Energy-saving explosion-proof electrical cabinet based on pressure storage compensation and control method of energy-saving explosion-proof electrical cabinet

Abstract

This application discloses an energy-saving explosion-proof electrical cabinet based on pressure compensation and a control method for the same cabinet, belonging to the technical field of electrical cabinets. The energy-saving explosion-proof electrical cabinet includes: a pressure sensor mounted on the cabinet body for real-time detection of the internal pressure and outputting a pressure detection signal; a controller for receiving the pressure detection signal and outputting a first control command when the pressure detection signal falls within a first preset range; a gas storage tank for pre-storing high-pressure gas and replenishing the cabinet body with gas according to the first control command; a controller for receiving the pressure detection signal and outputting a second control command when the pressure detection signal falls within a second preset range; and a main gas source for replenishing the cabinet body with gas according to the second control command at a first preset power. This technical solution allows for daily leakage to be compensated solely by the gas storage tank, eliminating the need for continuous operation of the main gas source and significantly reducing equipment operating energy consumption.

Description

Technical Field

[0001] This application relates to the field of electrical cabinet technology, specifically to an energy-saving explosion-proof electrical cabinet based on pressure storage compensation and a control method for the energy-saving explosion-proof electrical cabinet. Background Technology

[0002] Explosion-proof electrical cabinets are core supporting equipment in flammable and explosive hazardous locations such as petroleum, chemical and pharmaceutical industries. They form an explosion-proof sealed cavity by maintaining a specific air pressure inside the cabinet, preventing the entry of external flammable and explosive media and ensuring the safe operation of electrical components inside the cabinet.

[0003] Existing explosion-proof electrical cabinets generally maintain internal pressure by continuously supplying gas from a main gas source. This main gas source needs to be operational for extended periods, continuously outputting gas to compensate for daily leaks, resulting in significant energy consumption and persistently high operating energy costs. Furthermore, this gas supply mode lacks a tiered control mechanism for the main gas source. In the event of large-scale leaks or abnormal pressure within the cabinet, it cannot quickly respond and increase the gas supply power, exhibiting a significant pressure compensation response delay. This can easily lead to pressure instability within the cabinet, reducing explosion-proof stability. Therefore, traditional explosion-proof electrical cabinets struggle to meet the dual requirements of energy efficiency and high stability for explosion-proof equipment in hazardous locations. Summary of the Invention

[0004] This application provides an energy-saving explosion-proof electrical cabinet based on pressure compensation and a control method for the energy-saving explosion-proof electrical cabinet. The purpose is to solve the problems of excessive energy consumption caused by continuous gas supply from the main gas source in traditional explosion-proof electrical cabinets, the lack of graded control mechanism, and the pressure compensation response delay which easily leads to pressure instability inside the cabinet. The goal is to achieve energy-saving operation and improved explosion-proof stability of the explosion-proof electrical cabinet.

[0005] In a first aspect, embodiments of this application provide an energy-saving explosion-proof electrical cabinet based on pressure storage compensation, the energy-saving explosion-proof electrical cabinet comprising:

[0006] The cabinet is used to install electrical components and form an explosion-proof sealed cavity; A pressure sensor is installed on the cabinet to detect the pressure value inside the cabinet in real time and output a pressure detection signal. The controller is electrically connected to the pressure sensor and is used to receive the pressure detection signal and output a first control command when the pressure detection signal is identified as being within a first preset range. A gas storage tank, electrically connected to the controller and in communication with the cabinet, is used to pre-store high-pressure gas and replenish gas to the inside of the cabinet according to the first control command; The controller is also configured to receive the pressure detection signal and, if the pressure detection signal is identified as a second preset range, output a second control command. The main gas source is electrically connected to the controller and connects the gas storage tank and the cabinet, and is used to replenish gas to the inside of the cabinet according to the second control command at a first preset power.

[0007] Furthermore, the controller is also used for: The working time of the gas storage tank is obtained, and the internal gas storage capacity of the gas storage tank is determined based on the working time. If the internal gas storage volume is less than a set volume threshold, a third control command is output. The main gas source is used to replenish gas into the gas storage tank according to the second preset power based on the third control command.

[0008] Furthermore, the energy-saving explosion-proof electrical cabinet also includes a controllable explosion relief device, which is installed on the cabinet body; The controller is also configured to receive the pressure detection signal and, upon identifying that the pressure detection signal has reached the pressure relief threshold, output a fourth control command. The controllable pressure relief device is electrically connected to the controller and is used to activate the pressure relief mode when the internal pressure of the cabinet reaches a preset value according to the fourth control command.

[0009] Furthermore, the energy-saving explosion-proof electrical cabinet also includes: A high-speed valve is installed on the connecting pipe between the gas storage tank and the cabinet and is electrically connected to the controller. It is used to adjust the flow rate and rate at which the gas storage tank replenishes the gas inside the cabinet according to the first control command.

[0010] Furthermore, the energy-saving explosion-proof electrical cabinet is provided with at least two intersecting reinforcing ribs inside, which are used to divide the inner surface of the cabinet into multiple independent stress-bearing areas.

[0011] Furthermore, the spacing of the reinforcing ribs is 300mm-500mm, the thickness is 5mm-10mm, and they are connected to the inner surface of the cabinet.

[0012] Furthermore, the controller is also used for: Obtain the basic design information of the energy-saving explosion-proof electrical cabinet, which includes basic cabinet parameters, explosion characteristic parameters, and environmental condition parameters. The normal pressure fluctuation range of the energy-saving explosion-proof electrical cabinet is determined based on the basic design information, and the lower limit of the damage pressure of the energy-saving explosion-proof electrical cabinet is calculated based on the basic parameters and explosion characteristic parameters of the cabinet. Based on the normal pressure fluctuation range and the lower limit of the damaged pressure, the pressure relief threshold of the controllable explosion relief device is set.

[0013] Furthermore, the controller is also used for: Based on the explosion characteristic parameters and the basic parameters of the cabinet, the setting parameters of the reinforcing ribs inside the cabinet are determined.

[0014] Furthermore, the controller is also used for: If the pressure detection signal is identified as a third preset range, the coordinated working parameters of the gas storage tank and the main gas source are determined based on the pressure detection signal, so as to coordinately adjust the first control command and the second control command according to the coordinated working parameters.

