Explosion-proof electric cabinet for new energy supply

Abstract

The invention belongs to the technical field of anti-explosion electric cabinets, and particularly discloses an anti-explosion electric cabinet for new energy supply, which comprises an anti-explosion electric cabinet and an active cooling and fire extinguishing system, and is characterized in that 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 pipelines and a plurality of temperature feedback devices; a plurality of working parts in the explosion-proof electric cabinet are respectively provided with a monitoring unit; the explosion-proof electric cabinet has the advantages that the monitoring unit is arranged in the explosion-proof electric cabinet, real-time monitoring of the environment of the electric cabinet is achieved, and especially under the abnormal conditions of high temperature and the like, the active cooling and fire extinguishing system can rapidly respond, automatically increase the spraying amount of the fire extinguishing material and improve the fire extinguishing effect. The system integrates a passive pressure relief structure, an active explosion venting system, an inerting explosion suppression system and automatic water mist spraying, multi-level safety protection is provided, and safety and stability of electric power distribution facilities, especially an electric cabinet and a distribution box in a new energy grid-connected system in a complex environment are ensured.

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 used for energy supply with new energy sources. Background Art

[0002] As the capacity of new energy power generation units is small, the number is large, the distribution points are scattered, and they have significant intermittent, volatile, and random characteristics, the power system faces increasing challenges in power balance and safe and stable control. Especially in the context of large-scale development of new energy and high proportion of grid connection, the safety guarantee issues of traditional distribution boxes or cabinets are particularly prominent. For traditional distribution boxes or cabinets, a single ventilation or fire-fighting method is usually used, which cannot fully meet the actual use needs in complex environments. The explosion-proof structure of most traditional distribution cabinets lacks 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 facing excessively high temperatures, and it is impossible to provide continuous and effective safety guarantees.

[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 electric 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 electric 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 electric cabinet for supplying energy with new energy.

[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 parts 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 units. 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 values, so as to adopt a variety of action levels to reduce the internal temperature of the explosion-proof electric cabinet; an explosion-proof plate activated according to the action level is provided on the top of the inner cavity of the explosion-proof electric cabinet, 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: By setting up multiple monitoring units inside the explosion-proof electrical cabinet, real-time monitoring of the internal environment of the cabinet can be achieved. In particular, when abnormal conditions such as high temperature occur, the active cooling and fire extinguishing system can respond quickly and perform active fire extinguishing and cooling treatment. In addition, when the temperature rises further, the system can automatically increase the amount of fire extinguishing material sprayed to improve the fire extinguishing effect and the safety performance of the system.

[0008] To ensure the safety of the power cabinet in complex environments, the system integrates passive pressure relief structure, active explosion relief system, inerting explosion suppression system and fine water mist fire sprinkler system. These functional modules can provide multi-level and all-round safety protection in different dangerous situations, prevent safety accidents such as explosions and fires to the greatest extent, ensure the stability and safety of the power system, and are especially suitable for high-risk power distribution facilities, such as power cabinets and distribution boxes in new energy grid-connected power generation systems.

[0009] 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

[0010] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the present invention after the explosion relief plate and the cylinder are removed; Figure 2 It is a schematic diagram of the explosion venting piece and its connection structure of the present invention; Figure 3 A schematic diagram of the control module and its connection structure of the present invention; Figure 4 It is a schematic diagram of the explosion-proof electric cabinet and its connection structure of the present invention.

[0011] in, Figure 1-Figure 4 The corresponding relationship between the reference numerals and the component names is as follows: 1 explosion-proof electrical cabinet, 2 centralized cooling and fire extinguishing unit, 3 confluence controller, 4 control module, 5 pressure pipeline, 6 temperature feedback device, 7 monitoring unit, 8 fire extinguishing control valve, 9 branch pipe, 10 boost control valve, 11 explosion venting disc, 12 high-pressure cylinder, 13 detector, 14 delivery pipeline. DETAILED DESCRIPTION

[0012] In order to more clearly understand the above-mentioned purpose, 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 the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0013] 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0014] See also Figure 1-Figure 4 , the following describes an explosion-proof electric cabinet for renewable energy power supply according to some embodiments of the present invention.

[0015] The embodiment of the first aspect of the present invention provides an explosion-proof electric cabinet for renewable energy power supply. In some embodiments of the present invention, Figure 1-Figure 4 As shown, the explosion-proof electric cabinet includes an explosion-proof electric 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 electric cabinet 1 are respectively provided with monitoring units 7.

[0016] 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 powered by 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 materials stored in the centralized cooling and fire extinguishing unit 2 to the monitoring unit 7 through the pressure pipe 5.

[0017] The temperature feedback device includes a temperature sensor, and the temperature value obtained by the temperature feedback device includes a first temperature value collected by the monitoring unit when the working component is working and a second temperature value collected by the temperature sensor for the monitoring unit; 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 activated according to the action level is arranged on the top of the inner cavity of the explosion-proof electric cabinet, and the explosion venting piece is used to adjust the connection state between the explosion-proof electric cabinet and the external environment when the fire alarm plan is executed.

