CN114710933A - Electric cabinet heat dissipation device and automatic alarm method - Google Patents

Abstract

The application provides an electric cabinet heat abstractor includes: fan unit and switch, fan unit includes fan, shell subassembly, fan casing and fan installation board subassembly and module installation backplate subassembly, and through at box body internally mounted fan, switch, terminal and PCB board, this electrical cabinet heat abstractor mountable is inside miniaturized rack, and it is stable fixed to satisfy fan unit under operating mode conditions such as earthquake, impact and vibration. Furthermore, the application also discloses an automatic alarm method, when the fan unit is abnormal, the two output fault signals can generate driving signals for driving the LED indicating unit and the contact alarm unit through the logic processing of the processing logic, so that the automatic alarm under the failure condition of the fan is realized.

Description

An electrical cabinet cooling device and automatic alarm method

technical field

The present application relates to the technical field of digital special instrument control for nuclear power plants, and in particular, to an electrical cabinet cooling device and an automatic alarm method.

Background technique

There are devices with high heat flux density in the electrical cabinet. These devices generate a lot of heat during operation. The heat generated during operation will affect the stable operation of the equipment and damage the equipment. Therefore, the temperature of the electronic equipment inside the electrical cabinet needs to be controlled at a reliable level. Within the range, it is necessary to meet the reliability under the conditions of earthquake, shock and vibration to meet the environmental requirements. At the same time, some of the electrical cabinets in the digital special instrument and control system of nuclear power plants are miniaturized cabinets, with small size and high internal integration, which leads to a large amount of heat dissipation in the cabinets. Therefore, the heat dissipation device is an indispensable device inside the miniaturized cabinet. , The cooling device dissipates heat to the equipment inside the cabinet to ensure that the equipment inside the cabinet can work normally.

At present, fan units on the market occupy a large amount of space and cannot meet the configuration requirements of miniaturized cabinets; in addition, in the state of fan failure, timely alarm cannot be made, which may easily lead to equipment damage.

SUMMARY OF THE INVENTION

In view of the above-mentioned problems, the present application provides an electrical cabinet cooling device and an automatic alarm method, which are used for stable fixation under conditions such as earthquake, shock and vibration, and can be installed inside a small cabinet for reliable control temperature.

In order to achieve the above purpose, the application provides the following technical solutions:

A cooling device for an electrical cabinet, comprising: a fan unit and a switch, wherein the fan unit includes a fan, a housing assembly, a fan cover, a fan mounting plate assembly and a module mounting backplane assembly, wherein:

The casing assembly includes: a fan casing, an air inlet plate, a backplane mounting plate and screws, and the fan unit is installed in the electrical cabinet by the screws through the backplane mounting plate; the side surface of the casing assembly has holes. , for installing the switch;

The fan cover and the fan mounting plate assembly include: the fan cover and the fan mounting plate, the wiring terminal, the fan cover, the PCB board, the nuts and the screws, and the fan cover and the fan mounting plate are used for the assembly carrier of the circuit board and the fan ; The fan cover and the fan are mounted on the fan cover and the fan mounting plate by the screws and nuts, and the PCB board is fixed on the fan cover and the fan mounting plate by the screws and the rivet nuts; the wiring The terminals are fixed on the fan cover and the fan mounting plate by screws;

The module installation backplane assembly includes: a module installation backplane, M5 screws and M3 screws.

Further, the fan housing is formed by a sheet metal part, and its material is SPCC.

Further, the material of the fan cover and the fan mounting plate is SPCC.

Further, the outer surface of the fan cover and the fan mounting plate is spray-coated by color galvanizing.

Further, the material of the module installation backplane is SPCC, which is formed by bending sheet metal, and is fixed inside the electrical cabinet with screws.

An automatic alarm method, comprising:

Monitoring the fan unit in real time, when monitoring the failure of the fan unit, outputting a fault signal of the fan unit, where the fault signal includes a first fault signal and a second fault signal;

The first fault signal and the second fault signal are logically processed by preset processing logic to generate a drive signal, and the drive signal is used to drive the LED indicating unit and/or the contact alarm unit;

The LED indicating unit and/or the contact alarm unit are driven according to the driving signal, so as to realize automatic alarm in the state of fan failure.

The heat dissipation device for an electrical cabinet described in the present application includes: a fan unit and a switch. The fan unit includes a fan, a housing assembly, a fan cover, a fan mounting plate assembly and a module mounting backplane assembly. By installing the fan and switch inside the box body , terminal and PCB board, the electrical cabinet cooling device can be installed inside the miniaturized cabinet, to meet the stability and fixation of the fan unit under the conditions of earthquake, shock and vibration.