[0015] Secondly, embodiments of this application provide a control method for an energy-saving explosion-proof electrical cabinet, the energy-saving explosion-proof electrical cabinet comprising: a cabinet body, a controller, a pressure sensor, an air storage tank, and a main air source, the method being executed by the controller, the method comprising: The pressure sensor detects the pressure inside the cabinet in real time and receives the pressure detection signal. When the pressure detection signal is identified as being within a first preset range, a first control command is output to the gas storage tank, so that the gas storage tank replenishes gas into the cabinet according to the first control command. When the pressure detection signal is identified as falling within the second preset range, a second control command is output to the main gas source, which then replenishes gas into the cabinet according to the first preset power based on the second control command.

[0016] Thirdly, embodiments of this application provide an electronic device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the second aspect.

[0017] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the second aspect.

[0018] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the second aspect.

[0019] The technical solution provided in this application, through the design of pre-stored high-pressure gas in the gas storage tank and staged pressure replenishment of the main gas source, achieves precise control of the cabinet pressure. Daily leaks are easily addressed by pressurizing the gas storage tank to maintain the cabinet pressure, eliminating the need for continuous operation of the main gas source and significantly reducing equipment energy consumption. Furthermore, through intelligent linkage between the pressure sensor and the controller, pressure ranges can be quickly identified and corresponding control commands output. The main gas source can be activated as needed and pressurized according to a preset power, effectively solving the problem of pressure compensation response delay and ensuring stable pressure within the cabinet. The staged pressure replenishment explosion-proof pressure replenishment method provided in this solution, combined with the explosion-proof sealing structure of the cabinet, can improve the safety of explosion-proof electrical cabinets used in flammable and explosive hazardous locations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the energy-saving explosion-proof electrical cabinet based on pressure compensation provided in Embodiment 1 of this application; Figure 2 This is a structural schematic diagram of a positive pressure explosion-proof electrical cabinet provided in this embodiment; Figure 3 This is a schematic diagram of the control process of the energy-saving explosion-proof electrical cabinet provided in Embodiment 2 of this application; Figure 4 This is a schematic diagram of the structure of the electronic device provided in Embodiment 3 of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0022] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] The following, in conjunction with the accompanying drawings, provides a detailed description of the energy-saving explosion-proof electrical cabinet and its control method based on pressure compensation provided in this application, through specific embodiments and application scenarios.

[0025] Example 1 Figure 1 This is a schematic diagram of the energy-saving explosion-proof electrical cabinet based on pressure compensation provided in Embodiment 1 of this application. Figure 1 As shown, it includes a cabinet 11, a pressure sensor 12, a controller 13, an air tank 14, and a main air source 15; the configuration and operation of each structure are as follows: Cabinet 11 can be a sealed cabinet made of Q235, 304, or 316 metal through bending and welding. It can be designed as a single-layer or double-layer structure depending on the application, for example, in dimensions of 1200mm wide × 600mm deep × 1800mm high. This cabinet is the main load-bearing structure of the explosion-proof electrical cabinet and can be used to install various explosion-proof electrical components in flammable and explosive fields such as petrochemicals and pharmaceuticals. The cabinet can be assembled using an integrated sealing welding process with specialized sealing components to form a sealed explosion-proof cavity, effectively preventing external flammable and explosive media from entering the cabinet space.

[0026] The pressure sensor 12 can be a high-precision pressure sensing element of diffused silicon or ceramic piezoresistive type. It can be fixedly embedded in a pre-drilled hole in the side wall of the cabinet 11 or at the transmitter sampling hole in the top, connected to the internal cavity of the cabinet, depending on the cabinet structure design. The sensor captures changes in gas pressure inside the cabinet 11 in real time through its own pressure sensing module, accurately detects the pressure value inside the cabinet, and converts the detected pressure data into an electrical signal for external transmission.

[0027] The controller 13, which can be an intelligent control module of the PLC (Programmable Logic Controller) or MCU (Micro Controller Unit) type, is the control core of the entire explosion-proof electrical cabinet. It can establish a stable electrical connection with the pressure sensor 12 through a dedicated wire. For example, it can acquire the pressure detection signal transmitted by the pressure sensor 12 in real time through its own signal receiving port. When the built-in program identifies that the signal is within the first preset range, the instruction output port generates and outputs the first control command.

[0028] The gas storage tank 14 can be a high-pressure gas storage container made of stainless steel, possessing excellent pressure resistance and sealing performance. The gas storage tank 14 can be installed within the compensation system cavity of the cabinet 11, independent of the electrical installation cavity, to avoid interference with the components inside the cabinet. The gas storage tank 14 can be electrically connected to the controller 13 via wires, and simultaneously connected to the internal cavity of the cabinet 11 via a dedicated gas connection pipeline. It can pre-store high-pressure clean gas, and upon receiving the first control command from the controller 13, automatically opens the gas replenishment passage to replenish high-pressure gas into the cabinet 11.

[0029] The controller 13 can also continuously receive and analyze the pressure detection signal transmitted by the pressure sensor 12 through a built-in pressure range identification program. When the program accurately identifies that the value of the pressure detection signal is within the second preset range, the command output port of the controller 13 will further generate a second control command to trigger the emergency air replenishment mode.

[0030] The main air source 15, which can be an industrial air compressor or an external clean high-pressure air source, is the main air supply power unit for the explosion-proof electrical cabinet and has the capability of high-power air replenishment. The main air source 15 can be electrically connected to the controller 13 via wires, and simultaneously connected to the air storage tank 14 and the cabinet 11 via dedicated air pipelines, forming a dual-path air replenishment structure. Upon receiving the second control command from the controller 13, the main air source will activate the air replenishment mode according to the preset first power, directly replenishing high-pressure gas into the cabinet 11 to meet emergency air replenishment needs.

[0031] The technical solution provided in this embodiment utilizes a tiered gas supply structure—pre-stored gas in a gas tank for daily small-flow replenishment and on-demand activation of the main gas source for emergency high-power replenishment—to completely replace the traditional continuous main gas source supply mode of explosion-proof electrical cabinets, significantly reducing equipment operating energy consumption. Simultaneously, through real-time signal linkage between the pressure sensor and the controller, accurate detection and intelligent control of the cabinet's internal pressure are achieved, enabling rapid response to replenishment needs across different pressure ranges. This effectively ensures stable internal pressure within the cabinet, solidifies the safety foundation of the explosion-proof seal, and significantly improves the operational reliability of the equipment in flammable and explosive hazardous locations.