[0018] When the temperature value collected by the temperature feedback device 6 from the monitoring unit 7 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: T threshold =T ignition +k; Among them, T threshold is the set temperature threshold, T ignition is the ignition temperature of the combustible material on the working parts, and k is the safety factor.

[0019] 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.

[0020] The present invention provides an explosion-proof electric cabinet for renewable energy energy supply. The explosion-proof electric cabinet 1 is used to accommodate and protect a variety of energy supply components and electrical elements. The internal space is reasonably partitioned according to the operation 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 case of emergency, which is helpful for centralized cooling and fire extinguishing operations, thereby structurally ensuring the safe and stable operation of each internal component.

[0021] The active cooling and fire extinguishing system is arranged inside the explosion-proof electric cabinet 1, and is used to quickly intervene and perform effective cooling and suppression operations when the temperature rises abnormally or there is a hidden danger of combustion. Its core is to achieve rapid response and precise cooling through the linkage of multiple functional units, covering a comprehensive unit composed 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 electric 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.

[0022] 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 abnormal temperature is detected, the required materials can be quickly released under the command 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 a large range, so that the entire explosion-proof electric cabinet 1 can obtain stable and effective cooling support in emergency situations.

[0023] 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 vicinity of each working part 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.

[0024] The control module 4 is respectively connected to the centralized cooling and fire extinguishing unit 2 and multiple temperature feedback devices 6 for communication, and its function is to analyze and judge the collected temperature information in real time, and issue work instructions based on the comparison result between the temperature value and the predetermined temperature threshold value; 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, so as to maximize the fire extinguishing effect and reduce the temperature.

[0025] A plurality of pressure pipes 5 are used to connect the confluence controller 3 with all monitoring units 7 in the explosion-proof electrical cabinet 1. Each pressure pipe 5 has a relatively independent conveying 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 smoothness and sealing to avoid 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 pipeline temporarily fails due to a fault, other pipelines can still continue to maintain local or whole cabinet emergency cooling operations.

[0026] A plurality of temperature feedback devices 6 are respectively arranged near each key monitoring unit 7, and are used 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 timely capture changes 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.

[0027] The monitoring unit 7 is installed on multiple working parts in the explosion-proof electric 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 surface of the components 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 a cooling or fire extinguishing command when necessary, so as to achieve targeted protection of the local overheating area.

[0028] 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 confluence controller 3 to distribute resources to the most needed monitoring unit 7 position, thereby realizing 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 the fire extinguishing material and the specific delivery volume and delivery path, and then coordinates the pressure pipeline 5 to complete the differentiated fire extinguishing distribution; the temperature feedback device 6 and the monitoring unit 7 form a fine sensing network, so that the thermal environment status of each working component can be grasped in real time. Once the temperature abnormality is detected, an alarm is immediately sent to the control module 4, thereby maintaining the safe operation of the overall 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 under 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.

[0029] The temperature feedback device includes a temperature sensor, which can accurately obtain the temperature information inside the explosion-proof electric cabinet. The data collected by the temperature feedback device includes two types of key temperature values: one is the first temperature value of the working parts in the working state collected by the monitoring unit, and the other is the second temperature value of the monitoring unit body collected by the temperature sensor. The first temperature value reflects the temperature condition of each working part in the electric cabinet under load conditions, while the second temperature value provides the temperature data of the monitoring unit itself, ensuring that the system can fully understand the temperature distribution of each part in the electric cabinet. Provides reliable data support for the control module to help select a suitable fire alarm plan according to the current temperature conditions. The control module selects the most suitable fire alarm plan based on the temperature change trend and its impact on the inside of the electric cabinet by analyzing all the collected first temperature values ​​and second temperature values. When executing the fire alarm plan, the system uses multiple degrees of action to reduce the internal temperature of the explosion-proof electric cabinet, which include: temperature reduction speed, use of fire extinguishing means, and adjustment of air pressure intensity. These measures complement each other and jointly ensure that the inside of the electric cabinet can be quickly and effectively cooled when there is a risk of fire or high temperature.

[0030] When the fire alarm plan is executed, an explosion-proof plate is provided at the top of the inner cavity of the explosion-proof electric cabinet, which is activated according to the degree of action. The explosion-proof plate 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-proof plate is activated with the execution of the fire alarm plan. Its opening can effectively reduce the excessive temperature in the electric cabinet, and maintain the stability and safety of the explosion-proof electric cabinet by releasing the internal pressure and gas. The explosion-proof plate 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, and prevent 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-proof plate, the explosion-proof electric cabinet of the present invention can achieve effective monitoring and control of temperature when high temperature and fire risks occur, ensuring that the system can still maintain stable operation under abnormal conditions.

[0031] T ignition It is the minimum temperature threshold required for the combustible material on the working part to burn or thermally run away, which is usually determined by the chemical properties, physical properties and environmental impact of the combustible material. In the new energy explosion-proof electric cabinet, the materials used in different parts (such as battery internal electrolyte, plastic shell, protective coating, etc.) may have different thermal properties, so when determining T ignition When determining the temperature of a material, 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 continuing to rise, the control module 4 compares the collected temperature value with Tignition 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, with 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 the 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.

