Multi-fire pool cascade control system

Abstract

The disclosure provides a multi-fire pool cascade control system, which comprises: a float liquid level meter and a drop-in liquid level meter corresponding to each fire pool, an electromagnetic flow meter of an overflow pipe of a high-level fire pool, a high-level-to-medium-level fire pool water supplement electric valve, a high-level-to-medium-level fire pool electromagnetic flow meter, a high-level-to-low-level fire pool water supplement electric valve, a high-level-to-low-level fire pool electromagnetic flow meter, a medium-level fire pool water outlet electromagnetic flow meter, a low-level fire pool water outlet electromagnetic flow meter, a medium-level-to-low-level fire pool water supplement electric valve, a medium-level-to-low-level fire pool electromagnetic flow meter, a medium-level fire pool overflow pipe liquid level switch, a diversion tunnel-to-low-level fire pool water supplement electric valve, a diversion tunnel-to-low-level fire pool electromagnetic flow meter and a PLC control system, so that the automatic water supplement function of the medium-level and low-level fire pools can be realized based on the collection, judgment and calculation of the analog and switch signals of the PLC control system, and the utilization rate of clean water sources is effectively improved.

Description

Technical Field

[0001] This disclosure relates to the field of fire water tank technology, specifically to a multi-fire water tank cascade linkage control system. Background Technology

[0002] A fire water tank is a water source installed within a building or park to supply water for the fire protection system. Based on their location, fire water tanks can be classified as high-level fire water tanks, mid-level fire water tanks, and low-level fire water tanks.

[0003] In related technologies, float valves are typically used to automatically replenish water to the intermediate and low-level fire water tanks.

[0004] This method results in low utilization of clean water resources and significant waste. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, the purpose of this disclosure is to propose a multi-fire water tank cascade linkage control system, comprising:

[0007] The float level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to trigger alarms when the corresponding water tanks are at preset high and low water levels, respectively.

[0008] Submersible level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to monitor the real-time water level of each tank.

[0009] Electromagnetic flow meter for overflow pipe of high-level fire water tank, used for monitoring the overflow of high-level fire water tank;

[0010] The electric valve for replenishing water to the high-level fire water tank and the electromagnetic flow meter for replenishing water to the middle-level fire water tank from the high-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the middle-level fire water tank.

[0011] The electric valve for replenishing water from the high-level fire water tank to the low-level fire water tank and the electromagnetic flow meter for replenishing water from the high-level fire water tank to the low-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the low-level fire water tank.

[0012] Electromagnetic flow meters for water outlet from intermediate-level fire water tanks and electromagnetic flow meters for water outlet from low-level fire water tanks are used to detect the water consumption rate and water consumption of the corresponding water tanks.

[0013] The electric valve for replenishing water to the intermediate-level fire water tank and the electromagnetic flow meter for replenishing water to the intermediate-level fire water tank are used to control the quantitative replenishment of water from the intermediate-level fire water tank to the intermediate-level fire water tank.

[0014] A level switch for the overflow pipe of the intermediate fire water tank is used to control the drainage of water from the intermediate fire water tank to the reservoir area via the overflow pipe.

[0015] The electric valve for water supply from the diversion tunnel to the low-level fire water tank and the electromagnetic flow meter for water supply from the diversion tunnel to the low-level fire water tank are used to control the quantitative water supply from the diversion tunnel to the low-level fire water tank.

[0016] The PLC control system is used for cascade linkage control of each water tank.

[0017] Optionally, in some embodiments, the step of performing cascaded linkage control on each water tank includes:

[0018] Determine the water replenishment control mode of the target fire water tank, wherein the target fire water tank includes: the intermediate fire water tank and / or the low-level fire water tank, and the water replenishment control mode includes: flow control water replenishment mode and water level control water replenishment mode;

[0019] The target fire water tank is replenished based on the flow control water replenishment mode or the water level control water replenishment mode.

[0020] Optionally, in some embodiments, water replenishment control of the target fire water tank based on the flow control water replenishment mode includes:

[0021] Receive the first monitoring signal of the target outlet electromagnetic flow meter corresponding to the target fire water tank, wherein the target outlet electromagnetic flow meter is the outlet electromagnetic flow meter of the middle fire water tank or the outlet electromagnetic flow meter of the low fire water tank.

[0022] If the first monitoring signal indicates that the water consumption of the target fire water tank has reached the preset water consumption, the target water supply electric valve corresponding to the target fire water tank is opened to supply water. The target water supply electric valve includes: the high-to-medium-level fire water tank water supply electric valve, and / or the high-to-low-level fire water tank water supply electric valve, and / or the mid-to-low-level fire water tank water supply electric valve.

[0023] The system receives a second monitoring signal from the target water supply magnetic flow meter corresponding to the target fire water tank, wherein the target water supply magnetic flow meter includes: the high-to-medium level fire water tank electromagnetic flow meter, and / or the high-to-low level fire water tank electromagnetic flow meter, and / or the mid-to-low level fire water tank electromagnetic flow meter;

[0024] If the second monitoring signal indicates that the water replenishment of the target fire water tank has reached the preset water consumption, then the target water replenishment electric valve is closed to stop water replenishment.