[0032] In one embodiment, optionally, the controller 13 is further configured to: acquire the working time of the gas storage tank 14, and determine the internal gas storage volume of the gas storage tank 14 based on the working time; output a third control command when the internal gas storage volume is less than a set volume threshold; the main gas source 15 is configured to replenish gas into the gas storage tank 14 according to the third control command at a second preset power.

[0033] The controller 13 can accurately record the working time of each time the gas storage tank 14 is opened for gas replenishment through the timing module, forming a complete working time data record. The controller then uses the built-in gas consumption conversion program, combined with the gas replenishment flow parameters of the gas storage tank 14, to accurately calculate and determine the real-time gas storage volume in the gas storage tank 14 based on the recorded working time.

[0034] The controller 13 also has a built-in threshold comparison module, which compares the calculated real-time gas storage volume with a preset volume threshold in real time to determine whether the gas storage capacity of the gas tank 14 is sufficient. When the controller detects through the threshold comparison module that the gas storage volume inside the gas tank 14 is less than the set volume threshold, its command output port will immediately generate and output a third control command to trigger the gas tank pressurization mode.

[0035] After receiving the third control command from the controller 13, the main gas source 15 will automatically adjust the gas supply power to the second preset power, which is adapted to the storage pressure requirements of the gas storage tank 14. The main gas source will directionally replenish high-pressure gas into the gas storage tank 14 through a dedicated gas connection pipeline to complete the gas replenishment work of the gas storage tank 14.

[0036] The technical solution achieves dynamic control of the gas storage tank's storage capacity by accurately recording the tank's operating time and calculating the storage volume in real time through the controller. It can promptly detect gas shortages in the tank and ensures that the tank always maintains a sufficient reserve of high-pressure gas through the directional pressure replenishment design from the main gas source. This avoids the problem of daily gas replenishment failure due to gas shortages, guarantees the stable operation of the explosion-proof electrical cabinet's graded gas replenishment system, and further improves the continuity of pressure compensation.

[0037] In one embodiment, optionally, the energy-saving explosion-proof electrical cabinet further includes a controllable explosion relief device 16, which is disposed on the cabinet body 11; The controller 13 is also configured to receive the pressure detection signal and, upon recognizing that the pressure detection signal has reached the pressure relief threshold, output a fourth control command. The controllable pressure relief device 16 is electrically connected to the controller 13 and is used to activate the pressure relief mode when the internal pressure of the cabinet 11 reaches a preset value according to the fourth control command.

[0038] The controllable explosion relief device 16 can be a plate-type or valve-type professional explosion relief structure with the ability to quickly open and relieve pressure. This device can be fixedly installed at a dedicated explosion relief port on the side wall or top of the cabinet 11, connected to the internal cavity of the cabinet, depending on the cabinet's structure and explosion-proof requirements. Its installation position is mechanically designed to quickly dissipate internal pressure during pressure relief, preventing damage to the cabinet structure from shock waves.

[0039] The controller 13 has a pressure threshold recognition program and an explosion relief control program. It continuously receives pressure detection signals transmitted by the pressure sensor 12 through the signal receiving port to ensure real-time monitoring of the pressure inside the cabinet. The controller uses its built-in threshold recognition program to judge the received pressure detection signal values ​​in real time and accurately identify whether the signal has reached the preset pressure relief threshold. When the pressure detection signal is determined to have reached the pressure relief threshold, it will immediately generate and output a fourth control command through the command output port. This command is the activation signal for the controllable explosion relief device 16.

[0040] The controllable explosion relief device 16 establishes a stable electrical connection with the controller 13 through a wire. When it receives the fourth control command and the internal pressure of the cabinet 11 reaches the preset explosion relief value, it quickly activates the pressure relief mode through its own mechanical opening and closing structure, and quickly releases the high-pressure gas inside the cabinet 11 to achieve overpressure relief.

[0041] This technical solution utilizes a controllable explosion relief device to monitor the internal pressure of the cabinet in real time and accurately output explosion relief commands. This enables intelligent automatic pressure relief under overpressure conditions, making the pressure relief operation more timely and precise. It effectively controls the internal pressure of the cabinet within a safe range, preventing structural deformation or damage caused by excessive pressure. At the same time, it can quickly dissipate any explosive shock waves that may be generated inside the cabinet, significantly improving the structural safety and overall explosion-proof rating of the explosion-proof electrical cabinet, making it suitable for higher-risk flammable and explosive work scenarios.

[0042] In one embodiment, optionally, the energy-saving explosion-proof electrical cabinet further includes a high-speed valve 17, which is disposed on the connecting pipeline between the gas storage tank 14 and the cabinet body 11 and electrically connected to the controller 13, for adjusting the flow rate and rate of the gas supplied from the gas storage tank 14 to the cabinet body 11 according to the first control command.

[0043] The high-speed valve 17 can be an electromagnetic high-speed switching valve, which is fixedly installed on the gas pipeline connecting the gas tank 14 and the cabinet 11 through a special pipe clamp and seals, and is located in the gas supply path. At the same time, the high-speed valve can establish an electrical connection with the controller 13 through a wire, and can receive commands from the controller to achieve precise operation.

[0044] The high-speed valve 17 receives the first control command issued by the controller 13 in real time through its own signal receiving module, and can accurately analyze the preset flow and rate parameters in the command. The valve has a high-precision valve core opening adjustment structure inside, which can flexibly adjust the valve opening size according to the analyzed parameters. By changing its own opening, the high-speed valve can accurately and flexibly adjust the flow and rate of gas replenishment from the gas storage tank 14 to the cabinet 11, adapting to different daily gas replenishment needs.

[0045] This technical solution achieves precise control of the flow rate and speed of air replenishment from the air tank to the cabinet by adding a high-speed valve to the air replenishment path between the air tank and the cabinet. This allows daily air replenishment to better match the actual pressure loss situation of the cabinet, effectively avoiding the problems of sudden pressure rise in the cabinet due to excessively rapid air replenishment and untimely pressure compensation due to excessively slow air replenishment. This improves the accuracy and stability of daily pressure compensation and further ensures the stability of the internal pressure of the cabinet.

