Fire-fighting pipeline sealing detection system and energy storage liquid refrigerator

Abstract

The embodiment of the utility model provides a fire-fighting pipeline sealing detection system and an energy storage liquid refrigerator, and relates to the technical field of energy storage devices. The fire-fighting pipeline sealing detection system comprises a detection pipeline, a fire extinguishing agent tank and a vacuum pump, wherein the detection pipeline comprises a main pipeline and at least one branch pipeline; the fire extinguishing agent tank is provided with a pressure sensor; the vacuum pump is provided with a vacuum pump sensor; wherein the fire extinguishing agent tank is connected with the vacuum pump through a main pipeline, and a first valve is arranged between the fire extinguishing agent tank and the main pipeline; the branch pipeline is used for communicating the main pipeline with the battery box, and a second valve is arranged on the branch pipeline. By means of the fire-fighting pipeline sealing detection system, segmented air tightness detection can be carried out on the pipeline, the branch pipeline with the air leakage condition can be found and accurately found in time, the maintenance process is simplified, and the maintenance time is saved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage device technology, and more specifically, to a fire pipeline sealing detection system and an energy storage liquid cooler. Background Technology

[0002] With the rapid growth of the new energy industry, the application of lithium batteries in energy storage, whether for residential or commercial use, is developing rapidly. However, while the industry is making great strides, product safety has always been a concern for users, especially fire safety, which is a major focus. To address this issue, industry designers have incorporated various fire protection products into energy storage products, such as active fire suppression systems, passive fire suppression systems, and water fire suppression systems. Among these fire protection products, active fire suppression systems are the most widely used. Their principle is to use pumps or pressurized tanks to transport the fire suppression medium stored in the fire control panel to the battery box through fire pipelines, thereby achieving the fire suppression function.

[0003] However, the layout of these fire protection piping systems, after assembly with the products, makes it difficult to quickly and easily identify pipes with leaks. Furthermore, most of them do not have self-testing devices installed in the fire protection piping, requiring repeated plugging and unplugging of the fire protection piping to perform airtightness tests, which may lead to other problems. Utility Model Content

[0004] This invention provides a fire-fighting pipeline sealing detection system and an energy storage liquid cooler cabinet. It can perform segmented airtightness testing on pipelines to promptly and accurately identify and locate leaking branch pipes. It also facilitates targeted maintenance by operators, simplifying the maintenance process and saving maintenance time. Furthermore, the detection system is integrated with the fire-fighting pipeline, eliminating the need for repeated disconnection and reconnection of the testing pipes. This prevents leaks from recurring after airtightness testing, thus preventing significant losses in the event of thermal runaway in the energy storage cabinet where missing or leaking fire-fighting pipelines could prevent the delivery of extinguishing agents to the corresponding battery boxes.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a fire pipeline sealing detection system, which includes:

[0007] A testing pipeline, the testing pipeline comprising a main pipeline and at least one branch pipeline;

[0008] Fire extinguishing agent container, wherein the fire extinguishing agent container is equipped with a pressure sensor;

[0009] A vacuum pump, wherein the vacuum pump is equipped with a vacuum pump sensor;

[0010] The fire extinguishing agent tank and the vacuum pump are connected through the main pipeline, and a first valve is provided between the fire extinguishing agent tank and the main pipeline; the branch pipeline is used to connect the main pipeline and the battery box, and a second valve is provided on the branch pipeline.

[0011] In an optional embodiment, there are multiple branch pipes and multiple second valves; the multiple branch pipes are arranged in parallel.

[0012] Each of the second valves includes a first valve port, a second valve port, and a third valve port. The first valve port is connected to the main pipeline near the extinguishing agent tank, the second valve port is connected to the main pipeline near the vacuum pump, and the third valve port is connected to the corresponding branch pipeline.

[0013] In an optional implementation, when the airtightness of each branch pipe is tested, the first valve port and the third valve port of the second valve of the corresponding branch pipe are connected, and the second valve port is closed; the vacuum pump is in operation.

