CN114980668B - A cooling device for explosion-proof electric control box and a method of using the same - Google Patents
A cooling device for explosion-proof electric control box and a method of using the same Download PDFInfo
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- CN114980668B CN114980668B CN202210543412.4A CN202210543412A CN114980668B CN 114980668 B CN114980668 B CN 114980668B CN 202210543412 A CN202210543412 A CN 202210543412A CN 114980668 B CN114980668 B CN 114980668B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20345—Sprayers; Atomizers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
一种用于防爆电控箱的降温设备及其使用方法，降温设备包括：壳体、冷却液箱、冷却液喷雾装置、控制器、喷淋电磁开关和多个温度传感器；冷却液喷雾装置上设置有压缩空气管、进液管和喷淋歧管，压缩空气管与压缩气源管道相连通，进液管与冷却液箱内部相连通，喷淋歧管上设置有多个喷淋口，各喷淋口的开口上均设置有喷淋电磁开关，控制器的温度信号输入端分别与各个温度传感器相连接，控制器的一组喷淋信号输出端分别与各个喷淋电磁开关的喷淋信号输入端相连接。本设计不仅可以通过温度传感器、控制器和喷淋电磁开关配合，对壳体内不同区域进行降温，有效提高电控箱散热效率，而且降温设备不会产生放电火花，有效提高系统安全性。
A cooling device for an explosion-proof electric control box and a method of using the same, the cooling device comprising: a shell, a coolant tank, a coolant spray device, a controller, a spray electromagnetic switch and a plurality of temperature sensors; the coolant spray device is provided with a compressed air pipe, a liquid inlet pipe and a spray manifold, the compressed air pipe is connected to the compressed air source pipeline, the liquid inlet pipe is connected to the inside of the coolant tank, the spray manifold is provided with a plurality of spray ports, and a spray electromagnetic switch is provided on the opening of each spray port, the temperature signal input end of the controller is respectively connected to each temperature sensor, and a group of spray signal output ends of the controller are respectively connected to the spray signal input ends of each spray electromagnetic switch. This design can not only cool down different areas in the shell through the cooperation of the temperature sensor, the controller and the spray electromagnetic switch, effectively improving the heat dissipation efficiency of the electric control box, but also the cooling device will not generate discharge sparks, effectively improving the safety of the system.
Description
Technical Field
The invention relates to cooling equipment, in particular to cooling equipment for an explosion-proof electric cabinet and a use method thereof, which are particularly suitable for cooling equipment with an explosion-proof function and low maintenance cost.
Background
The electric cabinet is a core part for controlling mechanical equipment in electric automation, various electric components are contained in the electric cabinet, a large amount of heat is generated when various electronic components in the electric cabinet work, if the temperature in the electric cabinet is too high, the performance of the electronic components in the electric cabinet can be influenced, even the situation that the electronic components in the electric cabinet are overheated and burnt out can be caused, and therefore the interior of the electric cabinet must be cooled through cooling equipment;
for the special explosion-proof electric cabinet suitable for special environment, besides normal cooling requirement, the combustible mixture inside and outside the electric cabinet is required to be prevented from explosion, the cooling equipment adopted at present accelerates the air circulation speed inside and outside the electric cabinet through a fan, reduces the internal temperature of the electric cabinet through heat convection, and has the following defects although the method can realize the cooling effect to a certain extent:
1. The rated voltage of the cooling fan is higher, electric sparks are easy to generate during operation, and for an explosion-proof electric cabinet applied to dangerous dust or dangerous gas environments, the electric sparks are easy to ignite dust or gas in the electric cabinet, so that electronic components in the electric cabinet are damaged.
2. In order to achieve the cooling effect, air circulation needs to be kept inside and outside the electric cabinet, dust outside the electric cabinet is easy to substitute into the electric cabinet, the dust is adsorbed on the surface of the electronic component under the action of static electricity, heat dissipation of the electronic component is seriously hindered, periodic cleaning is needed, and maintenance cost is increased.
Disclosure of Invention
The invention aims to overcome the defects that the cooling equipment in the prior art is easy to generate electric sparks and has higher maintenance cost, and provides the cooling equipment with an explosion-proof function and lower maintenance cost.
