An explosion-proof electric cabinet for new energy energy supply

Abstract

The present invention belongs to the technical field of explosion-proof electrical cabinets, and specifically discloses an explosion-proof electrical cabinet for renewable energy energy supply, comprising: an explosion-proof electrical cabinet and an active cooling and fire extinguishing system, wherein the active cooling and fire extinguishing system comprises a centralized cooling and fire extinguishing unit, a confluence controller, a control module, multiple pressure pipes, and multiple temperature feedback devices, and multiple working components in the explosion-proof electrical cabinet are respectively provided with monitoring units; the invention has the following advantages: by providing a monitoring unit in the explosion-proof electrical cabinet, real-time monitoring of the electrical cabinet environment is achieved, especially under abnormal conditions such as high temperature, the active cooling and fire extinguishing system can respond quickly, automatically increase the amount of fire extinguishing material sprayed, and improve the fire extinguishing effect. The system integrates a passive pressure relief structure, an active explosion relief system, an inerting explosion suppression system, and a fine water mist automatic spray, providing multi-level safety protection to ensure the safety and stability of power distribution facilities, especially electrical cabinets and distribution boxes in new energy grid-connected systems, in complex environments.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof electric cabinets, and in particular to an explosion-proof electric cabinet for supplying energy using new energy sources. Background Art

[0002] With renewable energy generation units characterized by small capacity, large numbers, and dispersed locations, as well as significant intermittent, fluctuating, and random characteristics, power systems face increasing challenges in balancing power and ensuring safe and stable control. Especially in the context of large-scale development of renewable energy and high-proportion grid connection, the safety and security issues of traditional distribution boxes or cabinets are particularly prominent. Traditional distribution boxes or cabinets typically employ single ventilation or firefighting methods, which cannot fully meet the actual needs of use in complex environments. The explosion-proof structures of most traditional distribution cabinets lack automatic explosion-proof functions. Even if they have a certain degree of autonomous fire extinguishing and cooling capabilities, the fire extinguishing effect is significantly reduced when exposed to excessive temperatures, and they cannot provide continuous and effective safety assurance.

[0003] Therefore, an explosion-proof electric cabinet for renewable energy energy supply is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The present invention aims to provide an explosion-proof electrical cabinet for renewable energy energy supply, so as to solve or improve the above-mentioned technical problem that the explosion-proof and fire-extinguishing functions of traditional explosion-proof electrical cabinets are often ineffective at extreme temperatures and cannot meet actual needs.

[0005] In view of this, a first aspect of the present invention is to provide an explosion-proof electrical cabinet for renewable energy energy supply.

[0006] The first aspect of the present invention provides an explosion-proof electric cabinet for renewable energy power supply, comprising an explosion-proof electric cabinet and an active cooling and fire extinguishing system, wherein the active cooling and fire extinguishing system comprises a centralized cooling and fire extinguishing unit, a confluence controller, a control module, a plurality of pressure pipes and a plurality of temperature feedback devices, and a plurality of working components in the explosion-proof electric cabinet are respectively provided with monitoring units; the control module is respectively communicated with the centralized cooling and fire extinguishing unit and the plurality of the temperature feedback devices, the pressure pipe is used to connect the confluence controller with all the monitoring units, and the confluence controller is used to transfer the fire extinguishing material stored in the centralized cooling and fire extinguishing unit through the monitoring unit. The pressure pipeline is transported to the monitoring unit; the temperature feedback device includes a temperature sensor, and the temperature value obtained by the temperature feedback device includes a first temperature value of the working component collected by the monitoring unit when working and a second temperature value of the monitoring unit collected by the temperature sensor; the control module selects a fire alarm plan according to all the first temperature values ​​and the second temperature value, so as to adopt multiple degrees of action to reduce the internal temperature of the explosion-proof electric cabinet; the top of the inner cavity of the explosion-proof electric cabinet is provided with an explosion-proof plate that is activated according to the degree of action, and the explosion-proof plate is used to adjust the connection state between the explosion-proof electric cabinet and the external environment when the fire alarm plan is executed.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] By installing multiple monitoring units within explosion-proof electrical cabinets, the internal environment can be monitored in real time. In the event of abnormal conditions such as high temperatures, the active cooling and fire extinguishing system can quickly respond and initiate active cooling. Furthermore, as temperatures rise further, the system automatically increases the amount of fire extinguishing material discharged, enhancing both fire extinguishing effectiveness and system safety.

[0009] To ensure the safety of electrical cabinets in complex environments, the system integrates a passive pressure relief structure, an active explosion venting system, an inerting explosion suppression system, and a fine water mist fire sprinkler system. These functional modules provide multi-layered, comprehensive safety protection in various hazardous situations, minimizing accidents such as explosions and fires, ensuring the stability and safety of the power system. This system is particularly suitable for high-risk power distribution facilities, such as electrical cabinets and distribution boxes in renewable energy grid-connected power generation systems.

[0010] Additional aspects and advantages of embodiments according to the present invention will become apparent in the following description or may be learned through practice of embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0012] Figure 1This is a schematic diagram of the structure of the present invention after removing the explosion venting plate and the cylinder;

[0013] Figure 2 Schematic diagram of the explosion venting piece and its connection structure of the present invention;

[0014] Figure 3 This is a schematic diagram of the control module and its connection structure of the present invention;

[0015] Figure 4 This is a schematic diagram of the explosion-proof electric cabinet and its connection structure of the present invention.

[0016] in, Figures 1-4 The corresponding relationship between the reference numerals and component names is as follows:

[0017] 1. Explosion-proof electrical cabinet, 2. Centralized cooling and fire extinguishing unit, 3. Confluence controller, 4. Control module, 5. Pressure pipe, 6. Temperature feedback device, 7. Monitoring unit, 8. Fire extinguishing control valve, 9. Branch pipe, 10. Booster control valve, 11. Explosion vent disc, 12. High-pressure cylinder, 13. Detector, 14. Delivery pipeline. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0020] See also Figures 1-4 , the following describes an explosion-proof electrical cabinet for renewable energy power supply according to some embodiments of the present invention.

[0021] The embodiment of the first aspect of the present invention provides an explosion-proof electrical cabinet for renewable energy power supply. In some embodiments of the present invention, such as Figures 1-4 As shown, the explosion-proof electrical cabinet includes an explosion-proof electrical cabinet 1 and an active cooling and fire extinguishing system. The active cooling and fire extinguishing system includes a centralized cooling and fire extinguishing unit 2, a confluence controller 3, a control module 4, multiple pressure pipes 5 and multiple temperature feedback devices 6. Multiple working components in the explosion-proof electrical cabinet 1 are respectively provided with monitoring units 7.

[0022] The control module 4 is respectively communicated with the centralized cooling and fire extinguishing unit 2 and multiple temperature feedback devices 6. The temperature feedback device 6 is used to obtain the temperature value of the monitoring unit 7 when the explosion-proof electrical cabinet is configured to supply power to external equipment. The confluence controller 3 is installed at the bottom of the centralized cooling and fire extinguishing unit 2. The pressure pipe 5 is used to connect the confluence controller 3 with all the monitoring units 7. The confluence controller 3 is used to transport the fire extinguishing material stored in the centralized cooling and fire extinguishing unit 2 to the monitoring unit 7 through the pressure pipe 5.

[0023] The temperature feedback device includes a temperature sensor, and the temperature value obtained by the temperature feedback device includes a first temperature value of the working component collected by the monitoring unit when working and a second temperature value of the monitoring unit collected by the temperature sensor; the control module selects a fire alarm plan according to all the first temperature values ​​and the second temperature values, so as to reduce the internal temperature of the explosion-proof electric cabinet by adopting multiple action levels, and the action levels include temperature speed, fire extinguishing means and air pressure intensity; an explosion venting piece is provided on the top of the inner cavity of the explosion-proof electric cabinet, which is activated according to the action level, and the explosion venting piece is used to adjust the connection status between the explosion-proof electric cabinet and the external environment when the fire alarm plan is executed.