[0046] In one embodiment, optionally, the energy-saving explosion-proof electrical cabinet is provided with at least two intersecting reinforcing ribs inside, the reinforcing ribs being used to divide the inner surface of the cabinet 11 into multiple independent stress-bearing areas.

[0047] The reinforcing ribs can be strip-shaped metal ribs made of Q235 steel or 304 steel, possessing good structural strength and impact resistance. They can be customized according to the internal dimensions and stress requirements of the cabinet and are firmly fixed to the internal wall of the cabinet 11 by welding. The reinforcing ribs are set in at least two staggered directions, longitudinal and transverse, and diagonal ribs can be added as needed, for example, in a crisscrossing grid structure.

[0048] The reinforcing ribs, through their structural partitioning, divide the inner surface of the cabinet 11 into multiple independent, enclosed areas, forming several independent stress-bearing zones. These independent stress-bearing zones disperse the pressure and blast wave forces within the cabinet, preventing the forces from concentrating in localized areas of the cabinet and effectively blocking and limiting the irregular propagation of blast wave forces within the cabinet.

[0049] This technical solution, by setting up multi-directional interlaced reinforcing ribs inside the cabinet, divides the inner surface of the cabinet into multiple independent stress zones, achieving uniform distribution of the stress on the cabinet. From a structural design perspective, it improves the cabinet's explosion resistance, effectively reduces the impact damage of shock waves on the local structure of the cabinet, and prevents the cabinet from deforming or cracking due to excessive local stress. At the same time, it improves the overall structural strength of the cabinet and extends the service life of the equipment.

[0050] In one embodiment, optionally, the spacing of the reinforcing ribs 18 is 300mm-500mm, the thickness is 5mm-10mm, and they are connected to the inner surface of the cabinet 11.

[0051] The reinforcing ribs, designed for standardization and specification, have their dimensions optimized through structural mechanics calculations to meet the structural requirements of conventional explosion-proof electrical cabinets. The spacing of these ribs within the cabinet 11 is strictly controlled between 300mm and 500mm, and their thickness is precisely set between 5mm and 10mm. For example, they can be configured as a standard specification with a spacing of 400mm and a thickness of 8mm, depending on the cabinet dimensions, or the parameters can be fine-tuned according to actual explosion-proof requirements.

[0052] The reinforcing ribs can be fully welded to the inner surface of the cabinet 11 for omnidirectional fixation, with no gaps or incomplete welds at the welding joints. This connection method allows the ribs and the cabinet 11 to form an integrated load-bearing structure, enabling the reinforcing ribs to truly participate in the load-bearing capacity of the cabinet, sharing the pressure and shock wave forces within the cabinet, and preventing the connection between the ribs and the cabinet from loosening.

[0053] This technical solution standardizes the spacing and thickness of the reinforcing ribs, making their placement more consistent with structural mechanics principles. This further optimizes the stress distribution effect of the cabinet, maximizing the structural reinforcement function of the ribs. Combined with the integrated welding connection to the inner surface of the cabinet, it avoids problems such as rib detachment and localized cracking under stress, making the cabinet's explosion-proof and pressure-resistant performance more stable and reliable. At the same time, the standardized design also facilitates the processing, installation, and subsequent maintenance of the reinforcing ribs.

[0054] In one embodiment, optionally, the controller 13 is further configured to: acquire basic design information of the energy-saving explosion-proof electrical cabinet, the basic design information including basic cabinet parameters, explosion characteristic parameters, and environmental condition parameters; determine the normal pressure fluctuation range of the energy-saving explosion-proof electrical cabinet based on the basic design information, and calculate the lower limit of the damaged pressure of the energy-saving explosion-proof electrical cabinet based on the basic cabinet parameters and explosion characteristic parameters; and set the pressure relief threshold of the controllable explosion relief device 16 in combination with the normal pressure fluctuation range and the lower limit of the damaged pressure.

[0055] The controller 13 can be a PLC equipped with a large-capacity data storage module and a professional computing module. Through its own data input port, it can manually input or automatically obtain a complete set of basic design information of the explosion-proof electrical cabinet. This information includes basic cabinet parameters such as cabinet size, material, and structural form, explosion characteristic parameters such as explosion pressure, explosion index, and explosion duration, as well as environmental condition parameters such as ambient temperature, humidity, and altitude.

[0056] The controller 13 has built-in pressure range calculation and structural mechanics calculation programs, enabling comprehensive data analysis and precise calculations based on the acquired foundation design information. Through the pressure range calculation program, combined with the interrelationships of various foundation design information, the controller determines the normal pressure fluctuation range suitable for the explosion-proof electrical cabinet, which complies with industry explosion-proof standards. Simultaneously, based on the cabinet's basic parameters and explosion characteristic parameters, the controller simulates the cabinet's pressure conditions through the structural mechanics calculation program, accurately calculating the lower limit of the damage pressure at which structural damage to the cabinet occurs.

[0057] The controller 13 can also combine the established normal pressure fluctuation range and the lower limit of the damaged pressure, and select a reasonable numerical range between the two according to industry standards and safety design principles. The controller accurately sets the pressure relief threshold of the controllable explosion relief device 16 from this numerical range, and permanently stores the threshold in its own database as a standard for pressure relief judgment.

[0058] This technical solution, by combining the basic design information of the explosion-proof electrical cabinet from all dimensions, including the cabinet body, explosion risk, and environmental conditions, calculates and determines the normal pressure fluctuation range and the lower limit of the damaged pressure. This allows for the scientific setting of the pressure relief threshold of the controllable explosion relief device. The pressure relief threshold is no longer a uniform fixed value, but rather more closely matches the actual structure of the equipment, the explosion risk, and the operating environment. This avoids the problems of excessively high pressure relief thresholds causing damage to the cabinet structure, and excessively low thresholds leading to ineffective pressure relief. It achieves scientific, precise, and personalized setting of the explosion relief threshold, significantly improving the pressure relief stability of the controllable explosion relief device and the safety protection effect of the cabinet.