In order to achieve the above object, the technical solution of the present invention is:
The cooling equipment comprises a shell, a cooling liquid tank, a cooling liquid spraying device, a controller, a spraying electromagnetic switch and a plurality of temperature sensors, wherein the top of the cooling liquid tank is fixedly connected with the bottom of the shell, the cooling liquid spraying device is arranged inside the shell, a compressed air pipe, a liquid inlet pipe and a spraying manifold are arranged on the cooling liquid spraying device, one ends of the compressed air pipe, the liquid inlet pipe and the spraying manifold are mutually communicated through a three-way joint, the other end of the compressed air pipe is communicated with a compressed air source pipeline, the other end of the liquid inlet pipe is communicated with the inside of the cooling liquid tank, a plurality of spraying openings are formed in the other end of the spraying manifold, a spraying electromagnetic switch is arranged on an opening of each spraying opening, the controller and the temperature sensors are arranged on the inner wall of the shell, a group of temperature signal input ends on the controller are respectively connected with signal output ends of the temperature sensors, and a group of signal output ends of the controller are respectively connected with signal input ends of the spraying electromagnetic switches.
The cooling liquid spraying device further comprises an air inlet electromagnetic switch, the air inlet electromagnetic switch is a two-way cartridge valve capable of controlling the opening amount, the air inlet electromagnetic switch is arranged on an opening of the compressed air pipe, and an air inlet signal input end of the air inlet electromagnetic switch is connected with an air inlet signal output end of the controller.
The cooling liquid spraying device further comprises a liquid inlet electromagnetic switch, the liquid inlet electromagnetic switch is arranged on an opening of the liquid inlet pipe, and a liquid inlet signal input end of the liquid inlet electromagnetic switch is connected with a liquid inlet signal output end of the controller.
The other end of the spray manifold is provided with a plurality of spray ports, the spray ports are uniformly arranged on the inner wall of the shell, each spray port is provided with a spray electromagnetic switch, each temperature sensor is respectively corresponding to one spray port, and the spray signal output end of the controller is respectively connected with the spray signal input end of each spray electromagnetic switch.
The shell is divided into a plurality of areas by a plurality of electrical component mounting plates, at least one spraying opening is arranged in each area, and the opening direction of each spraying opening is parallel to the electrical component mounting plates.
The electric cabinet further comprises a shutter, and the shutter is arranged on the side part of the shell.
The cooling liquid tank is internally provided with a liquid level sensor, a liquid level signal output end of the liquid level sensor is connected with an alarm device through an improvement signal line, and cooling liquid is filled in the cooling liquid tank.
The cooling liquid is dichloromethane or alcohol.
The use method of the cooling equipment for the explosion-proof electric cabinet and the use method thereof comprises the following steps:
Setting a threshold value, wherein system maintenance personnel set a first threshold value and a second threshold value of each region in a controller according to the working temperatures of electronic components in different regions in a shell in the installation stage of cooling equipment, the second threshold value is the maximum allowed working temperature of each electronic component in the region, and the first threshold value is as follows:
first threshold = second threshold-10 ℃;
Detecting temperature, wherein each temperature sensor continuously detects the temperature of a corresponding area of the shell and sends out real-time temperature signals to the controller, when any one of the real-time temperature signals received by the controller reaches a first threshold value, the controller sends out working signals to the air inlet electromagnetic switch and the spray electromagnetic switch, and the system enters a third-step air cooling mode;
the third step, after the controller sends working signals to the air inlet electromagnetic switch and the spray electromagnetic switch, the air inlet electromagnetic switch and the spray electromagnetic switch are turned on, at the moment, compressed air provided by an external air source is sprayed to a corresponding area through a compressed air pipe and a spray manifold, after the temperature sensor detects that the temperature is lower than a first threshold value below-5 ℃, the controller sends working signals to the air inlet electromagnetic switch and the spray electromagnetic switch, the air inlet electromagnetic switch and the spray electromagnetic switch are turned off, at the moment, the air cooling mode is completed, and the system returns to the second step for detecting the temperature;