[0014] In an optional embodiment, the fire pipeline sealing detection system further includes a three-way valve and a fire sprinkler head. The three-way valve includes a fourth valve port, a fifth valve port, and a sixth valve port. The fourth valve port is connected to the first valve, the fifth valve port is connected to the branch pipeline near the extinguishing agent tank, and the sixth valve port is connected to the fire sprinkler head.

[0015] In an optional embodiment, the fire pipeline sealing detection system further includes a control unit, which is electrically connected to the first valve, the second valve and the vacuum pump, and is used to control the operation of the first valve, the second valve and the vacuum pump.

[0016] In an optional implementation, the control unit is provided with indicator lights.

[0017] In an optional implementation, the second valve is a three-way electric ball valve.

[0018] An embodiment of this utility model also provides an energy storage liquid cooler, including a cabinet, a fire pipeline sealing detection system as described in any of the above embodiments, and at least one battery box, wherein each of the branch pipelines is connected to at least one of the battery boxes; the fire pipeline sealing detection system and the battery box are both disposed within the cabinet.

[0019] In an optional embodiment, the fire pipeline sealing detection system further includes a smoke generator, which is located at one end of the main pipeline near the vacuum pump and is connected in parallel with the vacuum pump; a smoke temperature sensor is installed inside the battery box.

[0020] In an optional embodiment, the energy storage liquid cooler further includes a battery management system connected to the battery box.

[0021] The beneficial effects of the fire-fighting pipeline sealing detection system and energy storage liquid cooler of this utility model embodiment include, for example:

[0022] This fire pipeline sealing detection system includes a detection pipeline, a fire extinguishing agent tank, and a vacuum pump. The detection pipeline includes a main pipeline and at least one branch pipeline. The fire extinguishing agent tank is equipped with a pressure sensor, and the vacuum pump is equipped with a vacuum pump sensor. The fire extinguishing agent tank and the vacuum pump are connected via the main pipeline, and a first valve is installed between the fire extinguishing agent tank and the main pipeline. The branch pipeline connects the main pipeline and the battery box, and a second valve is installed on the branch pipeline. When the detection system is in the airtightness detection state, it determines whether the pressure signal of the fire extinguishing agent tank is within a reasonable range based on the real-time data collected by the pressure sensor, and then tests whether the second valve in the detection pipeline can function properly. Under normal conditions, the branch pipe to be tested is connected to the main pipe between the branch pipe and the vacuum pump, while the main pipe between the branch pipe and the extinguishing agent tank is disconnected. The vacuum pump is then started to evacuate this section of pipe. After a period of time, a vacuum pump sensor is used to detect the vacuum level in this section of pipe. If the detected vacuum level is less than the set value, it indicates that the airtightness of this section of pipe and the battery box of this branch is good, with no risk of leakage. If the detected vacuum level is greater than the set value, it indicates that the airtightness of this section of pipe and the battery box of this branch is poor, with a risk of leakage. The fire pipeline sealing detection system designed above can perform segmented airtightness testing on pipelines, promptly and accurately identifying and locating branch pipes with leaks. It also facilitates targeted maintenance by operators, simplifying the maintenance process and saving maintenance time. Furthermore, the detection system is integrated with the fire protection pipeline, eliminating the need for repeated plugging and unplugging of the detection pipeline. This prevents leaks from occurring after the airtightness test, thus preventing significant losses in the event of thermal runaway of the energy storage cabinet if the fire protection pipeline is missing or leaking, which could prevent the fire extinguishing medium from being delivered to the corresponding battery box. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the energy storage liquid cooler provided in an embodiment of this utility model;

[0025] Figure 2This is a schematic diagram of the fire pipeline sealing detection system provided in an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the second valve provided in an embodiment of the present invention;

[0027] Figure 4 This is a block diagram of the control system provided in an embodiment of the present invention.

