Electrical cabinet heat dissipation device and automatic alarm method

Abstract

The present application provides an electrical cabinet heat dissipation device, including: 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. By installing the fan, the switch, the terminal, and the PCB board inside the box body, the electrical cabinet heat dissipation device can be installed inside a miniaturized cabinet, and the fan unit can be stably fixed under working conditions such as earthquakes, shocks, and vibrations. Furthermore, the present application also discloses an automatic alarm method, and when the fan unit is abnormal, the two fault signals outputted by the fan unit will generate driving signals for driving the LED indication unit and the contact alarm unit through the logical processing of the processing logic, thereby realizing automatic alarm under fan failure conditions.

Description

Technical Field

[0001] The present application relates to the field of digital dedicated instrumentation and control technology for nuclear power plants, and in particular, to an electrical cabinet heat dissipation device and an automatic alarm method. Background Art

[0002] The electrical cabinets are equipped with devices with high heat flux density. These devices generate a lot of heat during operation. The heat generated during operation will affect the stability of the equipment and damage the equipment. Therefore, the temperature of the electronic equipment inside the electrical cabinet needs to be controlled within a reliable range. It needs to meet the reliability under working conditions such as earthquakes, shocks and vibrations to meet environmental requirements. At the same time, some electrical cabinets in the digital dedicated instrumentation and control system of nuclear power plants are miniaturized cabinets with small size and high internal integration, which leads to large heat dissipation of the cabinets. Therefore, the heat dissipation device is an indispensable device inside the miniaturized cabinet. The heat dissipation device dissipates the heat of the equipment inside the cabinet to ensure that the equipment inside the cabinet can work normally.

[0003] The fan units currently on the market take up a lot of space and cannot meet the configuration requirements of small cabinets. In addition, when the fan fails, it cannot issue a timely alarm, which can easily cause damage to the equipment. Summary of the invention

[0004] In view of the problems mentioned above, the present application provides an electrical cabinet heat dissipation device and an automatic alarm method, which are used to meet the requirements of stable fixation under working conditions such as earthquakes, shocks and vibrations, and can be installed inside a small cabinet to reliably control the temperature.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An electrical cabinet heat dissipation device comprises: a fan unit and a switch, wherein the fan unit comprises a fan, a housing assembly, a fan cover, a fan mounting plate assembly and a module mounting back plate assembly, wherein:

[0007] The housing assembly comprises: a fan housing, an air inlet plate, a back plate mounting plate and screws, wherein the fan unit is mounted in the electrical cabinet through the back plate mounting plate by the screws; a side opening of the housing assembly is used to mount the switch;

[0008] The fan cover and fan mounting plate assembly comprises: a fan mounting plate, a wiring terminal, a fan cover, a PCB board, nuts and screws. The fan cover and the fan mounting plate are used as an assembly carrier for the circuit board and the fan; the fan cover and the fan are mounted on the fan mounting plate by the nuts and screws, and the PCB board is fixed to the fan mounting plate by screws and rivet nuts; the wiring terminal is fixed to the fan mounting plate by screws;

[0009] The module mounting backplane assembly comprises: a module mounting backplane, M5 screws and M3 screws.

[0010] Furthermore, the fan housing is formed of sheet metal, and its material is SPCC.

[0011] Furthermore, the fan cover and the fan mounting plate are made of SPCC.

[0012] Furthermore, the fan cover and the fan mounting plate are subjected to external surface spraying treatment by zinc plating.

[0013] Furthermore, the module mounting back plate is made of SPCC and is formed by bending sheet metal and is fixed inside the electrical cabinet with screws.

[0014] An automatic alarm method, comprising:

[0015] Monitor the fan unit in real time, and when a fault occurs in the fan unit, output a fault signal of the fan unit, wherein the fault signal includes a first fault signal and a second fault signal;

[0016] Performing logic processing on the first fault signal and the second fault signal through a preset processing logic to generate a drive signal, wherein the drive signal is used to drive an LED indication unit and / or a contact alarm unit;

[0017] The LED indication unit and / or the contact alarm unit are driven according to the driving signal to realize automatic alarm in the fan failure state.

[0018] The electrical cabinet heat dissipation device described in the present application includes: 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. By installing the fan, the switch, the terminal and the PCB board inside the box body, the electrical cabinet heat dissipation device can be installed inside a miniaturized cabinet to ensure stable fixation of the fan unit under working conditions such as earthquakes, impacts and vibrations.