[0024] When the temperature value of the monitoring unit 7 collected by the temperature feedback device 6 exceeds the temperature threshold, the control module 4 controls the centralized cooling and fire extinguishing unit 2 to cool down, and the temperature threshold is set by the following formula:

[0025] T threshold =T ignition +k;

[0026] Among them, T threshold is the set temperature threshold, T ignition is the ignition temperature of the combustible material on the working part, and k is the safety factor.

[0027] A fire extinguishing control valve 8 is installed at one end of each pressure pipe 5 close to the explosion-proof electrical cabinet 1, and the other ends of all pressure pipes 5 are connected through a branch pipe 9, and a boost control valve 10 is installed on the branch pipe 9. The fire extinguishing control valve 8 and the boost control valve 10 are respectively communicated with the control module 4.

[0028] The present invention provides an explosion-proof electrical cabinet for renewable energy energy supply. The explosion-proof electrical cabinet 1 is used to accommodate and protect a variety of energy supply components and electrical elements. Its internal space is reasonably partitioned according to the operating requirements of different working parts, which can reduce the interference of the external environment on the internal temperature and airflow, and provide a relatively closed environment in the event of an emergency, which helps to centrally perform cooling and fire-fighting operations, thereby structurally ensuring the safe and stable operation of each internal component.

[0029] The active cooling and fire extinguishing system is configured inside the explosion-proof electrical cabinet 1. It is used to quickly intervene and perform effective cooling and suppression operations when the temperature rises abnormally or there is a potential combustion hazard. Its core is to achieve rapid response and precise cooling through the linkage of multiple functional units. It covers an integrated unit consisting of a centralized cooling and fire extinguishing unit 2, a convergence controller 3, a control module 4, multiple pressure pipes 5 and multiple temperature feedback devices 6. With the help of this system, the explosion-proof electrical cabinet 1 can execute fire and temperature control measures in a very short time when encountering local overheating, open flames or potential explosion risks, thereby improving the safety and controllability of the overall energy supply system.

[0030] The centralized cooling and fire extinguishing unit 2 in the present invention plays the role of providing fire extinguishing materials and cooling media for the entire cabinet, and internally stores the fire extinguishing or cooling substances required for new energy batteries or electrical components. Once a temperature abnormality is detected, the required materials can be quickly released under the instruction of the control module 4; since the unit is centrally configured and has sufficient volume, it can maintain continuous fire extinguishing and cooling effects for a long time or over a large area, so that the entire explosion-proof electrical cabinet 1 can obtain stable and effective cooling support in emergency situations.

[0031] The confluence controller 3 is arranged at the bottom of the centralized cooling and fire extinguishing unit 2. Its function is to efficiently and directionally transport the fire extinguishing materials in the centralized cooling and fire extinguishing unit 2 to the surrounding areas of each working component that needs cooling or fire extinguishing. The confluence controller 3 can reasonably allocate the flow and transportation path according to the instructions from the control module 4. When it is detected that the local temperature of a monitoring unit 7 is too high, the confluence controller 3 can perform fixed-point cooling, thereby avoiding indiscriminate spraying to cause waste of resources or reduced efficiency.

[0032] The control module 4 is respectively communicated with the centralized cooling and fire extinguishing unit 2 and multiple temperature feedback devices 6. Its function is to perform real-time analysis and judgment on the collected temperature information, and issue work instructions based on the comparison result between the temperature value and the predetermined temperature threshold; when the information transmitted by the temperature feedback device 6 shows that the temperature of a certain area or a certain working component has exceeded the allowable range, the control module 4 immediately triggers the centralized cooling and fire extinguishing unit 2 to extinguish the fire and cool down, and at the same time links the convergence controller 3 to control the delivery channel of the pressure pipeline 5 to ensure that the fire extinguishing material is accurately delivered to the part that needs cooling, thereby maximizing the fire extinguishing effect and reducing the temperature.

[0033] Multiple pressure pipes 5 are used to connect the convergence controller 3 and all monitoring units 7 in the explosion-proof electrical cabinet 1. Each pressure pipe 5 has a relatively independent delivery channel, which can reliably deliver the fire extinguishing materials of the centralized cooling and fire extinguishing unit 2 to the target location; under high pressure or instantaneous impact environment, the pressure pipe 5 can still maintain smooth and sealed, avoiding leakage, gas leakage or other forms of material loss, so that the entire cooling and fire extinguishing process remains efficient and safe, and once a pipe temporarily fails due to a fault, other pipes can still continue to maintain local or entire cabinet emergency cooling operations.

[0034] Multiple temperature feedback devices 6 are respectively arranged near each key monitoring unit 7 to accurately obtain the real-time temperature value of the location of the monitoring unit 7. The temperature feedback device 6 has high sensitivity and response speed, and can capture changes in time when the temperature suddenly rises, overloads or fluctuates abnormally and upload the data to the control module 4; in actual operation, the information transmitted by the temperature feedback device 6 is the core basis for the control module 4 to make judgments and operations. If the temperature in a certain area continues to rise, the control module 4 will decide whether to perform forced cooling or fire extinguishing operations based on the information, so as to avoid missing the best time to extinguish the fire.

[0035] The monitoring unit 7 is installed on multiple working parts in the explosion-proof electrical cabinet 1. The working parts also include but are not limited to battery modules, inverters or other key electrical components. The monitoring unit 7 is used to collect the heat generation status of the operating environment and the component surface in real time and transmit it to the temperature feedback device 6. When the working parts are at the load limit, insufficient heat dissipation or electrical failure causes severe heating, the precise detection of the monitoring unit 7 can enable the temperature feedback device 6 to quickly update the temperature information, thereby prompting the control module 4 to issue cooling or fire extinguishing instructions when necessary, thereby achieving targeted protection of local overheating areas.

[0036] The explosion-proof electrical cabinet 1 first provides a closed and orderly internal space, ensuring that the active cooling and fire extinguishing system can be triggered in time when the temperature exceeds the limit locally or overall; the existence of the centralized cooling and fire extinguishing unit 2 provides the system with continuous, stable and directionally deployable fire extinguishing materials and cooling resources, and cooperates with the convergence controller 3 to distribute resources to the monitoring unit 7 position where they are most needed, thereby achieving efficient space and resource management; the control module 4 quickly analyzes the data uploaded by the temperature feedback device 6 to decide when to start the release of fire extinguishing materials and the specific delivery volume and delivery path, and then coordinates the pressure pipeline 5 to complete differentiated fire extinguishing distribution; the temperature feedback device 6 and the monitoring unit 7 form a sophisticated sensing network, so that the thermal environment status of each working component can be grasped in real time. Once a temperature abnormality is detected, an alarm is immediately sent to the control module 4, thereby maintaining the safe operation of the entire system and greatly reducing the risk of fire and explosion. It can provide significantly enhanced safety performance for the energy supply system in renewable energy energy supply scenarios, especially realizing active explosion protection and cooling in extreme temperature or fire hazard conditions. It helps to cope with the safety and stability control challenges brought about by the intermittent, volatile and random nature of renewable energy power generation, and maintain the reliable and efficient operation of the energy supply system in an environment with a high proportion of grid connection.

[0037] The temperature feedback device includes a temperature sensor that accurately captures the internal temperature of the explosion-proof cabinet. The data collected by the temperature feedback device includes two key temperature values: a first temperature value, collected by the monitoring unit, of the working components under operating conditions; and a second temperature value, collected by the temperature sensor, of the monitoring unit itself. The first temperature value reflects the temperature conditions of the cabinet's working components under load, while the second temperature value provides temperature data for the monitoring unit itself, ensuring the system has a comprehensive understanding of the temperature distribution within the cabinet. This provides reliable data support for the control module, helping it select the appropriate fire alarm plan based on the current temperature conditions. The control module analyzes all collected first and second temperature values ​​and selects the most appropriate fire alarm plan based on temperature trends and their impact on the cabinet's interior. When executing the fire alarm plan, the system uses various action levels to reduce the cabinet's internal temperature, including the rate of temperature reduction, the use of fire extinguishing measures, and the adjustment of air pressure. These complementary measures ensure rapid and effective cooling of the cabinet's interior in the event of a fire or high-temperature risk.