[0032] The safety factor k is a flexible control parameter in the entire temperature threshold formula, which is usually determined by the designer after comprehensive evaluation based on the actual use environment, the manufacturer's safety standards, the sensor error range, the degree of material aging, and other safety assessment factors; the existence of k can set up a "lead time" between the system's perceived temperature change and the actual risk, ensuring that the best cooling or fire extinguishing time will not be missed due to measurement errors or emergencies. Due to the variable environment and load conditions of the new energy explosion-proof cabinet, and the fact that the temperature feedback device 6 may have a certain degree of measurement deviation, the value of k should not be too small or too large; if k is too small, when the actual temperature is slightly higher than the measured value, the system is likely to miss the best intervention time; if k is too large, it may frequently trigger the cooling and fire extinguishing operation, resulting in a waste of system resources and reduced operating efficiency. The safety factor k can also be dynamically adjusted according to the actual working conditions in later use. For example, when the system monitors that the fault frequency or temperature abnormality frequency is high within a certain period of time, k can be temporarily increased to intervene in the risk earlier; on the contrary, if the system is stable and there are fewer extreme temperature fluctuations, the value of k can be appropriately reduced to leave a larger operating temperature range for the system.

[0033] 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 confluence controller 3, opening or increasing the delivery rate of the pressure pipeline 5, etc.; the 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 dropped by accurately injecting fire extinguishing materials, coolants or other suppression media, fundamentally reducing the probability of accidents. When the temperature exceeds T thresholdAfter that, the control module 4 sends a work instruction to the centralized cooling and fire extinguishing unit 2, and the centralized cooling and fire extinguishing unit 2 immediately distributes the internally stored fire extinguishing materials or coolants to the confluence controller 3. After receiving the instruction from the control module 4, the confluence controller 3 allocates the material output channel according to the overheating position and the degree of overheating, and transports the fire extinguishing materials or coolants to the overheated monitoring unit 7 through the pressure pipe 5 to achieve rapid cooling. The temperature feedback device 6 continuously transmits temperature change data back to the control module 4. If the cooling measures are effective, the control module 4 will stop or weaken the corresponding cooling operation when the temperature returns to below the safe value, so as to avoid excessive waste of resources or unnecessary system fluctuations.

[0034] 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 threshold Sensitivity 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 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 intensity of fire extinguishing and cooling is stopped or adjusted in time to avoid unnecessary consumption of resources.

[0035] The pressure pipe 5 is responsible for conveying fire extinguishing materials or cooling media in the explosion-proof electric cabinet powered by explosion-proof new energy 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 conveying fire extinguishing or cooling media, and the other end extends to the vicinity of different monitoring units 7 inside the explosion-proof electric cabinet 1 to ensure that the fire extinguishing materials can be quickly and accurately conveyed to the target location when the local temperature is abnormal or a fire occurs. In order to improve the protection level and response speed, a fire extinguishing control valve 8 is installed at one end of each pressure pipe 5 close to the explosion-proof electric cabinet 1, so that the pipe can be opened or closed separately according to actual needs, thereby avoiding indiscriminate spraying of the entire system, resulting in waste of resources or reduced fire extinguishing efficiency.

[0036] The function of the fire extinguishing control valve 8 is to control the amount and timing of local fire extinguishing material release. When the control module 4 receives the alarm information uploaded by the temperature feedback device 6 and finds that the temperature value of a monitoring unit 7 exceeds the threshold, it will send a valve opening command to the fire extinguishing control valve 8 of the corresponding pipeline, immediately opening the delivery channel of the fire extinguishing material, so that the fire extinguishing material containing inhibitors or cooling media can cover the ignition point or high-temperature part in a very short time, so as to achieve the purpose of timely suppressing the fire or rapidly cooling. The fire extinguishing control valve 8 has good pressure-resistant sealing performance, and can be opened and closed quickly and accurately even under high pressure. In the long-term use process, its sensitivity and airtightness can be maintained through regular inspection and maintenance.

[0037] 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 end of the pipe, and the fire extinguishing materials in the centralized cooling and fire extinguishing unit 2 can be distributed to each branch pipe 9 in sequence through this network. When a fire or abnormal temperature occurs in any one or more areas inside 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, which greatly improves the flexibility of responding to emergencies and can maximize the use of existing resources for precise disposal.

[0038] In order to ensure that sufficient pressure and delivery efficiency can be maintained when multiple channels are used at the same time or when the materials are transported over long distances, a boost control valve 10 is installed on the branch pipe 9. The boost control valve 10 communicates with the control module 4. When the control module 4 analyzes that the fire is serious or requires large flow and high speed fire extinguishing materials, it will issue a command to the boost control valve 10 to increase the flow pressure of the medium inside the branch pipe 9, so that the fire extinguishing materials can be timely and fully transported to the fire point or the high temperature monitoring unit 7. In non-emergency conditions, the boost control valve 10 maintains a relatively low pressure level to reduce energy consumption and wear on pipeline components, thereby taking into account the reliability and economy of the system.