[0025] Optionally, in some embodiments, water replenishment control of the target fire-fighting water tank based on the water level control replenishment mode includes:

[0026] Receive a third monitoring signal from the target level gauge corresponding to the target fire water tank, wherein the target level gauge includes a mid-level fire water tank level gauge or a low-level fire water tank level gauge, the mid-level fire water tank level gauge includes a mid-level fire water tank float level gauge and / or a mid-level fire water tank submersible level gauge, and the low-level fire water tank level gauge includes a low-level fire water tank float level gauge and / or a low-level fire water tank submersible level gauge;

[0027] If the third monitoring signal indicates that the target fire water tank meets the preset water replenishment conditions, then the target water replenishment electric valve corresponding to the target fire water tank is opened to replenish water;

[0028] Receive the fourth monitoring signal from the target level gauge corresponding to the target fire water tank;

[0029] If the fourth monitoring signal indicates that the target fire water tank meets the preset stop water replenishment conditions, then the target water replenishment electric valve is closed to stop water replenishment.

[0030] Optionally, in some embodiments, the preset water replenishment conditions include: the water level of the target fire water tank is lower than the preset water replenishment level or the float level gauge of the target fire water tank issues a low water level alarm; the preset water replenishment stop conditions include: the water level of the target fire water tank is higher than the preset stop water level or the float level gauge of the target fire water tank issues a high water level alarm.

[0031] Optionally, in some embodiments, the cascade linkage control of each water tank further includes:

[0032] Receive the fifth monitoring signal from the electromagnetic flowmeter of the overflow pipe of the high-level fire water tank;

[0033] If the fifth monitoring signal indicates that the high-level fire water tank is full and overflowing, then the electric valve for replenishing water from the high-level to the middle-level fire water tank is opened;

[0034] Receive the sixth monitoring signal from the float level gauge and / or the submersible level gauge of the mid-level fire water tank;

[0035] If the sixth monitoring signal indicates that the intermediate fire water tank is full and overflowing, then open the level switch of the overflow pipe of the intermediate fire water tank;

[0036] In response to the fifth monitoring signal indicating that the water in the high-level fire water tank has stopped overflowing, the electric valve for replenishing water from the high-level to the middle-level fire water tank is closed.

[0037] Optionally, in some embodiments, the cascade linkage control of each water tank further includes:

[0038] The real-time water level of the intermediate fire water tank is determined based on the float level gauge and / or the submersible level gauge of the intermediate fire water tank.

[0039] If the real-time water level of the intermediate fire water tank meets the preset water replenishment conditions, the electric valve for water replenishment from the high level to the intermediate level fire water tank is opened to replenish water, and the electric valve for water replenishment from the high level to the intermediate level fire water tank is closed when the real-time water level of the intermediate level fire water tank meets the preset water stop replenishment conditions.

[0040] Optionally, in some embodiments, the cascade linkage control of each water tank further includes:

[0041] The real-time water level of the low-level fire water tank is determined based on the float level gauge and / or the submersible level gauge of the low-level fire water tank.

[0042] If the real-time water level of the low-level fire water tank meets the preset water replenishment conditions, then the water level information of the high-level fire water tank and the middle-level fire water tank is determined.

[0043] If the water level information indicates that the high-level fire water tank has reached a high water level, or if the water level information indicates that neither the high-level fire water tank nor the middle-level fire water tank has reached a high water level, then the electric valve for replenishing water from the high-level to the low-level fire water tank is opened to replenish water.

[0044] If the water level information indicates that the high-level fire water tank has not reached the high water level and the middle-level fire water tank has reached the high water level, then the electric valve for replenishing water from the middle-level to the low-level fire water tank is opened to replenish water.

[0045] Optionally, in some embodiments, the cascade linkage control of each water tank further includes:

[0046] If the high water level signal of the low-level fire water tank returns, the water supply valve from the diversion tunnel to the low-level fire water tank and the electric water replenishment valve from the high level to the low-level fire water tank will be opened simultaneously.

[0047] Determine the duration of water replenishment;

[0048] If the water replenishment duration exceeds a preset time threshold, the electric valve for replenishing water to the middle to low-level fire water tank will be opened.

[0049] If the low-level fire water tank reports a high water level signal, then the corresponding water supply electric valve for the low-level fire water tank shall be closed.

[0050] Optionally, in some embodiments, the PLC control system is also used to receive analog water level signals, high and low water level switching signals, analog electromagnetic flowmeter signals, overflow pipe overflow signals, and electric valve switching signals from each fire water tank, and send each signal to the monitoring system.

[0051] The technical solutions provided by the embodiments of the present invention have the following beneficial effects:

[0052] First, the PLC control system monitors the water levels of the high, medium and low fire water tanks, enabling cascade linkage water replenishment of the medium and low fire water tanks to ensure that the medium and low fire water tanks are always full of water.

[0053] Secondly, an electromagnetic flow meter is installed at the overflow pipe of the high-level fire water tank. When the overflow of the high-level fire water tank is detected, the electric valve for replenishing water from the high-level to the middle-level fire water tank is opened immediately to replenish the excess water to the middle-level fire water tank. After the middle-level fire water tank is filled, it overflows to the reservoir area, thereby improving the utilization rate of clean water sources.