[0019] Furthermore, the present application also discloses an automatic alarm method, which monitors the fan unit in real time, and when the fan unit is detected to have a fault, outputs a fault signal of the fan unit, wherein 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 a preset processing logic to generate a drive signal, wherein the drive signal is used to drive an LED indication unit and / or a contact alarm unit; the LED indication unit and / or the contact alarm unit are driven according to the drive signal to realize an automatic alarm in a fan failure state. Through the present application, when an abnormality occurs in the fan unit, the two fault signals outputted by the fan unit will generate a drive signal for driving the LED indication unit and the contact alarm unit through the logical processing of the processing logic, thereby realizing an automatic alarm in a fan failure state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a heat dissipation device for an electrical cabinet disclosed in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a housing assembly in an electrical cabinet heat dissipation device disclosed in an embodiment of the present application;

[0023] Figure 3 It is a structural schematic diagram of a fan cover and a fan mounting plate assembly in an electrical cabinet heat dissipation device disclosed in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of a module mounting backplane assembly in an electrical cabinet heat dissipation device disclosed in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of a flow chart of an automatic alarm method disclosed in an embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the principle of the automatic alarm disclosed in the embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Please see attached Figure 1 , is a schematic diagram of the structure of an electrical cabinet heat dissipation device provided in an embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides an electrical cabinet heat dissipation device, including: a fan unit A and a switch B, wherein the fan unit A includes a fan 1, a housing assembly 2, a fan cover and a fan mounting plate assembly 3 and a module mounting backplane assembly 4, wherein:

[0029] like Figure 2 As shown, the above-mentioned shell assembly 2 includes: a fan housing 21, an air inlet plate 22, a back panel mounting plate 23 and screws 24. The fan unit A is installed in the electrical cabinet by the screws 24 through the back panel mounting plate 23; the side opening of the shell assembly 2 is used to install the switch B.

[0030] In a specific embodiment, the fan housing 21 is formed of sheet metal and made of SPCC. As a housing for assembling the fan unit A, it can be used as a protective housing for the circuit board and the fan. A hole is opened on the side of the housing for installing the switch B. From the structural form, the space can be fully utilized and the overall size of the module can be reduced. It should be noted that the housing is treated with colored zinc plating as a whole and the outer surface is sprayed with plastic.

[0031] like Figure 3 As shown, the fan cover and fan mounting plate assembly 3 includes: a fan mounting plate 31, a terminal block 32, a fan cover 33, a PCB board 34, nuts and screws 35. The fan cover 33 and the fan mounting plate 31 are used as an assembly carrier for the circuit board and the fan 1; the fan cover 33 and the fan 1 are installed on the fan mounting plate 31 by the nuts and screws 35, and the PCB board 34 is fixed to the fan mounting plate 31 by the nuts and screws 35; the terminal block 32 is fixed to the fan mounting plate 31 by the nuts and screws 35.

[0032] In a specific embodiment, the fan cover 33 and the fan mounting plate 31 are made of SPCC, and the outer surface is sprayed with plastic by zinc plating. It should be noted that the fan cover and the fan mounting plate are zinc-plated and the outer surface is sprayed with plastic; the overall structure is compact and reliable to assemble, which can ensure the fan to work stably under working conditions such as earthquake, impact and vibration.

[0033] like Figure 4As shown, the module mounting backplane assembly 4 includes: a module mounting backplane 41 , M5 screws 42 and M3 screws 43 .

[0034] In a specific embodiment, the module mounting back plate 41 is made of SPCC and is formed by bending sheet metal and is fixed inside the electrical cabinet with nuts and screws. This installation method is reliable, compact, and occupies little space.

[0035] The present application provides a heat dissipation device for an electrical cabinet, which has the following advantages:

[0036] 1) The fan housing is formed of three sides of the housing assembly by bending sheet metal, and the back plate mounting plate is installed on the fan housing by screws to form the fourth side. The back plate mounting plate is installed independently, and the position of the mounting holes in the back plate mounting plate can be adjusted according to different environments. The overall structure is highly replaceable, so that the entire module can be adjusted according to different installation positions. The overall structure consists of a closed cavity formed by bending sheet metal, which is firm and reliable, and meets the requirements for use under working conditions such as earthquakes, shocks and vibrations.

[0037] 2) The fan is installed on the fan cover and fan mounting plate through nuts and screws, and finally installed as a whole on the housing assembly, which is convenient for later maintenance of the fan.

[0038] 3) The installation position of switches and terminal blocks meets ergonomics, the installation position is reasonable, and the installation method is reliable.