[0039] The control module 4 is connected to the fire extinguishing control valve 8 and the boost control valve 10 in communication, and plays a core role in decision-making and coordination. On the one hand, it obtains global or local temperature data information from the temperature feedback device 6 and the monitoring unit 7. On the other hand, it decides when to open the boost control valve 10 to increase the delivery pressure, or only open the fire extinguishing control valve 8 in the corresponding area to perform fixed-point fire extinguishing and cooling according to the preset temperature threshold and system operation strategy. Specifically, when the temperature feedback device 6 feedbacks that a certain local temperature is close to or exceeds the set threshold, the control module 4 will first evaluate whether the current system pressure is sufficient to meet the fire extinguishing needs. If the required flow rate is small, only the fire extinguishing control valve 8 of the relevant pipeline will be opened; if the required flow rate is large or the temperature abnormality range is wide, the control module 4 will simultaneously open the boost control valve 10 to ensure that the supply pressure is sufficient, timely suppress the fire and quickly cool the system. This differentiated control method can not only make efficient use of fire extinguishing materials, but also effectively prevent the blind consumption of the entire system resources and reduce the subsequent maintenance and replenishment costs.

[0040] In summary, by introducing an active cooling and fire extinguishing system into the explosion-proof electric cabinet powered by explosion-proof new energy, combined with the linkage of the temperature feedback device 6, the control module 4, the fire extinguishing control valve 8, the boost control valve 10 and the centralized cooling and fire extinguishing unit 2, the problem that the traditional explosion-proof electric cabinet cannot effectively deal with high temperature and fire risks is solved. By real-time monitoring of the temperature of the working parts in the explosion-proof electric cabinet 1, and automatically triggering the cooling and fire extinguishing functions when the temperature exceeds the set threshold, the system can respond quickly and effectively avoid 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 fire extinguishing materials to be accurately delivered to the high-temperature area, optimizing resource utilization and improving fire extinguishing efficiency.

[0041] Specifically, the temperature value collected by the temperature feedback device 6 from the monitoring unit 7 includes the first temperature value of the working component obtained by the monitoring unit 7 when working and the second temperature value of the monitoring unit 7 itself obtained by the temperature feedback device 6, so as to ensure that before and after the high-intensity centralized cooling and fire extinguishing unit 2 operation, regardless of whether the monitoring unit 7 is in a damaged state, remote identification and monitoring of the control module 4 are performed through the temperature feedback device 6, and different fire alarm plans are executed. The temperature feedback device may include a temperature sensor for obtaining a temperature value to collect the second temperature value of the monitoring unit.

[0042] It can be seen from the above that by setting 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 simultaneously 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 state 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.

[0043] When the second temperature value detected by the temperature feedback device 6 rises abnormally, the system can identify that the monitoring unit 7 may be at risk of damage or functional failure, 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 start the centralized cooling and fire extinguishing unit 2 and the specific fire extinguishing measures. If both the first temperature value and the second temperature value 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 start 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 electric 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 under the background of high-proportion grid connection and large-scale development.

[0044] Furthermore, since the high-pressure material is used to extinguish the fire and cool it down and the explosion-proof plate 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: 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.

[0045] 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.

[0046] As can be seen from the above, the safety and reliability of the explosion-proof electric cabinet powered by explosion-proof new energy are effectively improved by the priority relationship between the first temperature value and the second temperature value when the control module 4 receives the first temperature value and the second temperature value. Specifically, the control module 4 assigns different priorities to the credibility of the temperature value in different situations, thereby realizing dynamic optimization management of the system.

[0047] In view of the description of the first situation, before the centralized cooling and fire extinguishing unit 2 is started to perform the fire extinguishing and cooling operation, the control module 4 gives priority to the credibility of the first temperature value being higher than the second temperature value. The first temperature value is derived from the actual temperature data of the working parts obtained by the monitoring unit 7 during operation, which directly reflects the real operating status of the core components (such as battery modules, inverters, etc.) in the explosion-proof electrical cabinet. Therefore, in this scenario, the control module 4 mainly relies on the first temperature value to determine whether it is necessary to start the cooling and fire extinguishing system to ensure that measures can be taken quickly and accurately when the temperature rises abnormally to prevent the occurrence of fire or thermal runaway. The monitoring unit 7 collects the temperature data of the working parts in real time and transmits these data to the control module 4 through the temperature feedback device 6. After receiving the first temperature value with high credibility, the control module 4 performs real-time analysis and judgment. Since the first temperature value directly reflects the temperature state of the core components, when the control module 4 receives the first temperature value exceeding the set temperature threshold, it immediately starts the centralized cooling and fire extinguishing unit 2, and transports the fire extinguishing material or cooling medium to the high temperature area through the pressure pipe 5, quickly lowers the temperature, and suppresses the spread of the fire. In scenario 1, the control module 4 makes decisions based only on the first temperature value, ensuring that fire-fighting resources are concentrated where they are most needed, avoiding unnecessary waste of resources, and improving fire-fighting efficiency and response speed.

[0048] 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 is derived 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 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 by 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 monitor the status of the monitoring unit 7 more effectively. 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 enabling the backup monitoring system or manually intervening in the cooling and fire extinguishing operation, to ensure the continuous and safe operation of the overall system. By adjusting the credibility priority of the temperature value at different operation stages, the present invention achieves double 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 electric cabinet.