[0054] Third, electromagnetic flow meters are installed on the outlet pipes and replenishment pipes of the intermediate and low-level fire water tanks. Through calculation by the PLC control system, the quantitative water replenishment function of the intermediate and low-level fire water tanks can be realized, reducing the waste of clean water sources.

[0055] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0056] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0057] Figure 1 This disclosure presents a multi-fire water tank cascade linkage control system according to one embodiment. Detailed Implementation

[0058] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0059] This invention addresses the unreliability of the automatic water replenishment function for mid- and low-level fire water tanks using float valves in production sites, which results in low utilization of clean water sources and significant waste. It proposes a multi-fire water tank cascade linkage control system.

[0060] The multi-fire water tank cascade linkage control system of the present invention is described below with reference to the accompanying drawings.

[0061] Figure 1This disclosure presents a multi-fire water tank cascade linkage control system according to one embodiment.

[0062] like Figure 1 As shown, the multi-fire water tank cascade linkage control system includes: float level gauges and submersible level gauges configured for each fire water tank, electromagnetic flow meters for the overflow pipe of the high-level fire water tank, electric valves for water supply from the high-level to the middle-level fire water tank, electromagnetic flow meters for water supply from the high-level to the middle-level fire water tank, electric valves for water supply from the high-level to the low-level fire water tank, electromagnetic flow meters for water supply from the high-level to the low-level fire water tank, electromagnetic flow meters for water supply from the middle-level fire water tank, electromagnetic flow meters for water supply from the low-level fire water tank, electric valves for water supply from the middle-level to the low-level fire water tank, electromagnetic flow meters for water supply from the middle-level to the low-level fire water tank, level switches for the overflow pipe of the middle-level fire water tank, electric valves for water supply from the diversion tunnel to the low-level fire water tank, electromagnetic flow meters for water supply from the diversion tunnel to the low-level fire water tank, and a PLC (Programmable Logic Controller) control system.

[0063] Among them, the float level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to trigger alarms when the corresponding water tanks are at preset high and preset low water levels, respectively.

[0064] A float level gauge is an instrument used to measure the liquid level in a container. It consists of a float and an indicator connected to it. The float is usually made of a lightweight material, such as plastic or foam, allowing it to float on the liquid surface. As the liquid level rises or falls, the float moves accordingly.

[0065] The preset high water level and preset low water level refer to the pre-configured water levels for triggering high and low water level alarms, respectively. The specific values ​​of the preset high and low water levels can be flexibly configured according to the needs of the application scenario and are not restricted. The preset high and low water levels for high-level, mid-level, and low-level fire water tanks can be the same or different.

[0066] In this invention, when float level timers are installed in the high-level fire water tank, the middle-level fire water tank, and the low-level fire water tank, corresponding alarm devices can be installed to trigger alarms when each fire water tank reaches a preset high water level and a preset low water level, so as to take corresponding water level control measures in a timely manner.

[0067] Submersible level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to monitor the real-time water level of each tank.

[0068] Submersible level gauges are instruments used to measure the liquid level in a container; they need to be directly installed inside the container. Unlike float level gauges, the sensor or probe of a submersible level gauge is completely immersed in the liquid, allowing for real-time monitoring of level changes. Submersible level gauges typically consist of a sensor, electronic equipment, and a display. The sensor section usually employs technologies such as pressure, ultrasound, radar, or radio frequency to sense the liquid level. These sensors measure the distance from the liquid surface to the sensor position and convert the measurement result into an electrical signal. The electronic equipment receives the signal from the sensor, processes and converts it. It converts the level signal into a readable digital or analog signal and transmits it to the display or external control system.

[0069] In other words, in this embodiment of the present disclosure, float level gauges and submersible level gauges can be configured simultaneously in each fire water tank. This can prevent the failure of a single level gauge from affecting the system operation, thereby effectively improving the robustness of the system operation.

[0070] Electromagnetic flow meter for overflow pipe of high-level fire water tank, used for monitoring the overflow of high-level fire water tank.

[0071] In other words, in this embodiment of the present disclosure, an electromagnetic flow meter can be installed at the overflow pipe of the high-level fire water tank to detect the overflow situation of the high-level fire water tank in a timely manner, so as to take corresponding treatment measures in a timely manner and improve the utilization rate of water resources.

[0072] The electric valve for replenishing water to the high-level fire water tank and the electromagnetic flow meter for replenishing water to the middle-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the middle-level fire water tank.

[0073] Among them, the electric valve for replenishing water from the high-level to the middle-level fire water tank can be used to control the water replenishment channel of the high-level to the middle-level fire water tank, while the electromagnetic flow meter for the high-level to the middle-level fire water tank can be used to calculate the replenishment volume of the high-level to the middle-level fire water tank in real time, thereby realizing the quantitative replenishment of water from the high-level fire water tank to the middle-level fire water tank.

[0074] The electric valve for replenishing water from the high-level fire water tank to the low-level fire water tank and the electromagnetic flow meter for replenishing water from the high-level fire water tank to the low-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the low-level fire water tank.

