Water changing system and method for fire-fighting water supply side

Abstract

The invention provides a water changing system and method for a fire-fighting water supply side. The water changing system comprises at least one group of fire-fighting pools; the annular pipe network is connected with the water supply end of the fire pool; the at least one group of fire-fighting water devices are connected with the annular pipe network; the water supply pipe network is connected with the water inlet end of the fire pool; the drainage pipeline is connected with the annular pipe network and the fire pool; the water quality sensors are arranged in the annular pipe network and the fire pool; the controller is used for receiving water quality index data, detected by the water quality sensor, of each node of the annular pipe network and the fire pool and comparing the water quality index data with a preset threshold value; if the water quality index data exceed the standard, controlling to start the drainage work of the standard-exceeding water in the annular pipe network and / or the fire pool through the drainage pipeline; and after the drainage work is completed, the water supply pipe network is controlled to be started to replenish water to the annular pipe network and the fire pool. The fire-fighting water quality stability can be ensured, the good fire extinguishing efficiency is maintained, and the pipeline and equipment blocking risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fire water supply, and in particular to a water changing system and method for fire water supply. Background Art

[0002] The fire water supply side mainly includes fire water pools, fire water pumps and ring pipe networks. At present, most of the fire water supply sides are idle for a long time. The fire water reserves in the fire water pools and ring pipe networks are idle for a long time. Even with disinfection measures, there may still be problems with microbial growth, which will affect the water quality, reduce the fire extinguishing efficiency of water, and may also block pipes and fire equipment. If left idle for a long time, impurities such as mud, rust, etc. in the water will settle at the bottom of the pool. When accumulated to a certain extent, it will affect the water quality and may also cause wear and tear on equipment such as water pumps. Regularly replacing all the fire water reserves will result in a large waste of water resources. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a water exchange system and method for the fire water supply side, which can ensure the stability of the water quality of fire water, maintain good fire extinguishing efficiency, and reduce the risk of blockage of pipelines and equipment.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows: a water exchange system for fire water supply side, comprising:

[0005] At least one fire pool;

[0006] A ring pipe network connected to the water supply end of the fire water tank;

[0007] At least one group of fire-fighting water devices connected to the annular pipe network;

[0008] A water supply network connected to the water inlet of the fire water tank;

[0009] A drainage pipe connected to the annular pipe network and the fire water tank;

[0010] Water quality sensors arranged in the annular pipe network and the fire water tank;

[0011] A controller is used to receive water quality index data of each node of the ring pipe network and the fire water pool detected by the water quality sensor, and compare the water quality index data with a preset threshold value; if the water quality index data exceeds the standard, control the start of drainage of the excess water in the ring pipe network and / or the fire water pool through the drainage pipe; after the drainage work is completed, control the start of water supply network to replenish water to the ring pipe network and the fire water pool; the above drainage and replenishment work is repeated until the water quality index data meets the standard.

[0012] Optionally, the water exchange system further includes a pressure sensor and a flow sensor arranged in the annular pipe network and the fire water tank;

[0013] The pressure sensor is used to detect the pressure change of the water in the annular pipe network and the fire water pool; the flow sensor is used to detect the water replenishment and drainage volume of the annular pipe network and the fire water pool;

[0014] The controller is also used to receive the pressure, water replenishment and drainage data of each node of the ring pipe network and the fire water pool detected by the pressure sensor and the flow sensor, and calculate the volume of the water in the ring pipe network and the fire water pool according to the pressure of the water in the ring pipe network and the fire water pool; and calculate the required water change amount according to the difference between the water quality index data and the preset threshold and the volume of the water in the ring pipe network and the fire water pool; receive the water replenishment and drainage of the ring pipe network and the fire water pool, and receive the water replenishment and drainage of the ring pipe network and the fire water pool to ensure that the water change amount meets the standard.

[0015] Optionally, the water quality index data detected by the water quality sensor include pH, turbidity, microbial content, residual chlorine content and / or heavy metal content;

[0016] The controller is also used to calculate the required water exchange amount under a single water quality index or under multiple water quality indexes.

