, the control power supply, the PLC controller and the always open contact of first relay are two by two series connection.

[0009] Optionally, the distribution power supply, always open switch and first relay power supply contact are two by two series connection.

[0010] Optionally, the second relay normally closed contact is connected in series with the power distribution source.

[0011] Optionally, the second relay power supply contact is connected with the PLC controller by a wire.

[0012] Optionally, the control box top and bottom are respectively fixedly provided with a first terminal post and a second terminal post, the first terminal post is connected with the first relay normally open contact by a wire, and the second terminal post is connected with the second relay normally closed contact by a wire.

[0013] From the above technical solutions, it can be seen that the utility model has the following advantages:

[0014] 1. The power distribution cabinet fault alarm device, by setting control assembly, specific, with the first relay as the starting switch of the control power supply, the second relay as the stop switch of the power distribution source, the power distribution source, the normally open switch and the second relay form the starting circuit, press the normally open switch circuit passage, at the same time, the first relay normally open contact is closed, the PLC controller is electrified, at this time, the temperature sensor and the smoke sensor are used for detection, when corresponding fault is detected, information is transmitted to the PLC controller, the PLC controller controls the alarm to issue an alarm, at the same time, the second relay is powered, so that the second relay normally closed contact is disconnected, the power distribution source is immediately disconnected, not only can issue an alarm, and the power distribution source is disconnected in an instant to prevent the damage of the electrical components from spreading.

[0015] 2. The power distribution cabinet fault alarm device, by setting the first terminal post and the second terminal post, the first terminal post and the second terminal post are connected with the power distribution source and the control power supply, which is convenient for the power distribution cabinet fault alarm device to be quickly connected with the power distribution cabinet, simple to connect, wide adaptation range, high universality and convenient to use.

[0016] The characteristics and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings:

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the front view of the control assembly of the utility model;

[0020] Figure 3 It is the local working principle diagram of the control assembly of the utility model;

[0021] Figure 4 It is the local circuit diagram of the utility model.

[0022] Explanation of reference numerals in the attached diagram: 1. Distribution cabinet; 2. Control components; 201. Control box; 202. PLC controller; 203. Temperature sensor; 204. Smoke sensor; 205. Control power supply; 206. Alarm; 207. Second relay; 208. First relay; 3. Power supply; 4. Normally open switch; 5. First terminal; 6. Second terminal. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] The following describes in detail, with reference to the accompanying drawings, a power distribution cabinet fault alarm device according to an embodiment of the present invention. Example

[0025] For easier understanding, please refer to Figures 1 to 4 An embodiment of a power distribution cabinet fault alarm device provided by this utility model includes a power distribution cabinet 1, a control component 2, a control power supply 205 and a power distribution power supply 3, and a normally open switch 4 is fixedly installed on one side of the power distribution cabinet 1;

[0026] Control component 2 includes control box 201, PLC controller 202, temperature sensor 203, smoke sensor 204, alarm 206, second relay 207, and first relay 208. Control box 201 is fixedly installed inside distribution cabinet 1. PLC controller 202, temperature sensor 203, smoke sensor 204, second relay 207, and first relay 208 are all fixedly installed inside control box 201. Alarm 206 is fixedly installed on top of distribution cabinet 1. PLC controller 202 is electrically connected to temperature sensor 203, smoke sensor 204, alarm 206, and second relay 207 by wires. The normally open contacts of control power supply 205, PLC controller 202, and first relay 208 are connected in series in pairs. Distribution power supply 3, normally open switch 4, and power supply contacts of first relay 208 are connected in series in pairs. The normally closed contact of second relay 207 is connected in series with distribution power supply 3. The power supply contact of second relay 207 is electrically connected to PLC controller 202 by wires.