[0075] Among them, the electric valve for replenishing water from the high-level to the low-level fire water tank can be used to control the water replenishment channel of the high-level to the low-level fire water tank, while the electromagnetic flow meter for the high-level to the low-level fire water tank can be used to calculate the replenishment volume of the high-level to the low-level fire water tank in real time, thereby realizing the quantitative replenishment of water from the high-level fire water tank to the low-level fire water tank.

[0076] That is to say, in this embodiment of the present disclosure, water can be replenished from the high-level fire water tank to the middle-level fire water tank and / or the low-level fire water tank.

[0077] Electromagnetic flow meters for water outlet from intermediate-level and low-level fire-fighting water tanks are used to detect the water consumption rate and volume of the corresponding water tanks.

[0078] In other words, in this embodiment of the present disclosure, electromagnetic flow meters can be installed at the outlet of the intermediate fire water tank and the low-level fire water tank to determine the water consumption of the intermediate fire water tank and the low-level fire water tank in a timely and accurate manner, so as to determine whether water needs to be replenished.

[0079] The electric valve for replenishing water to the intermediate-level fire water tank and the electromagnetic flow meter for replenishing water to the intermediate-level fire water tank are used to control the quantitative replenishment of water from the intermediate-level fire water tank to the intermediate-level fire water tank.

[0080] Among them, the electric valve for water replenishment from the middle to the low level fire water tank can be used to control the water replenishment channel from the middle to the low level fire water tank, while the electromagnetic flow meter for water replenishment from the middle to the low level fire water tank can be used to calculate the water replenishment volume from the middle to the low level fire water tank in real time, thereby realizing the quantitative water replenishment from the middle level fire water tank to the low level fire water tank.

[0081] That is to say, in the embodiments of this disclosure, for the low-level fire water tank, it can be replenished by the high-level fire water tank and / or the middle-level fire water tank.

[0082] The level switch for the overflow pipe of the intermediate-position fire water tank is used to control the drainage of water from the intermediate-position fire water tank to the reservoir area via the overflow pipe.

[0083] In other words, in the disclosed embodiment, when the water level in the intermediate fire water tank is full, the overflow pipe level switch can be opened to divert the excess water to the reservoir area.

[0084] The electric valve for water supply from the diversion tunnel to the low-level fire water tank and the electromagnetic flow meter for water supply from the diversion tunnel to the low-level fire water tank are used to control the quantitative water supply from the diversion tunnel to the low-level fire water tank.

[0085] Among them, the electric valve for water replenishment from the diversion tunnel to the low-level fire water tank can be used to control the water replenishment channel from the diversion tunnel to the low-level fire water tank, while the electromagnetic flow meter for water replenishment from the diversion tunnel to the low-level fire water tank can be used to calculate the water replenishment volume from the diversion tunnel to the low-level fire water tank in real time, thereby realizing the quantitative water replenishment from the diversion tunnel fire water tank to the low-level fire water tank.

[0086] The PLC control system is used for cascade linkage control of each water tank.

[0087] In other words, the present invention can configure a PLC control system in a multi-fire water tank cascade linkage control system to facilitate the processing of various signals and the execution of corresponding control logic.

[0088] For example, in the design of a control system for adaptive water volume multi-fire water tank cascade linkage in this embodiment of the present disclosure, the implementation steps are as follows:

[0089] S01. The overall design of the water replenishment function of the high-level, medium-level, and low-level fire water tanks is carried out, and the functions of each component required are sorted out and determined.

[0090] S02. Conduct research on the performance and parameters of each component, and select and purchase appropriate components based on the actual site conditions.

[0091] S03. Arrange, install, and wire the various components and control system on-site, and program the PLC.

[0092] S04. Power on and debug the control system, verify the acquisition of various data and the testing of various signals, calibrate the level gauge water level, and determine the high and low water level positions of each water tank.

[0093] S05. Conduct a linkage test on the automatic water replenishment function of the high-level, medium-level, and low-level fire water tanks.

[0094] S06. Check that the linkage water replenishment control system functions properly and meets the design requirements.

[0095] Further, in S01, the overall design of the control system was determined, from the initial conception to the required functions. Electric valves were used to replenish water to each water tank. Float level gauges and submersible level gauges were used to monitor the water levels of the high, medium, and low-level fire water tanks. Electromagnetic flow meters were used to monitor water consumption and replenishment, as well as the overflow of the high-level fire water tank. The PLC system was used to collect, judge, and calculate various analog and digital signals to achieve the automatic water replenishment function of the medium and low-level fire water tanks.

[0096] Further investigation into the performance and parameters of each component in S02 revealed that the control system PLC system is equipped with analog input / output modules and digital input / output modules. The electric valve has a pipe diameter of DN125. The submersible level gauge is powered by 24VDC with an output of 4-20mA (two-wire) and a range of 10m. The float level switch outputs four SPDT digital signals with a node capacity of 3A125 / 250VAC.

[0097] Further steps in S03 involve installing and wiring electric valves, electromagnetic flow meters, float level switches, submersible level switches, and control cabinets, and programming the PLC system according to the designed functions and control logic.

[0098] In S04, after verifying the wiring of each control circuit, the control system is powered on for inspection. The program is then transferred to the PLC system, and each electric valve is tested for opening and closing. The electric valves are checked to ensure they are operating normally, and the fully open and fully closed signals are fed back correctly. The high, medium, and low water level positions of the float switches in the high, medium, and low water tanks are adjusted according to the design. The level acquisition of the submersible level gauge is confirmed to be correct, and the flow data of the electromagnetic flowmeter is confirmed to be correct.