The fourth step, liquid cooling mode, after the controller sends out the working signal to the air inlet electromagnetic switch, the liquid inlet electromagnetic switch and the spray electromagnetic switch, the air inlet electromagnetic switch, the liquid inlet electromagnetic switch and the spray electromagnetic switch are opened, at the moment, the compressed air provided by the external air source is sprayed to the corresponding area through the compressed air pipe and the spray manifold, the compressed air forms high-speed air flow in the compressed air pipe, at the moment, the internal pressure of the compressed air pipe is lower than the atmospheric pressure, the cooling liquid in the cooling liquid tank is influenced by the pressure difference and enters the compressed air pipe through the liquid inlet pipe and is mixed with the compressed air, the mixture of the compressed air and the cooling liquid is sprayed into the shell through the corresponding spray manifold, after the temperature sensor detects that the temperature is lower than the second threshold, the controller sends out the working signal to the liquid inlet electromagnetic switch, the liquid inlet electromagnetic switch is closed, at the moment, the liquid cooling mode is completed, and the system enters the fifth step of discharging steam;
and fifthly, discharging steam, wherein after the liquid inlet electromagnetic switch is closed, the air inlet electromagnetic switch and the spray electromagnetic switch are still opened, compressed air is continuously sprayed into a corresponding area in the shell, high-speed air flow formed by the compressed air drives steam formed by heating of cooling liquid in the shell and residual non-volatilized cooling liquid to leave the shell through the shutter, after the steam discharging step lasts for minutes, the controller sends working signals to the air inlet electromagnetic switch and the spray electromagnetic switch, the air inlet electromagnetic switch and the spray electromagnetic switch are closed, at the moment, an air cooling mode is finished, and the system returns to the second step of temperature detection.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention relates to cooling equipment for an explosion-proof electric cabinet and a using method thereof, wherein a plurality of temperature sensors are in signal connection with a controller, when the temperature detected by the temperature sensors is too high, the controller sends out signals to drive spray electromagnetic switches on spray ports at corresponding positions in a shell to be opened, at the moment, compressed air at an air source side enters the inside of the shell through a compressed air pipe, the air pressure in the compressed air pipe is reduced, cooling liquid in a cooling liquid tank enters the compressed air pipe under the influence of pressure difference and is mixed with the compressed air, and the cooling liquid is sprayed into the shell through corresponding spray manifolds to reduce the temperature, and meanwhile, the electrified equipment in the system only has all spray electromagnetic switches and all the temperature sensors, so that the working voltage is lower and discharge spark cannot be generated. Therefore, this design can be through temperature sensor, controller and spray electromagnetic switch cooperation, cools down different regions in the casing, effectively improves electric cabinet radiating efficiency, and cooling device can not produce the spark that discharges simultaneously, effectively improves system security.
2. According to the cooling equipment for the explosion-proof electric cabinet and the using method thereof, the opening degree of the spraying electromagnetic switch can be adjusted according to the temperature detected by the temperature sensor, the opening degree influences the speed of compressed air and the content of cooling liquid, and further influences the cooling efficiency, meanwhile, the opening of the liquid inlet pipe is provided with the liquid inlet electromagnetic switch, and when the temperature detected by the temperature sensor is slightly higher, the controller can close the liquid inlet electromagnetic switch and only cool through compressed air. Therefore, this design can adopt different cooling modes according to the cooling demand, effectively improves the application scope of cooling equipment, reduces running cost simultaneously.
3. According to the cooling equipment for the explosion-proof electric cabinet and the use method thereof, the liquid level sensor is arranged in the cooling liquid tank, so that the cooling liquid amount in the cooling liquid tank can be monitored, dichloromethane or alcohol can be selected as required for the cooling liquid, the dichloromethane is generally incombustible, combustion and even explosion can be avoided when electric sparks occur, a large amount of flammable and explosive dangerous dust or dangerous gas is generated in the application environment of some explosion-proof electric cabinets, the combustibility of the cooling liquid is not required to be considered, and the toxicity of the dichloromethane can be avoided by taking the alcohol as the cooling liquid. Therefore, the design can select dichloromethane or alcohol according to requirements, the dichloromethane can effectively improve the safety of cooling equipment, and the alcohol can reduce the toxicity of cooling liquid.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the present invention.