[0049] Furthermore, each monitoring unit 7 is independently assigned 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 pipeline to transmit data and isolate the environment.

[0050] 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 to avoid cross-data interference and ensure 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.

[0051] The 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 usually adopts 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 to prevent environmental factors from interfering with the temperature feedback device 6, extend the service life of the equipment, and improve 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.

[0052] The data transmission in the encapsulated pipeline usually adopts digital signals or encoded analog signals to ensure that the data is not tampered with or lost during the transmission process. After the control module 4 receives the data from each temperature feedback device 6, it uses advanced data processing algorithms to analyze and evaluate the temperature data in real time to determine whether there is a temperature anomaly or potential safety hazard. The control module 4 analyzes the transmitted temperature data in real time and promptly identifies any temperature anomaly that exceeds 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 the cooling and fire extinguishing strategy according to the changes in the temperature data to optimize the response speed and efficiency of the system.

[0053] Furthermore, the control module executes different fire alarm plans, and the comprehensive total credibility is determined by all the temperature values ​​currently collected by the explosion-proof electric cabinet, and the comprehensive total credibility is obtained by the following formula: in, is the temperature correction factor; is the overall credibility; is the importance of the i-th working component in the explosion-proof electric cabinet; is the number of monitoring units; Implement regional factor for the temperature data of the i-th monitoring unit; There may be interaction effects between different temperature data.

[0054] 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: in, is the credibility of the detection unit i in the initial state. Its calculation method has been given, which 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 the working environment, and their measurement areas. It is a coefficient less than 1, usually ranging from 0 to 1.

[0055] Specifically, the initial credibility The calculation formula is as follows: in, is a credibility function corresponding to the first temperature value, which is a function of the difference between the temperature value and the temperature threshold, and is usually a decreasing function, and the credibility decreases as the temperature increases; 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 the difference in sensor accuracy or the influence of external environment.

[0056] Specifically, the temperature correction factor The calculation formula is as follows: in, The currently measured temperature value may be a first temperature value or a second temperature value; is the temperature threshold. It is the temperature that triggers an alarm or starts cooling / extinguishing operations. It is usually set according to the safe temperature range of the equipment. Temperature correction factor Characterizes the corrected credibility coefficient. The closer the temperature value is to the threshold, the smaller the correction value is; when the temperature exceeds the threshold, the correction value will drop significantly, indicating that the credibility of the sensor is low under this condition.

[0057] Furthermore, the selection rules of the fire alarm plan are: High risk status: If it is less than a certain set 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.

[0058] Medium risk status: Between the lower and upper 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.

[0059] Low risk status: 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.

[0060] Specifically, the fire emergency plan includes: Fire Alarm Plan A, emergency response under high-risk conditions: start the active fire extinguishing cooling system to quickly spray fire extinguishing materials or start the cooling cycle; start the fine water mist fire automatic sprinkler system to cool the entire electrical cabinet; start the passive pressure relief structure to automatically release the pressure in the cabinet to prevent explosion; start the active explosion relief system to trigger the explosion relief plate to ensure the overall safety of the system.

[0061] Fire Alarm Plan B, risk monitoring and intervention under medium risk conditions: start the monitoring system, continuously monitor the temperature changes inside the electrical cabinet, and dynamically adjust the cooling and fire extinguishing strategies; start the inerting explosion suppression system to release suppression gas to reduce the risk of fire; according to the system status, the control module can automatically adjust the spray volume of cooling and fire extinguishing materials.

[0062] 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 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.

[0063] 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.

[0064] In this embodiment, the fire extinguishing material used includes N2+perfluorohexanone, which can give full play to its cooling and fire extinguishing functions in a high temperature environment. As a component of the fire extinguishing material, N2+perfluorohexanone can effectively reduce the temperature inside the explosion-proof electric cabinet by cooling and suppressing the combustion reaction when the temperature is too high or a fire occurs, thereby achieving the effect of 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 electric cabinet, and can quickly cover the working parts with excessively high temperatures monitored by the temperature feedback device 6, especially 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.

[0065] During the cooling process, N2+perfluorohexanone first reduces the temperature inside the explosion-proof electric cabinet 1 by absorbing the surrounding heat. Its high heat absorption capacity allows the entire system to quickly enter a safe state. At the same time, perfluorohexanone itself has high chemical stability and will not react with other chemical components in the explosion-proof electric cabinet. Therefore, it can ensure the fire extinguishing effect while avoiding secondary damage to the explosion-proof electric cabinet system and equipment. In addition, the combination of N2 and perfluorohexanone enhances the gas diffusion and covering ability of the fire extinguishing material. The addition of N2 can not only further dilute the oxygen concentration in the environment and inhibit the combustion reaction, but also help the gas diffusion effect of perfluorohexanone during the fire extinguishing process, making the fire extinguishing range more extensive and uniform.

[0066] In any of the above embodiments, an explosion-proof plate 11 is provided at the top of the inner cavity of the explosion-proof electric cabinet 1 , and the explosion-proof plate 11 is used for autonomously relieving pressure when the internal pressure of the explosion-proof electric cabinet 1 is too high.