[0028] Icons: 1000 - Energy Storage Liquid Cooler; 100 - Fire Pipeline Sealing Inspection System; 110 - Inspection Pipeline; 111 - Main Pipeline; 112 - Branch Pipeline; 1121 - First Branch Pipeline; 1122 - Second Branch Pipeline; 1123 - Third Branch Pipeline; 1124 - Fourth Branch Pipeline; 1125 - Fifth Branch Pipeline; 120 - Fire Extinguishing Agent Tank; 130 - Second Valve; 131 - First Electric Valve; 1311 - First Valve Port; 1312 - Second Valve Port; 1313 - Third Valve Port; 132 - Second Electric Valve; 133 - Third Electric Valve 134-Fourth electric valve; 135-Fifth electric valve; 140-Pressure sensor; 150-Vacuum pump; 151-Vacuum pump sensor; 160-Smoke generator; 170-Three-way valve; 171-Fourth valve port; 172-Fifth valve port; 173-Sixth valve port; 180-Fire sprinkler head; 190-First valve; 200-Battery box; 210-Smoke and temperature sensor; 300-Cabinet; 400-Battery management system; 500-High-voltage box; 600-Thermal management unit; 700-Control unit; 710-Indicator light. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] With the rapid growth of the new energy industry, the application of lithium batteries in energy storage, whether for residential or commercial use, is developing rapidly. However, while the industry is making great strides, product safety has always been a concern for users, especially fire safety, which is a major focus. To address this issue, industry designers have incorporated various fire protection products into energy storage products, such as active fire suppression systems, passive fire suppression systems, and water fire suppression systems. Among these fire protection products, active fire suppression systems are the most widely used. Their principle is to use pumps or pressure tanks to transport the fire suppression medium stored in the fire control panel to the battery box 200 through fire pipelines, thereby achieving the fire suppression function.

[0036] To facilitate the layout of the system's fire protection piping, the piping from the fire control panel to the battery pack is not a single, customized, complete pipeline. Instead, it is assembled from several pipe branches and three-way valves 170. Although some sections of the piping can be tested for air tightness using internal specialized equipment before the product leaves the factory, the battery box 200 often needs to be disassembled and maintained after the product is put into use. This requires repeated plugging and unplugging of the fire protection piping, which can lead to poor contact between the piping and the three-way valves 170, resulting in air leaks at the joints. In addition, maintenance personnel may forget to reinstall these pipes after plugging and unplugging them. Because fire protection piping does not require as frequent operation as liquid cooling pipes or power lines, maintenance personnel may not notice if the fire protection piping is not restored in time or if a leak occurs. If thermal runaway occurs in the cabinet later, the fire protection piping, due to missing parts or leaks, may prevent the fire extinguishing medium from being delivered to the corresponding battery box 200, resulting in significant losses.

[0037] The fire protection piping layouts of these systems, after being assembled with the products, make it difficult to quickly and easily identify pipes with leaks. Furthermore, most of them lack self-testing devices, requiring repeated plugging and unplugging of the fire protection piping to perform airtightness tests, which may lead to other problems.

[0038] Based on this, please refer to Figure 1 and Figure 2 The fire-fighting pipeline sealing detection system 100 provided in this embodiment of the present invention can effectively improve the aforementioned technical problems. This system can perform segmented airtightness testing on the pipeline, promptly and accurately identifying and locating leaking branch pipes 112. It also facilitates targeted maintenance by operators, simplifying the maintenance process and saving maintenance time. Furthermore, the detection system is integrated with the fire-fighting pipeline, eliminating the need for repeated insertion and removal of the testing pipe 110. This prevents leaks from recurring after airtightness testing, thus preventing significant losses in the event of thermal runaway in the energy storage cabinet where the fire-fighting pipeline is missing or leaking, preventing the extinguishing medium from being unable to reach the corresponding battery box 200. The fire-fighting pipeline sealing detection system 100 in this embodiment is mainly applied to the energy storage liquid cooler 1000. However, it can also be applied to other equipment requiring fire-fighting pipelines, and is not limited here. All equipment equipped with this fire-fighting pipeline sealing detection system 100 has the same functions as described above, and will not be elaborated further here.