[0038] When the fire alarm plan is executed, an explosion venting piece is provided on the top of the inner cavity of the explosion-proof electric cabinet, which is activated according to the degree of action. The explosion venting piece enables it to automatically respond when the air pressure inside the electric cabinet is too high, and releases the internal pressure or gas by adjusting the connection state between the explosion-proof electric cabinet and the external environment, thereby avoiding the occurrence of explosions or other safety accidents. The function of the explosion venting piece is activated as the fire alarm plan is executed. Its opening can effectively reduce the excessive temperature inside the electric cabinet, and maintain the stability and safety inside the explosion-proof electric cabinet by releasing internal pressure and gas. The explosion venting piece is located at the top of the explosion-proof electric cabinet to ensure that it can act quickly when the temperature exceeds the set threshold, preventing the electric cabinet from being damaged or failing due to overheating. Through the coordinated work of the temperature feedback device, the monitoring unit, the control module, and the explosion venting piece, the explosion-proof electric cabinet of the present invention can achieve effective temperature monitoring and control when high temperature and fire risks occur, ensuring that the system can still maintain stable operation under abnormal circumstances.

[0039] T ignition It is the minimum temperature threshold required for the combustible material on the working part to burn or thermal runaway, which is usually determined by the chemical properties, physical properties and environmental impact of the combustible material. In the new energy explosion-proof cabinet, the materials used in different components (such as battery internal electrolyte, plastic shell, protective coating, etc.) may have different thermal characteristics. Therefore, when determining T ignition When determining the temperature, it is necessary to comprehensively consider the actual thermal reactions of various materials under full load operation, partial overload or fault conditions; by mastering the ignition temperatures of these materials, it is possible to provide clear, reliable and practical basic data for the formulation of temperature thresholds. When the monitoring unit 7 detects that the temperature is continuously rising, the control module 4 compares the collected temperature value with T ignition For comparison, if the value is close to or exceeds T ignition , indicating that the combustible material on the working part has entered the potential combustion zone, and there is a high risk of combustion or explosion; if there is no additional safety margin at this time, once the system reaches the ignition temperature, irreversible combustion or thermal runaway will occur. ignition On this basis, by adding a safety factor k to increase the threshold, it can be ensured that the system can intervene in advance before the ignition temperature is actually reached, triggering active cooling and fire extinguishing operations.

[0040] The safety factor k is a flexible parameter in the temperature threshold formula. It is typically determined by the designer based on a comprehensive assessment of the actual operating environment, manufacturer's safety standards, sensor error range, material aging, and other safety assessment factors. The presence of k provides a "lead time" between the system's perceived temperature change and the actual risk, ensuring that optimal cooling or fire extinguishing opportunities are not missed due to measurement errors or unexpected events. Due to the variable environmental and load conditions of new energy explosion-proof cabinets, and the potential for measurement deviations in the temperature feedback device 6, the value of k should be neither too small nor too large. If k is too small, the system may miss the optimal intervention opportunity when the actual temperature is slightly higher than the measured value. If k is too large, cooling and fire extinguishing operations may be frequently triggered, resulting in wasted system resources and reduced operational efficiency. The safety factor k can also be dynamically adjusted based on actual operating conditions during later use. For example, if the system detects a high frequency of faults or temperature anomalies over a certain period, k can be temporarily increased to enable earlier risk intervention. Conversely, if the system is operating stably and extreme temperature fluctuations are rare, the value of k can be appropriately reduced to provide a wider operating temperature range.

[0041] T threshold As the key "threshold value" of the entire explosion-proof and safety control system, once the real-time temperature detected by the monitoring unit 7 and the temperature feedback device 6 exceeds the threshold, the control module 4 will be immediately triggered to intervene, including but not limited to starting the centralized cooling and fire extinguishing unit 2, adjusting the discharge pipeline of the convergence controller 3, opening or increasing the delivery rate of the pressure pipeline 5, etc. The use of an active intervention mechanism ensures that when the working parts have not yet reached the exact combustion or explosion temperature, the temperature can be effectively suppressed and lowered by accurately injecting fire extinguishing materials, coolants or other suppression media, thereby fundamentally reducing the probability of accidents. When the temperature exceeds T threshold Afterwards, control module 4 issues a work instruction to centralized cooling and fire-extinguishing unit 2, which then distributes its internal fire-extinguishing material or coolant reserves to confluence controller 3. Upon receiving the instruction from control module 4, confluence controller 3 adjusts the material output channel based on the overheating location and degree, and delivers the fire-extinguishing material or coolant to the vicinity of the overheating monitoring unit 7 via pressure pipe 5, achieving rapid cooling. Temperature feedback device 6 continuously transmits temperature change data back to control module 4. If the cooling measures are effective, control module 4 will stop or reduce the corresponding cooling operations when the temperature returns to below a safe value, to avoid excessive resource waste or unnecessary system fluctuations.

[0042] To make T threshold This parameter plays an effective role in actual operation. The monitoring unit 7 and the temperature feedback device 6 need to accurately capture and transmit the thermal conditions of the working parts at all times. When the real-time temperature value detected by the temperature feedback device 6 approaches or exceeds T thresholdSensitivity and accuracy also require the control module 4 to respond correctly and promptly to the collected information. Installed in the key area of ​​the working part, it collects temperature change data in real time, which can reflect the heating of the battery, inverter or other components due to overload, failure or environmental influence. As the execution end of the sensor, it receives the temperature signal from the monitoring unit 7, converts it into digital information that can be recognized by the control module 4 and sends it regularly or in real time. Continuously compare the data uploaded by the temperature feedback device 6 with the T threshold Once the temperature reaches or exceeds T threshold , the startup process of the centralized cooling and fire extinguishing unit 2 is executed; if the temperature subsequently drops back to the safe range, the fire extinguishing and cooling efforts are stopped or adjusted in time to avoid unnecessary consumption of resources.

[0043] The pressure pipe 5 is responsible for transporting fire extinguishing materials or cooling media in the explosion-proof new energy-powered explosion-proof electrical cabinet of the present invention. One end of the pressure pipe 5 is connected to the confluence controller 3 or the centralized cooling fire extinguishing unit 2 for receiving and transporting fire extinguishing or cooling media, and the other end extends to the vicinity of different monitoring units 7 inside the explosion-proof electrical cabinet 1 to ensure that the fire extinguishing materials can be quickly and accurately transported to the target location when local temperature anomalies or fire occur. In order to improve the protection level and response speed, a fire extinguishing control valve 8 is installed at the end of each pressure pipe 5 near the explosion-proof electrical cabinet 1, so that the pipe can be opened or closed individually according to actual needs, thereby avoiding indiscriminate spraying of the entire system, resulting in waste of resources or reduced fire extinguishing efficiency.

[0044] The function of the fire extinguishing control valve 8 is to control the amount and timing of local release of fire extinguishing material. When the control module 4 receives an alarm from the temperature feedback device 6 and detects that the temperature value of a monitoring unit 7 exceeds the threshold, it sends a valve opening command to the fire extinguishing control valve 8 in the corresponding pipeline, instantly opening the delivery channel for the fire extinguishing material. This allows the fire extinguishing material containing inhibitors or cooling media to reach the fire point or high-temperature area in a very short time, achieving the purpose of timely suppressing the fire or rapidly reducing the temperature. The fire extinguishing control valve 8 has excellent pressure-resistant sealing performance, and can still open and close quickly and accurately even under high pressure. Its sensitivity and airtightness can be maintained through regular inspection and maintenance during long-term use.

[0045] At the same time, the other ends of all pressure pipes 5 are connected through branch pipes 9, forming a trunk-branch transmission network between the confluence controller 3 and the pipe ends. Fire extinguishing materials within the centralized cooling and fire extinguishing unit 2 are distributed sequentially to each branch pipe 9 via this network. If a fire or abnormal temperature occurs in any one or more areas within the explosion-proof electrical cabinet, the system can dispatch the corresponding branch pipes 9 to perform cooling and fire extinguishing operations individually or in parallel, greatly improving the flexibility of emergency response and maximizing the use of existing resources for precise handling.

