Water quantity measuring system for storage tank fire drill

Abstract

A water volume measuring system for storage tank fire drill comprises a reservoir arranged at the top of a storage tank and used for accommodating fire-fighting spray water; the measuring device is arranged in the reservoir, the measuring device comprises a containing cavity and a liquid level switch arranged in the containing cavity, and the liquid level switch is used for detecting the water level in the containing cavity and generating a liquid level detection signal; the drainage pipe is respectively communicated with the bottom of the reservoir and the bottom of the accommodating cavity, and the water level in the accommodating cavity is used for representing the water level in the reservoir; and the controller is coupled with the liquid level switch to receive the liquid level detection signal generated by the liquid level switch. By means of the scheme, the real-time performance, stability and accuracy of measurement of the fire-fighting water spraying amount during storage tank fire-fighting drilling can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a water volume measuring system used for fire fighting drills in storage tanks. Background Art

[0002] During fire drills and competition assessments, it is necessary to quantify firefighting operations and results of firefighters and evaluate their firefighting capabilities.

[0003] At present, in the fire-fighting water-shooting drills and competitions on the top of vertical storage tanks, most of them are scored by subjective experience experts in the fire-fighting field, and a few are evaluated by collecting the weight of the fire-fighting water sprayed or directly installing a liquid level meter on the top of the tank.

[0004] In actual applications, the above scoring or evaluation methods have the following defects: the scoring results are based solely on the subjective experience of firefighting experts on the firefighting drills, which lack stability and are highly subjective, making it difficult to accurately assess the firefighting capabilities of firefighters; the method of measuring the weight of water spraying requires time to collect water for firefighting, and the measurement lacks real-time performance; the method of measuring the water level with a liquid level meter results in huge measurement errors due to the waves and vibrations generated when spraying water, making it impossible to accurately measure. Utility Model Content

[0005] The technical problem solved by the utility model is how to improve the real-time performance, stability and accuracy of measuring the amount of fire water sprayed during fire drills of storage tanks.

[0006] To solve at least one of the above-mentioned technical problems, an embodiment of the utility model provides a water quantity measurement system for a storage tank fire drill, comprising: a water reservoir, arranged at the top of the storage tank, the water reservoir being used to accommodate fire spray; a measuring device, arranged in the water reservoir, the measuring device comprising a accommodating cavity and a liquid level switch arranged in the accommodating cavity, the liquid level switch being used to detect the water level in the accommodating cavity and generate a liquid level detection signal; a drainage pipe, respectively connecting the bottom of the water reservoir and the bottom of the accommodating cavity, the water level in the accommodating cavity being used to characterize the water level in the water reservoir; and a controller, coupled to the liquid level switch to receive the liquid level detection signal generated by the liquid level switch.

[0007] Optionally, the diameter of the drainage tube is not greater than DN25.

[0008] Optionally, the drainage tube includes a buffer section, and the buffer section is a coil or a zigzag extension.

[0009] Optionally, the measuring device comprises a shell, the housing cavity is formed in the shell, the shell is a double-layer structure and a heat insulation layer is filled between the double-layer structure.

[0010] Optionally, the double-layer structure is made of weather-resistant steel or stainless steel.

[0011] Optionally, the heat insulation layer is made of thermal insulation material or water.

[0012] Optionally, the liquid level switch is a proximity switch, and a floating object that can be sensed by the proximity switch is placed in the accommodating cavity.

[0013] Optionally, the liquid level switch includes a timer, and the timer is used to time the duration for the water level in the accommodating chamber to reach a target water level.

[0014] Optionally, the measuring device further comprises: an adjusting mechanism, which is mounted in the accommodating cavity, and the adjusting mechanism is used to adjust the height of the liquid level switch relative to the bottom of the measuring device.

[0015] Optionally, the prompt device includes a plurality of sound and light alarms, and the plurality of sound and light alarms are distributed around the storage tank.

[0016] Optionally, the prompt device includes a plurality of sound and light alarms, and the plurality of sound and light alarms are distributed around the storage tank.