[0099] Further verification in S05 involved draining and replenishing the high, medium, and low-level fire water tanks. This verified that the simulated water level displays for each tank were normal, the high and low water level signals were normal, and the overflow pipe flow signal feedback was normal after the high-level tank was full. When the water levels in the medium and low-level fire water tanks reached the replenishment level, the electric valves automatically opened; when replenishment reached the stop level, the electric valves automatically closed, and the opening and closing signals of the electric valves were correctly fed back. When the high-level fire water tank overflowed, the electromagnetic flowmeter promptly fed back the overflow signal, and the PLC system promptly opened the electric valves for replenishing water from the high to the medium-level fire water tanks, allowing excess water to overflow from the medium-level fire water tank to the reservoir area. Based on the water consumption calculated by the electromagnetic flowmeters of the outlet pipes of the medium and low-level fire water tanks, and simultaneously calculated automatically by the PLC control system, the electric valves for replenishment were opened for precise water replenishment.

[0100] Further, in S06, the linkage water replenishment function of the high-level, medium-level, and low-level fire water tanks was verified and checked. After testing the control system, all data signals were collected and fed back normally, and all instructions were executed correctly, meeting the requirements of the water volume adaptive multi-fire water tank cascade linkage control system.

[0101] Optionally, in some embodiments, when performing cascade linkage control on each water tank, the water replenishment control mode of the target fire water tank can be determined. The target fire water tank includes: a mid-level fire water tank and / or a low-level fire water tank. The water replenishment control mode includes: a flow control water replenishment mode and a water level control water replenishment mode. The water replenishment control of the target fire water tank is performed based on the flow control water replenishment mode or the water level control water replenishment mode.

[0102] This allows for diverse options in the water replenishment control process to adapt to individualized scenario requirements, effectively enhancing the flexibility of the water replenishment control process.

[0103] The two water level control and flow rate control water replenishment modes proposed in this invention can be switched by a selector switch on the control cabinet, or they can be remotely controlled by a terminal device, without any limitation.

[0104] Optionally, in some embodiments, when controlling the water replenishment of the target fire water tank based on the flow control water replenishment mode, a first monitoring signal can be received from the target outlet electromagnetic flowmeter corresponding to the target fire water tank. The target outlet electromagnetic flowmeter is either a mid-level fire water tank outlet electromagnetic flowmeter or a low-level fire water tank outlet electromagnetic flowmeter. If the first monitoring signal indicates that the water consumption of the target fire water tank has reached a preset water consumption, the target water replenishment electric valve corresponding to the target fire water tank is opened for water replenishment. The target water replenishment electric valve includes a high-level to mid-level fire water replenishment valve. The electric valve for water replenishment of the fire-fighting water tank, and / or the electric valve for water replenishment of the fire-fighting water tank from high to low level, and / or the electric valve for water replenishment of the fire-fighting water tank from middle to low level, receives a second monitoring signal from the target water replenishment magnetic flow meter corresponding to the target fire-fighting water tank. The target water replenishment magnetic flow meter includes: an electromagnetic flow meter for water replenishment of the fire-fighting water tank from high to middle level, and / or an electromagnetic flow meter for water replenishment of the fire-fighting water tank from high to low level, and / or an electromagnetic flow meter for water replenishment of the fire-fighting water tank from middle to low level. If the second monitoring signal indicates that the water replenishment volume of the target fire-fighting water tank reaches the preset water consumption, the target water replenishment electric valve is closed to stop water replenishment.

[0105] Therefore, water replenishment can be started or stopped in a timely manner based on the first and second monitoring signals in the flow control water replenishment mode, thereby effectively improving the reliability of the flow control water replenishment mode.

[0106] For example, when selecting the flow replenishment mode, the intermediate and low-level fire water tanks are monitored by electromagnetic flow meters on the outlet pipes. The calculation begins when a high water level signal is reported in the intermediate or low-level fire water tanks, and the flow rate is calculated until 10m³ of water is consumed from the tank. 3 When the water supply reaches 10m³, the control system replenishes water by opening the electric water supply valve. 3 When a high water level signal is issued for the corresponding fire water tank, the electric valve is closed to stop water replenishment.

[0107] Optionally, in some embodiments, when controlling the replenishment of the target fire water tank based on the water level control replenishment mode, a third monitoring signal from the target level gauge corresponding to the target fire water tank may be received. The target level gauge includes a mid-level fire water tank level gauge or a low-level fire water tank level gauge. The mid-level fire water tank level gauge includes a mid-level fire water tank float level gauge and / or a mid-level fire water tank submersible level gauge. The low-level fire water tank level gauge includes a low-level fire water tank float level gauge and / or a low-level fire water tank submersible level gauge. If the third monitoring signal indicates that the target fire water tank meets the preset replenishment conditions, the target replenishment electric valve corresponding to the target fire water tank is opened to replenish water. A fourth monitoring signal from the target level gauge corresponding to the target fire water tank is received. If the fourth monitoring signal indicates that the target fire water tank meets the preset stop replenishment conditions, the target replenishment electric valve is closed to stop replenishment.