[0017] Optionally, the water exchange system further comprises a water quality sensor disposed in the water supply network;

[0018] The controller is also used to receive water quality index data of the water supply network detected by the water quality sensor; calculate the required water change amount based on the water quality index data of the water supply network combined with the difference between the water quality index data in the ring network and the fire water tank and the preset threshold and the volume of water in the ring network and the fire water tank.

[0019] Optionally, the pressure sensor includes a pressure monitoring device disposed in the annular pipe network and the fire water tank;

[0020] The flow sensor comprises a drainage flow meter arranged between the annular pipe network, the fire water tank and the drainage pipe, and a flow monitoring device arranged between the fire water tank and the water supply pipe network.

[0021] The present invention also provides a water replacement method for a fire water supply side, which is applied to the water replacement device as described above, comprising:

[0022] The water quality sensor detects the water quality index data of each node of the ring pipe network and the fire water tank in real time;

[0023] The controller compares the water quality index data with a preset threshold value;

[0024] If the water quality index data exceeds the standard, a water replacement operation is triggered; if the water quality index data does not exceed the standard, continuous monitoring is performed;

[0025] The controller controls and starts the drainage of excess water in the annular pipe network and / or the fire water pool through the drainage pipe;

[0026] After the drainage work is completed, the controller controls the water supply network to start the water replenishment work for the ring network and the fire water tank;

[0027] After the water replenishment work is completed, the controller again compares the water quality index data detected in real time with the preset threshold value;

[0028] If the water quality data has not exceeded the standard, continue monitoring. If the water quality data exceeds the preset threshold, repeat the above steps.

[0029] Optionally, the water changing method further comprises:

[0030] The pressure sensor detects the pressure changes of the water in the annular pipe network and the fire water tank in real time;

[0031] If the water quality index data exceeds the standard, the controller calculates the volume of the water in the annular pipe network and the fire water tank according to the pressure of the water in the annular pipe network and the fire water tank;

[0032] The controller calculates the required water replacement amount according to the difference between the water quality index data and the preset threshold value and the volume of the water body in the annular pipe network and the fire water tank;

[0033] The controller controls and starts the water replacement work of the annular pipe network and / or the fire water pool;

[0034] The controller ensures that the water quality index data meets the standard by changing water once according to the received water replenishment and drainage data of the annular pipe network and the fire water tank.

[0035] Optionally, the controller calculates the volume of the water in the annular pipe network and the fire water tank according to the pressure of the water in the annular pipe network and the fire water tank, including:

[0036] According to V1 = (a*b*P1) / (ρ*g), the volume of the fire water tank is obtained.

[0037] Wherein, V1 is the volume of the fire water pool, a and b are the length and width of the pool, P1 is the pressure value measured by the pressure sensor at the bottom of the pool, ρ is the density of water, g is the acceleration of gravity, and the pool is a rectangular parallelepiped;

[0038] According to V2=(πr 2 *P2) / (ρ*g) to get the volume of the annular network,

[0039] Wherein, V2 is the volume of the annular pipe network, r is the cross-sectional radius of the annular pipe network, P2 is the pressure value measured by the pressure sensor in the annular pipe network, ρ is the density of water, and g is the acceleration of gravity;

[0040] The controller calculates the required water exchange amount according to the difference between the water quality index data and the preset threshold value and the volume of the water body in the annular pipe network and the fire water tank, including:

[0041] According to Q = V*(C1-C2) / C1, the required water change amount is obtained.

[0042] Among them, Q is the required water exchange volume, V is the total volume of water in the ring pipe network and the fire water tank, C1 is the measured water quality index data, and C2 is the preset threshold value of the water quality index data.

[0043] Optionally, when the water quality index data is multiple water quality indexes,

[0044] According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ),

[0045] CL=m*C11+n*C12+...+j*C1 x ,

[0046] Q=V*CF / CL to get the required water change amount,

[0047] Among them, CF is the weighted difference between the current water quality index and the preset threshold, CL is the weighted current water quality index data, C11...C1 X Current water quality index data for various categories, C21...C2 X is the preset threshold of each type of water quality index data, m...j is the weight of each type of water quality index data, and the sum of all weights is 1.