[0059] In one embodiment, optionally, the controller 13 is further configured to: determine the setting parameters of the reinforcing rib members inside the cabinet 11 based on the explosion characteristic parameters and the basic parameters of the cabinet.

[0060] The controller 13 can quickly extract the stored explosion characteristic parameters and cabinet basic parameters from the internal database through its own data retrieval module, and use them as the core basic data for the design of the reinforcing rib components.

[0061] The controller 13 uses a built-in structural mechanics analysis program to perform a comprehensive simulation analysis of the extracted parameters. Combining the stress characteristics under different explosion pressures and cabinet dimensions, it simulates the structural reinforcement effect of different reinforcing rib setting schemes. At the same time, the controller uses a parameter matching program to accurately determine the specific setting parameters such as the layout direction, spacing, thickness, and quantity of the reinforcing rib components based on the simulation analysis results and the actual explosion-proof requirements and internal installation space of the cabinet 11.

[0062] This technical solution combines explosion characteristic parameters and basic cabinet parameters, and uses structural mechanics analysis to scientifically determine the parameters for setting the reinforcing ribs. This makes the design of the reinforcing ribs no longer based on experience, but rather more in line with the actual explosion resistance requirements and structural characteristics of the cabinet. It can match the optimal reinforcing rib setting scheme according to different explosion pressures, cabinet dimensions and materials, maximize the structural strengthening and shock wave blocking effects of the reinforcing ribs, and improve the scientific nature of the cabinet structural design.

[0063] In one embodiment, optionally, the controller 13 is further configured to: determine the cooperative working parameters of the gas storage tank 14 and the main gas source 15 based on the pressure detection signal when the pressure detection signal is identified as a third preset range, so as to coordinately adjust the first control command and the second control command according to the cooperative working parameters.

[0064] The controller 13 can continuously judge the pressure detection signal transmitted in real time by the air pressure sensor 12 through the built-in pressure range identification program, and accurately identify whether the signal is in the third preset range, which is the critical pressure range for large-scale leakage of the cabinet. When the pressure detection signal is detected to be in the third preset range, the built-in collaborative control mode will be activated immediately, and the air replenishment parameter calculation program will be triggered at the same time. Based on the specific value of the pressure detection signal in the third preset range, combined with the real-time pressure loss of the cabinet 11 and the air replenishment requirements, the collaborative working parameters such as the air replenishment power, air replenishment rate, and air replenishment duration of the air storage tank 14 and the main air source 15 will be accurately calculated and determined to ensure that the air replenishment efficiency of the dual air source is maximized.

[0065] The controller 13 then adjusts the originally independently issued first and second control commands in real time according to the determined collaborative working parameters, so that the adjusted commands match and coordinate with each other. The gas storage tank 14 and the main gas source 15 will start synchronously according to the adjusted control commands, and replenish the gas inside the cabinet 11 with the set collaborative working parameters to achieve joint gas replenishment from two gas sources.

[0066] This technical solution innovatively achieves a dual-source combined gas replenishment mode by accurately determining the working parameters of the gas storage tank and the main gas source and coordinating the adjustment of control commands. It is suitable for emergency gas replenishment needs in the event of large-scale leakage in the cabinet. The dual-source combined gas replenishment significantly improves the overall gas replenishment efficiency and can quickly restore the pressure inside the cabinet to a safe range in a short time. It effectively avoids the problems of pressure instability and explosion-proof seal failure caused by untimely gas replenishment, and further enhances the emergency gas replenishment capability, pressure stability and safety protection capability under extreme working conditions of the explosion-proof electrical cabinet.

[0067] To enable those skilled in the art to better understand this solution, this application also provides a preferred embodiment.

[0068] This implementation addresses the technical pain points of traditional explosion-proof electrical cabinets in flammable and explosive hazardous locations such as petroleum, chemical, and pharmaceutical industries. These issues include high energy consumption due to continuous gas supply, delayed response to abnormal operating conditions, and poor control of explosion shock waves. It integrates core designs such as pressure compensation, dual-mode intelligent control, controllable explosion relief devices, and optimized cabinet structure mechanics. While ensuring the highest level of explosion-proof safety, it significantly reduces equipment operating energy consumption and substantially improves system reliability. The following provides a detailed description of the overall design, core modules, and key parameters of this explosion-proof electrical cabinet. Figure 2 This is a structural schematic diagram of a positive pressure explosion-proof electrical cabinet provided in this embodiment, showing the front layout and side cross-section (AA view) of the cabinet. It is mainly used in flammable and explosive hazardous locations such as petroleum and chemical industries. It prevents external explosive gases from entering by maintaining positive pressure inside the cabinet, thus ensuring the safe operation of internal electrical equipment.

[0069] The explosion-proof room can be welded from high-strength metal plates and serves as an electrical installation cavity for installing various control and protection electrical components. The front is reserved with operation windows, button areas and observation windows to facilitate on-site debugging and status monitoring.

[0070] The compensation / control module is a functional unit that integrates pressure compensation, pressure detection and intelligent control components. It includes components such as pressure gauges, control instruments and high-speed valves. It is responsible for monitoring the pressure inside the cabinet and performing pressure replenishment / relief operations. It is the core module for realizing energy-saving positive pressure control.

[0071] The gas pipeline is a gas pipeline that connects the external gas source, the compensation module and the electrical installation cavity. It is responsible for delivering clean compressed air to maintain positive pressure and compensate for pressure inside the cabinet.

[0072] The top hinge is used to connect the cabinet door to the cabinet body or the upper locking mechanism, ensuring that the cabinet door can be opened and closed flexibly, while meeting the explosion-proof sealing requirements to prevent the cabinet door from being opened accidentally.

[0073] The observation window, the sealing and observation structure of the cabinet door, includes an explosion-proof glass observation window and a door seal, which facilitates observation of the internal condition and ensures airtightness when the cabinet door is closed, maintaining a positive pressure environment inside the cabinet.

[0074] The lower hinge, which works in conjunction with the top hinge, secures the cabinet door together, ensuring even force distribution and reliable sealing, while also facilitating quick disassembly and assembly during maintenance.