[0067] In this embodiment, the explosion venting piece 11 functions through its high-precision pressure trigger mechanism. When the air pressure inside the explosion-proof electric cabinet reaches a preset critical value, the explosion venting piece 11 will crack or rupture at the top position according to the design requirements, quickly release the gas accumulated inside, and reduce the air pressure in the inner cavity of the explosion-proof electric cabinet 1, thereby reducing the impact of the pressure in the inner cavity on the structure of the explosion-proof electric cabinet 1. The opening speed and pressure threshold of the explosion venting piece 11 are precisely controlled to ensure that it can play a role when the pressure of the explosion-proof electric cabinet 1 is too high and there is a potential danger, but it will not malfunction under normal working conditions, ensuring that the explosion-proof electric cabinet will not be disturbed when working safely.

[0068] The setting of the explosion-proof plate 11 complements the overall safety system of the explosion-proof electric cabinet, further enhancing the comprehensive explosion-proof, cooling, and fire-extinguishing capabilities of the explosion-proof electric cabinet. In particular, when the temperature feedback device 6 detects that the temperature inside the working parts or the cabinet has risen abnormally, causing the gas to expand or generate excessive pressure, the autonomous pressure relief function of the explosion-proof plate 11 will work together with the active cooling and fire-extinguishing system to minimize the pressure and slow down the temperature rise, thereby avoiding explosions or fires caused by excessive internal pressure or overheating of the explosion-proof electric cabinet. At the same time, the setting of the explosion-proof plate 11 also provides a more powerful safety guarantee for other protective devices of the explosion-proof electric cabinet (such as the spraying of fire-extinguishing materials, the operation of the temperature feedback device 6, etc.), ensuring that these systems can work normally within a reasonable pressure range, avoiding equipment damage or functional failure due to excessive pressure.

[0069] Furthermore, the explosion venting piece 11 may be a valve body structure penetrating 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 .

[0070] As can be seen from the above, the explosion venting piece 11 can have the following structure: The valve plate type explosion relief disc 11 is integrated into the valve assembly. When the internal pressure exceeds the threshold, the explosion relief disc 11 ruptures in an instant, releasing excessive gas or heat. The explosion relief disc 11 is designed for single use, and after rupture, a channel is exposed to allow gas or heat to escape safely.

[0071] The pressure release sheet is usually a film or metal sheet. When the pressure in the explosion-proof electric cabinet 1 exceeds the set threshold, the pressure release sheet will rupture and quickly release the internal pressure. The structure is simple and economical, but once ruptured, it needs to be replaced.

[0072] The multi-layer composite explosion-proof plate 11 is composed of different materials stacked together, wherein the outer layer is a solid metal layer for bearing 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.

[0073] 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 rupture quickly through the auxiliary force of the spring to release internal gas or heat, thereby enhancing the reaction speed of the explosion-proof plate 11 .

[0074] The electronic explosion relief piece 11 is combined with an electronic sensor. When the temperature or pressure of the explosion relief 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.

[0075] In any of the above embodiments, the inner cavity of the explosion-proof electric cabinet 1 is further provided with at least one set of active explosion relief systems that enable the staff to actively control the pressure relief of the explosion relief plate 11 .

[0076] The active explosion relief system includes a high-pressure steel cylinder 12, a detector 13 and a delivery pipeline 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 pipeline 14 is connected to the high-pressure steel cylinder 12, and the other end of the delivery pipeline 14 extends to the inner cavity of the explosion-proof electric cabinet 1. The detector 13 is communicatively connected to the control module 4, and the control module 4 is communicatively connected to the control circuit of the high-pressure steel cylinder 12.

[0077] In this embodiment, the inner cavity of the explosion-proof electric cabinet 1 is also provided with at least one set of active explosion relief systems that enable the staff to actively control the pressure relief of the explosion relief plate 11, so as to enhance the safety and controllability of the explosion-proof electric cabinet under abnormally high pressure conditions. The active explosion relief system can not only automatically relieve pressure when the air pressure reaches a dangerous level, but also actively perform pressure relief operations through remote control of the staff, so as to more accurately control the pressure state inside the explosion-proof electric cabinet 1 and prevent the risk of explosion caused by unexpected situations. The system includes a high-pressure steel cylinder 12, a detector 13, a delivery pipeline 14, and an electronic system that is connected to the control module 4 in communication. These components work closely together to achieve efficient and controllable pressure release.

[0078] The high-pressure steel cylinder 12 is installed on the outer wall of the explosion-proof electric cabinet 1. As a container for storing pressure-released gas, it has high pressure resistance and can deliver gas to the inner cavity of the explosion-proof electric cabinet 1 through the delivery pipe 14 when needed. The high-pressure steel cylinder 12 is filled with gas of predetermined pressure. It is mainly used to apply appropriate gas pressure to the inner cavity through the delivery pipe 14 when the pressure inside the explosion-proof electric cabinet 1 is too high, forcing the explosion-relief plate 11 to rupture and start the pressure relief process. The location of the high-pressure steel cylinder 12 is precisely designed to ensure that the gas can be released quickly and effectively for pressure control when necessary without occupying too much space inside the explosion-proof electric cabinet.