[0048] Optionally, the controller is further used to receive water quality index data of the water supply network detected by the water quality sensor; calculate the required water exchange amount according to the water quality index data of the water supply network combined with the difference between the water quality index data in the annular pipe network and the fire water tank and a preset threshold value and the volume of the water body in the annular pipe network and the fire water tank, including:

[0049] According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ),

[0050] CH=m*(C11-C31)+n*(C12-C32)+...+j*(C1 x -C3x ),

[0051] Q=V*CF / CH to get the required water change amount,

[0052] Among them, CH is the weighted difference between the current water quality index data and the water quality index data of the water supply network, C31...C3 X It provides water quality index data for various water supply networks.

[0053] The above solution of the present invention includes at least the following beneficial effects:

[0054] The above scheme of the present invention monitors the water quality index data in real time. Once the water quality exceeds the standard, drainage and water replenishment operations are carried out in time, effectively inhibiting the growth of microorganisms, ensuring the good quality of fire-fighting water, and maintaining its fire-fighting efficiency. For example, when the water quality sensor detects that the microbial content exceeds the standard, the controller starts the water replacement process, and the injection of new water dilutes the microbial concentration, so that the water quality returns to the standard, ensuring that the fire-fighting water can play the best fire-fighting effect when a fire occurs.

[0055] Real-time detection and water replacement can avoid excessive accumulation of impurities. When it is detected that the water quality exceeds the standard due to impurities, the drainage process can remove some of the precipitated impurities, and the water replenishment can renew the water body, reduce the wear and tear on equipment such as water pumps, extend the service life of equipment, and ensure stable water quality to ensure the smooth progress of firefighting work.

[0056] The decision on whether to change water and the amount of water to change is made based on the water quality test data. By comparing the water quality index data with the preset threshold, water is changed only when the water quality exceeds the standard, and the required amount of water change is accurately calculated based on the degree of water quality exceeding the standard and the volume of the water body, thus avoiding unnecessary waste of water resources. For example, when only some water quality indicators are slightly exceeded, only a small amount of water needs to be replaced to make the water quality meet the standard, which greatly saves water resources compared to changing all the water.

[0057] The controller automatically receives data from water quality sensors, automatically determines whether the water quality exceeds the standard, and automatically controls drainage and water replenishment, without the need for frequent manual inspection and operation. This not only saves labor costs, but also responds to water quality changes in a timely and accurate manner, ensuring that the fire water supply system is always in good condition. For example, at night or when management personnel are not on site, the system can still operate automatically and deal with water quality problems in a timely manner, improving the management efficiency and reliability of the fire water supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a structural schematic diagram of the water exchange system on the fire water supply side of the present invention.

[0059] Figure 2 The present invention is a flow chart of a water changing method for a fire water supply side.

[0060] Description of reference numerals:

[0061] 1. Fire water tank; 2. Ring pipe network; 3. Fire water device; 31. Indoor fire hydrant; 32. Outdoor fire hydrant; 33. Water pump coupler; 4. Water supply network; 5. Drainage pipe; 6. Suction trough; 7. Electric butterfly valve group; 8. Water pump control valve; 9. Fire water pump; 10. Pipeline filter; 11. First check valve; 12. Pressure regulating valve; 13. Flow monitoring device; 14. Drainage control valve; 15. Second check valve; 16. Drainage filter; 17. Drainage flow meter, 18. Pressure monitoring device, 19. Water supply control valve. DETAILED DESCRIPTION

[0062] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0063] like Figure 1 As shown, an embodiment of the present invention provides a water exchange system for a fire water supply side, comprising:

[0064] At least one fire water pool;

[0065] A ring-shaped pipe network 2 connected to the water supply end of the fire water tank 1;

[0066] At least one group of fire-fighting water devices 3 connected to the annular pipe network 2;

[0067] A water supply network 4 connected to the water inlet end of the fire water tank 1;

[0068] A drainage pipe connected to the annular pipe network 2 and the fire water tank 1;

[0069] Water quality sensors arranged in the annular pipe network 2 and the fire water pool 1;

[0070] A controller is used to receive water quality index data of each node of the ring network 2 and the fire water tank 1 detected by the water quality sensor, and compare the water quality index data with a preset threshold value; if the water quality index data exceeds the standard, control the start of drainage of the excess water in the ring network 2 and / or the fire water tank 1 through the drainage pipe; after the drainage work is completed, control the start of water replenishment work of the water supply network 4 to the ring network 2 and the fire water tank 1; the above drainage and replenishment work is repeated until the water quality index data meets the standard.