[0046] To ensure adequate pressure and delivery efficiency when multiple lines are being used simultaneously or when transporting materials over long distances, a boost control valve 10 is installed on branch pipe 9. This boost control valve 10 communicates with control module 4. When control module 4 detects a severe fire or requires a high flow rate and high velocity of fire extinguishing material, it issues a command to boost control valve 10 to increase the flow pressure of the medium within branch pipe 9, ensuring timely and sufficient delivery of fire extinguishing material to the fire point or high-temperature monitoring unit 7. In non-emergency situations, boost control valve 10 maintains a relatively low pressure level to reduce energy consumption and wear on pipeline components, thereby balancing system reliability and cost-effectiveness.

[0047] Control module 4 communicates with the fire extinguishing control valve 8 and the boost control valve 10, respectively, playing a central role in decision-making and coordination. It obtains global or local temperature data from the temperature feedback device 6 and monitoring unit 7. Based on preset temperature thresholds and system operation strategies, it determines when to open the boost control valve 10 to increase the delivery pressure, or to open only the fire extinguishing control valve 8 in the corresponding area for targeted fire extinguishing and temperature reduction. Specifically, when the temperature feedback device 6 indicates that a local temperature is approaching or exceeding a set threshold, control module 4 first assesses whether the current system pressure is sufficient to extinguish the fire. If the required flow rate is low, only the fire extinguishing control valve 8 in the relevant pipeline will be opened. If the required flow rate is high or the temperature anomaly is widespread, control module 4 will simultaneously open the boost control valve 10 to ensure sufficient supply pressure, effectively suppress the fire, and rapidly reduce the system temperature. This differentiated control approach not only ensures efficient use of fire extinguishing materials but also effectively prevents the waste of overall system resources, reducing subsequent maintenance and replenishment costs.

[0048] In summary, by introducing an active cooling and fire extinguishing system into an explosion-proof electrical cabinet powered by explosion-proof new energy, and combining the linkage of a temperature feedback device 6, a control module 4, a fire extinguishing control valve 8, a boost control valve 10, and a centralized cooling and fire extinguishing unit 2, the problem of traditional explosion-proof electrical cabinets being unable to effectively cope with high temperatures and fire risks has been solved. By monitoring the temperature of the working components within the explosion-proof electrical cabinet 1 in real time and automatically triggering the cooling and fire extinguishing functions when the temperature exceeds a set threshold, the system can respond quickly and effectively prevent the occurrence or spread of fire, ensuring the safety and stability of the energy supply equipment. In addition, the coordination of the boost control valve 10 and the fire extinguishing control valve 8 enables the precise delivery of fire extinguishing materials to high-temperature areas, optimizing resource utilization and improving fire extinguishing efficiency.

[0049] Specifically, the temperature values ​​collected by the temperature feedback device 6 from the monitoring unit 7 include the first temperature value of the working component obtained by the monitoring unit 7 during operation and the second temperature value of the monitoring unit 7 itself obtained by the temperature feedback device 6. This ensures that different fire alarm plans are executed before and after the high-intensity centralized cooling and fire extinguishing unit 2 operation, regardless of whether the monitoring unit 7 is damaged or not, through remote identification and monitoring by the control module 4 via the temperature feedback device 6. The temperature feedback device may include a temperature sensor for obtaining a temperature value to collect the second temperature value of the monitoring unit.

[0050] From the above, it can be seen that by setting up a dual temperature monitoring mechanism in the explosion-proof electric cabinet powered by explosion-proof new energy, the reliability and safety of the system are significantly improved. Specifically, the temperature feedback device 6 not only collects the first temperature value of the working component obtained by the monitoring unit 7 during operation, but also obtains the second temperature value of the monitoring unit 7 itself. Dual temperature acquisition ensures that the system can fully and accurately grasp the temperature conditions of each key component in the explosion-proof electric cabinet before and after the high-intensity centralized cooling and fire extinguishing unit 2 operation. First, the monitoring unit 7 measures and transmits the temperature value of the working component in real time during operation to ensure that the thermal status of core components such as battery modules and inverters is monitored; at the same time, the temperature feedback device 6 independently measures the temperature of the monitoring unit 7 itself as an auxiliary verification of whether the monitoring unit 7 functions normally.

[0051] When the second temperature value detected by the temperature feedback device 6 rises abnormally, the system can identify the risk of damage or malfunction of the monitoring unit 7, thereby avoiding the temperature monitoring blind spot caused by the failure of the monitoring unit 7, so that the control module 4 can accurately judge the reliability of the temperature data by analyzing the consistency between the first and second temperature values, and then decide whether to activate the centralized cooling and fire extinguishing unit 2 and the specific fire extinguishing measures. If both the first and second temperature values ​​exceed the set temperature threshold, the control module 4 will immediately perform a high-intensity cooling and fire extinguishing operation to quickly suppress the spread of the fire; if only the first temperature value is abnormal and the second temperature value is normal, it indicates that the monitoring unit 7 itself is still working normally, and the system will flexibly adjust the cooling strategy according to the actual temperature situation; if the second temperature value is abnormal, it indicates that the monitoring unit 7 may fail, and the control module 4 will activate the backup fire alarm plan to ensure that even if the monitoring unit 7 is damaged, the overall system can still maintain effective monitoring and control of the internal temperature of the explosion-proof electrical cabinet through the data of the temperature feedback device 6. Through this multi-level, redundant temperature monitoring and feedback mechanism, the present invention not only enhances the emergency response capability of the energy supply explosion-proof cabinet in complex and dynamic environments, but also significantly improves the safety and stability of the overall system, ensuring that the new energy energy supply system can efficiently and reliably support the needs of power balance and safe and stable control in the context of high-proportion grid connection and large-scale development.

[0052] Furthermore, since the high-pressure material is used to extinguish the fire and reduce the temperature, and the explosion venting disc 11 is used to release the high pressure, the internal environment is unstable. Therefore, when the control module 4 receives the first temperature value and the second temperature value, the following situation occurs:

[0053] Scenario 1: Before the centralized cooling and fire extinguishing unit 2 performs fire extinguishing and cooling, the credibility priority of the first temperature value is higher than the credibility priority of the second temperature value.

[0054] Scenario 2: Within a period of time after the centralized cooling and fire extinguishing unit 2 performs fire extinguishing and cooling, the credibility priority of the second temperature value is higher than the credibility priority of the first temperature value.

[0055] As can be seen from the above, the priority relationship between the first and second temperature values ​​received by control module 4 effectively improves the safety and reliability of explosion-proof electrical cabinets powered by explosion-proof renewable energy. Specifically, control module 4 assigns different priorities to the credibility of temperature values ​​in different scenarios, thereby achieving dynamic optimization management of the system.

[0056] Regarding scenario 1, before the centralized cooling and fire-extinguishing unit 2 is activated to perform fire extinguishing and cooling operations, the control module 4 prioritizes the credibility of the first temperature value over the second temperature value. The first temperature value is derived from actual operating temperature data of working components acquired by the monitoring unit 7 and directly reflects the true operating status of core components (such as battery modules and inverters) within the explosion-proof electrical cabinet. Therefore, in this scenario, the control module 4 primarily relies on the first temperature value to determine whether to activate the cooling and fire-extinguishing system, ensuring that measures can be taken quickly and accurately in the event of an abnormal temperature rise to prevent fire or thermal runaway. The monitoring unit 7 collects temperature data of working components in real time and transmits this data to the control module 4 via the temperature feedback device 6. After receiving the highly reliable first temperature value, the control module 4 performs real-time analysis and judgment. Because the first temperature value directly reflects the temperature status of core components, the control module 4 immediately activates the centralized cooling and fire-extinguishing unit 2 upon receiving the first temperature value exceeding the set temperature threshold. It then delivers fire extinguishing materials or cooling medium to the high-temperature area via the pressure pipe 5, rapidly reducing the temperature and suppressing the spread of the fire. In scenario 1, the control module 4 makes decisions based only on the first temperature value, ensuring that firefighting resources are concentrated where they are most needed, avoiding unnecessary waste of resources, and improving firefighting efficiency and response speed.