[0039] Figure 1 This is a schematic diagram of the energy storage liquid cooler 1000 provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the fire pipeline sealing detection system 100 provided in an embodiment of the present invention, as shown below. Figure 1 and Figure 2As shown, the energy storage liquid cooler 1000 in this embodiment includes a cabinet 300, a fire pipeline sealing detection system 100, and at least one battery box 200. Each branch pipe 112 is connected to at least one battery box 200. The fire pipeline sealing detection system 100 and the battery box 200 are both located inside the cabinet 300. In this embodiment, each branch pipe 112 can connect to one battery box 200. Of course, each branch pipe 112 can also connect to multiple battery boxes 200 in parallel via valves. Multiple partitions are provided inside the cabinet 300, spaced apart along the height of the cabinet 300, dividing the cabinet 300 into multiple spatial units, each containing one battery box 200. A fire extinguishing agent tank 120 is located on the top layer of the cabinet 300 so that in the event of thermal runaway of the battery box 200, fire extinguishing medium can be sprayed onto all spatial units within the cabinet 300, thereby ensuring safety. The energy storage liquid cooler 1000 in this embodiment also includes a battery management system 400, which is connected to the battery box 200. The battery management system 400 is used to detect the status of each battery box 200 and control charging and discharging, etc., to ensure the safety and performance of each battery box 200.

[0040] Figure 4 This is a block diagram of the control system provided in an embodiment of this utility model. For instructions on performing an airtightness test on the fire protection piping, please refer to... Figure 1 and Figure 2 and combined Figure 4 To further test the smoke alarm performance of the battery box 200, the fire pipeline sealing test system 100 in this embodiment also includes a smoke generator 160. The smoke generator 160 is located at the end of the main pipeline 111 near the vacuum pump 150, and the smoke generator 160 is connected in parallel with the vacuum pump 150. A smoke and temperature sensor 210 is installed inside the battery box 200. After the airtightness test of the fire pipeline is completed, the smoke generator 160 is started, and the smoke is transmitted to each battery box 200 through the main pipeline 111 and the branch pipeline 112. The battery management system 400 monitors the signal of the smoke and temperature sensor 210 in each battery box 200 in real time. If the smoke and temperature sensor 210 in each battery box 200 sends an alarm signal, it means that all the smoke and temperature sensors 210 are functioning normally. After the test is completed, the vacuum pump 150 is started to extract all the smoke from the pipeline and the battery box 200. The fire system is then taken out of maintenance mode after the vacuum degree in the pipeline reaches the required level.

[0041] The energy storage liquid-cooled cabinet 1000 in this embodiment also includes a high-voltage box 500, an inverter, and a thermal management unit 600. The high-voltage box 500, inverter, and thermal management system are all housed within the cabinet 300, and the thermal management unit 600 is connected to all battery boxes 200. Of course, other structural devices may be installed in the energy storage liquid-cooled cabinet 1000 according to actual usage functions, which are not limited here.

[0042] The following is a detailed introduction to the fire pipeline sealing detection system 100.