[0075] The air inlet continuously or intermittently injects clean air into the cabinet to maintain a slight positive pressure inside. The compensation / control module monitors the pressure in real time and quickly replenishes the pressure through the pressure tank, reducing the operation of the main air source and achieving energy saving. The cabinet door can be sealed and observed to ensure that the positive pressure environment is not disrupted. The air outlet and sampling port are used for pressure regulation and status detection to ensure stable system operation.

[0076] Specifically, the inventive concept of this solution can be described from the following aspects: I. Overall cabinet structure design: This explosion-proof electrical cabinet adopts a functionally partitioned cavity structure design, which solves the technical problems of traditional cabinets having a single structure, chaotic air and circuit layout, and mutual interference between the compensation system and the electrical system. The specific setup is as follows: The cabinet consists of three core parts: the electrical installation cavity, the compensation system cavity, and the air connection pipeline. It also has reserved inlet and outlet glands, transmitter sampling holes, air inlets and outlets, and can be directly connected to an air compressor or clean air source to achieve a stable air supply and orderly air flow.

[0077] Electrical installation cavity: As the core functional cavity, it is used to install various electrical components and provides a basic space for explosion-proof protection of the components. The cavity sealing performance is designed according to high standards to reduce daily gas leakage. Compensation system cavity: Located at the top or side of the cabinet, it is independent of the electrical installation cavity. The cavity integrates core components for pressure compensation such as air tank, high-speed valve, and control board, so as to avoid the impact of vibration and air pressure changes on electrical components during the operation of the compensation system. Gas connection pipeline: High pressure resistant and sealed pipelines are used to connect the external gas source, the compensation system cavity and the electrical installation cavity. The gas flow path is precisely planned to realize the pressure storage from the gas source to the gas tank, the pressure replenishment from the gas tank to the cabinet and the exhaust of abnormal gas pressure in the cabinet, ensuring the stability and sealing of the gas transmission.

[0078] The basic parameters of the cabinet can be flexibly adapted according to the actual application scenario. The standard design size is 1800mm×1200mm×600mm (height×width×depth). The materials can be Q235 steel, 304 stainless steel or 316 stainless steel. The structure can be designed as single layer or double layer. In this preferred embodiment, Q235 steel is used to make a single-layer structure cabinet, which takes into account structural strength, explosion-proof performance and cost control.

[0079] II. Design of Pressure Compensation and Dual-Mode Intelligent Control Module: This module addresses the technical problems of high energy consumption and delayed main gas source startup during large-scale leaks / abnormal operating conditions caused by continuous gas supply to maintain pressure in traditional explosion-proof electrical cabinets. It innovatively adopts a pressure storage compensation and dual-mode intelligent control mechanism to solve the energy efficiency problem of pressure maintenance from the perspective of energy storage and precise release. The specific settings are as follows: The core design of the pressure compensation system abandons the traditional "continuous gas supply for pressure replenishment" mode and adds a high-pressure gas storage tank as an energy storage unit. High-pressure gas from an external gas source is pre-stored in the tank. In the event of minor leaks in the cabinet, the tank releases gas directly through a high-speed valve for pressure compensation, without needing to activate the main gas source. Only in the event of a large-scale leak or a sudden, abnormal drop in pressure does the control system automatically trigger the main gas source to start, achieving staged pressure replenishment. This design fundamentally reduces the operating time of the main gas source, significantly reducing the overall energy consumption of the equipment. Simultaneously, the high-pressure gas released from the storage tank through the high-speed valve provides a much faster pressure replenishment response than traditional direct supply from the main gas source, solving the response delay problem.

[0080] Dual-mode intelligent control design: An intelligent control system is built based on the control board within the compensation system cavity, integrating pressure detection, signal analysis, valve and air source linkage control functions, and setting up a daily pressure replenishment mode and an emergency response mode. Daily pressure replenishment mode: When the cabinet pressure is within the normal fluctuation range, the control system monitors the cabinet pressure in real time. When the pressure is lower than the normal positive pressure lower limit, the high-speed valve is automatically opened and the air tank provides precise pressure replenishment. The high-speed valve is immediately closed after the pressure returns to the normal range. Emergency Mode: When a large-scale leak or other abnormality occurs in the cabinet, the pressure drops rapidly and the gas tank cannot maintain the normal pressure, the control system detects the abnormal pressure signal through the transmitter and instantly triggers the main gas source to open. At the same time, it increases the opening of the high-speed valve to achieve joint pressure replenishment of the gas tank and the main gas source, ensuring that the pressure inside the cabinet is quickly restored to a safe range.

[0081] III. Controllable Explosion Relief Device and Cabinet Structural Mechanical Optimization Design: This section addresses the technical problem of explosion shock waves easily spreading and causing overall damage to the cabinet and failure of explosion protection when explosion-proof electrical cabinets are exposed to an explosion. It combines a controllable explosion relief device with the internal structural mechanics design of the cabinet. By precisely setting the opening pressure of the explosion relief device and optimizing the internal structure of the cabinet, the propagation range of the explosion shock wave is effectively controlled, thereby improving the cabinet's explosion resistance and explosion relief capabilities. The specific design process and parameter settings are as follows. Before designing, it is necessary to obtain the basic parameters of the cabinet, explosion characteristic parameters (explosion pressure Pmax, explosion index Kst, explosion duration t), and environmental condition parameters (ambient temperature T, humidity RH, altitude H) as the design basis.

[0082] (a) Determination of core pressure parameters The pressure parameter design follows the principle that "the opening pressure of the explosion relief device should be between the upper limit of normal pressure fluctuation and the lower limit of the pressure at which the cabinet is damaged," ensuring that the explosion relief device does not trigger during normal operation and that it opens before the cabinet is damaged in the event of an explosion, thus achieving effective explosion relief. In this embodiment, the characteristics of a single-layer Q235 steel cabinet and the explosion parameters (explosion pressure 1.0 MPa, explosion index Kst = 150 bar) are considered. (m / s, explosion duration t=100ms), determine the core pressure parameters: Normal pressure fluctuation range: Taking into account the sealing performance of the cabinet, the stability of the air supply system and the impact of changes in ambient temperature on the air pressure inside the cabinet, the positive pressure range is set to 50Pa~1000Pa and the negative pressure range is -50Pa~0Pa. This range not only meets the industry standard for positive pressure operation of explosion-proof electrical cabinets, but also sets a clear pressure threshold for daily pressure compensation to avoid excessive or insufficient pressure compensation. The lower limit of pressure that may damage the cabinet: Based on the material strength of Q235 steel, the structural characteristics of a single-layer cabinet, and the explosion pressure parameters, this value is set to 1.5MPa. This value is the critical value at which the cabinet can withstand the explosion pressure, ensuring that the cabinet will not suffer structural damage below this pressure. Explosion relief device opening pressure: Based on the design principle of "greater than the upper limit of normal pressure fluctuation and less than the lower limit of cabinet damage pressure", and matching the explosion characteristic parameters of this embodiment, the explosion relief device opening pressure is calculated and determined to be 0.15MPa. This pressure value ensures that when an explosion occurs, the explosion relief device will automatically open when the gas pressure inside the cabinet reaches 0.15MPa, quickly release the explosion pressure, prevent the gas pressure from continuing to rise to the lower limit of cabinet damage pressure, and effectively protect the cabinet structure.