Further, the present application also discloses an automatic alarm method, which monitors a fan unit in real time, and outputs a fault signal of the fan unit when monitoring the fan unit for failure, and the fault signal includes a first fault signal and a second fault signal. fault signal; logically process the first fault signal and the second fault signal through preset processing logic to generate a driving signal, the driving signal is used to drive the LED indicating unit and/or the contact alarm unit; The drive signal drives the LED indicating unit and/or the contact alarm unit, so as to realize automatic alarm in the state of fan failure. Through the present application, when the fan unit is abnormal, the two fault signals output by it will generate drive signals for driving the LED indicating unit and the contact alarm unit through the logic processing of the processing logic, so as to realize the automatic alarm in the case of fan failure.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an electrical cabinet cooling device disclosed in an embodiment of the application;

FIG. 2 is a schematic structural diagram of a housing assembly in the heat dissipation device for an electrical cabinet disclosed in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a fan cover and a fan mounting plate assembly in an electrical cabinet cooling device disclosed in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a module mounting backplane assembly in an electrical cabinet cooling device disclosed in an embodiment of the present application;

5 is a schematic flowchart of an automatic alarm method disclosed in an embodiment of the application;

FIG. 6 is a schematic diagram of the principle of an automatic alarm disclosed in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Please refer to FIG. 1 , which is a schematic structural diagram of a heat dissipation device for an electrical cabinet according to an embodiment of the present application. As shown in FIG. 1 , an embodiment of the present application provides a heat dissipation device for an electrical cabinet, including: a fan unit A and a switch B. The fan unit A includes a fan 1 , a housing assembly 2 , a fan cover and a fan mounting plate assembly 3 and Module Mount Backplane Assembly 4, where:

As shown in FIG. 2 , the above-mentioned housing assembly 2 includes: a fan casing 21 , an air inlet plate 22 , a backplane mounting plate 23 and a nut 24 , and the fan unit A is connected by the nut through the backplane mounting plate 23 . 24 is installed in the electrical cabinet; the side of the casing assembly 2 has holes for installing the switch B.

In a specific embodiment, the above-mentioned fan casing 21 is formed by a sheet metal part, and its material is SPCC. As the casing assembled by the fan unit A, it can be used as a protective casing for the circuit board and the fan, and the side of the casing has holes. It is used to install switch B, which can make full use of the space and reduce the overall size of the module. It should be noted that the shell as a whole is plated with color zinc, and the outer surface is sprayed with plastic.

As shown in FIG. 3 , the fan cover and fan mounting plate assembly 3 includes: a fan cover and a fan mounting plate 31 , a connection terminal 32 , a fan cover 33 , a PCB board 34 , nuts and screws 35 , and the fan cover and the fan are installed The board 3 is used for the assembly carrier of the circuit board and the fan 1; the fan cover 33 and the fan 1 are installed on the fan cover and the fan mounting plate 31 through the screws and nuts 35, and the PCB board 34 is installed through the nuts. and screws 35 are fixed on the fan cover and the fan mounting plate 31 ; the connection terminals 32 are fixed on the fan cover and the fan mounting plate 31 by nuts and screws 35 .

In a specific embodiment, the material of the above-mentioned fan cover and fan mounting plate 31 is SPCC, and the outer surface is sprayed by color zinc plating. It should be noted that the fan cover and fan mounting plate are galvanized with color, and the outer surface is sprayed with plastic; the overall structure is compact and the assembly is reliable, which can meet the stable operation of the fan under the conditions of earthquake, shock and vibration.

As shown in FIG. 4 , the module mounting backplane assembly 4 includes: a module mounting backplane 41 , M5 screws 42 and M3 screws 43 .

In a specific embodiment, the material of the above-mentioned module installation backplane 41 is SPCC, and is formed by bending sheet metal, and is equipped with nuts and screws to be fixed inside the electrical cabinet. This installation method is reliable, compact and takes up little space. .

The embodiment of the present application provides a heat dissipation device for an electrical cabinet, which has the following advantages:

1) The fan casing is formed by bending sheet metal to form the 3 sides of the shell assembly. The backplane mounting plate is mounted on the fan casing by screws to form the fourth plane. The backplane mounting plate is installed independently, and the backplate can be adjusted according to different environments. The position of the mounting holes in the board mounting plate, the overall structure is highly replaceable, so that the entire module can be adjusted according to different mounting positions. The overall structure is composed of a closed cavity formed by sheet metal bending, which is firm and reliable, and meets the requirements of use under earthquake, shock and vibration conditions.

2) The fan is installed on the fan cover and the fan mounting plate through screws and nuts, and finally installed on the housing assembly as a whole, which is convenient for the later maintenance of the fan.

3) The installation positions of switches and terminals meet ergonomics, with reasonable installation positions and reliable installation methods.