[0043] Please see Figure 2 The fire pipeline sealing detection system 100 in this embodiment includes a detection pipeline 110, a fire extinguishing agent tank 120, and a vacuum pump 150. The detection pipeline 110 includes a main pipeline 111 and at least one branch pipeline 112. The fire pipeline sealing detection system 100 includes a detection pipeline 110, a fire extinguishing agent tank 120, and a vacuum pump 150. The detection pipeline 110 includes a main pipeline 111 and at least one branch pipeline 112. The fire extinguishing agent tank 120 is equipped with a pressure sensor 140. The vacuum pump 150 is equipped with a vacuum pump sensor 151. The fire extinguishing agent tank 120 and the vacuum pump 150 are connected through the main pipeline 111, and a first valve 190 is provided between the fire extinguishing agent tank 120 and the main pipeline 111. The branch pipeline 112 is used to connect the main pipeline 111 and the battery box 200, and a second valve 130 is provided on the branch pipeline 112. When the detection system is in the airtightness detection state, it determines whether the pressure signal of the extinguishing agent tank 120 is within a reasonable range based on the real-time data collected by the pressure sensor 140. Then, it tests whether the second valve 130 in the detection pipeline 110 can work normally. If both are normal, the main pipeline 111 between the branch pipeline 112 to be tested and the vacuum pump 150 is in a connected state, while the main pipeline 111 between the branch pipeline 112 and the extinguishing agent tank 120 is in a disconnected state. Then, the vacuum pump 150 is started to evacuate the pipeline section. After a period of time, the vacuum pump 150 sensor detects the vacuum level in the pipeline section. If the detected vacuum level is less than the set value, it indicates that the airtightness of the pipeline section and the battery box 200 of the branch is good, and there is no risk of leakage. If the detected vacuum level is greater than the set value, it indicates that the airtightness of the pipeline section and the battery box 200 of the branch is poor, and there is a risk of leakage. In this embodiment, the first valve 190 between the extinguishing agent tank 120 and the main pipeline 111 is a solenoid valve. Of course, it can also be replaced by an electric valve or a manual valve, which is not limited here.

[0044] The fire pipeline sealing detection system 100 designed above can perform segmented airtightness testing on the pipeline, promptly and accurately identifying and locating branch pipelines 112 where leaks occur. This also facilitates targeted maintenance by operators, simplifying the maintenance process and saving maintenance time. Furthermore, the detection system is integrated with the fire pipeline, eliminating the need for repeated insertion and removal of the testing pipeline 110. This prevents leaks from recurring after airtightness testing, thus preventing significant losses in the event of thermal runaway of the energy storage cabinet if the fire pipeline is missing or leaking, preventing the extinguishing medium from being unable to reach the corresponding battery box 200.

[0045] Please continue reading Figure 2In this embodiment, there are multiple branch pipes 112 and multiple second valves 130; the multiple branch pipes 112 are arranged in parallel; each second valve 130 includes a first valve port 1311, a second valve port 1312, and a third valve port 1313. The first valve port 1311 is connected to the main pipe 111 near the extinguishing agent tank 120, that is, the first valve port 1311 is connected to the end of the main pipe 111 near the extinguishing agent tank 120; the second valve port 1312 is connected to the main pipe 111 near the vacuum pump 150, that is, the second valve port 1312 is connected to the end of the main pipe 111 near the vacuum pump 150; the third valve port 1313 is connected to one end of the corresponding branch pipe 112. When the airtightness of each branch pipe 112 is checked, the first valve port 1311 and the third valve port 1313 of the second valve 130 of the corresponding branch pipe 112 are connected, the second valve port 1312 is closed, and the vacuum pump 150 is in working condition. Specifically, in this embodiment, there are five branch pipes 112 and five second valves 130. The five branch pipes 112 are arranged side by side between the extinguishing agent tank 120 and the vacuum pump 150, and one end of each branch pipe 112 is connected to the main pipe 111 through the second valve 130. The other end of the branch pipe 112 is used to connect to the battery box 200. For ease of control and to improve control accuracy, the second valve 130 in this embodiment is an electric valve. Of course, other types of valves can also be used for the second valve 130, which is not limited here.