[0108] Therefore, water replenishment can be started or stopped in a timely manner based on the third and fourth monitoring signals in the water level control water replenishment mode, thereby effectively improving the reliability of the water level control water replenishment mode.

[0109] For example, when selecting the water level control replenishment mode, the high-level and medium-level fire water tanks replenish water according to changes in water level. The submersible level gauges of the high-level, medium-level, and low-level fire water tanks serve as the main water level control elements, while the float level switch serves as the backup water level control element. The main and backup water level control elements can be manually selected on the control cabinet.

[0110] Optionally, in some embodiments, the preset water replenishment conditions include: the water level of the target fire water tank is lower than the preset water replenishment level or the float level gauge of the target fire water tank issues a low water level alarm; the preset water replenishment stop conditions include: the water level of the target fire water tank is higher than the preset stop water level or the float level gauge of the target fire water tank issues a high water level alarm.

[0111] For example, when an immersion level gauge is selected as the main device, the electric valve will automatically open to replenish water when the water level in the intermediate and low-level fire water tanks drops to the set replenishment level, and will automatically close to stop replenishing water when the water level reaches the stop level; when a float level switch is selected as the main device, the electric valve will automatically open to replenish water when the water level in the intermediate and low-level fire water tanks drops to the low level alarm level, and will automatically close to stop replenishing water when the water level reaches the high level.

[0112] Optionally, in some embodiments, when performing cascade linkage control of each water tank, a fifth monitoring signal from the electromagnetic flowmeter of the overflow pipe of the high-level fire water tank can also be received. If the fifth monitoring signal indicates that the high-level fire water tank is full and overflowing, the electric valve for water supply from the high-level to the middle-level fire water tank is opened. A sixth monitoring signal from the float level gauge and / or the submersible level gauge of the middle-level fire water tank is received. If the sixth monitoring signal indicates that the middle-level fire water tank is full and overflowing, the level switch of the overflow pipe of the middle-level fire water tank is opened. In response to the fifth monitoring signal indicating that the water in the high-level fire water tank has stopped overflowing, the electric valve for water supply from the high-level to the middle-level fire water tank is closed.

[0113] Therefore, based on the fifth and sixth monitoring signals, excess water can be diverted to the middle fire water tank in a timely manner when the high-level fire water tank overflows, thereby effectively avoiding water waste caused by the overflow of the high-level fire water tank.

[0114] For example, when water overflows from the overflow pipe of the high-level fire water tank, the electromagnetic flow meter detects that the control system opens the high-to-medium-level water supply valve to replenish water to the mid-level fire water tank. After the mid-level fire water tank is full, water replenishment does not stop, and excess water flows into the reservoir area through the overflow pipe. The high-level fire water tank stops overflowing. After the electromagnetic flow meter detects this, it sends a signal to the control system, and the control system closes the high-to-medium-level water supply electric valve to stop water replenishment.

[0115] Optionally, in some embodiments, when performing cascade linkage control of each water tank, the real-time water level of the middle-level fire water tank can be determined based on the float level gauge and / or the submersible level gauge of the middle-level fire water tank. If the real-time water level of the middle-level fire water tank meets the preset water replenishment conditions, the electric valve for water replenishment from the high-level to the middle-level fire water tank is opened to replenish water, and the electric valve for water replenishment from the high-level to the middle-level fire water tank is closed when the real-time water level of the middle-level fire water tank meets the preset stop water replenishment conditions.

[0116] This enables real-time monitoring of the water level in the intermediate fire water tank, and allows for timely activation or deactivation of water replenishment based on the real-time water level, thereby effectively improving the practicality of the control logic.

[0117] For example, when the water level in the intermediate fire water tank drops to the point where it needs to be replenished, the control system automatically opens the electric valve for replenishing water from the high to the intermediate fire water tank. When the water level rises to the point where replenishment stops, the electric valve closes.

[0118] Optionally, in some embodiments, when performing cascade linkage control of each water tank, the real-time water level of the low-level fire water tank can be determined based on the float level gauge and / or the submersible level gauge of the low-level fire water tank. If the real-time water level of the low-level fire water tank meets the preset water replenishment conditions, the water level information of the high-level fire water tank and the middle-level fire water tank is determined. If the water level information indicates that the high-level fire water tank has reached a high water level, or if the water level information indicates that neither the high-level fire water tank nor the middle-level fire water tank has reached a high water level, the electric valve for water replenishment from the high-level fire water tank to the low-level fire water tank is opened to replenish water. If the water level information indicates that the high-level fire water tank has not reached a high water level and the middle-level fire water tank has reached a high water level, the electric valve for water replenishment from the middle-level fire water tank to the low-level fire water tank is opened to replenish water.

[0119] This can effectively improve the rationality and reliability of the water replenishment control logic for low-level fire water tanks, and improve water resource utilization.