[0017] Optionally, the water reservoir is isolated from the storage cavity of the storage tank.

[0018] Optionally, the water volume measurement system further includes: a drain valve, which is arranged at the bottom of the water reservoir or at a position of the side wall of the water reservoir close to the storage tank, and the bottom wall of the water reservoir extends downwardly from the edge toward the drain valve.

[0019] Optionally, the water quantity measurement system further includes: a fire simulation device, arranged in the water reservoir and coupled to the controller, wherein the fire simulation device ignites or extinguishes a fire under the control of the controller.

[0020] Compared with the prior art, the technical solution of the embodiment of the utility model has the following beneficial effects:

[0021] By adopting the technical solution of the embodiment of the present application, a water reservoir, a drainage pipe and a measuring device are formed into a communicating vessel, so that the water guided into the containing chamber through the drainage pipe is less affected by the vibration and waves caused by the fire water spraying process. Therefore, under the principle of the communicating vessel, the water level in the containing chamber can more accurately and effectively reflect the actual water level in the water reservoir.

[0022] Furthermore, the measuring device and the drainage pipe are both arranged on the storage tank. During the fire drill, the water level in the containing chamber and the water level in the reservoir basically keep changing synchronously, thus realizing the real-time measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The utility model is a water volume measurement system for tank fire drills;

[0024] Figure 2 yes Figure 1 Schematic diagram of the measuring device. DETAILED DESCRIPTION

[0025] As mentioned in the background technology, several existing firefighting capability assessment schemes have defects in fire drills and competition assessments. For example, for the method of scoring based on the experience of firefighting experts, the evaluation results are unstable due to strong subjectivity, the measurement process is time-consuming and cannot achieve real-time monitoring, the measurement accuracy is easily affected by the environment and decreases, and there is a lack of in-depth data analysis and feedback mechanisms to guide strategy optimization. For another example, for the method of directly installing a level gauge on the top of a storage tank, according to the requirements of the National Dangerous Chemicals Competition Committee, firefighters need to use a foam water tank fire truck to spray no less than 20 tons of water on the top of a 5,000 cubic meter vertical storage tank within 10-30 minutes. Usually, a vertical storage tank has a diameter of 20 meters, and the depth of 20 tons of water is only 63.7 mm. The vibration and waves caused by the fire truck during the water spraying process will seriously affect the accuracy and effectiveness of the measurement.

[0026] To solve the above technical problems, an embodiment of the utility model provides a water volume measurement system for tank fire drills, comprising: a water reservoir, arranged at the top of the storage tank, the water reservoir being used to accommodate fire spray; a measuring device, arranged in the water reservoir, the measuring device comprising a accommodating cavity and a liquid level switch arranged in the accommodating cavity, the liquid level switch being used to detect the water level in the accommodating cavity and generate a liquid level detection signal; a drainage pipe, respectively connecting the bottom of the water reservoir and the bottom of the accommodating cavity, the water level in the accommodating cavity being used to characterize the water level in the water reservoir; and a controller, coupled to the liquid level switch to receive the liquid level detection signal generated by the liquid level switch.

[0027] By adopting the technical solution of the embodiment of the present application, a water reservoir, a drainage pipe and a measuring device are formed into a communicating vessel, so that the water guided into the containing chamber through the drainage pipe is less affected by the vibration and waves caused by the fire water spraying process. Therefore, under the principle of the communicating vessel, the water level in the containing chamber can more accurately and effectively reflect the actual water level in the water reservoir.

[0028] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Figure 1 It is a water quantity measuring system 100 for fire drill of a storage tank 2 according to an embodiment of the utility model.

[0030] For ease of description, Figure 1The direction of the middle arrow is recorded as a first direction D. The water quantity measurement system 100 is used to measure the amount of firefighting water used for extinguishing fires during fire drills and competitions.