[0046] To ensure the safety of the energy storage liquid cooler 1000, in the event of thermal runaway within the energy storage liquid cooler 1000, the fire extinguishing agent tank 120 can also spray extinguishing media to other areas within the cabinet 300 besides the detection pipeline 110 and the battery box 200. The fire pipeline sealing detection system 100 in this embodiment also includes a three-way valve 170 and a fire sprinkler head 180. The three-way valve 170 includes a fourth valve port 171, a fifth valve port 172, and a sixth valve port 173. The fourth valve port 171 is connected to the first valve 190, the fifth valve port 172 is connected to the branch pipeline 112 near the fire extinguishing agent tank 120, and the sixth valve port 173 is connected to the fire sprinkler head 180. The three-way valve 170 can distribute the amount of extinguishing media flowing from the fire extinguishing agent tank 120 into the battery box 200 and the amount sprayed into the cabinet 300 via the fire sprinkler head 180 to meet specific usage requirements.

[0047] Figure 3 For a schematic diagram of the second valve 130 provided in an embodiment of this utility model, please refer to [link / reference]. Figure 3In this embodiment, the second valve 130 is a three-way electric ball valve. Electric ball valves offer advantages such as high efficiency, precise control, original control design, high reliability, low fluid resistance, good leak-proof performance, and long service life. Using an electric ball valve allows for rapid opening and closing of the valve, thereby improving production efficiency. Electric ball valves have a simple structure, few moving parts, and high reliability, ensuring long-term stable operation. Furthermore, the flow channel design of electric ball valves is reasonable, resulting in low fluid resistance and reducing energy loss. Of course, other three-way second valves 130, such as electric butterfly valves, can also be used; this is not a limitation.

[0048] To facilitate the control of individual electrical components and achieve closed-loop control, please refer to [link / reference needed]. Figure 4 The fire pipeline sealing detection system 100 in this embodiment also includes a control unit 700. The control unit 700 is electrically connected to the first valve 190, the second valve 130, and the vacuum pump 150, and is used to control the operation of the first valve 190, the second valve 130, and the vacuum pump 150. All actuators in the detection circuit in this embodiment are controlled by the control unit 700, and the control unit 700 can communicate with the battery management system 400 to better perform airtightness detection and other fire performance tests. To clearly identify whether there is a fault in the detection pipeline 110, the control unit 700 in this embodiment is equipped with an indicator light 710. When the vacuum level in the detection pipeline 110 is found to be below the preset condition, the control unit 700 reports a fault and illuminates the fault indicator light 710. Under normal circumstances, the indicator light 710 is green; under abnormal circumstances, the indicator light 710 is red. Of course, the indicator light 710 can also be set to illuminate only under abnormal circumstances; this is not limited here.

[0049] Taking five branch pipes 112 as an example, the multiple branch pipes 112 include a first branch pipe 1121, a second branch pipe 1122, a third branch pipe 1123, a fourth branch pipe 1124, and a fifth branch pipe 1125 arranged in parallel. The first branch pipe 1121 is closer to the vacuum pump 150 than the fifth branch pipe 1125. The second valve 130 includes a first electric valve 131, a second electric valve 132, a third electric valve 133, a fourth electric valve 134, and a fifth electric valve 135, with each second valve 130 corresponding to one branch pipe 112. The airtightness detection process of the five branch pipes 112 in this embodiment is as follows:

[0050] After entering the fire protection system maintenance state, the battery management system 400 shuts off the first valve 190 of the extinguishing agent tank 120; then, the control unit 700 checks each of the second valves 130 to see if they respond; if any valve does not respond, a fault is reported, and the fault indicator light 710 illuminates; if all valves respond, the next step of testing is performed. All second valves 130 are adjusted to the state where the first valve port 1311 and the third valve port 1313 are connected, and the second valve port 1312 is closed. First, the airtightness of the first branch pipe 1121 closest to the vacuum pump 150 is tested. The vacuum pump 150 is started, and after a certain interval, the control unit 700 starts to detect the vacuum level in the pipe. If the vacuum level is greater than the set value N, the first branch pipe 1121 has a leak and needs to be repaired. If the vacuum level is less than the set value N, the first branch pipe 1121 does not have a leak. At this time, the vacuum pump 150 is stopped, and the first electric valve 131 is controlled to be in a state where the first valve port 1311, the second valve port 1312, and the third valve port 1313 are all open, so as to test the airtightness of the second branch pipe 1122. After the first electric valve 131 connects the main pipeline 111 and the second branch pipeline 1122, the vacuum pump 150 is started. After a certain interval, the control unit 700 begins to detect the vacuum level in pipeline 110. If the vacuum level is greater than the set value N, there is a leak in the second branch pipeline 1122, which needs to be repaired. If the vacuum level is less than the set value N, there is no leak in the second branch pipeline 1122. At this time, the vacuum pump 150 is stopped, and the second electric valve 132 is controlled to be in a state where the first valve port 1311, the second valve port 1312, and the third valve port 1313 are all open, so as to perform an airtightness test on the third branch pipeline 1123. This process is repeated for each branch pipeline until all branch pipelines 112 have been tested. Here, the vacuum pump 150 starts after a certain interval, which is 5 seconds in this embodiment. Of course, other intervals such as 6 seconds, 10 seconds, and 15 seconds can also be used, and no limitation is made here.

