An active safety fire-fighting device for energy storage batteries in substations

Abstract

The utility model relates to an active safety fire-fighting device for energy storage batteries in a transformer substation, comprising an energy storage component, a control chassis, and a fire-extinguishing medium storage tank, wherein the energy storage component and the fire-extinguishing medium storage tank are connected to the control chassis through a control harness; wherein the energy storage component comprises an energy storage protection shell, an energy storage module is arranged at the bottom of the energy storage protection shell, a temperature control component is installed on the energy storage module, and the temperature control component is electrically connected to the control chassis; a plurality of fire-extinguishing nozzles are fixedly arranged on the top of the energy storage protection shell, the plurality of fire-extinguishing nozzles are interconnected through pipelines, and are connected to the fire-extinguishing medium storage tank; a first sensor and a first smoke sensor are cross-arranged between the fire-extinguishing nozzles, and at least two groups of electric air valves and a second smoke sensor are arranged on the side of the energy storage protection shell; a second sensor and a third sensor are also arranged on both sides of the bottom of the energy storage module through the energy storage protection shell, and the use of the device can effectively and actively prevent fires, quickly respond to fire extinguishing, and ensure the continuity of power supply.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power equipment, and particularly relates to an active safety fire-fighting device for energy storage batteries in a transformer substation. Background Art

[0002] At present, the DC integrated power supply of substations plays an important role in ensuring the stability of power supply. However, existing products generally lack effective fire-fighting measures. The battery pack is too large to occupy a large space in the main control building, which makes it impossible for some important substations to add a second set of AC / DC integrated power supply. The substation environment is complex and there are many electrical equipment. During the operation of the AC / DC integrated power supply, there is a risk of fire due to electrical failure, overheating and other reasons. Once a fire occurs, it will not only damage the power supply itself, causing the substation to lose backup power support, but it may also trigger a chain reaction, posing a serious threat to the safety of equipment and personnel in the entire substation.

[0003] Traditional passive fire fighting methods, such as fire extinguishers and fire hydrants, require manual operation after the fire is discovered. They have a slow response speed and are difficult to effectively control the fire in the early stages of the fire. They cannot meet the high requirements of substations for the safety performance of backup power supplies. Utility Model Content

[0004] The technical purpose of the utility model is to provide an active safety fire-fighting device for energy storage batteries in a substation, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a substation energy storage battery active safety fire protection device, comprising: an energy storage component, a control chassis, and a fire extinguishing medium storage tank, wherein the energy storage component is connected to the control chassis via a control harness, the energy storage component is used to convert and store electric energy, and the control chassis is used to adjust and control the energy storage component and the fire extinguishing medium storage tank;

[0006] Wherein, the energy storage component includes an energy storage protection shell, an energy storage module is arranged at the bottom of the energy storage protection shell, a temperature control component is installed on the energy storage module, and the temperature control component is electrically connected to the control chassis; a plurality of fire extinguishing nozzles are fixedly arranged on the top of the energy storage protection shell, and the plurality of fire extinguishing nozzles are interconnected through pipelines and communicated with the fire extinguishing medium storage tank; a first sensor and a first smoke sensor are cross-arranged between the two fire extinguishing nozzles, and an electric air valve and a second smoke sensor are also arranged on the side of the energy storage protection shell;

[0007] A second sensor and a third sensor are also arranged on both sides of the bottom of the energy storage module through the energy storage protection shell.

[0008] As a further improvement of the utility model, the control chassis includes: a battery management system BMS, a control unit;

[0009] The battery management system BMS is electrically connected to the energy storage module for monitoring and collecting voltage and current data of the energy storage module; the control unit is electrically connected to the first sensor, the third sensor, the second sensor, the first smoke sensor, the second smoke sensor, the electric air valve and the temperature control component respectively for monitoring, collecting and analyzing the status and environmental data of the energy storage module.