[0057] Within a period of time after the centralized cooling and fire extinguishing unit 2 performs the fire extinguishing and cooling operation, the control module 4 adjusts the credibility priority of the temperature value and increases the credibility of the second temperature value to be higher than the first temperature value. The second temperature value comes from the temperature data of the monitoring unit 7 itself obtained by the temperature feedback device 6, which is intended to ensure the functional integrity and working status of the monitoring unit 7. This not only verifies whether the monitoring unit 7 maintains normal operation during or after the cooling and fire extinguishing process, but also promptly discovers possible damage or functional failure problems of the monitoring unit 7. The temperature feedback device 6 independently collects the temperature data of the monitoring unit 7 itself and transmits it to the control module 4. After the centralized cooling and fire extinguishing unit 2 completes the initial cooling, the control module 4 focuses on the second temperature value to ensure that the monitoring unit 7 is not damaged due to high temperature or other factors during the cooling process. In scenario two, the increased priority of the second temperature value enables the control module 4 to more effectively monitor the status of the monitoring unit 7. If the second temperature value is not abnormal, it means that the monitoring unit 7 functions normally and the system can continue to maintain a normal monitoring state; if the second temperature value rises abnormally, it indicates that the monitoring unit 7 may be damaged, and the control module 4 needs to immediately start the backup fire alarm plan, such as activating the backup monitoring system or manually intervening in the cooling and fire extinguishing operation to ensure the continued safe operation of the entire system. By adjusting the credibility priority of the temperature value at different operation stages, the present invention achieves dual protection for the monitoring unit 7. Scenario 1 ensures that the temperature of the core components is effectively controlled, and scenario 2 ensures the reliability of the monitoring system itself, avoiding the temperature monitoring blind spot caused by the failure of the monitoring unit 7, and further improving the overall safety and stability of the explosion-proof electrical cabinet.

[0058] Furthermore, each monitoring unit 7 is independently allocated a temperature feedback device 6, and the body of each monitoring unit 7 and the corresponding temperature feedback device 6 are respectively connected to the control module 4 through a packaging pipe to transmit data and isolate the environment.

[0059] As can be seen from the above, each monitoring unit 7 is independently equipped with a temperature feedback device 6, which is intended to monitor the temperature of each key working component in the explosion-proof electrical cabinet in real time. The temperature feedback device 6 has high sensitivity and rapid response capabilities, and can accurately capture the temperature changes of the working components under different operating conditions. This independent allocation ensures that the temperature data of each monitoring unit 7 is not affected by other monitoring units 7, thereby improving the accuracy and reliability of the data. The independent temperature feedback device 6 can monitor the temperature of each monitoring unit 7 to ensure timely detection and response to temperature anomalies. Each temperature feedback device 6 works independently, avoiding data cross-interference and ensuring the independence and accuracy of the temperature data of each monitoring unit 7. The independent temperature feedback device 6 increases the redundancy of the system. Even if a feedback device fails, the other feedback devices can still work normally to ensure the continuous monitoring capability of the overall system.

[0060] The main body of each monitoring unit 7 and its corresponding temperature feedback device 6 are connected to the control module 4 through a packaging pipe. This connection method is not only used for the transmission of temperature data, but also plays a role in environmental isolation. The packaging pipe is usually made of high-quality sealing materials, which can effectively prevent the influence of external environmental factors (such as dust, moisture, chemicals, etc.) on the temperature feedback device 6 and the monitoring unit 7, while ensuring the stability and security of data transmission. As a channel for data transmission, the packaging pipe ensures that the temperature data collected by the temperature feedback device 6 can be accurately and timely transmitted to the control module 4 for system analysis and decision-making. The temperature feedback device 6 is isolated from the external environment by the packaging pipe, preventing environmental factors from interfering with the temperature feedback device 6, extending the service life of the equipment, and improving the stability of the system. The packaging pipe not only protects the temperature feedback device 6 from physical damage, but also prevents liquid or gas leakage, ensuring the reliable operation of the system in harsh environments.

[0061] Data transmission within the encapsulated pipeline usually uses digital signals or encoded analog signals to ensure that the data is not tampered with or lost during transmission. After the control module 4 receives the data from each temperature feedback device 6, it uses advanced data processing algorithms to perform real-time analysis and evaluation of the temperature data to determine whether there are temperature anomalies or potential safety hazards. The control module 4 performs real-time analysis on the transmitted temperature data and promptly identifies any temperature anomalies that exceed the set threshold. Based on the analysis results of the temperature data, the control module 4 can make accurate decisions, such as starting the cooling and fire extinguishing system, adjusting the cooling strategy, or triggering the alarm mechanism to ensure the safe operation of the system. The control module 4 can dynamically adjust the temperature threshold and cooling and fire extinguishing strategy according to changes in temperature data to optimize the response speed and efficiency of the system.

[0062] Furthermore, the control module executes different fire alarm plans, and determines the comprehensive total credibility generated by all temperature values ​​currently collected by the explosion-proof electrical cabinet, and the comprehensive total credibility is obtained by the following formula:

[0063]

[0064] in, is the temperature correction factor; is the overall credibility; is the importance of the i-th working component in the explosion-proof electrical cabinet; is the number of monitoring units; Perform regional factoring for the temperature data of the i-th monitoring unit; There may be interaction effects between different temperature data.

[0065] Specifically, In order to consider the interaction effects between different detection units, the control module will further adjust the current credibility of each monitoring unit:

[0066]

[0067] in, is the reliability of detection unit i in its initial state. Its calculation method has been given and mainly depends on the temperature value collected by a single sensor, temperature threshold correction, sensor stability and environmental factors; Indicates the degree of interaction between detection unit i and detection unit j. This coefficient is based on factors such as the physical distance between the two sensors, the similarity of their working environments, and their measurement areas. It is a coefficient less than 1 and typically ranges from 0 to 1.

[0068] Specifically, the initial credibility The calculation formula is as follows:

[0069]

[0070] in, The credibility function corresponding to the first temperature value is a function of the difference between the temperature value and the temperature threshold, and is usually a decreasing function. As the temperature increases, the credibility decreases; is a credibility function corresponding to the second temperature value, used to represent the credibility of the second temperature value; Time decay factor of monitoring unit i. As time goes by, the reliability of the sensor will decrease; is the sensor stability factor of monitoring unit i. If the sensor has higher stability (e.g., less error and drift), this factor value is larger; It is the temperature correction coefficient, which is mainly used to adjust the error caused by sensor accuracy differences or external environmental influences.

[0071] Specifically, the temperature correction factor The calculation formula is as follows:

[0072]

[0073] in, The currently measured temperature value may be the first temperature value or the second temperature value; The temperature threshold is the temperature at which an alarm is triggered or cooling / extinguishing operations are initiated. It is usually set based on the safe temperature range of the equipment. This represents the corrected reliability coefficient. The closer the temperature is to the threshold, the smaller the correction value. When the temperature exceeds the threshold, the correction value drops significantly, indicating that the sensor's reliability is low under these conditions.

[0074] Furthermore, the selection rules for the fire alarm plan are:

[0075] High risk status: When If the value is less than a certain low threshold (for example, 0.3), the system is considered to have a high fire risk, and the control module will execute fire alarm plan A.

[0076] Medium risk status: Between the low and high thresholds (e.g., 0.3 ≤ ≤0.7), the system is considered to be in a relatively controllable risk state, and the control module will execute fire alarm plan B.

[0077] Low risk status: When Greater than a set high threshold (e.g. >0.7), the system is considered to be in normal state, and the control module will execute fire alarm plan C.

[0078] Specifically, the fire emergency plan includes:

[0079] Fire Alarm Plan A, emergency response in high-risk situations: activate the active fire extinguishing cooling system to quickly spray fire extinguishing materials or start the cooling cycle; activate the fine water mist fire automatic sprinkler system to cool the entire electrical cabinet; activate the passive pressure relief structure to automatically release the pressure in the cabinet to prevent explosion; activate the active explosion relief system to trigger the explosion relief disc to ensure the overall safety of the system.