[0039] 4) The fan unit is fixed to the module mounting backplane with screws. The opening position of the module mounting backplane can be adjusted according to different installation environments to meet the requirements of different usage environments. The overall structure is compact and firmly installed to meet the usage requirements under working conditions such as earthquakes, shocks and vibrations.

[0040] 5) The overall size of the electrical cabinet heat dissipation device is 190X150X40, which can meet the installation requirements of miniaturized cabinets.

[0041] Based on the above disclosed electrical cabinet heat dissipation device, Figure 5 As shown, the embodiment of the present application also discloses an automatic alarm method, which specifically includes the following steps:

[0042] S501: monitor a fan unit in real time, and when a fault occurs in the fan unit, output a fault signal of the fan unit, wherein the fault signal includes a first fault signal and a second fault signal;

[0043] S502: performing logic processing on the first fault signal and the second fault signal by a preset processing logic to generate a driving signal, wherein the driving signal is used to drive an LED indication unit and / or a contact alarm unit;

[0044] S503: driving the LED indication unit and / or the contact alarm unit according to the driving signal to realize automatic alarm in the fan failure state.

[0045] In a specific embodiment, the heat dissipation device of the electrical cabinet can realize automatic alarm in case of failure of the internal fan. The specific alarm principle is as follows: Figure 6 As shown, when the fan unit is abnormal, the two fault signals it outputs will generate driving signals for driving the LED indication unit and the contact alarm unit through logical processing of the processing logic, thereby realizing automatic alarm in the event of fan failure.

[0046] It should be noted that in the embodiments of the present application, fan failure situations include fan blocking, fan plug disconnection, and internal fan not rotating when powered on, but are not limited to these situations.

[0047] An automatic alarm method provided by an embodiment of the present application monitors a fan unit in real time, and when a fault occurs in the fan unit, outputs a fault signal of the fan unit, wherein 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 a preset processing logic to generate a drive signal, wherein the drive signal is used to drive an LED indication unit and / or a contact alarm unit; the LED indication unit and / or the contact alarm unit are driven according to the drive signal to realize automatic alarm in a fan failure state. Through the embodiment of the present application, when an abnormality occurs in the fan unit, the two fault signals output by the fan unit will generate drive signals for driving the LED indication unit and the contact alarm unit through logical processing of the processing logic, thereby realizing automatic alarm in a fan failure state.

[0048] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0049] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. An electrical cabinet heat dissipation device, characterized in that: include: A fan unit and a switch, wherein the fan unit comprises a fan, a housing assembly, a fan cover, a fan mounting plate assembly and a module mounting back plate assembly, wherein: The housing assembly comprises: a fan housing, an air inlet plate, a back plate mounting plate and screws, wherein the fan unit is mounted in the electrical cabinet via the back plate mounting plate and the screws; a side opening of the housing assembly is used to mount the switch; the fan housing is formed by bending sheet metal to form three surfaces of the housing assembly, the back plate mounting plate is mounted on the fan housing by screws to form a fourth surface, and the overall structure consists of a closed cavity formed by bending sheet metal; The fan cover and fan mounting plate assembly comprises: a fan mounting plate, a wiring terminal, a fan cover, a PCB board, nuts and screws. The fan cover and the fan mounting plate are used as an assembly carrier for the circuit board and the fan; the fan cover and the fan are mounted on the fan mounting plate by the nuts and screws, and the PCB board is fixed to the fan mounting plate by screws and rivet nuts; the wiring terminal is fixed to the fan mounting plate by screws; the fan cover and the fan mounting plate assembly are integrally mounted on the housing assembly; The module mounting backplane assembly comprises: a module mounting backplane, M5 screws and M3 screws; the fan unit is fixed to the module mounting backplane by screws.

2. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The fan housing is formed of sheet metal and is made of SPCC.

3. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The fan cover and the fan mounting plate are made of SPCC.

4. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The fan cover and the fan mounting plate are subjected to plastic spraying treatment on the outer surfaces through zinc plating.

5. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The module mounting back plate is made of SPCC and is formed by bending sheet metal and is fixed inside the electrical cabinet with screws.

6. An automatic alarm method, characterized in that: Applied to the electrical cabinet heat dissipation device according to any one of claims 1 to 5, the method comprises: Monitor the fan unit in real time, and when a fault occurs in the fan unit, output a fault signal of the fan unit, wherein the fault signal includes a first fault signal and a second fault signal; Performing logic processing on the first fault signal and the second fault signal through a preset processing logic to generate a drive signal, wherein the drive signal is used to drive an LED indication unit and / or a contact alarm unit; The LED indication unit and / or the contact alarm unit are driven according to the driving signal to realize automatic alarm in the fan failure state.

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