[0010] As a further improvement of the utility model, the control chassis further includes a charging and discharging unit and a fire extinguishing execution unit;

[0011] The signal input end of the fire extinguishing execution unit is electrically connected to the control unit, and the signal output end is electrically connected to the fire extinguishing medium storage tank; the charging and discharging unit is connected to the energy storage module wire.

[0012] As a further improvement of the present invention, the energy storage module is a plurality of lithium batteries connected by wires, and each of the lithium batteries is connected to the charging and discharging unit by a wire.

[0013] As a further improvement of the present invention, the temperature control component is composed of a plurality of temperature sensors, and the temperature sensors are fixedly arranged on the lithium battery to collect the temperature of the lithium battery.

[0014] As a further improvement of the present invention, the first sensor is a hydrogen sensor, and the second sensor and the third sensor are carbon dioxide sensors.

[0015] As a further improvement of the present invention, the first smoke sensor is horizontally fixed on the top of the energy storage protection shell; the second smoke sensor is installed at an angle of 30° to the electric air valve.

[0016] As a further improvement of the utility model, the fire extinguishing nozzles are installed at intervals of 0.5 meters on the upper side and the side of the energy storage protection shell; the interval between the fire extinguishing nozzles and the energy storage module is maintained at 0.3 meters to 0.5 meters.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Active fire prevention: Through real-time monitoring by multiple types of sensors, fire hazards can be discovered in time at the early stage and measures can be taken in advance to avoid fires;

[0019] 2. Rapid fire extinguishing response: Once a fire is detected, the fire extinguishing execution unit will be activated in a very short time to quickly control the fire and reduce fire losses;

[0020] 3. Ensure power supply continuity: effectively prevent fire from damaging the backup power supply, ensure that when the main power supply fails, the backup power supply can still supply power to the key equipment of the substation normally, and ensure the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of an active safety fire-fighting device for energy storage batteries in a substation;

[0022] Among them, 1. Control chassis; 2. Energy storage protective shell; 3. Energy storage component; 4. Fire extinguishing medium storage tank; 5. Fire extinguishing nozzle; 6. First sensor; 7. Temperature sensor; 8. First smoke sensor; 10. Second smoke sensor; 11. Electric air valve; 12. Third sensor; 13. Second sensor. DETAILED DESCRIPTION

[0023] See also Figure 1 As shown, a substation energy storage battery active safety fire protection device includes: an energy storage component 3, a control chassis 1, and a fire extinguishing medium storage tank 4. The energy storage component 3 is connected to the control chassis 1 through a control harness. The energy storage component 3 is used to convert and store electric energy. The control chassis 1 is used to adjust and control the energy storage component 3 and the fire extinguishing medium storage tank 4.

[0024] The energy storage component 3 includes an energy storage protective shell 2, an energy storage module is arranged at the bottom of the energy storage protective shell 2, a temperature control component is installed on the energy storage module, and the temperature control component is electrically connected to the control chassis 1; a plurality of fire extinguishing nozzles 5 are fixedly arranged on the top of the energy storage protective shell 2, and the plurality of fire extinguishing nozzles 5 are interconnected through pipelines and communicated with the fire extinguishing medium storage tank 4; a first sensor 6 and a first smoke sensor 8 are cross-arranged between the two fire extinguishing nozzles 5, and an electric air valve 11 and a second smoke sensor 10 are also arranged on the side of the energy storage protective shell 2;

[0025] A second sensor 13 and a third sensor 12 are further provided on both sides of the bottom of the energy storage module through the energy storage protection shell 2 .

[0026] When the energy storage substation is in normal operation, the second sensor 13, the third sensor 12 and the first sensor 6 collect the gas component content in the energy storage protective shell 2 in a layered manner to obtain a more accurate air component composition, so that the control chassis 1 can accurately judge the working environment of the energy storage module through the proportion of each gas component in the energy storage protective shell 2. At the same time, when the concentration of the air content component is not conducive to the operation of the energy storage module or is prone to cause a fire, the control chassis 1 adjusts the control electric air valve 11 to promote the exchange of gas in the energy storage protective shell 2 with the outside air, avoid the accumulation of combustible gas in the energy storage protective shell 2, and prevent the occurrence of a fire.