[0080] Fire Alarm Plan B, risk monitoring and intervention in medium-risk situations: Activate the monitoring system to continuously monitor temperature changes inside the electrical cabinet and dynamically adjust cooling and fire extinguishing strategies; activate the inerting explosion suppression system to release suppression gas to reduce fire risk; based on the system status, the control module can automatically adjust the amount of cooling and fire extinguishing materials sprayed.

[0081] Fire Alarm Plan C, routine monitoring under low-risk conditions: Continuously monitor the temperature in real time and operate other functions of the explosion-proof electrical cabinet normally; when the high temperature or fire risk increases again, the control module will automatically switch to Plan A or B in real time.

[0082] In any of the above embodiments, the fire extinguishing material includes N2+perfluorohexanone, and the use of N2+perfluorohexanone can achieve a good cooling and fire extinguishing effect.

[0083] In this embodiment, the fire extinguishing material used includes N2 + perfluorohexanone, which can fully exert its cooling and fire extinguishing functions in high-temperature environments. As a component of the fire extinguishing material, N2 + perfluorohexanone can effectively reduce the temperature inside the explosion-proof electrical cabinet by cooling and suppressing the combustion reaction when the temperature is too high or a fire occurs, thereby quickly extinguishing the fire and preventing the spread of the fire. Specifically, N2 + perfluorohexanone is released through the high-pressure pipes and spraying devices inside the explosion-proof electrical cabinet, and can quickly cover the working parts with excessive temperatures monitored by the temperature feedback device 6. In particular, when the temperature reaches the set threshold, the spraying of the fire extinguishing material will directly contact the fire source, thereby reducing the temperature and suppressing the fire.

[0084] During the cooling process, the N2+perfluorohexanone solution first lowers the temperature inside the explosion-proof electrical cabinet 1 by absorbing ambient heat. Its high heat absorption capacity allows the entire system to quickly enter a safe state. Furthermore, perfluorohexanone itself possesses high chemical stability and does not react with other chemical components within the explosion-proof electrical cabinet. Therefore, it ensures effective fire extinguishing while avoiding secondary damage to the cabinet system and equipment. Furthermore, the combination of N2 and perfluorohexanone enhances the gas diffusion and coverage of the fire extinguishing material. The addition of N2 not only further dilutes the oxygen concentration in the environment, suppressing the combustion reaction, but also enhances the gas diffusion effect of perfluorohexanone during the fire extinguishing process, resulting in a wider and more uniform fire extinguishing coverage.

[0085] In any of the above embodiments, an explosion-proof venting piece 11 is provided on the top of the inner cavity of the explosion-proof electric cabinet 1 , and the explosion-proof venting piece 11 is used to automatically release pressure when the pressure inside the explosion-proof electric cabinet 1 is too high.

[0086] In this embodiment, the explosion venting disc 11 functions through its highly precise pressure-triggered mechanism. When the air pressure inside the explosion-proof cabinet reaches a preset critical value, the disc 11 will crack or rupture at its top as designed, rapidly releasing accumulated gas and reducing the pressure within the cabinet 1, thereby alleviating the impact of the pressure within the cabinet 1 on the structure. The opening speed and pressure threshold of the explosion venting disc 11 are precisely controlled to ensure that it will function when the pressure in the cabinet 1 is too high, potentially posing a danger, while preventing malfunction during normal operation, thus ensuring that the cabinet 1 remains safely operational without being disturbed.

[0087] The provision of explosion-proof venting disc 11 complements the overall safety system of the explosion-proof electrical cabinet, further enhancing the cabinet's comprehensive explosion-proof, temperature-reducing, and fire-extinguishing capabilities. In particular, if the temperature feedback device 6 detects an abnormally high temperature rise within the working components or the cabinet, causing gas expansion or excessive pressure, the autonomous pressure-relieving function of the explosion-proof disc 11 will work in conjunction with the active temperature-reduction and fire-extinguishing system to minimize pressure and slow temperature rise, thereby preventing explosions or fires caused by excessive internal pressure or overheating. Furthermore, the provision of explosion-proof venting disc 11 provides stronger safety protection for the cabinet's other protective devices (such as the spraying of fire-extinguishing materials and the operation of the temperature feedback device 6), ensuring that these systems function properly within a reasonable pressure range and preventing equipment damage or functional failure due to excessive pressure.

[0088] Furthermore, the explosion venting disc 11 may be a valve body structure that passes through the explosion-proof electric cabinet 1 or a disposable structure that is destroyed under a certain pressure to expose the explosion-proof electric cabinet 1 .

[0089] As can be seen from the above, the explosion venting piece 11 can have the following structure:

[0090] A valve-type explosion vent disc 11 is integrated into the valve assembly. When internal pressure exceeds a threshold, the disc 11 ruptures instantly, releasing the excess gas or heat. Designed for single use, the rupture creates a channel that allows the gas or heat to escape safely.

[0091] The pressure relief plate, typically a thin film or metal sheet, ruptures when the pressure inside the explosion-proof electrical cabinet exceeds a set threshold, rapidly releasing the internal pressure. While simple and economical, it requires replacement once ruptured.

[0092] The multi-layer composite explosion venting plate 11 is composed of different materials stacked together, wherein the outer layer is a solid metal layer used to withstand normal working pressure, and the inner layer is a thinner material. When the pressure is too high, the inner layer will rupture first to ensure safe release.

[0093] The spring-assisted explosion-proof plate 11 combines a spring device and the explosion-proof plate 11. When the pressure is too high, the explosion-proof plate 11 will quickly rupture through the auxiliary force of the spring, releasing internal gas or heat, which can enhance the reaction speed of the explosion-proof plate 11.

[0094] The electronic explosion venting piece 11 is combined with an electronic sensor. When the temperature or pressure of the explosion venting piece 11 reaches a predetermined threshold, the sensor triggers the circuit to start the blasting operation. It can work under more precise conditions and avoid misoperation or delayed response.

[0095] In any of the above embodiments, the inner cavity of the explosion-proof electrical cabinet 1 is further provided with at least one active explosion relief system that enables the staff to actively control the pressure relief of the explosion relief plate 11 .

[0096] The active explosion relief system includes a high-pressure steel cylinder 12, a detector 13 and a delivery pipe 14. The detector 13 is installed inside the explosion-proof electric cabinet 1, and the high-pressure steel cylinder 12 is arranged on the outer wall of the explosion-proof electric cabinet 1. One end of the delivery pipe 14 is connected to the high-pressure steel cylinder 12, and the other end of the delivery pipe 14 extends to the inner cavity of the explosion-proof electric cabinet 1. The detector 13 is communicated with the control module 4, and the control module 4 is communicated with the control circuit of the high-pressure steel cylinder 12.

[0097] In this embodiment, the interior of the explosion-proof electrical cabinet 1 is also equipped with at least one active explosion-relief system, enabling personnel to actively control the pressure relief of the explosion-relief discs 11. This enhances the safety and controllability of the explosion-proof cabinet in the event of abnormally high pressure. This active explosion-relief system not only automatically relieves pressure when air pressure reaches dangerous levels, but also allows personnel to remotely control the pressure relief operation, thereby more precisely controlling the pressure state within the explosion-proof electrical cabinet 1 and preventing the risk of explosion due to unexpected circumstances. The system includes a high-pressure cylinder 12, a detector 13, a delivery pipeline 14, and an electronic system that communicates with the control module 4. These components work together to achieve efficient and controllable pressure relief.

[0098] High-pressure cylinder 12, mounted on the exterior of explosion-proof electrical cabinet 1, serves as a reservoir for pressure-release gas. It possesses high pressure resistance and can deliver gas to the interior of explosion-proof electrical cabinet 1 via delivery pipe 14 when needed. High-pressure cylinder 12 is filled with gas at a predetermined pressure. When pressure within explosion-proof electrical cabinet 1 becomes excessive, it applies appropriate pressure to the interior via delivery pipe 14, forcing rupture of explosion-relief disc 11 and initiating the pressure relief process. The precise placement of high-pressure cylinder 12 ensures rapid and effective gas release for pressure control when necessary, while minimizing internal cabinet space.