In the figure, a shell 1, a cooling liquid tank 2, a cooling liquid spraying device 3, a compressed air pipe 31, a liquid inlet pipe 32, a spray manifold 33, a spray port 34, an air inlet electromagnetic switch 35, a liquid inlet electromagnetic switch 36, a controller 4, a spray electromagnetic switch 5, a temperature sensor 6, a shutter 7 and an electric element mounting plate 8.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1, the cooling equipment for the explosion-proof electric cabinet and the use method thereof comprise a shell 1, a cooling liquid box 2, a cooling liquid spraying device 3, a controller 4, a spraying electromagnetic switch 5 and a plurality of temperature sensors 6, wherein the top of the cooling liquid box 2 is fixedly connected with the bottom of the shell 1, the cooling liquid spraying device 3 is arranged in the shell 1, a compressed air pipe 31, a liquid inlet pipe 32 and a spraying manifold 33 are arranged on the cooling liquid spraying device 3, one ends of the compressed air pipe 31, the liquid inlet pipe 32 and the spraying manifold 33 are mutually communicated through a three-way joint, the other end of the compressed air pipe 31 is communicated with a compressed air source pipeline, the other end of the liquid inlet pipe 32 is communicated with the interior of the cooling liquid box 2, a plurality of spraying ports 34 are arranged at the other end of the spraying manifold 33, one spraying electromagnetic switch 5 is arranged on the opening of each spraying port 34, the controller 4 and the plurality of temperature sensors 6 are arranged on the inner wall of the shell 1, one group of temperature signal input ends of the controller 4 are respectively connected with one group of electromagnetic signal output ends of the spraying switches 6, and one group of electromagnetic signal output ends of the spraying switches 4 are respectively connected with one group of the electromagnetic signal output ends of the spraying switches 4.
The cooling liquid spraying device 3 further comprises an air inlet electromagnetic switch 35, the air inlet electromagnetic switch 35 is a two-way cartridge valve capable of controlling the opening amount, the air inlet electromagnetic switch 35 is arranged on the opening of the compressed air pipe 31, and an air inlet signal input end of the air inlet electromagnetic switch 35 is connected with an air inlet signal output end of the controller 4.
The cooling liquid spraying device 3 further comprises a liquid inlet electromagnetic switch 36, the liquid inlet electromagnetic switch 36 is arranged on the opening of the liquid inlet pipe 32, and a liquid inlet signal input end of the liquid inlet electromagnetic switch 36 is connected with a liquid inlet signal output end of the controller 4.
The other end of the spray manifold 33 is provided with a plurality of spray ports 34, the spray ports 34 are uniformly arranged on the inner wall of the shell 1, a spray electromagnetic switch 5 is arranged on the opening of each spray port 34, each temperature sensor 6 is respectively corresponding to one spray port 34, and the spray signal output end of the controller 4 is respectively connected with the spray signal input end of each spray electromagnetic switch 5.
The interior of the shell 1 is divided into a plurality of areas by a plurality of electrical component mounting plates 8, at least one spraying opening 34 is arranged in each area, and the opening direction of each spraying opening 34 is parallel to the electrical component mounting plates 8.
The electric cabinet further comprises a shutter 7, and the shutter 7 is arranged on the side part of the shell 1.
The cooling liquid tank 2 is internally provided with a liquid level sensor, a liquid level signal output end of the liquid level sensor is connected with an alarm device through a signal line, and cooling liquid is filled in the cooling liquid tank 2.
The cooling liquid is dichloromethane or alcohol.
The use method of the cooling equipment for the explosion-proof electric cabinet and the use method thereof comprises the following steps:
Setting a threshold value, wherein in the installation stage of cooling equipment, system maintenance personnel sets a first threshold value and a second threshold value of each area in the controller 4 according to the working temperatures of electronic components in different areas in the shell 1, wherein the second threshold value is the maximum allowed working temperature of each electronic component in the area, and the first threshold value is as follows:
first threshold = second threshold-10 ℃;
Detecting temperature, wherein each temperature sensor 6 continuously detects the temperature of a corresponding area of the shell 1 and sends out real-time temperature signals to the controller 4, when any one of the real-time temperature signals received by the controller 4 reaches a first threshold value, the controller 4 sends out working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the system enters a third-step air cooling mode, and when any one of the real-time temperature signals received by the controller 4 reaches a second threshold value, the controller 4 sends out working signals to the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5, and the system enters a fourth-step liquid cooling mode;
The third step, after the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5 are turned on, at the moment, compressed air provided by an external air source is sprayed to a corresponding area through the compressed air pipe 31 and the spray manifold 33, after the temperature sensor 6 detects that the temperature is lower than a first threshold value below-5 ℃, the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5 are turned off, at the moment, the air cooling mode is finished, and the system returns to the second step of detecting the temperature;
A fourth step of liquid cooling mode, after the controller 4 sends working signals to the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5 are opened, at the moment, compressed air provided by an external air source is sprayed to a corresponding area through the compressed air pipe 31 and the spray manifold 33, the compressed air forms high-speed air flow in the compressed air pipe 31, at the moment, the internal pressure of the compressed air pipe 31 is lower than the atmospheric pressure, the cooling liquid in the cooling liquid tank 2 is influenced by pressure difference, enters the compressed air pipe 31 through the liquid inlet pipe 32 and is mixed with the compressed air, the mixture of the compressed air and the cooling liquid is sprayed into the shell 1 through the corresponding spray manifold 33, after the temperature sensor 6 detects that the temperature is lower than a second threshold value, the controller 4 sends working signals to the liquid inlet electromagnetic switch 36, at the moment, the liquid cooling mode is completed, and the system enters a fifth step of discharging steam;
and fifthly, discharging steam, wherein after the liquid inlet electromagnetic switch 36 is closed, the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5 are still opened, compressed air is continuously sprayed into a corresponding area in the shell 1, high-speed air flow formed by the compressed air drives steam formed by heating cooling liquid in the shell 1 and residual non-volatilized cooling liquid to leave the shell 1 through the louver 7, after the steam discharging step lasts for 5 minutes, the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5 are closed, an air cooling mode is finished at the moment, and the system returns to the second step of detecting temperature.