[0027] It should be noted that the control chassis 1 uses a temperature control component, a first smoke sensor 8, a second sensor 13, a third sensor 12 and a first sensor 6, and a built-in fire warning algorithm. The algorithm performs a comprehensive analysis based on multi-dimensional data such as temperature, smoke and gas concentration. When the data of a certain sensor exceeds the preset warning threshold, the control chassis 1 starts a preliminary warning and performs correlation analysis on other sensor data. If multiple sensor data are abnormal at the same time and meet the preset fire judgment logic, it is determined that a fire has occurred, and a control command is quickly issued to control the valve of the fire extinguishing medium storage tank 4 to open. The high-pressure fire extinguishing medium in the fire extinguishing medium storage tank 4 is transmitted through the pipeline and sprayed out under the action of the fire extinguishing nozzle 5, so that the energy storage module is completely covered with the fire extinguishing medium, blocking the fire propagation path while extinguishing the existing fire.

[0028] At the same time, during the fire extinguishing process, the electric air valve 11 is in a closed state under the control of the control box 1, cutting off the ventilation channel to prevent external oxygen from entering and aggravating the fire. After the fire is extinguished, the control box 1 determines that the fire has been extinguished and the environment is safe based on the environmental monitoring data, and issues a command to open the electric air valve 11 to discharge the fire extinguishing gas and smoke, so that the internal environment of the backup power supply returns to normal.

[0029] It should be explained that a reasonable fire warning threshold is set according to the operating environment and equipment characteristics of the energy storage module. The temperature warning threshold is set to 15-20°C higher than the normal operating temperature, the smoke concentration warning threshold is set to 0.5-1 mg per cubic meter, the carbon monoxide concentration warning threshold is set to 50-100 ppm, and the hydrogen concentration warning threshold is set to 100-200 ppm. At the same time, the association judgment logic of different sensor data is set. For example, when the temperature sensor 7 and the smoke sensor trigger the warning at the same time, and the gas sensor detects an increase in the concentration of the relevant gas, it is determined that a fire has occurred.

[0030] Through the above-mentioned method, the large-capacity lightweight substation AC / DC integrated power supply with active fire-fighting function can be ensured to operate stably and reliably, effectively improving the safety and reliability of the substation backup power supply, and providing strong guarantee for the stable operation of the power system.

[0031] As a preferred embodiment, the control box 1 includes: a battery management system BMS, a control unit;

[0032] The battery management system BMS is electrically connected to the energy storage module for monitoring and collecting the voltage and current data of the energy storage module; the control unit is electrically connected to the first sensor 6, the third sensor 12, the second sensor 13, the first smoke sensor 8, the second smoke sensor 10, the electric air valve 11 and the temperature control component respectively for monitoring, collecting and analyzing the state and environment of the energy storage module.

[0033] As a preferred embodiment, the control chassis 1 further includes a charging and discharging unit and a fire extinguishing execution unit;

[0034] The signal input end of the fire extinguishing execution unit is electrically connected to the control unit, and the signal output end is electrically connected to the fire extinguishing medium storage tank 4; the charging and discharging unit is connected to the energy storage module wire.

[0035] The control unit uses an industrial-grade high-performance microprocessor as the core control unit, which has powerful data processing capabilities and fast response speed, and has a built-in fire warning algorithm, which combines multi-dimensional data such as temperature, smoke and gas concentration for comprehensive analysis. When the data of a certain sensor exceeds the preset warning threshold, the control unit starts a preliminary warning and performs correlation analysis on other sensor data. If multiple sensor data are abnormal at the same time and meet the preset fire judgment logic, it is determined that a fire has occurred, and a control command is quickly issued to start the fire extinguishing execution module and related linkage equipment, and send fire alarm information to the substation fire monitoring center.