[0120] For example, when the water level in the low-level fire water tank drops to the point where it needs to be replenished, the control system first checks the water levels in the high-level and mid-level fire water tanks. If both the high-level and mid-level fire water tanks are at high level and trigger an alarm, the electric valve for replenishing water from the high-level to the low-level fire water tank is opened first. If no high-level signal is reported in the high-level fire water tank but a high-level signal is reported in the mid-level fire water tank, the electric valve for replenishing water from the mid-level to the low-level fire water tank is opened first. If no high-level signal is reported in either the high-level or mid-level fire water tank, the water supply valve for replenishing water from the high-level to the low-level fire water tank is opened first.

[0121] Optionally, in some embodiments, when performing cascade linkage control on each water tank, if the high water level signal of the low-level fire water tank returns, the water supply valve from the diversion tunnel to the low-level fire water tank and the water replenishment electric valve from the high level to the low-level fire water tank are opened simultaneously. The water replenishment duration is determined. If the water replenishment duration is greater than a preset time threshold, the water replenishment electric valve from the middle level to the low-level fire water tank is opened. If the low-level fire water tank reports a high water level signal, the corresponding water replenishment electric valve of the low-level fire water tank is closed. This can effectively improve the water replenishment efficiency of the low-level fire water tank.

[0122] For example, when the high water level signal in the low-level fire water tank is restored, the electric valves for supplying water to the low-level fire water tank from the diversion tunnel and for replenishing water to the low-level fire water tank are opened simultaneously. When the pump in the diversion tunnel is started to drain water, water is preferentially replenished to the low-level fire water tank; when the pump in the diversion tunnel is not started, water is replenished to the low-level fire water tank from the high-level fire water tank. When the low-level fire water tank experiences a high water level alarm, the above two electric valves are closed. If the high water level signal in the low-level fire water tank does not alarm after 10 minutes of continuous water replenishment, the electric valve for replenishing water to the low-level fire water tank from the intermediate position is opened. After the high water level signal in the low-level fire water tank is reported, the above electric valves are closed.

[0123] Optionally, in some embodiments, the PLC control system is also used to receive analog water level signals, high and low water level switching signals, analog electromagnetic flowmeter signals, overflow pipe overflow signals, and electric valve switching signals from each fire water tank, and send each signal to the monitoring system.

[0124] This enables remote monitoring of the clean water source replenishment system.

[0125] In summary, the multi-fire water tank cascade linkage control system proposed in this disclosure eliminates the unreliability of the original float valve automatic water replenishment function through the design and construction of the water volume adaptive multi-fire water tank cascade linkage control system. It improves the reliability of water replenishment for high, medium and low-level fire water tanks by adopting multiple control modes, optimizes the water replenishment method, improves the utilization rate of clean water sources, and effectively reduces the waste of clean water sources.

[0126] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0127] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0128] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0129] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0130] It should be understood that various parts of this disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0131] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0132] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0133] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0134] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0135] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A multi-fire water tank cascade linkage control system, characterized in that, include: The float level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to trigger alarms when the corresponding water tanks are at preset high and low water levels, respectively. Submersible level gauges for high-level fire water tanks, medium-level fire water tanks, and low-level fire water tanks are used to monitor the real-time water level of each tank. Electromagnetic flow meter for overflow pipe of high-level fire water tank, used for monitoring the overflow of high-level fire water tank; The electric valve for replenishing water to the high-level fire water tank and the electromagnetic flow meter for replenishing water to the middle-level fire water tank from the high-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the middle-level fire water tank. The electric valve for replenishing water from the high-level fire water tank to the low-level fire water tank and the electromagnetic flow meter for replenishing water from the high-level fire water tank to the low-level fire water tank are used to control the quantitative replenishment of water from the high-level fire water tank to the low-level fire water tank. Electromagnetic flow meters for water outlet from intermediate-level fire water tanks and electromagnetic flow meters for water outlet from low-level fire water tanks are used to detect the water consumption rate and water consumption of the corresponding water tanks. The electric valve for replenishing water to the intermediate-level fire water tank and the electromagnetic flow meter for replenishing water to the intermediate-level fire water tank are used to control the quantitative replenishment of water from the intermediate-level fire water tank to the intermediate-level fire water tank. A level switch for the overflow pipe of the intermediate fire water tank is used to control the drainage of water from the intermediate fire water tank to the reservoir area via the overflow pipe. The electric valve for water supply from the diversion tunnel to the low-level fire water tank and the electromagnetic flow meter for water supply from the diversion tunnel to the low-level fire water tank are used to control the quantitative water supply from the diversion tunnel to the low-level fire water tank. The PLC control system is used for cascade linkage control of each water tank.

2. The system as described in claim 1, characterized in that, The cascaded linkage control of each water tank includes: Determine the water replenishment control mode of the target fire water tank, wherein the target fire water tank includes: the intermediate fire water tank and / or the low-level fire water tank, and the water replenishment control mode includes: flow control water replenishment mode and water level control water replenishment mode; The target fire water tank is replenished based on the flow control water replenishment mode or the water level control water replenishment mode.