[0071] The present invention monitors water quality index data in real time. Once the water quality exceeds the standard, drainage and water replenishment operations are carried out in time to effectively inhibit the growth of microorganisms, ensure the good quality of fire-fighting water, and maintain its fire-fighting efficiency. For example, when the water quality sensor detects that the microbial content exceeds the standard, the controller starts the water replacement process. The injection of new water dilutes the microbial concentration, so that the water quality returns to the standard, ensuring that the fire-fighting water can play the best fire-fighting effect when a fire occurs.

[0072] Real-time detection and water replacement can avoid excessive accumulation of impurities. When it is detected that the water quality exceeds the standard due to impurities, the drainage process can remove some of the precipitated impurities, and the water replenishment can renew the water body, reduce the wear and tear on equipment such as water pumps, extend the service life of equipment, and ensure stable water quality to ensure the smooth progress of firefighting work.

[0073] The decision on whether to change water and the amount of water to change is made based on the water quality test data. By comparing the water quality index data with the preset threshold, water is changed only when the water quality exceeds the standard, and the required amount of water change is accurately calculated based on the degree of water quality exceeding the standard and the volume of the water body, thus avoiding unnecessary waste of water resources. For example, when only some water quality indicators are slightly exceeded, only a small amount of water needs to be replaced to make the water quality meet the standard, which greatly saves water resources compared to changing all the water.

[0074] The controller automatically receives data from water quality sensors, automatically determines whether the water quality exceeds the standard, and automatically controls drainage and water replenishment, without the need for frequent manual inspection and operation. This not only saves labor costs, but also responds to water quality changes in a timely and accurate manner, ensuring that the fire water supply system is always in good condition. For example, at night or when management personnel are not on site, the system can still operate automatically and deal with water quality problems in a timely manner, improving the management efficiency and reliability of the fire water supply system.

[0075] Specifically, the fire water device 3 includes an indoor fire hydrant 31, an outdoor fire hydrant 32 and a water pump adapter 33. The controller is specifically a programmable logic controller (PLC) or an industrial control computer (IPC).

[0076] The controller controls the start and stop of the drainage control valve 14 installed on the drainage pipe, thereby controlling the start and stop of the drainage of excess water in the annular pipe network 2 and / or the fire water pool 1. The controller controls the start and stop of the water replenishment control valve 19 installed on the water supply pipe network 4, thereby controlling the start and stop of the water replenishment work of the annular pipe network 2 and / or the fire water pool 1.

[0077] In an optional embodiment of the present invention, the water exchange system further comprises a pressure sensor and a flow sensor arranged in the annular pipe network 2 and the fire water tank 1;

[0078] The pressure sensor is used to detect the pressure change of the water in the annular pipe network 2 and the fire water pool 1; the flow sensor is used to detect the water replenishment and drainage of the annular pipe network 2 and the fire water pool 1;

[0079] The controller is also used to receive the pressure, water replenishment and drainage data of each node of the ring pipe network 2 and the fire water pool 1 detected by the pressure sensor and the flow sensor, and calculate the volume of the water body in the ring pipe network 2 and the fire water pool 1 according to the pressure of the water body in the ring pipe network 2 and the fire water pool 1; and calculate the required water change amount according to the difference between the water quality index data and the preset threshold and the volume of the water body in the ring pipe network 2 and the fire water pool 1; receive the water replenishment and drainage of the ring pipe network 2 and the fire water pool 1, and receive the water replenishment and drainage of the ring pipe network 2 and the fire water pool 1 to ensure that the water change amount meets the standard.

[0080] In this example, the pressure sensor detects the pressure change of the water in the annular pipe network 2 and the fire water tank 1, and uses the relationship between pressure and volume (for example, for a container of regular shape, it can be calculated according to the corresponding formula) to accurately calculate the volume of the water in the annular pipe network 2 and the fire water tank 1. The controller combines the difference between the water quality index data and the preset threshold value and the accurate water volume to more accurately calculate the required water exchange amount.