[0036] The charging and discharging unit uses a high-efficiency, high-stability switching power supply charging device, whose input voltage range adapts to the output of the substation main power supply and can meet the needs of substations with different voltage levels. It has an intelligent charging management function, which can automatically adjust the charging current and voltage according to the power status of the energy storage device, and adopts a constant current-constant voltage charging mode to ensure that the energy storage device is charged quickly and safely, while extending the service life of the energy storage device.

[0037] The fire sprinkler 5 uses a fine water mist sprinkler or a gas sprinkler. According to the internal space layout of the backup power supply and the fire risk assessment results, the sprinklers are reasonably arranged at a certain spacing and angle above and around the fire-prone parts such as the charging device and the energy storage device. The fire sprinkler 5 is made of stainless steel, which has corrosion resistance and high temperature resistance to ensure normal operation in a fire environment. The fire sprinkler 5 is connected to the fire extinguishing medium storage tank 4 through a high-pressure pipeline. An electromagnetic valve is installed on the pipeline, and the opening and closing of the valve is controlled by the control unit.

[0038] The material and structure of the fire extinguishing medium storage tank 4 vary depending on the selected fire extinguishing medium. If a gas fire extinguishing agent such as heptafluoropropane is used, a high-pressure seamless steel cylinder with good pressure resistance and sealing is used. The capacity of the fire extinguishing medium storage tank 4 is calculated and determined based on the internal space volume of the backup power supply and the fire extinguishing design concentration to ensure that sufficient fire extinguishing agent can be provided for fire extinguishing when a fire occurs. If a fine water mist fire extinguishing system is used, corrosion-resistant stainless steel is used, equipped with a high-pressure pump and a pressure stabilizing device to ensure that the fine water mist can be sprayed into the fire area at a suitable pressure and flow rate.

[0039] As a preferred embodiment, it is characterized in that: the energy storage module is a plurality of lithium batteries connected by wires, and each of the lithium batteries is connected to the charging and discharging unit by a wire; the temperature control component is composed of a plurality of temperature sensors 7, and the temperature sensor 7 is fixedly arranged on the lithium battery for collecting the temperature of the lithium battery.

[0040] The battery management system BMS monitors the voltage, current, temperature and other parameters of each lithium battery in the energy storage component 3 in real time, manages the battery pack in a balanced manner, prevents overcharging, overdischarging and overheating, and ensures the stable operation and safety of the battery pack. Large-capacity batteries and integrated design can greatly reduce the size of the device and reduce the occupied area.

[0041] Lithium batteries are used as energy storage modules, which have the advantages of high energy density, long cycle life, and good safety. Multiple single cells are connected in series and parallel. The capacity and voltage level of the battery pack are determined according to the backup power demand of the substation.

[0042] As a preferred embodiment, the first sensor 6 is a hydrogen sensor, the second sensor 13 and the third sensor 12 are carbon dioxide sensors; the first smoke sensor 8 is horizontally fixed on the top of the energy storage protective shell 2; the second smoke sensor 10 is installed at an angle of 30° to the electric air valve 11, so as to better detect the concentration of smoke entering or discharged from the electric air valve 11.

[0043] Since carbon dioxide is heavier than hydrogen, a second sensor 13 and a third sensor 12 are arranged at the bottom of the energy storage protection shell 2 to obtain a more accurate carbon dioxide content in the energy storage protection shell 2; similarly, a first sensor 6 is arranged at the top to obtain a more accurate hydrogen content in the energy storage protection shell 2. That is, through layered monitoring, the accuracy of data collection on the gas component content of the energy storage protection shell 2 is improved.