[0031] refer to Figure 1 The water volume measurement system 100 for fire drill of the storage tank 2 comprises: a water reservoir 1, which is arranged on the top of the storage tank 2, and the water reservoir 1 is used to accommodate fire spray; a measuring device 3, which is arranged in the water reservoir 1, and the measuring device 3 comprises a accommodating cavity 31 and a liquid level switch 32 arranged in the accommodating cavity 31, and the liquid level switch 32 is used to detect the water level in the accommodating cavity 31 and generate a liquid level detection signal; a drainage pipe 4, which is connected to the bottom of the water reservoir 1 and the bottom of the accommodating cavity 31 respectively, and the water level in the accommodating cavity 31 is used to represent the water level in the water reservoir 1; a controller 5, which is coupled to the liquid level switch 32 to receive the liquid level detection signal generated by the liquid level switch 32.

[0032] Specifically, the water used for the fire drill in the storage tank 2 (or "firefighting water") can be water in a physical sense, or any liquid sprayed during firefighting in a broad sense (such as a foam solution).

[0033] In some embodiments, the water reservoir 1 is installed on the top of the storage tank 2, and its main function is to contain the firefighting water (referred to as firefighting water spray) sprayed to the top of the storage tank 2 by firefighting equipment (e.g., firefighting water guns, firefighting nozzles) during firefighting drills. Such a design facilitates simulating the situation where the storage tank 2 is covered with water in an actual firefighting scene. In a typical fire scene of the storage tank 2, firefighters usually need to spray firefighting water on the storage tank 2 from top to bottom to cool the storage tank 2. Therefore, the water reservoir 1 is arranged on the top of the storage tank 2 to meet the operational requirements of the simulated firefighters when extinguishing the fire.

[0034] Furthermore, the top wall of the storage tank 2 may form the bottom wall 11 of the water reservoir 1 , and the side walls of the storage tank 2 may extend from the top wall toward the first direction D to form the side walls 12 of the water reservoir 1 .

[0035] Furthermore, the number of the measuring devices 3 can be multiple, dispersedly arranged at different positions of the water reservoir 1. Thus, multiple measuring devices 3 can detect water levels from different positions and angles, so as to obtain more comprehensive and accurate water level data. By comparing the measurement data at different positions, the distribution of the water level in the entire water reservoir 1 can be more accurately understood, reducing errors and deviations. In addition, during fire drills, various unpredictable situations may occur, such as equipment failure, water flow interference, etc. If there is only one measuring device 3, once a failure or interference occurs, the entire system may fail. Multiple measuring devices 3 can back up and supplement each other. Even if a certain device has a problem, other devices can still work normally to ensure the stability and reliability of the system.

[0036] Further, combined with Figure 1 and Figure 2 , the measuring device 3 has a containing cavity 31. The fire-fighting water injected into the water reservoir 1 flows into the containing cavity 31 from the bottom of the water reservoir 1 through the drainage pipe 4. Among them, the drainage pipe 4 uses the principle of communicating vessels to enable the water level changes in the water reservoir 1 to be reflected in the containing cavity 31 of the measuring device 3 in real time. During actual fire drills, since fire-fighting equipment continues to inject water into the water reservoir 1, the liquid level of the fire-fighting water in the water reservoir 1 may be continuously in a fluctuating state due to the impact of the water column. Therefore, if the water level of the fire-fighting water in the water reservoir 1 is directly obtained, it is very likely that the water level data obtained will be too high or too low due to factors such as being close to the water injection position, affecting the stability and accuracy of the water level data acquisition. The present application can effectively alleviate this problem by introducing the fire-fighting water into the containing chamber 31 of the measuring device 3 through the drainage pipe 4. On the one hand, the containing chamber 31 and other spaces of the water reservoir 1 are isolated from each other to ensure that the space inside the containing chamber 31 will not be directly impacted by the fire-fighting water spray. On the other hand, the flow rate of the fire-fighting water is also limited to a certain extent during the period when it is introduced into the containing chamber 31 through the drainage pipe 4, thereby improving the stability and accuracy of water level data acquisition.