[0081] The controller monitors and adjusts the water changing process in real time according to the received water replenishment and drainage data to ensure that the accurately calculated water change amount is finally achieved, thereby ensuring that the water quality can meet the standard. If a deviation is found between the actual water change amount and the calculated value during the water changing process, the controller can adjust the water replenishment or drainage operation in time to ensure the effectiveness and accuracy of the water changing work.

[0082] The abnormal pressure change detected by the pressure sensor may indicate problems such as pipe blockage and pool structure damage; the abnormal flow detected by the flow sensor may mean pipe leakage or valve failure, etc. By monitoring these data in real time, the controller can promptly detect potential problems in the system and issue early warnings, which facilitates maintenance personnel to promptly check and repair, avoiding the impact of equipment failure on fire water supply when a fire occurs.

[0083] In an optional embodiment of the present invention, the water quality index data detected by the water quality sensor includes pH, turbidity, microbial content, residual chlorine content and / or heavy metal content;

[0084] The controller is also used to calculate the required water exchange amount under a single water quality index or under multiple water quality indexes.

[0085] In this example, the water quality sensor can detect multiple indicators such as pH, turbidity, microbial content, residual chlorine content and / or heavy metal content, and comprehensively reflect the water quality of fire-fighting water. Any abnormality in a single indicator may affect the fire-fighting effect. For example, excessive microbial content will cause water deterioration, insufficient residual chlorine content cannot effectively sterilize, and abnormal pH may corrode pipes. By monitoring these indicators, it is possible to accurately determine whether the water quality meets the standards, providing a comprehensive basis for water replacement decisions.

[0086] Calculating the required amount of water change under a single water quality indicator is simple, direct and targeted. When a certain indicator slightly exceeds the standard, the corresponding amount of water change can be quickly calculated to avoid excessive water change and waste of water resources. For example, if the residual chlorine content is slightly low, only a small amount of new chlorinated water is needed to restore it to normal. Calculating the amount of water change under multiple water quality indicators comprehensively considers the weight of each indicator, which is more in line with the actual complex water quality situation. Different indicators have different degrees of influence on water quality. Setting corresponding weights can more scientifically determine the total amount of water change and ensure that all key indicators meet the standards in one water change.

[0087] In an optional embodiment of the present invention, the water exchange system further includes a water quality sensor disposed in the water supply network 4;

[0088] The controller is also used to receive water quality index data of the water supply network 4 detected by the water quality sensor; calculate the required water change amount based on the water quality index data of the water supply network 4 combined with the difference between the water quality index data in the ring network 2 and the fire water tank 1 and the preset threshold and the volume of water in the ring network 2 and the fire water tank 1.

[0089] In this example, the calculation can be made more realistic by combining the water quality index data of the water supply network 4. For example, if the microbial content in the water supply network 4 is low, while the microbial content in the ring network 2 and the fire water tank 1 exceeds the standard, the water quality of the water supply network 4 is considered in the calculation, which will reduce the amount of water change and avoid unnecessary waste of water resources; on the contrary, if the water quality of the water supply network 4 is not ideal, the required amount of water change can be more accurately evaluated to ensure that the overall water quality meets the standard after the water change.

[0090] Understanding the water quality of the water supply network 4 helps the system to comprehensively control the water quality. If there are problems with the water quality of the water supply network 4 itself, knowing in advance and considering it when changing the water can prevent the newly injected water from causing secondary pollution to the fire water pool 1 and the ring network 2. For example, if the heavy metal content of the water supply network 4 exceeds the standard, more stringent purification measures or increased water change volume will be required when changing the water to ensure that the overall water quality of the fire water supply system is stable and meets the fire water requirements.

[0091] By monitoring the water quality of the water supply network 4, the system can detect possible problems at the source of water supply in advance, such as water source pollution, water quality changes caused by aging pipes, etc. This helps to take timely response measures, such as notifying relevant departments to deal with water source problems, or adjusting water replacement strategies to ensure the normal operation of the fire water supply system at critical moments and avoid affecting firefighting work due to water quality problems in the water supply network 4.