[0083] (II) Internal Reinforcing Rib Structure Design of the Cabinet: To address the technical problem of irregular propagation of blast shock waves within the cabinet, which can easily lead to excessive local stress and deformation damage, this solution employs a crisscrossing reinforcing rib structure. This divides the cabinet interior into multiple relatively independent small compartments, thereby limiting the propagation range of the blast shock waves and simultaneously improving the overall structural strength of the cabinet. The specific design is as follows: The spacing of the reinforcing ribs is set at 400mm and the thickness is set at 8mm. This parameter takes into account both structural strength and ease of installation and maintenance. If the spacing is too small, the internal space of the cabinet will be narrow, affecting the installation of components and subsequent maintenance. If the spacing is too large, it will not be able to effectively divide the shock wave. If the thickness is insufficient, it will not be able to improve the structural strength. If the thickness is too large, it will increase the overall weight and cost of the cabinet. The reinforcing ribs are welded to the cabinet body in an integrated design, and the material is the same as the cabinet body, which is Q235 steel. This ensures the connection strength between the reinforcing ribs and the cabinet body and prevents the reinforcing ribs from falling off and failing during an explosion. The divided "small compartments" can limit the shock wave of the explosion to a local area, greatly reducing the impact of the shock wave on the entire cabinet body, while dispersing the stress borne by the cabinet body and improving the overall explosion resistance.

[0084] (III) Finite element analysis and verification: To ensure the rationality and reliability of the controllable explosion relief device and cabinet structural mechanical design, and to avoid problems such as excessive cabinet stress, excessive deformation, or resonance in practical applications, this scheme conducts a comprehensive finite element analysis and verification of the cabinet after the design is completed. The analysis results for the design parameters of the single-layer Q235 steel cabinet are as follows: Stress analysis: When the cabinet is subjected to an explosion pressure of 1.0MPa, the maximum stress is 120MPa, which is much less than the yield strength of Q235 steel of 235MPa, ensuring that the cabinet will not undergo plastic deformation under the action of explosion pressure. Deformation analysis: The maximum deformation of the cabinet after being subjected to the explosion pressure is 2mm, which is less than the industry-allowed deformation range of 5mm, ensuring that the cabinet structure will not cause sealing failure or component damage due to deformation; Modal analysis: The natural frequency of the cabinet is 100Hz, which is greater than the vibration frequency of 50Hz during normal operation of the equipment. This ensures that the cabinet will not resonate during daily operation and avoids problems such as structural loosening and reduced sealing performance caused by resonance.

[0085] IV. Scalable Design and Applicable Scenarios Based on its core design, this explosion-proof electrical cabinet is equipped with expandable interfaces and design space to meet the personalized explosion-proof needs of different industries and locations with different hazard levels. Furthermore, thanks to its core advantages of pressure compensation, intelligent control, and controllable explosion relief, it can be widely used in various flammable and explosive hazardous locations, as detailed below: In addition to the above configuration methods, this solution also provides some extensible solutions, as follows: Multi-layer structure design: For locations with extremely high explosion risk, the cabinet can be designed with a double-layer structure to increase the lower limit of the cabinet's damage pressure. At the same time, the double-layer structure can further enhance the sealing performance and reduce daily gas leakage. Intelligent explosion relief control: Based on the existing controllable explosion relief device, an intelligent sensor and control module are added to realize the automatic opening and closing of the explosion relief device. At the same time, the explosion relief opening can be adjusted according to the explosion pressure to improve the accuracy of explosion relief. Remote monitoring and diagnosis: By adding an IoT monitoring module to the cabinet, data such as pressure, temperature, gas circuit operation status, and explosion relief device status are uploaded to the remote monitoring platform in real time, enabling real-time monitoring, fault early warning, and remote diagnosis of the explosion-proof electrical cabinet, thereby improving the intelligent management level of the equipment.

[0086] This solution, through its configuration, can meet a wide range of application scenarios, including the following: Petrochemical industry: Suitable for hazardous locations such as oil fields, refineries, and chemical industrial parks where flammable and explosive media are produced, stored, and transported, providing explosion-proof protection for on-site electrical control equipment; Pharmaceutical industry: Suitable for workshops and sections where flammable and explosive solvents are used or reacted in pharmaceutical processes, meeting the high cleanliness and high safety explosion-proof requirements of the pharmaceutical industry; Coal mining industry: Suitable for underground coal mines, coal washing plants and other places with risks of gas and coal dust explosions, providing explosion protection for electrical equipment in underground coal mines.

[0087] This preferred embodiment solves the problems of high energy consumption and response delay in traditional explosion-proof electrical cabinets by using pressure compensation and dual-mode intelligent control. It also solves the problems of poor control of explosion shock waves and insufficient explosion resistance of the cabinet by using a controllable explosion relief device and optimization of the cabinet's structural mechanics. All modules work together to achieve energy saving, intelligence and high reliability of the equipment while ensuring explosion-proof safety, and can provide strong support for electrical safety in various flammable and explosive hazardous locations.