[0037] Furthermore, the accommodating chamber 31 is independent of the water reservoir 1. For example, the housing 33 of the measuring device 3 is tightly fixed to the bottom wall of the water reservoir 1 by welding or the like, ensuring that the water in the water reservoir 1 can only enter the accommodating chamber 31 through the drainage pipe 4.

[0038] Furthermore, a liquid level switch 32 is provided in the accommodating chamber 31 , and the liquid level switch 32 can monitor the water level of the fire-fighting water in the accommodating chamber 31 .

[0039] Furthermore, the liquid level switch 32 can generate a liquid level detection signal after obtaining the water level of the fire-fighting water in the accommodating chamber 31 , and send the liquid level detection signal to the controller 5 .

[0040] In some embodiments, the liquid level detection signal is triggered in response to the liquid level switch 32 detecting that the water level in the accommodating chamber 31 has reached the target water level. That is, before the fire drill or competition begins, the water level threshold for generating the liquid level detection signal is preset, and when the water level in the accommodating chamber 31 is greater than or equal to the preset water level threshold, the liquid level switch 32 generates a liquid level detection signal. For example, the liquid level switch 32 may be a normally open switch, and in response to detecting that the water level in the accommodating chamber 31 has reached the target water level, the signal output by the liquid level switch 32 switches from a high level to a low level. For another example, the liquid level switch 32 may be a normally closed switch, and in response to detecting that the water level in the accommodating chamber 31 has reached the target water level, the signal output by the liquid level switch 32 switches from a low level to a high level.

[0041] In a variation, the liquid level detection signal may also be, for example, a continuous signal. That is, after the fire-fighting water enters the containing chamber 31 from the drainage tube 4, the liquid level switch 32 generates a real-time liquid level detection signal of the fire-fighting water in the current containing chamber 31. Furthermore, the real-time liquid level detection signal may be continuously sent to the controller 5, and the controller 5 processes the liquid level detection signal to convert it into readable data or charts, so that firefighters, drill or competition organizers, judges, spectators and other relevant personnel can know the progress of the drill or competition in real time. In the scenario of a fire drill, after the drill is over, firefighters can also further improve their firefighting skills in a targeted manner based on the continuously acquired liquid level detection signals.

[0042] In some embodiments, the diameter of the drainage tube 4 is not greater than DN (nominal diameter) 25. Thus, by utilizing the anti-interference property of the capillary tube, the impact of the impact of firefighting water spray on the water level change is further reduced, thereby achieving measurement stability.

[0043] Specifically, when the diameter of the drainage tube 4 is too large, the water flow speed may be too fast, resulting in a greater impact of the water flow impact on the liquid level switch 32, thereby causing measurement errors. Limiting the diameter to less than DN25 can effectively slow down the water flow speed, reduce the water flow impact, and enable the liquid level switch 32 to detect water level changes more accurately. In addition, a smaller diameter also helps save materials and costs, and improves the economy of the system.

[0044] In some embodiments, the drainage pipe 4 includes a buffer section 41, and the buffer section 41 is a coil or a zigzag extension. Therefore, the buffer section 41 can be used to alleviate the impact of water currents and waves.

[0045] Specifically, the coil or the meandering buffer section 41 can make the water flow change direction multiple times when passing through, thereby reducing the water flow speed and eliminating the fluctuation and impact of the water flow. In this way, when the water flows into the accommodating chamber 31, its speed is more stable, which is conducive to the accurate water level detection of the liquid level switch 32. In addition, the design of the buffer section 41 can also play a role in filtering and sedimentation, removing impurities and particulate matter in the water, protecting the liquid level switch 32 from damage, and ensuring the long-term stable operation of the system.

[0046] As described above, the design of the drainage pipe 4 having a diameter not greater than DN25 and including the buffer section 41 is to improve the accuracy and stability of the water volume measurement system 100. These design features can ensure that during the fire drill, the system can accurately and reliably measure and record the water level changes in the water reservoir 1 at the top of the storage tank 2, providing important reference data for firefighters and drill organizers.