4) The fan unit is fixed on the module installation backplane with screws. The opening position of the module installation backplane can be adjusted according to different installation environments to meet the requirements of different use environments. The overall structure is compact and the installation is firm. Requirements for use under working conditions.

5) The overall size of the electrical cabinet cooling device is 190X150X40, which can meet the installation requirements of miniaturized cabinets.

On the basis of the above-disclosed heat dissipation device for an electrical cabinet, as shown in FIG. 5 , an embodiment of the present application further discloses an automatic alarm method, which specifically includes the following steps:

S501: Monitor the fan unit in real time, and output a fault signal of the fan unit when monitoring the failure of the fan unit, where the fault signal includes a first fault signal and a second fault signal;

S502: Perform logical processing on the first fault signal and the second fault signal by using preset processing logic to generate a drive signal, and the drive signal is used to drive the LED indicating unit and/or the contact alarm unit;

S503: Drive the LED indicating unit and/or the contact alarm unit according to the drive signal, so as to realize automatic alarm in the state of fan failure.

In a specific embodiment, the internal cooling device of the electrical cabinet can realize automatic alarm when the internal fan fails. The specific alarm principle is shown in Figure 6. When the fan unit is abnormal, the two fault signals it outputs will be processed by Logic processing generates drive signals for driving LED indicating unit and contact alarm unit, so as to realize automatic alarm under the condition of fan failure.

It should be noted that, in the embodiment of the present application, the failure of the fan includes the fan blocking, the fan plug being disconnected, and the internal fan failing to rotate after being powered on, but it is not limited to these situations.

An automatic alarm method provided by an embodiment of the present application monitors a fan unit in real time, and outputs a fault signal of the fan unit when monitoring a fault of the fan unit, where the fault signal includes a first fault signal and a second fault signal ; carry out logical processing on the first fault signal and the second fault signal through preset processing logic, and generate a driving signal, and the driving signal is used to drive the LED indicating unit and/or the contact alarm unit; according to the driving The signal drives the LED indicating unit and/or the contact alarm unit to realize automatic alarm in the state of fan failure. Through the embodiment of the present application, when the fan unit is abnormal, the two output fault signals will generate drive signals for driving the LED indicating unit and the contact alarm unit through the logic processing of the processing logic, so as to realize automatic alarm under the condition of fan failure .

It should be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also no Other elements expressly listed, or which are also inherent to such a process, method, article of manufacture or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

The above are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (6)

1. A cooling device for an electrical cabinet, comprising: a fan unit and a switch, the fan unit comprising a fan, a housing assembly, a fan cover, a fan mounting plate assembly and a module mounting backplane assembly, wherein: The casing assembly includes: a fan casing, an air inlet plate, a backplane mounting plate and screws, and the fan unit is installed in the electrical cabinet by the screws through the backplane mounting plate; the side surface of the casing assembly has holes. , for installing the switch; The fan cover and the fan mounting plate assembly include: the fan cover and the fan mounting plate, the wiring terminal, the fan cover, the PCB board, the nuts and the screws, and the fan cover and the fan mounting plate are used for the assembly carrier of the circuit board and the fan ; The fan cover and the fan are mounted on the fan cover and the fan mounting plate by the screws and nuts, and the PCB board is fixed on the fan cover and the fan mounting plate by the screws and the rivet nuts; the wiring The terminals are fixed on the fan cover and the fan mounting plate by screws; The module installation backplane assembly includes: a module installation backplane, M5 screws and M3 screws. 2 . The heat dissipation device of an electrical cabinet according to claim 1 , wherein the fan housing is formed by a sheet metal part, and its material is SPCC. 3 . 3 . The heat dissipation device of an electrical cabinet according to claim 1 , wherein the material of the fan cover and the fan mounting plate is SPCC. 4 . 4 . The heat dissipation device for an electrical cabinet according to claim 1 , wherein the outer surface of the fan cover and the fan mounting plate is spray-coated by color galvanizing. 5 . 5 . The heat dissipation device for an electrical cabinet according to claim 1 , wherein the material of the module mounting backplane is SPCC, which is formed by bending sheet metal, and is fixed inside the electrical cabinet with screws. 6 . 6. An automatic alarm method, characterized in that, comprising: Monitoring the fan unit in real time, when monitoring the failure of the fan unit, outputting a fault signal of the fan unit, where the fault signal includes a first fault signal and a second fault signal; The first fault signal and the second fault signal are logically processed by preset processing logic to generate a drive signal, and the drive signal is used to drive the LED indicating unit and/or the contact alarm unit; The LED indicating unit and/or the contact alarm unit are driven according to the driving signal, so as to realize automatic alarm in the state of fan failure.

Images