[0044] As a preferred embodiment, the fire extinguishing nozzle 5 is installed at intervals of 0.5 meters on the upper side and side of the energy storage protection shell 2 to ensure that the fire extinguishing agent can fully cover the entire area; the distance between the fire extinguishing nozzle 5 and the energy storage module is maintained at 0.3 meters to 0.5 meters to ensure the fire extinguishing effect. When installing the fire extinguishing nozzle 5, sealing tape should be used to ensure that it is tightly connected to the high-pressure pipeline to prevent leakage.

[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An active safety fire-fighting device for energy storage batteries in a substation, characterized in that: include: An energy storage component (3), a control chassis (1), and a fire extinguishing medium storage tank (4), wherein the energy storage component (3) and the control chassis (1) are connected via a control harness, the energy storage component (3) is used to convert and store electrical energy, and the control chassis (1) is used to regulate and control the energy storage component (3) and the fire extinguishing medium storage tank (4); The energy storage component (3) comprises an energy storage protective shell (2), an energy storage module is arranged at the bottom of the energy storage protective shell (2), a temperature control component is installed on the energy storage module, and the temperature control component is electrically connected to the control box (1); a plurality of fire extinguishing nozzles (5) are fixedly arranged on the top of the energy storage protective shell (2), the plurality of fire extinguishing nozzles (5) are interconnected through pipelines and communicated with the fire extinguishing medium storage tank (4); a first sensor (6) and a first smoke sensor (8) are cross-arranged between two of the fire extinguishing nozzles (5), and at least two groups of electric air valves (11) and a second smoke sensor (10) are arranged on the side of the energy storage protective shell (2); A second sensor (13) and a third sensor (12) are also arranged on both sides of the bottom of the energy storage module through the energy storage protection shell (2).

2. According to claim 1, a substation energy storage battery active safety fire protection device is characterized in that: The control box (1) comprises: a battery management system BMS and a control unit; The battery management system BMS is electrically connected to the energy storage module and is used to monitor and collect voltage and current data of the energy storage module; the control unit is electrically connected to the first sensor (6), the third sensor (12), the second sensor (13), the first smoke sensor (8), the second smoke sensor (10), the electric air valve (11) and the temperature control component respectively, and is used to monitor, collect and analyze the state and environment of the energy storage module.

3. According to claim 2, a substation energy storage battery active safety fire protection device is characterized in that: The control box (1) also includes a charging and discharging unit and a fire extinguishing execution unit; The signal input end of the fire extinguishing execution unit is electrically connected to the control unit, and the signal output end is electrically connected to the fire extinguishing medium storage tank (4); the charging and discharging unit is connected to the energy storage module wire.

4. The active safety fire-fighting device for energy storage batteries in a substation according to claim 3 is characterized in that: The energy storage module is a plurality of lithium batteries connected by wires, and each of the lithium batteries is connected to the charge and discharge unit by a wire.

5. The active safety fire-fighting device for energy storage batteries in a substation according to claim 4 is characterized in that: The temperature control component is composed of a plurality of temperature sensors (7), and the temperature sensors (7) are fixedly arranged on the lithium battery and are used to collect the temperature of the lithium battery.

6. The active safety fire-fighting device for energy storage batteries in a substation according to claim 1, characterized in that: The first sensor (6) is a hydrogen sensor, and the second sensor (13) and the third sensor (12) are carbon dioxide sensors.

7. The active safety fire-fighting device for energy storage batteries in a substation according to claim 1, characterized in that: The first smoke sensor (8) is horizontally fixed on the top of the energy storage protection shell (2); the second smoke sensor (10) is installed at an angle of 30° with the electric air valve (11).

8. The active safety fire-fighting device for energy storage batteries in a substation according to claim 1, characterized in that: The fire extinguishing nozzles (5) are installed on the upper side and the side of the energy storage protection shell (2) at intervals of 0.5 meters; the distance between the fire extinguishing nozzles (5) and the energy storage module is maintained at 0.3 meters to 0.5 meters.

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