[0047] Further, the measuring device 3 includes a shell 33, the shell 33 forms the accommodating cavity 31, the shell 33 is a double-layer structure, and the double-layer structure is filled with a heat insulation layer 34. Therefore, the double-layer shell 33 and the heat insulation layer 34 inside it can effectively isolate the influence of the external environment on the temperature in the accommodating cavity 31. In fire drills, especially when the ambient temperature changes significantly, this design can ensure that the temperature in the accommodating cavity 31 is relatively stable, avoiding measurement errors caused by temperature changes.

[0048] In some embodiments, reference Figure 2 The shell 33 includes a main body 331 and a cover 332. The main body 331 is suitable for surrounding an upwardly opened accommodating cavity 31, and the cover 332 can open or close the opening.

[0049] Furthermore, the main body 331 and the cover 332 are folded and matched to prevent the accommodating chamber 31 from being directly connected to the outside, which would cause water to splash into the accommodating chamber 31 when spraying water toward the water reservoir 1, causing liquid level fluctuations and inaccurate liquid level detection signals.

[0050] In some embodiments, the double-layer structure is made of weathering steel or stainless steel. Weathering steel is a low-alloy steel series between ordinary steel and stainless steel, which improves the weather resistance of steel by adding a small amount of corrosion-resistant elements such as copper and nickel. Using weathering steel in the double-layer structure of the measuring device 3 can ensure the stability and durability of the structure under complex environmental conditions.

[0051] Therefore, the double-layer structure made of weathering steel or stainless steel can ensure the stability and durability of the housing 33, so as to ensure that the measuring device 3 can work accurately and reliably under complex environmental conditions.

[0052] In some embodiments, the heat insulation layer 34 is made of heat-insulating materials or water. The heat insulation material can be selected from, for example, silica aerogel, glass fiber wool, polyurethane foam, rock wool, etc. Thus, the most suitable heat insulation solution can be selected according to specific needs.

[0053] In some embodiments, the liquid level switch 32 is a proximity switch, and when the liquid level in the accommodating chamber 31 approaches the proximity switch, the proximity switch triggers a liquid level detection signal.

[0054] Specifically, a proximity switch is a switch that can detect the position or presence of a target object without physical contact with it. It usually includes a sensing element, such as an inductive, capacitive, Hall effect or photoelectric type. When the target object enters the detection range of the sensing element, the proximity switch will send a signal, thereby triggering the corresponding circuit action. The target object can be, for example, a metal, a magnetic material or any object that can affect an electromagnetic field. In this embodiment, a floating object made of the above-mentioned metal, magnetic material, etc. can be placed in the accommodating chamber 31, and the floating object can move up and down with the rise and fall of the water level in the accommodating chamber 31.

[0055] In some embodiments, the liquid level switch 32 can be selected from: an electronic liquid level switch, a capacitive liquid level switch, etc.

[0056] Therefore, the liquid level switch 32 adopts a proximity switch, which is less affected by the interference caused by the liquid level fluctuation, and does not need to be in direct contact with the liquid during use, so it can avoid the liquid level switch 32 from being in contact with the fire water for a long time and causing corrosion and other problems. In addition, the proximity switch has a high sensitivity and can accurately detect the change of the liquid level. By reasonably arranging and calibrating the proximity switch, high-precision liquid level measurement can be achieved. In addition, the response time of the proximity switch is usually very short, and it can quickly sense the change of the liquid level and trigger the corresponding circuit action, which is conducive to improving the real-time measurement of the water volume measurement system 100.

[0057] Furthermore, the liquid level switch 32 includes a timer 321, and the timer 321 is used to time the duration for the water level in the accommodating chamber 31 to reach the target water level.

[0058] In some embodiments, the liquid level detection signal is triggered in response to the liquid level switch 32 continuously detecting that the water level in the accommodating chamber 31 reaches the target water level for a period exceeding a first threshold value, wherein the first threshold value may be, for example, 3 to 10 seconds (s).