[0051] After the airtightness test of all branch pipes 112 is completed, all second valves 130 are kept in the open state, i.e., connected to the main pipe 111. The control unit 700 controls the vacuum pump 150 to stop working and starts the smoke generator 160. After a certain interval, the smoke temperature sensor 210 in the battery box 200 starts to detect the smoke concentration in the battery box 200 and sends an alarm signal. In this embodiment, the interval is 10 seconds. Of course, other intervals such as 15 seconds or 20 seconds can also be used, and are not limited here. If the battery management system 400 does not receive alarm signals from each branch pipe 112, it locates which branch pipe is faulty and performs maintenance. If the battery management system 400 receives alarm signals from all branch pipes 112, the control unit 700 controls the smoke generator 160 to shut down and starts the vacuum pump 150 to remove the smoke from the pipes. After a period of time, the vacuum level in the pipes 110 is checked. If the vacuum level is greater than the set value N, the check is repeated after a certain interval until the vacuum level is less than the set value N. Then, the control unit 700 controls the vacuum pump 150 to shut down and sends a signal to remove the entire system from the fire protection system maintenance state.

[0052] In summary, the fire pipeline sealing detection system 100 includes a detection pipeline 110, a fire extinguishing agent tank 120, and a vacuum pump 150. The detection pipeline 110 includes a main pipeline 111 and at least one branch pipeline 112. The fire extinguishing agent tank 120 is equipped with a pressure sensor 140. The vacuum pump 150 is equipped with a vacuum pump 150 sensor. The fire extinguishing agent tank 120 and the vacuum pump 150 are connected through the main pipeline 111, and a first valve 190 is installed between the fire extinguishing agent tank 120 and the main pipeline 111. The branch pipeline 112 connects the main pipeline 111 and the battery box 200, and a second valve 130 is installed on the branch pipeline 112. When the detection system is in the airtightness detection state, it determines whether the pressure signal of the fire extinguishing agent tank 120 is within a reasonable range based on the real-time data collected by the pressure sensor 140, and then tests whether the second valve 130 in the detection pipeline 110 can work normally. Under normal conditions, the main pipeline 111 between the branch pipe 112 to be tested and the vacuum pump 150 is in a connected state, while the main pipeline 111 between the branch pipe 112 and the fire extinguishing agent tank 120 is in a disconnected state. Then, the vacuum pump 150 is started to evacuate the section of pipeline. After a period of time, the vacuum level in the section of pipeline is detected using the vacuum pump 150 sensor. If the detected vacuum level is less than the set value, it indicates that the airtightness of the section of pipeline and the battery box 200 of the branch pipe is good, and there is no risk of leakage. If the detected vacuum level is greater than the set value, it indicates that the airtightness of the section of pipeline and the battery box 200 of the branch pipe is poor, and there is a risk of leakage. The fire pipeline sealing detection system 100 designed above can perform segmented airtightness detection of the pipeline, so as to promptly detect and accurately locate the branch pipe 112 where leakage occurs. At the same time, it facilitates operators to perform point-to-point maintenance, simplifies the maintenance process, and saves maintenance time. Furthermore, the detection system is integrated with the fire protection pipeline, eliminating the need for repeated plugging and unplugging of the detection pipeline 110. This prevents leaks from occurring after the airtightness test, thus preventing significant losses in the event of thermal runaway of the energy storage cabinet if the fire protection pipeline is missing or leaking, which could prevent the fire extinguishing medium from being delivered to the corresponding battery box 200.