[0099] The detector 13 is installed inside the explosion-proof electrical cabinet 1. Its main function is to monitor the changes in the air pressure inside the explosion-proof electrical cabinet in real time and accurately capture any signs of abnormal pressure. Once the air pressure inside the explosion-proof electrical cabinet exceeds the preset safety range, the detector 13 immediately reports this information to the control module 4 through signal transmission, triggering the control module 4 to start the corresponding operating procedure. As the "brain" of the active explosion relief system, the control module 4 is connected to the control circuit of the high-pressure steel cylinder 12 through communication. After receiving the signal from the detector 13, it can execute the pressure relief instruction and control the gas to be transported from the high-pressure steel cylinder 12 to the inner cavity of the explosion-proof electrical cabinet 1 through the delivery pipe 14, thereby effectively reducing the air pressure in the inner cavity and preventing the explosion of the explosion-proof electrical cabinet 1 due to excessive pressure.

[0100] Delivery pipe 14 rapidly delivers gas from high-pressure cylinder 12 to the interior of explosion-proof electrical cabinet 1. When the other end of the pipe is connected to the interior of the explosion-proof electrical cabinet, precise regulation of the delivered gas volume and pressure ensures that pressure is released to a safe level within the shortest possible time. Delivery pipe 14 not only transports gas but also evenly distributes it to specific areas within explosion-proof electrical cabinet 1, allowing explosion vent disc 11 to rupture promptly under high pressure, achieving effective pressure relief.

[0101] Furthermore, the detector 13 includes a pressure detector 13 .

[0102] In this embodiment, the function of the pressure detector 13 is to provide real-time feedback on the pressure information inside the explosion-proof electrical cabinet, and to monitor even the slightest changes in air pressure, thereby providing accurate pressure data to the control module 4. When the air pressure inside the explosion-proof electrical cabinet 1 rises abnormally, the pressure detector 13 will issue an alarm signal, triggering the response mechanism of the control module 4. After receiving the signal from the pressure detector 13, the control module 4 will immediately decide whether to activate the active explosion relief system based on the preset pressure threshold, so as to release the excessive air pressure in time to prevent the explosion-proof electrical cabinet 1 from rupturing, exploding, or other dangerous situations. The high precision and sensitivity of the pressure detector 13 enable the active explosion relief system to be activated in a timely manner at the early stage of air pressure anomalies, avoiding delays or errors.

[0103] Furthermore, the detector 13 also includes a temperature detector 13 .

[0104] In this embodiment, the temperature detector 13 accurately provides feedback on the internal temperature of the explosion-proof electrical cabinet 1. When the temperature inside the cabinet exceeds a safety threshold, the temperature detector 13 immediately detects this change and transmits the temperature data via a communication connection with the control module 4. Based on this received temperature information, the control module 4 determines whether the current temperature is approaching or exceeding the temperature limit of the working components, thereby deciding whether to activate the centralized cooling and fire extinguishing unit 2. The high sensitivity of the temperature detector 13 enables the system to identify abnormalities at an early stage of temperature rise, allowing timely measures to prevent fires or equipment damage caused by excessive temperatures.

[0105] In any of the above embodiments, the end of the delivery pipe 14 located in the inner cavity of the explosion-proof electrical cabinet 1 faces the explosion-proof disc 11 .

[0106] In this embodiment, gas is transported from the high-pressure steel cylinder 12 to the explosion-proof plate 11 area in the inner cavity of the explosion-proof electric cabinet. In the entire active explosion-proofing system, the provision of the delivery pipe 14 is not only a physical channel connecting the various core components, but also a key structure to ensure the efficient response and safe pressure release of the explosion-proofing system. Specifically, this end of the delivery pipe 14 is precisely facing the explosion-proof plate 11, and the gas from the high-pressure steel cylinder 12 is quickly and efficiently transported to the interior of the explosion-proof electric cabinet 1 through the internal channel. When the pressure in the inner cavity of the explosion-proof electric cabinet 1 reaches a critical value, the pressure detector 13 and the temperature detector 13 work together, and the sensing data is transmitted to the control module 4. Subsequently, the control module 4 issues a command to start the high-pressure steel cylinder 12 and deliver gas to the explosion-proof plate 11 area through the delivery pipe 14.

[0107] In any of the above embodiments, in a set of active explosion relief systems, the explosion suppression material inside the high-pressure cylinder 12 is a mixture of one or more of water-based explosion suppression, carbon dioxide, heptafluoropropane, sodium bicarbonate, ammonium dihydrogen phosphate, and perfluorohexanone.

[0108] In this embodiment, within an active explosion venting system, the explosion suppression material within the high-pressure cylinder 12 can be a mixture of one or more of water-based explosion suppression, carbon dioxide, heptafluoropropane, sodium bicarbonate, ammonium dihydrogen phosphate, and perfluorohexanone. Each explosion suppression material has unique physical and chemical properties, enabling it to achieve different cooling, suppression, and extinguishing effects in different fire and high-temperature environments, thereby enhancing the system's multi-faceted response capabilities to sudden fires or high temperatures. Specifically, water-based explosion suppression materials reduce temperature by absorbing heat through evaporation, rapidly lowering the temperature of the fire source and reducing the spread of fire; carbon dioxide suppresses the oxygen necessary for fire combustion through suffocation, rapidly reducing the temperature and oxygen concentration of the fire source, and achieving the effect of extinguishing the fire; heptafluoropropane is a colorless, odorless gas that can absorb heat through rapid evaporation when a fire occurs, reducing the temperature of the fire source, and has less harm to the environment and personnel, so it is widely used in fire extinguishing of sensitive equipment; sodium bicarbonate and ammonium dihydrogen phosphate rapidly decompose through chemical reactions, releasing gas, forming a physical barrier to suppress flames and reduce the heat of the fire source; perfluorohexanone, as a gas fire extinguishing agent, has strong fire suppression properties, can effectively extinguish fires through mechanisms such as absorbing heat and isolating oxygen, and has less impact on equipment and the environment.

[0109] The combined use of these explosion suppression materials can complement each other's strengths, increasing the diversity and comprehensiveness of fire extinguishing and cooling effects. For example, combining water-based explosion suppression materials with carbon dioxide can simultaneously achieve cooling and suffocating effects, enhancing fire extinguishing efficiency. A mixture of perfluorohexanone and heptafluoropropane can significantly reduce the temperature within the explosion-proof electrical cabinet in a very short period of time, while also avoiding the potential corrosion and damage to electronic equipment caused by traditional gaseous fire extinguishing agents. Therefore, the combined use of explosion suppression materials allows for flexible adjustment of fire extinguishing strategies based on the type and nature of fires, maximizing the safe operation of explosion-proof electrical cabinets.

[0110] In any of the above embodiments, a fine water mist fire automatic sprinkler system is provided in the explosion-proof electrical cabinet 1 . The fine water mist fire automatic sprinkler system includes a fire-fighting pipe, which is provided above the inner cavity of the explosion-proof electrical cabinet 1 .

[0111] In this embodiment, the water mist firefighting system operates based on a pre-stored water source in pipes. When a fire breaks out or the system detects a temperature anomaly, it uses pressure control to deliver water through the firefighting pipes to multiple sprinkler heads within the explosion-proof electrical cabinet 1. These sprinkler heads are designed to finely atomize water droplets, ensuring that the sprayed water mist instantly forms tiny droplets. Upon contact with the fire source, these droplets rapidly reduce the fire source's temperature by absorbing heat and isolating oxygen, cutting off the oxygen required for combustion. The atomization effect of the water mist ensures wide fire extinguishing coverage and effectively targets all areas of the fire source, preventing further spread.

[0112] In any of the above embodiments, the fine water mist fire automatic sprinkler system further includes a fire sprinkler head, which is arranged on the fire pipe.