[0079] The detector 13 is installed inside the explosion-proof electric cabinet 1. Its main function is to monitor the changes in the air pressure inside the explosion-proof electric cabinet in real time and accurately capture any signs of abnormal pressure. Once the air pressure inside the explosion-proof electric 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 operation 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 from the high-pressure steel cylinder 12 to the inner cavity of the explosion-proof electric cabinet 1 through the delivery pipeline 14, thereby effectively reducing the air pressure in the inner cavity and preventing the explosion-proof electric cabinet 1 from rupturing or exploding due to excessive pressure.

[0080] The delivery pipe 14 allows the gas to be quickly delivered from the high-pressure steel cylinder 12 to the interior of the explosion-proof electric cabinet 1. When the other end of the pipe is connected to the inner cavity of the explosion-proof electric cabinet, the delivered gas volume and pressure are precisely adjusted to ensure that the pressure can be released to a safe range in the shortest time. At this time, the function of the delivery pipe 14 is not only to transmit gas, but also to evenly distribute the gas to a specific area in the explosion-proof electric cabinet 1, so that the explosion-proof plate 11 can be cracked in time under the action of high pressure, thereby achieving an effective pressure relief operation.

[0081] Furthermore, the detector 13 includes a pressure detector 13 .

[0082] In this embodiment, the function of the pressure detector 13 is to provide real-time feedback of the pressure information inside the explosion-proof electric cabinet, and to monitor even small changes in air pressure, thereby providing accurate pressure data for the control module 4. When the air pressure inside the explosion-proof electric cabinet 1 rises abnormally, the pressure detector 13 will send an alarm signal to trigger 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 start the active explosion relief system according to the preset pressure threshold, so as to release the excessive air pressure in time to prevent the explosion-proof electric cabinet 1 from rupture, explosion or other dangerous situations. The high precision and sensitivity of the pressure detector 13 enable the active explosion relief system to be started in time at the early stage of abnormal air pressure to avoid delays or mistakes.

[0083] Furthermore, the detector 13 also includes a temperature detector 13 .

[0084] In this embodiment, the function of the temperature detector 13 is to accurately feedback the temperature status inside the explosion-proof electric cabinet 1. When the temperature inside the explosion-proof electric cabinet exceeds the safety setting threshold, the temperature detector 13 will immediately detect this change and transmit the temperature data through the communication connection with the control module 4. Based on the received temperature information, the control module 4 determines whether the current temperature has approached or exceeded the temperature limit of the working part, and thus decides whether to start the centralized cooling and fire extinguishing unit 2. The high sensitivity of the temperature detector 13 enables the system to identify abnormalities at the early stage of temperature rise and take timely measures to avoid fire or equipment damage caused by excessive temperature.

[0085] In any of the above embodiments, the end of the delivery pipe 14 located in the inner cavity of the explosion-proof electric cabinet 1 faces the explosion-proof plate 11 .

[0086] 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 pipeline 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 pipeline 14 is precisely facing the explosion-proof plate 11, and the gas from the high-pressure steel cylinder 12 is quickly and effectively transported to the inside 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 sensor data is transmitted to the control module 4, and then the control module 4 issues a command to start the high-pressure steel cylinder 12 and transport gas to the explosion-proof plate 11 area through the delivery pipeline 14.

[0087] In any of the above embodiments, in a set of active explosion relief systems, the explosion suppression material inside the high-pressure steel cylinder 12 is a mixture of one or more of water-based explosion suppression, carbon dioxide, heptafluoropropane, sodium bicarbonate, diammonium phosphate, and perfluorohexanone.

[0088] In this embodiment, in a set of active explosion relief systems, the explosion suppression material inside the high-pressure steel 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, and can play different cooling, suppression and fire extinguishing roles in different fire and high temperature environments, thereby enhancing the system's multiple response capabilities when dealing with sudden fires or high temperatures. Specifically, water-based explosion suppression materials reduce temperature by absorbing heat through evaporation, rapidly reducing the temperature of the fire source and reducing the spread of fire; carbon dioxide suppresses the necessary oxygen for fire combustion through suffocation, rapidly reduces the temperature and oxygen concentration of the fire source, and achieves the effect of extinguishing fire; heptafluoropropane is a colorless, odorless gas that can absorb heat through rapid evaporation when a fire occurs, reduce 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 diammonium dihydrogen phosphate rapidly decompose through chemical reactions, releasing gases, 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.

[0089] The mixed use of these explosion suppression materials can complement each other's advantages and improve the diversity and comprehensiveness of fire extinguishing and cooling effects. For example, the combination of water-based explosion suppression materials and carbon dioxide can simultaneously play a cooling and suffocating role, enhancing the efficiency of fire extinguishing; and the mixture of perfluorohexanone and heptafluoropropane can significantly reduce the temperature of the inner cavity of the explosion-proof electric cabinet 1 in a very short time, while avoiding the corrosion or damage to electronic equipment that may be caused by the use of traditional gas fire extinguishing agents. Therefore, the combined use of explosion suppression materials can flexibly adjust the fire extinguishing strategy according to the type and nature of different fires, and maximize the safe operation of the explosion-proof electric cabinet.