[0053] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A fire-fighting pipeline sealing detection system, characterized in that, include: The detection pipeline (110) includes a main pipeline (111) and at least one branch pipeline (112); Fire extinguishing agent container (120), wherein the fire extinguishing agent container (120) is equipped with a pressure sensor (140); A vacuum pump (150) is provided with a vacuum pump sensor (151); The fire extinguishing agent tank (120) and the vacuum pump (150) are connected through the main pipeline (111), and a first valve (190) is provided between the fire extinguishing agent tank (120) and the main pipeline (111); the branch pipeline (112) is used to connect the main pipeline (111) and the battery box (200), and a second valve (130) is provided on the branch pipeline (112).

2. The fire pipeline sealing detection system according to claim 1, characterized in that, The number of branch pipes (112) and the number of the second valves (130) are both multiple; the multiple branch pipes (112) are arranged in parallel; Each of the second valves (130) includes a first valve port (1311), a second valve port (1312), and a third valve port (1313). The first valve port (1311) is connected to the main pipeline (111) near the fire extinguishing agent tank (120), the second valve port (1312) is connected to the main pipeline (111) near the vacuum pump (150), and the third valve port (1313) is connected to the corresponding branch pipeline (112).

3. The fire pipeline sealing detection system according to claim 2, characterized in that, When the airtightness of each branch pipe (112) is tested, the first valve port (1311) and the third valve port (1313) of the second valve (130) of the corresponding branch pipe (112) are connected, the second valve port (1312) is closed, and the vacuum pump (150) is in working condition.

4. The fire pipeline sealing detection system according to claim 1, characterized in that, The fire pipeline sealing detection system (100) also includes a three-way valve (170) and a fire sprinkler head (180). The three-way valve (170) includes a fourth valve port (171), a fifth valve port (172), and a sixth valve port (173). The fourth valve port (171) is connected to the first valve (190), the fifth valve port (172) is connected to the branch pipeline (112) near the fire extinguishing agent tank (120), and the sixth valve port (173) is connected to the fire sprinkler head (180).

5. The fire pipeline sealing detection system according to claim 1, characterized in that, The fire pipeline sealing detection system (100) also includes a control unit (700), which is electrically connected to the first valve (190), the second valve (130) and the vacuum pump (150), and is used to control the operation of the first valve (190), the second valve (130) and the vacuum pump (150).

6. The fire pipeline sealing detection system according to claim 5, characterized in that, The control unit (700) is equipped with an indicator light (710).

7. The fire pipeline sealing detection system according to any one of claims 1-6, characterized in that, The second valve (130) is a three-way electric ball valve.

8. An energy storage liquid cooler, characterized in that, The device includes a cabinet (300), a fire pipeline sealing detection system (100) as described in any one of claims 1-7, and at least one battery box (200), wherein each of the branch pipes (112) is connected to at least one of the battery boxes (200); the fire pipeline sealing detection system (100) and the battery box (200) are both disposed within the cabinet (300).

9. The energy storage liquid cooler according to claim 8, characterized in that, The fire pipeline sealing detection system (100) also includes a smoke generator (160), which is located at one end of the main pipeline (111) near the vacuum pump (150) and is connected in parallel with the vacuum pump (150); a smoke temperature sensor (210) is installed in the battery box (200).

10. The energy storage liquid cooler according to claim 9, characterized in that, The energy storage liquid cooler (1000) also includes a battery management system (400), which is connected to the battery box (200).

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