3. The system as described in claim 2, characterized in that, Based on the aforementioned flow control water replenishment mode, water replenishment control of the target fire water tank is performed, including: Receive the first monitoring signal of the target outlet electromagnetic flow meter corresponding to the target fire water tank, wherein the target outlet electromagnetic flow meter is the outlet electromagnetic flow meter of the middle fire water tank or the outlet electromagnetic flow meter of the low fire water tank. If the first monitoring signal indicates that the water consumption of the target fire water tank has reached the preset water consumption, the target water supply electric valve corresponding to the target fire water tank is opened to supply water. The target water supply electric valve includes: the high-to-medium-level fire water tank water supply electric valve, and / or the high-to-low-level fire water tank water supply electric valve, and / or the mid-to-low-level fire water tank water supply electric valve. The system receives a second monitoring signal from the target water supply magnetic flow meter corresponding to the target fire water tank, wherein the target water supply magnetic flow meter includes: the high-to-medium level fire water tank electromagnetic flow meter, and / or the high-to-low level fire water tank electromagnetic flow meter, and / or the mid-to-low level fire water tank electromagnetic flow meter; If the second monitoring signal indicates that the water replenishment of the target fire water tank has reached the preset water consumption, then the target water replenishment electric valve is closed to stop water replenishment.

4. The system as described in claim 3, characterized in that, Based on the water level control water replenishment mode, the target fire water tank is replenished with water, including: Receive a third monitoring signal from the target level gauge corresponding to the target fire water tank, wherein the target level gauge includes a mid-level fire water tank level gauge or a low-level fire water tank level gauge, the mid-level fire water tank level gauge includes a mid-level fire water tank float level gauge and / or a mid-level fire water tank submersible level gauge, and the low-level fire water tank level gauge includes a low-level fire water tank float level gauge and / or a low-level fire water tank submersible level gauge; If the third monitoring signal indicates that the target fire water tank meets the preset water replenishment conditions, then the target water replenishment electric valve corresponding to the target fire water tank is opened to replenish water; Receive the fourth monitoring signal from the target level gauge corresponding to the target fire water tank; If the fourth monitoring signal indicates that the target fire water tank meets the preset stop water replenishment conditions, then the target water replenishment electric valve is closed to stop water replenishment.

5. The system as described in claim 4, characterized in that, The preset water replenishment conditions include: the water level of the target fire water tank is lower than the preset water replenishment level or the float level gauge of the target fire water tank issues a low water level alarm; the preset water replenishment stop conditions include: the water level of the target fire water tank is higher than the preset stop water level or the float level gauge of the target fire water tank issues a high water level alarm.

6. The system as described in claim 1, characterized in that, The cascaded linkage control of each water tank also includes: Receive the fifth monitoring signal from the electromagnetic flowmeter of the overflow pipe of the high-level fire water tank; If the fifth monitoring signal indicates that the high-level fire water tank is full and overflowing, then the electric valve for replenishing water from the high-level to the middle-level fire water tank is opened; Receive the sixth monitoring signal from the float level gauge and / or the submersible level gauge of the mid-level fire water tank; If the sixth monitoring signal indicates that the intermediate fire water tank is full and overflowing, then open the level switch of the overflow pipe of the intermediate fire water tank; In response to the fifth monitoring signal indicating that the water in the high-level fire water tank has stopped overflowing, the electric valve for replenishing water from the high-level to the middle-level fire water tank is closed.

7. The system as described in claim 1, characterized in that, The cascaded linkage control of each water tank also includes: The real-time water level of the intermediate fire water tank is determined based on the float level gauge and / or the submersible level gauge of the intermediate fire water tank. If the real-time water level of the intermediate fire water tank meets the preset water replenishment conditions, the electric valve for replenishing water from the high level to the intermediate level fire water tank is opened to replenish water, and the electric valve for replenishing water from the high level to the intermediate level fire water tank is closed when the real-time water level of the intermediate level fire water tank meets the preset stop water replenishment conditions.

8. The system as described in claim 1, characterized in that, The cascaded linkage control of each water tank also includes: The real-time water level of the low-level fire water tank is determined based on the float level gauge and / or the submersible level gauge of the low-level fire water tank. If the real-time water level of the low-level fire water tank meets the preset water replenishment conditions, then the water level information of the high-level fire water tank and the middle-level fire water tank is determined. If the water level information indicates that the high-level fire water tank has reached a high water level, or if the water level information indicates that neither the high-level fire water tank nor the middle-level fire water tank has reached a high water level, then the electric valve for replenishing water from the high-level to the low-level fire water tank is opened to replenish water. If the water level information indicates that the high-level fire water tank has not reached the high water level and the middle-level fire water tank has reached the high water level, then the electric valve for replenishing water from the middle-level to the low-level fire water tank is opened to replenish water.

9. The system as described in claim 1, characterized in that, The cascaded linkage control of each water tank also includes: If the high water level signal of the low-level fire water tank returns, the water supply valve from the diversion tunnel to the low-level fire water tank and the electric water replenishment valve from the high level to the low-level fire water tank will be opened simultaneously. Determine the duration of water replenishment; If the water replenishment duration exceeds a preset time threshold, the electric valve for replenishing water to the middle to low-level fire water tank will be opened. If the low-level fire water tank reports a high water level signal, then the corresponding water supply electric valve for the low-level fire water tank shall be closed.

10. The system as claimed in claim 1, characterized in that, The PLC control system is also used to receive analog water level signals from each fire water tank, high and low water level switching signals, analog electromagnetic flowmeter signals, overflow pipe overflow signals, and switching signals from each electric valve, and send each signal to the monitoring system.

Images