[0090] In any of the above embodiments, a fine water mist fire automatic sprinkler system is provided in the explosion-proof electric cabinet 1 , and the fine water mist fire automatic sprinkler system includes a fire-fighting pipe, and the fire-fighting pipe is provided above the inner cavity of the explosion-proof electric cabinet 1 .

[0091] In this embodiment, the working principle of the fine water mist fire fighting system relies on the water source pre-stored in the pipeline. When a fire occurs or the system detects abnormal temperature, the system controls the pressure to deliver water through the fire fighting pipeline to multiple sprinkler heads in the inner cavity of the explosion-proof electric cabinet 1. These sprinkler heads are designed to be able to finely atomize water droplets, ensuring that the sprayed water mist forms tiny droplets in an instant. After these droplets come into contact with the fire source, they can quickly reduce the temperature of the fire source and cut off the oxygen required for combustion by absorbing heat and isolating oxygen. The atomization effect of the fine water mist ensures a wide coverage of the fire extinguishing, and can effectively act on various parts of the fire source to prevent the fire from spreading further.

[0092] In any of the above embodiments, the fine water mist fire automatic sprinkler system also includes a fire sprinkler head, which is arranged on the fire pipe.

[0093] In this embodiment, each fire sprinkler head is arranged on a fire pipe and is activated by the water flow pressure in the pipe. When the temperature detector 13 or the pressure detector 13 detects a fire signal, the control module 4 activates the water flow in the fire pipe and sends the water source to each sprinkler head. The opening and closing of the sprinkler head is usually controlled by a temperature sensitive device. For example, when the ambient temperature reaches a preset high temperature value, the temperature control element in the sprinkler head will sense the temperature change and automatically start the spraying function.

[0094] 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 prevent the temperature sensor and the monitoring unit from being impacted when the pressure changes rapidly due to a sharp drop in temperature inside the explosion-proof electric cabinet.

[0095] 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, and 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 to cause detection errors, so as to correctly reflect the real-time status of the explosion-proof electric cabinet through the second temperature value.

[0096] In this embodiment, the port of the cylinder is connected to the inner cavity of the explosion-proof electric cabinet, and the temperature sensor and the monitoring unit of the temperature feedback device are firmly fixed on the inner wall of the explosion-proof electric cabinet through the cylinder, so that the temperature sensor and the monitoring unit can avoid the impact caused by the change of the inner cavity pressure when the temperature changes sharply or drops sharply when working in the explosion-proof electric cabinet. The inside of the cylinder ensures that the temperature sensor can work stably, avoiding equipment damage or performance fluctuations caused by instantaneous high or low temperature changes, thereby ensuring long-term reliability and accuracy. The port of the cylinder is opposite to the direction of the fire sprinkler head, avoiding the sprayed fine water mist or fire extinguishing material directly contacting the detection end of the temperature sensor when the fire alarm plan is executed, and avoiding the measurement error caused by the direct contact of the water mist or fire extinguishing agent. It effectively ensures that the temperature sensor can accurately reflect the real-time temperature state of the explosion-proof electric cabinet during the actual fire extinguishing process, avoiding unnecessary interference or misjudgment, and ensuring that the monitoring unit can provide stable and reliable temperature data for the control module to judge.

[0097] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] The above embodiments are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design 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 all fall within the protection scope determined by the claims of the present invention.

Claims

1. An explosion-proof electric cabinet for new energy supply, characterized in that: It includes an explosion-proof electric cabinet and an active cooling and fire extinguishing system, wherein the active cooling and fire extinguishing system includes 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 parts in the explosion-proof electric 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 pipeline 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 pipeline; The temperature feedback device includes a temperature sensor, and the temperature value acquired by the temperature feedback device includes a first temperature value acquired by the monitoring unit when the working component is working and a second temperature value acquired by the temperature sensor when the monitoring unit is working; The control module selects a fire alarm plan according to all the first temperature values ​​and the second temperature values ​​to reduce the internal temperature of the explosion-proof electric cabinet by using multiple degrees of action; An explosion-proof plate activated according to the degree of action is arranged on the top of the inner cavity of the explosion-proof electric cabinet, 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.

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 electric cabinet, and the comprehensive total credibility is obtained by the following formula: Among them, the is the temperature correction factor; is the comprehensive total credibility; is the importance of the i-th working component in the explosion-proof electric cabinet; is the number of monitoring units; 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 electric 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 also 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 pipeline. The detector is installed inside the explosion-proof electric cabinet, the high-pressure steel cylinder is arranged on the outer wall of the explosion-proof electric cabinet, one end of the delivery pipeline is connected to the high-pressure steel cylinder, and the other end of the delivery pipeline 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 a group of the active explosion relief systems, the explosion suppression material inside the high-pressure steel cylinder is a mixed material of one or more of water-based explosion suppression, carbon dioxide, heptafluoropropane, sodium bicarbonate, diammonium 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 electric cabinet faces the explosion-proof plate.

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

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