The principle of the invention is explained as follows:
In the air cooling mode, the high-speed air flow formed by compressed air forms forced convection of air in the shell 1, so that the temperature of the surface of an electrical element is reduced;
In the liquid cooling mode, the temperature is reduced not only through forced convection, but also after the volatile cooling liquid enters the shell 1, the volatile cooling liquid contacts high-temperature air in the shell 1, and then the air temperature is reduced through volatilization.
Example 1:
A cooling device for an explosion-proof electric cabinet and a use method thereof are provided, wherein the cooling device comprises a shell 1, a cooling liquid tank 2, a cooling liquid spraying device 3, a controller 4, a spraying electromagnetic switch 5 and a plurality of temperature sensors 6; the top of the cooling liquid tank 2 is fixedly connected with the bottom of the shell 1, the cooling liquid spraying device 3 is arranged in the shell 1, the cooling liquid spraying device 3 is provided with a compressed air pipe 31, a liquid inlet pipe 32 and a spray manifold 33, one ends of the compressed air pipe 31, the liquid inlet pipe 32 and the spray manifold 33 are mutually communicated through a three-way joint, the other end of the compressed air pipe 31 is communicated with a compressed air source pipeline, the other end of the liquid inlet pipe 32 is communicated with the inside of the cooling liquid tank 2, the other end of the spray manifold 33 is provided with a plurality of spray openings 34, the opening of each spray opening 34 is provided with a spray electromagnetic switch 5, the inner wall of the shell 1 is provided with a controller 4 and a plurality of temperature sensors 6, a group of temperature signal input ends of the controller 4 are respectively connected with signal output ends of the spray electromagnetic switches 6, a group of spray signal output ends of the controller 4 are respectively connected with air inlet signal input ends of the electromagnetic switches 5, the cooling liquid spraying device 3 further comprises an electromagnetic switch 35, the electromagnetic switch 35 is arranged on the air inlet pipe 3, the electromagnetic switch 35 can be connected with the electromagnetic switch 36, the electromagnetic switch 36 is arranged on the air inlet pipe 3, the electromagnetic switch 36 can be connected with the electromagnetic switch 3, the electromagnetic switch 36 is arranged on the air inlet valve is connected with the electromagnetic switch 3, the liquid inlet signal input end of the liquid inlet electromagnetic switch 36 is connected with the liquid inlet signal output end of the controller 4, a plurality of spray ports 34 are arranged at the other end of the spray manifold 33, the spray ports 34 are uniformly arranged on the inner wall of the shell 1, a spray electromagnetic switch 5 is arranged on the opening of each spray port 34, each temperature sensor 6 is respectively corresponding to one spray port 34, the spray signal output end of the controller 4 is respectively connected with the spray signal input end of each spray electromagnetic switch 5, a liquid level sensor is arranged in the cooling liquid tank 2, a liquid level signal output end of the liquid level sensor is connected with an alarm device through a signal line, and cooling liquid is filled in the cooling liquid tank 2.