[0059] In a typical application scenario, although the liquid level switch 32 of the water measurement system 100 can quickly sense the change of water level and trigger the corresponding circuit action, in some cases, due to system noise, vibration or other interference factors, the output signal of the liquid level switch 32 may be temporarily unstable or fluctuate. In order to ensure the accuracy and reliability of water level measurement, it is necessary to detect whether the time for the water level of the accommodating chamber 31 to reach the target water level exceeds the first threshold through the timer 321, that is, the liquid level switch 32 in the present application can have a delay function.

[0060] In some embodiments, when the liquid level switch 32 detects a change in the water level for the first time (such as when the water level reaches the target water level), the timer 321 starts timing. In the following period of time (such as the first threshold), the timer 321 will continue to monitor the output signal of the liquid level switch 32. If during this period of time, the signal of the liquid level switch 32 remains stable (i.e., there is no significant change or fluctuation again, such as not switching from a high level to a low level, and the difference in the signal size does not exceed a preset value), the timer 321 will determine that the signal has stabilized and output a confirmation signal, indicating that the current liquid level has reliably reached the target water level. In response to the timing duration of the timer 321 reaching the first threshold, the liquid level switch 321 sends a liquid level detection signal to the controller 5.

[0061] From the above, by detecting the stability of the water level signal through the timer 321, the short-term signal fluctuations caused by interference factors such as water surface fluctuations and vibrations during water injection can be filtered out, thereby improving the accuracy of the liquid level detection signal. Furthermore, the application of the timer 321 can ensure that subsequent operations or processing are performed only after the water level is truly stable, thereby avoiding misoperation or misjudgment caused by unstable signals. In addition, in complex environments, such as fire drill sites or industrial sites, the water quantity measurement system 100 may face various interferences and challenges. The design of the timer 321 can make the water quantity measurement system 100 more adaptable to these complex environments and ensure the stability and reliability of the measurement.

[0062] Further, the measuring device 3 also includes: an adjusting mechanism 35, which is set up in the accommodating cavity 31, and the adjusting mechanism 35 is used to adjust the height of the liquid level switch 32 relative to the bottom of the measuring device 3. Therefore, by accurately adjusting the position of the liquid level switch 32 through the adjusting mechanism 35, it can be ensured that it is accurately triggered at a specific water level. In addition, different application scenarios may require measuring different water level ranges. The adjusting mechanism 35 allows users (such as drills and competition organizers) to adjust the position of the liquid level switch 32 according to actual needs and rules to adapt to different application scenarios. This flexibility enables the overall water volume measurement system 100 to have a wider range of applications. In addition, during use, the liquid level switch 32 may be offset or erroneous due to environmental factors or equipment aging. The liquid level switch 32 can be easily calibrated and maintained through the adjusting mechanism 35 to ensure the accuracy of the measurement.

[0063] In some embodiments, the adjustment mechanism 35 may be disposed in the accommodating cavity 31 and realize the up and down movement of the liquid level switch 32 by mechanical, electronic or other means.

[0064] In some embodiments, the water volume measurement system 100 further includes: a prompting device 6, coupled to the controller 5, and configured to issue a prompt under the control of the controller 5. After the controller 5 receives the liquid level detection signal sent by the liquid level switches 32 in all the measuring devices 3, the controller 5 controls the prompting device 6 to issue a prompt.

[0065] Furthermore, the prompt device 6 includes a plurality of sound and light alarms 7 , and the plurality of sound and light alarms 7 are distributed around the storage tank 2 .

[0066] In some embodiments, the prompting device 6 can provide prompts in various ways such as sound, light signal, display screen, etc., to indicate that the water level in the accommodating chamber 31 has reached the target water level, and the time length of the target water level is greater than or equal to the first threshold. The specific method to be used depends on the application scenario of the measuring device 3, user needs, cost-effectiveness and other factors.

[0067] Furthermore, the water reservoir 1 is isolated from the storage cavity 21 of the storage tank 2. Thus, it is possible to prevent the water in the water reservoir 1 from leaking into the storage cavity 21 during drills or competitions to affect the accuracy of water level measurement.