[0027] It should be noted that by setting the first relay 208 as the start switch of the control component 2, and setting the second relay 207 as the normally closed switch for stopping in the start-stop circuit of the power distribution power supply 3, during use, when the normally open switch 4 is pressed, the circuit path formed by the power distribution power supply 3 is opened. At this time, the normally open contact of the first relay 208 closes, so that the control power supply 205 powers the PLC controller 202. At this time, the PLC controller 202 powers the smoke sensor 204 and the temperature sensor 203, and uses the temperature sensor 203 and the smoke sensor 204 to detect. When a corresponding fault is detected, the information is transmitted to the PLC controller 202, and the PLC controller 202 controls the alarm 206 to sound an alarm. At the same time, it powers the second relay 207, so that the normally closed contact of the second relay 207 opens, and the power distribution power supply 3 is immediately disconnected. This not only sounds an alarm, but also instantly disconnects the power distribution power supply 3 to prevent the spread of damage to electrical components. In addition to the temperature sensor 203 and the smoke sensor 204, a humidity sensor can also be added in specific use, but is not limited to adding a humidity sensor. Example

[0028] In some embodiments, such as Figure 2 As shown, the control box 201 has a first terminal 5 and a second terminal 6 fixedly installed on its top and bottom, respectively. The first terminal 5 is electrically connected to the normally open contact of the first relay 208 by a wire, and the second terminal 6 is electrically connected to the normally closed contact of the second relay 207 by a wire.

[0029] It should be noted that by setting the first terminal 5 and the second terminal 6, the power distribution power supply 3 and the control power supply 205 can be connected through the first terminal 5 and the second terminal 6, which facilitates the quick connection of the power distribution cabinet fault alarm device to the power distribution cabinet. The connection is simple, and the applicability is wide and the versatility is high.

[0030] In this utility model, the PLC controller 202, temperature sensor 203, smoke sensor 204, alarm 206, first relay 208, second relay 207 and normally open switch 4 are known components and will not be described in detail here.

[0031] Working principle: In use, firstly, the first relay 208 is connected to the control power supply 205 via the first terminal 5, and the second relay 207 is connected to the start-stop circuit of the power distribution power supply 3 via the second terminal 6 as a normally closed switch for stopping. At this time, when the normally open switch 4 is pressed, the circuit path formed by the power distribution power supply 3 is opened. At this time, the normally open contact of the first relay 208 closes, so that the control power supply 205 powers the PLC controller 202. At this time, the PLC controller 202 powers the smoke sensor 204 and the temperature sensor 203. The temperature sensor 203 and the smoke sensor 204 are used for detection. When a corresponding fault is detected, the information is transmitted to the PLC controller 202. The PLC controller 202 controls the alarm 206 to sound an alarm. At the same time, it powers the second relay 207, so that the normally closed contact of the second relay 207 opens, immediately disconnecting the power distribution power supply 3. This not only sounds an alarm, but also instantly disconnects the power distribution power supply 3 to prevent the spread of damage to electrical components.

[0032] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A power distribution cabinet fault alarm device, characterized in that: It includes a power distribution cabinet (1), a control component (2), a control power supply (205) and a power distribution power supply (3), and a normally open switch (4) is fixedly installed on one side of the power distribution cabinet (1); The control component (2) includes a control box (201), a PLC controller (202), a temperature sensor (203), a smoke sensor (204), an alarm (206), a second relay (207), and a first relay (208). The control box (201) is fixedly installed inside the power distribution cabinet (1). The PLC controller (202), temperature sensor (203), smoke sensor (204), second relay (207), and first relay (208) are all fixedly installed inside the control box (201). The alarm (206) is fixedly installed on the top of the power distribution cabinet (1).

2. The power distribution cabinet fault alarm device according to claim 1, characterized in that: The PLC controller (202) is electrically connected to the temperature sensor (203), smoke sensor (204), alarm (206), and second relay (207) by wires.

3. The power distribution cabinet fault alarm device according to claim 1, characterized in that: The normally open contacts of the control power supply (205), PLC controller (202) and first relay (208) are connected in series in pairs.

4. The power distribution cabinet fault alarm device according to claim 1, characterized in that: The power distribution power supply (3), normally open switch (4) and the power supply contact of the first relay (208) are connected in series.

5. A power distribution cabinet fault alarm device according to claim 1, characterized in that: The normally closed contact of the second relay (207) is connected in series with the power supply (3).

6. The power distribution cabinet fault alarm device according to claim 1, characterized in that: The power supply contact of the second relay (207) is electrically connected to the PLC controller (202) by wire.

7. A power distribution cabinet fault alarm device according to claim 1, characterized in that: The control box (201) has a first terminal block (5) and a second terminal block (6) fixedly installed on its top and bottom, respectively. The first terminal block (5) is electrically connected to the normally open contact of the first relay (208) by a wire, and the second terminal block (6) is electrically connected to the normally closed contact of the second relay (207) by a wire.

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