The use method of the cooling equipment for the explosion-proof electric cabinet and the use method thereof comprises the following steps:
Setting a threshold value, wherein in the installation stage of cooling equipment, system maintenance personnel sets a first threshold value and a second threshold value of each area in the controller 4 according to the working temperatures of electronic components in different areas in the shell 1, wherein the second threshold value is the maximum allowed working temperature of each electronic component in the area, and the first threshold value is as follows:
first threshold = second threshold-10 ℃;
Detecting temperature, wherein each temperature sensor 6 continuously detects the temperature of a corresponding area of the shell 1 and sends out real-time temperature signals to the controller 4, when any one of the real-time temperature signals received by the controller 4 reaches a first threshold value, the controller 4 sends out working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the system enters a third-step air cooling mode, and when any one of the real-time temperature signals received by the controller 4 reaches a second threshold value, the controller 4 sends out working signals to the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5, and the system enters a fourth-step liquid cooling mode;
The third step, after the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5 are turned on, at the moment, compressed air provided by an external air source is sprayed to a corresponding area through the compressed air pipe 31 and the spray manifold 33, after the temperature sensor 6 detects that the temperature is lower than a first threshold value below-5 ℃, the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spray electromagnetic switch 5 are turned off, at the moment, the air cooling mode is finished, and the system returns to the second step of detecting the temperature;
A fourth step of liquid cooling mode, after the controller 4 sends working signals to the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5, the air inlet electromagnetic switch 35, the liquid inlet electromagnetic switch 36 and the spray electromagnetic switch 5 are opened, at the moment, compressed air provided by an external air source is sprayed to a corresponding area through the compressed air pipe 31 and the spray manifold 33, the compressed air forms high-speed air flow in the compressed air pipe 31, at the moment, the internal pressure of the compressed air pipe 31 is lower than the atmospheric pressure, the cooling liquid in the cooling liquid tank 2 is influenced by pressure difference, enters the compressed air pipe 31 through the liquid inlet pipe 32 and is mixed with the compressed air, the mixture of the compressed air and the cooling liquid is sprayed into the shell 1 through the corresponding spray manifold 33, after the temperature sensor 6 detects that the temperature is lower than a second threshold value, the controller 4 sends working signals to the liquid inlet electromagnetic switch 36, at the moment, the liquid cooling mode is completed, and the system enters a fifth step of discharging steam;
and fifthly, discharging steam, wherein after the liquid inlet electromagnetic switch 36 is closed, the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5 are still opened, compressed air is continuously sprayed into a corresponding area in the shell 1, high-speed air flow formed by the compressed air drives steam formed by heating cooling liquid in the shell 1 and residual non-volatilized cooling liquid to leave the shell 1 through the louver 7, after the steam discharging step lasts for 5 minutes, the controller 4 sends working signals to the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5, the air inlet electromagnetic switch 35 and the spraying electromagnetic switch 5 are closed, an air cooling mode is finished at the moment, and the system returns to the second step of detecting temperature.
Example 2:
Example 2 is substantially the same as example 1 except that:
the electric cabinet is characterized in that the interior of the shell 1 is divided into a plurality of areas by a plurality of electric element mounting plates 8, at least one spraying opening 34 is arranged in each area, the opening direction of each spraying opening 34 is parallel to the electric element mounting plates 8, the electric cabinet further comprises a shutter 7, and the shutter 7 is arranged on the side part of the shell 1.
Example 3:
example 3 is substantially the same as example 2 except that:
The cooling liquid is dichloromethane or alcohol.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210543412.4A CN114980668B (en) | 2022-05-19 | 2022-05-19 | A cooling device for explosion-proof electric control box and a method of using the same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210543412.4A CN114980668B (en) | 2022-05-19 | 2022-05-19 | A cooling device for explosion-proof electric control box and a method of using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109831899A (en) * | 2019-03-29 | 2019-05-31 | 北京丰联奥睿科技有限公司 | A kind of liquid cooled server cabinet |
| CN209676723U (en) * | 2018-10-17 | 2019-11-22 | 广州珐玛珈智能设备股份有限公司 | A kind of Electrical Box Cooling System |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4426396B2 (en) * | 2004-07-30 | 2010-03-03 | エスペック株式会社 | Cooling system |
| JP4177796B2 (en) * | 2004-07-30 | 2008-11-05 | エスペック株式会社 | Cooling system |
| JP2011203963A (en) * | 2010-03-25 | 2011-10-13 | Fujitsu Ltd | Computer cooling system and computer cooling method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209676723U (en) * | 2018-10-17 | 2019-11-22 | 广州珐玛珈智能设备股份有限公司 | A kind of Electrical Box Cooling System |
| CN109831899A (en) * | 2019-03-29 | 2019-05-31 | 北京丰联奥睿科技有限公司 | A kind of liquid cooled server cabinet |
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