[0068] In some embodiments, the tank body can be sealed by a continuous circle of welding at the connection between the top wall and the side wall of the storage tank 2.

[0069] In some embodiments, an additional sealing mechanism may be provided to isolate the water reservoir 1 and the storage tank 2 to prevent water in the water reservoir 1 from leaking into the storage cavity 21 .

[0070] Furthermore, the water volume measurement system 100 further includes a drain valve 8, which is disposed at the bottom of the water reservoir 1, and the bottom wall of the water reservoir 1 extends downwardly from the edge toward the drain valve 8. Thus, in response to receiving (all) liquid level detection signals, the controller 5 controls the drain valve 8 to open to drain the water in the water reservoir 1, so as to avoid overflow of the water in the water reservoir 1. At the same time, the bottom wall of the water reservoir 1 extends downwardly from the edge toward the drain valve 8, which can also speed up the drainage speed and avoid local water accumulation.

[0071] In a variation, the drain valve 8 may also be disposed on the side wall of the water reservoir 1 near the storage tank 2. Alternatively, there may be a plurality of drain valves 8 disposed at intervals on the side wall.

[0072] Furthermore, for each drain valve 8, a drain pipe can be provided to connect with it and communicate with the reservoir 1 when the drain valve 8 is in an open state for draining water. Thus, the firefighting water used for training or competition can be recycled and reused through the drain pipe, which is conducive to saving water resources.

[0073] Furthermore, the water volume measurement system 100 further includes a fire simulation device (not shown in the figure), which is arranged in the water reservoir 1 and coupled to the controller 5. The fire simulation device ignites or extinguishes the fire under the control of the controller 5. Furthermore, the fire extinguishing timing is determined according to the receiving timing of the liquid level detection signal. For example, after the controller 5 receives the liquid level detection signals of all the measuring devices 3, on the one hand, it controls the prompt device 6 to issue a prompt, and on the other hand, it controls the fire simulation device to extinguish the fire. In this way, the authenticity of the fire fighting scene can be increased, and the on-site effect of the exercise or competition can be increased.

[0074] In a typical application scenario, the process of using the water volume measurement system 100 described in the present application to conduct a fire drill or competition can be, for example: first, before the drill or competition, the target water level at which the liquid level switch 32 generates and sends a liquid level detection signal is pre-set, and the drainage pipe 4 is detected to be unobstructed. In this process, the firefighters complete the steps of fire truck preparation, positioning, hose connection, fire hydrant connection, etc. in sequence. In the second step, after the start of the game, an external stopwatch or other timing device can be used, and the timing can be started at the start of the drill or competition. The firefighter adjusts the water flow ejected by the fire high-pressure spray truck so that the fire water is sprayed into the reservoir 1 set at the top of the storage tank 2, and the fire water further flows into the accommodating chamber 31 through the drainage pipe 4. Further, when the water level in the accommodating chamber 31 of the measuring device 3 reaches the target water level, the liquid level switch 32 triggers a signal and sends it to the controller 5, and the controller 5 controls the alarm device to sound, prompting the completion of this drill or competition, and at the same time, according to the external timing device linkage scoring system, the results of this drill or competition are read out. Furthermore, after the drill or competition is completed, the "drain" button of the controller 5 is pressed, and the control system immediately links the drain valve 8, and the fire-fighting water in the reservoir 1 can be discharged to the sewage treatment tank within about 5 minutes. After purification, the fire-fighting water can be recycled. After the reservoir 1 is emptied, the "reset" button of the control system is clicked, and the control system links to close the drain valve 8, stop the sound and light alarm 7, and reset the entire water measurement system 100 to wait for the next drill or competition.

[0075] From the above, the technical solution of the embodiment of the present application is adopted, by forming a communicating vessel together with the water reservoir 1, the drainage pipe 4 and the measuring device 3, so that the water guided into the accommodating chamber 21 through the drainage pipe 4 is less affected by the vibration and waves caused by the fire water spraying process. Therefore, under the principle of the communicating vessel, the water level in the accommodating chamber 21 can more accurately and effectively reflect the actual water level in the water reservoir 1.