[0113] In this embodiment, each fire sprinkler head is installed on a fire protection pipe and is activated by the water pressure within the pipe. When the temperature detector 13 or the pressure detector 13 detects a fire signal, the control module 4 activates the water flow within the fire protection pipe, delivering water to each sprinkler head. The sprinkler head is typically turned on and off by a temperature-sensitive device. For example, when the ambient temperature reaches a preset high temperature, the temperature control element within the sprinkler head senses the temperature change and automatically activates the sprinkler function.

[0114] In any of the above embodiments, the temperature sensor and the monitoring unit of the temperature feedback device are fixed to the inner wall of the explosion-proof electric cabinet through a cylinder, and the port of the cylinder is connected to the inner cavity of the explosion-proof electric cabinet. The inner cavity of the cylinder can accommodate the temperature sensor and the monitoring unit to avoid being impacted when the pressure changes rapidly due to a sudden drop in temperature inside the explosion-proof electric cabinet.

[0115] The detection end of the monitoring unit passes through the inner wall of the cylinder and is fixed on the outer wall of the working part to continuously detect the temperature of the working part. The detection end of the temperature sensor is located on the body of the monitoring unit to detect the second temperature value of the body of the monitoring unit. The port of the cylinder is separated from the fire sprinkler head to avoid the water sprayed from the fire sprinkler head contacting the detection end of the temperature sensor, causing detection errors, so as to correctly reflect the real-time status of the explosion-proof electrical cabinet through the second temperature value.

[0116] In this embodiment, the end of the barrel communicates with the interior of the explosion-proof electrical cabinet. The temperature sensor and monitoring unit of the temperature feedback device are securely attached to the inner wall of the explosion-proof electrical cabinet via the barrel. This protects the temperature sensor and monitoring unit from shocks caused by pressure fluctuations in the internal chamber during sudden temperature changes or sharp drops within the explosion-proof electrical cabinet. The interior of the barrel ensures stable operation of the temperature sensor, preventing damage or performance fluctuations caused by sudden high or low temperature fluctuations, thereby ensuring long-term reliability and accuracy. The end of the barrel is oriented away from the direction of the fire sprinkler head, preventing direct contact between the sprayed water mist or fire extinguishing agent and the detection end of the temperature sensor during fire alarm execution, thus avoiding measurement errors caused by direct contact between the sprayed water mist or fire extinguishing agent. This effectively ensures that the temperature sensor accurately reflects the real-time temperature status of the explosion-proof electrical cabinet during actual firefighting, avoiding unnecessary interference or misjudgment, and ensuring that the monitoring unit provides stable and reliable temperature data for the control module to assess.

[0117] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0118] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An explosion-proof electric cabinet for new energy power supply, characterized in that: It includes an explosion-proof electrical cabinet and an active cooling and fire extinguishing system. The active cooling and fire extinguishing system includes a centralized cooling and fire extinguishing unit, a confluence controller, a control module, multiple pressure pipes and multiple temperature feedback devices. Multiple working components in the explosion-proof electrical cabinet are respectively provided with monitoring units; The control module is respectively connected to the centralized cooling and fire extinguishing unit and the plurality of temperature feedback devices in communication, the pressure pipe is used to connect the confluence controller with all the monitoring units, and the confluence controller is used to transport the fire extinguishing material stored in the centralized cooling and fire extinguishing unit to the monitoring unit through the pressure pipe; The temperature feedback device includes a temperature sensor, and the temperature value obtained by the temperature feedback device includes a first temperature value of the working component collected by the monitoring unit when the working component is working and a second temperature value of the monitoring unit collected by the temperature sensor; The control module selects a fire alarm plan based on all the first temperature values ​​and the second temperature values ​​to reduce the internal temperature of the explosion-proof electrical cabinet using multiple levels of action; The top of the inner cavity of the explosion-proof electrical cabinet is provided with an explosion venting piece which is activated according to the degree of action, and the explosion venting piece is used to adjust the connection state between the explosion-proof electrical cabinet and the external environment when the fire alarm plan is executed; The first temperature value is used to reflect the temperature condition of each working component under load conditions, and the second temperature value is used to reflect the temperature condition of the monitoring unit itself. Since the internal environment of the explosion-proof electrical cabinet is unstable due to the use of high-pressure material fire extinguishing cooling means and the use of explosion venting discs to release high pressure, the control module has the following situations when receiving the first temperature value and the second temperature value: Scenario 1: Before the centralized cooling and fire extinguishing unit performs fire extinguishing and cooling, the credibility of the first temperature value has a higher priority than the credibility of the second temperature value; Scenario 2: Within a period of time after the centralized cooling and fire extinguishing unit performs fire extinguishing and cooling, the credibility of the second temperature value has a higher priority than the credibility of the first temperature value.

2. The explosion-proof electric cabinet according to claim 1, characterized in that: The control module selects different fire alarm plans and determines the comprehensive total credibility generated by all temperature values ​​currently obtained by the explosion-proof electrical cabinet, and the comprehensive total credibility is obtained by the following formula: Among them, the Θ i (T) is the temperature correction factor; the C total is the comprehensive total credibility; the W i is the importance of the i-th working component in the explosion-proof electrical cabinet; N is the number of monitoring units; A i Execute the regional factor for the temperature data of the i-th monitoring unit; is the interaction effect between different temperature data.

3. The explosion-proof electric cabinet according to claim 1, characterized in that: A fire extinguishing control valve is installed at one end of each pressure pipe close to the explosion-proof electrical cabinet, and the other ends of all the pressure pipes are connected through branch pipes, and a boost control valve is installed on the branch pipe. The fire extinguishing control valve and the boost control valve are respectively communicated with the control module.

4. The explosion-proof electric cabinet according to claim 1, characterized in that: The fire extinguishing material includes N2+perfluorohexanone.

5. The explosion-proof electric cabinet according to claim 1, characterized in that: The inner cavity of the explosion-proof electrical cabinet is further provided with at least one active explosion relief system capable of actively controlling the pressure relief of the explosion relief plate; The active explosion relief system includes a high-pressure steel cylinder, a detector and a delivery pipe. The detector is installed inside the explosion-proof electric cabinet, and the high-pressure steel cylinder is arranged on the outer wall of the explosion-proof electric cabinet. One end of the delivery pipe is connected to the high-pressure steel cylinder, and the other end of the delivery pipe extends to the inner cavity of the explosion-proof electric cabinet. The detector is communicatively connected to the control module, and the control module is communicatively connected to the control circuit of the high-pressure steel cylinder.

6. The explosion-proof electric cabinet according to claim 5, characterized in that: In one group of the active explosion relief systems, the explosion suppression material inside the high-pressure steel cylinder is a mixture of one or more materials selected from water-based explosion suppression, carbon dioxide, heptafluoropropane, sodium bicarbonate, ammonium dihydrogen phosphate, and perfluorohexanone.

7. The explosion-proof electric cabinet according to claim 5, characterized in that: The detectors include a pressure detector and a temperature detector.

8. The explosion-proof electric cabinet according to claim 5, characterized in that: The end of the delivery pipeline located in the inner cavity of the explosion-proof electrical cabinet faces the explosion-proof plate.

9. The explosion-proof electric cabinet according to claim 1, characterized in that: The explosion-proof electrical cabinet is provided with a fine water mist fire automatic sprinkler system, which includes a fire pipe and a fire sprinkler head. The fire pipe is arranged above the inner cavity of the explosion-proof electrical cabinet, and the fire sprinkler head is arranged on the fire pipe.

10. The explosion-proof electric cabinet according to claim 9, characterized in that: The temperature sensor and the monitoring unit are fixed to the inner wall of the explosion-proof electric cabinet through a cylinder, and the port of the cylinder is connected to the inner cavity of the explosion-proof electric cabinet; The detection end of the monitoring unit passes through the inner wall of the cylinder and is fixed on the outer wall of the working component. The detection end of the temperature sensor is located on the body of the monitoring unit, and the port of the cylinder is away from the fire sprinkler head.

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