[0088] Example 2 Figure 3 This is a schematic flowchart illustrating the control process of the energy-saving explosion-proof electrical cabinet provided in Embodiment 2 of this application. The energy-saving explosion-proof electrical cabinet includes: a cabinet body, a controller, a pressure sensor, an air tank, and a main air source. The method is executed by the controller, as shown below. Figure 3 As shown, the method includes: S301, the pressure sensor detects the pressure value inside the cabinet in real time and receives the pressure detection signal; S302, when the pressure detection signal is identified as a first preset range, a first control command is output to the gas storage tank, so that the gas storage tank replenishes gas into the cabinet according to the first control command; S303, when the pressure detection signal is identified as the second preset range, a second control command is output to the main gas source, so that the main gas source replenishes gas to the cabinet according to the first preset power according to the second control command.

[0089] The device corresponding to the control method of the energy-saving explosion-proof electrical cabinet in this application embodiment can be a system, or a component, integrated circuit, or chip in a terminal. The system can be a mobile electronic device or a non-mobile electronic device. For example, mobile electronic devices can be mobile phones, tablets, laptops, PDAs, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), etc., while non-mobile electronic devices can be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc. This application embodiment does not make specific limitations.

[0090] The device corresponding to the control method of the energy-saving explosion-proof electrical cabinet in this application embodiment can be a device with an operating system. The operating system can be Android, iOS, or other possible operating systems, and this application embodiment does not specifically limit it.

[0091] The control method for the energy-saving explosion-proof electrical cabinet provided in this application embodiment can realize the various processes of the above embodiments. To avoid repetition, it will not be described again here.

[0092] Example 3 like Figure 4 As shown, this application embodiment also provides an electronic device 400, including a processor 401, a memory 402, and a program or instructions stored in the memory 402 and executable on the processor 401. When the program or instructions are executed by the processor 401, they implement the various processes of the above-described control method embodiment for energy-saving and explosion-proof electrical cabinets and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0093] It should be noted that the electronic devices in the embodiments of this application include mobile electronic devices and non-mobile electronic devices as described above.

[0094] Example 4 This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described control method embodiment for energy-saving and explosion-proof electrical cabinets and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0095] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0096] Example 5 This application also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described control method embodiment for energy-saving and explosion-proof electrical cabinets, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0097] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, chip system, or system-on-a-chip, etc.

[0098] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element. Furthermore, it should be noted that the scope of the methods and systems in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0099] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0100] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0101] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the claims.

Claims

1. An energy-saving explosion-proof electrical cabinet based on pressure storage compensation, characterized in that, The energy-saving explosion-proof electrical cabinet includes: The cabinet is used to install electrical components and form an explosion-proof sealed cavity; A pressure sensor is installed on the cabinet to detect the pressure value inside the cabinet in real time and output a pressure detection signal. The controller is electrically connected to the pressure sensor and is used to receive the pressure detection signal and output a first control command when the pressure detection signal is identified as being within a first preset range. A gas storage tank, electrically connected to the controller and in communication with the cabinet, is used to pre-store high-pressure gas and replenish gas to the inside of the cabinet according to the first control command; The controller is also configured to receive the pressure detection signal and, if the pressure detection signal is identified as a second preset range, output a second control command. The main gas source is electrically connected to the controller and connects the gas storage tank and the cabinet, and is used to replenish gas to the inside of the cabinet according to the second control command at a first preset power.

2. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The controller is also used for: The working time of the gas storage tank is obtained, and the internal gas storage capacity of the gas storage tank is determined based on the working time. If the internal gas storage volume is less than a set volume threshold, a third control command is output. The main gas source is used to replenish gas into the gas storage tank according to the second preset power based on the third control command.

3. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The energy-saving explosion-proof electrical cabinet also includes a controllable explosion relief device, which is installed on the cabinet body; The controller is also configured to receive the pressure detection signal and, upon identifying that the pressure detection signal has reached the pressure relief threshold, output a fourth control command. The controllable pressure relief device is electrically connected to the controller and is used to activate the pressure relief mode when the internal pressure of the cabinet reaches a preset value according to the fourth control command.

4. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The energy-saving and explosion-proof electrical cabinet also includes: A high-speed valve is installed on the connecting pipe between the gas storage tank and the cabinet and is electrically connected to the controller. It is used to adjust the flow rate and rate at which the gas storage tank replenishes the gas inside the cabinet according to the first control command.

5. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The energy-saving and explosion-proof electrical cabinet is equipped with at least two intersecting reinforcing ribs inside, which are used to divide the inner surface of the cabinet into multiple independent stress areas.

6. The energy-saving explosion-proof electrical cabinet based on storage pressure compensation according to claim 5, characterized in that, The spacing of the reinforcing ribs is 300mm-500mm, the thickness is 5mm-10mm, and they are connected to the inner surface of the cabinet.

7. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The controller is also used for: Obtain the basic design information of the energy-saving explosion-proof electrical cabinet, which includes basic cabinet parameters, explosion characteristic parameters, and environmental condition parameters. The normal pressure fluctuation range of the energy-saving explosion-proof electrical cabinet is determined based on the basic design information, and the lower limit of the damage pressure of the energy-saving explosion-proof electrical cabinet is calculated based on the basic parameters and explosion characteristic parameters of the cabinet. Based on the normal pressure fluctuation range and the lower limit of the damaged pressure, the pressure relief threshold of the controllable explosion relief device is set.

8. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The controller is also used for: Based on the explosion characteristic parameters and the basic parameters of the cabinet, the setting parameters of the reinforcing ribs inside the cabinet are determined.

9. The energy-saving explosion-proof electrical cabinet based on pressure compensation according to claim 1, characterized in that, The controller is also used for: If the pressure detection signal is identified as a third preset range, the coordinated working parameters of the gas storage tank and the main gas source are determined based on the pressure detection signal, so as to coordinately adjust the first control command and the second control command according to the coordinated working parameters.

10. A control method for an energy-saving explosion-proof electrical cabinet, characterized in that, The energy-saving explosion-proof electrical cabinet includes: a cabinet body, a controller, a pressure sensor, a gas storage tank, and a main gas source. The method is executed by the controller, and the method includes: The pressure sensor detects the pressure inside the cabinet in real time and receives the pressure detection signal. When the pressure detection signal is identified as being within a first preset range, a first control command is output to the gas storage tank, so that the gas storage tank replenishes gas into the cabinet according to the first control command. When the pressure detection signal is identified as falling within the second preset range, a second control command is output to the main gas source, which then replenishes gas into the cabinet according to the first preset power based on the second control command.

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