[0076] Furthermore, the measuring device 3 and the drainage pipe 4 are both arranged on the storage tank 2. During the fire drill, the water level in the accommodating chamber 21 and the water level in the water reservoir 1 basically keep changing synchronously, thereby realizing the real-time measurement.

[0077] Furthermore, the double-layer structure of the measuring device 3 and the heat insulation layer 34 therein effectively reduce the influence of the external environment on the measurement accuracy. Secondly, the design of the drainage tube 4, including the limitation of its diameter and the setting of the buffer section 41, ensures the stable flow of water and reduces the influence of water flow impact on the liquid level switch 32. As a result, the stability of the measurement of the water volume measurement system 100 is further improved.

[0078] Furthermore, the fire simulation device can ignite or extinguish a fire under the control of the controller 5, providing a real fire scene for fire drills. This simulation environment helps firefighters better adapt to the emergency response work of actual fires and improve their actual combat capabilities.

[0079] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices or structures in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0080] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A water volume measurement system for tank fire drills, characterized in that: include: A water reservoir is disposed on the top of the storage tank, and the water reservoir is used to contain fire spray water; A measuring device is arranged in the water reservoir, the measuring device comprises a containing cavity and a liquid level switch arranged in the containing cavity, the liquid level switch is used to detect the water level in the containing cavity and generate a liquid level detection signal; A drainage pipe, connected to the bottom of the water reservoir and the bottom of the accommodating chamber respectively, wherein the water level in the accommodating chamber is used to represent the water level in the water reservoir; A controller is coupled to the liquid level switch to receive the liquid level detection signal generated by the liquid level switch.

2. The water quantity measuring system according to claim 1, characterized in that: The diameter of the drainage tube is not greater than DN25, and / or the drainage tube includes a buffer section, and the buffer section is a coil or a zigzag extension.

3. The water quantity measuring system according to claim 1, characterized in that: The measuring device comprises a shell, the housing cavity is formed in the shell, the shell is a double-layer structure and a heat insulation layer is filled between the double-layer structure.

4. The water quantity measuring system according to claim 3, characterized in that: The double-layer structure is made of weather-resistant steel or stainless steel, and / or the heat insulation layer is made of thermal insulation material or water.

5. The water quantity measuring system according to claim 1, characterized in that: The liquid level switch is a proximity switch, and a floating object that can be sensed by the proximity switch is placed in the accommodating cavity.

6. The water quantity measuring system according to claim 1, characterized in that: The liquid level switch comprises a timer, and the timer is used to time the duration for the water level in the accommodating chamber to reach the target water level.

7. The water quantity measuring system according to claim 1, characterized in that: The measuring device further comprises: an adjusting mechanism, which is mounted in the accommodating cavity, and the adjusting mechanism is used to adjust the height of the liquid level switch relative to the bottom of the measuring device.

8. The water quantity measuring system according to claim 1, characterized in that: There are multiple measuring devices, which are dispersedly arranged at different positions of the water reservoir.

9. The water quantity measuring system according to claim 1, characterized in that: Also includes: A prompt device is coupled to the controller, and is used for issuing a prompt under the control of the controller.

10. The water quantity measuring system according to claim 9, characterized in that: The prompt device includes a plurality of sound and light alarms, and the plurality of sound and light alarms are distributed around the storage tank.

11. The water quantity measuring system according to claim 1, characterized in that: The water reservoir is isolated from the storage cavity of the storage tank.

12. The water quantity measuring system according to claim 1, characterized in that: Also includes: The drain valve is arranged at the bottom of the water reservoir or at a position of the side wall of the water reservoir close to the storage tank, and the bottom wall of the water reservoir extends downwardly from the edge toward the drain valve.

13. The water quantity measuring system according to claim 1, characterized in that: Also includes: A fire simulation device is arranged in the water reservoir and coupled to the controller. The fire simulation device ignites or extinguishes a fire under the control of the controller.

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