[0092] In an optional embodiment of the present invention, the pressure sensor includes a pressure monitoring device 18 disposed in the annular pipe network 2 and the fire water tank 1;

[0093] The flow sensor includes a drainage flow meter 17 disposed between the annular pipe network 2 , the fire water tank 1 and the drainage pipe, and a flow monitoring device 13 disposed between the fire water tank 1 and the water supply pipe network 4 .

[0094] In an optional embodiment of the present invention, a water suction trough 6 is provided at the bottom of the fire water pool 1 near the fire water pump 9, and the water suction trough 6 is connected to the fire water pump 9 through a water suction pipe, and the fire water pump 9 is connected to the annular pipe network 2.

[0095] In this example, the fire pump 9 is used to suck the water in the water suction trough 6 at the bottom of the fire pool 1 through the suction pipe, and then strongly pressurize it to the annular pipe network 2. Ensure that sufficient water pressure is maintained in the annular pipe network 2, and ensure that each fire water device 3 connected to the annular pipe network 2 can obtain sufficient water in a timely and efficient manner to meet the needs of fire fighting operations. In daily water exchange operations, the fire pump 9 assists in completing the water circulation between the fire pool 1 and the annular pipe network 2, and cooperates with the water quality monitoring and control of the water exchange system to maintain good fluidity of the water body in the entire system, promote uniform mixing of water quality, and facilitate more accurate detection of water quality and water exchange operations, thereby ensuring that fire water is always available.

[0096] An electric butterfly valve group 7, a water pump control valve 8, a pipeline filter 10, a first check valve 11 and a pressure regulating valve 12 are also provided between the water supply end of the fire water tank 1 and the annular pipe network 2. A second check valve 15 and a drainage filter 16 are also provided between the annular pipe network 2, the fire water tank 1 and the drainage pipe 5.

[0097] The electric butterfly valve group 7 is mainly used to control the water flow and flow rate between the fire water tank 1 and the annular pipe network 2. Through electric control, remote operation can be achieved, which is convenient and fast. During normal fire water supply, the flow rate can be accurately adjusted according to the fire water demand; when changing water or maintaining the system, the water flow can be quickly cut off to facilitate subsequent operations.

[0098] The water pump control valve 8 is used to control the operating state of the fire water pump 9. It can automatically adjust the opening and closing of the water pump and the working frequency according to the changes in system pressure and flow. When the demand for fire water increases and the system pressure drops, the water pump control valve 8 will start the fire water pump 9 in time and adjust its working parameters to ensure that the annular pipe network 2 has sufficient water pressure and water volume; when the system pressure is too high, it can control the water pump to reduce the working intensity, thereby protecting the water pump and stabilizing the system pressure.

[0099] The pipe filter 10 is installed on the pipe between the fire water tank 1 and the annular pipe network 2, and its function is to filter impurities in the water, such as silt, rust, granular pollutants, etc. If these impurities enter the annular pipe network 2 and the fire water device 3, they may cause problems such as pipe blockage and equipment wear. Through filtering, the cleanliness of fire water can be guaranteed, the service life of system equipment can be extended, and the smooth fire water supply can be guaranteed.

[0100] The function of the first check valve 11 is to prevent the water in the annular pipe network 2 from flowing back to the fire water tank 1. When the fire water pump 9 stops working or the system pressure is abnormal, the water flow is prevented from flowing in reverse, and the water in the fire water tank 1 is prevented from being consumed unnecessarily, so as to ensure that the fire water tank 1 can always store enough fire water to meet the water supply demand in case of sudden fire.

[0101] The pressure regulating valve 12 is used to adjust the water pressure between the fire water tank 1 and the annular pipe network 2 to keep it within a set range. During the fire water supply process, different fire water devices 3 may have different requirements for water pressure. The pressure regulating valve 12 can automatically adjust the water pressure according to actual needs to ensure that each fire water point can obtain appropriate water pressure, thereby improving the stability and reliability of fire water supply.

[0102] The second check valve 15 is installed between the annular pipe network 2, the fire water tank 1 and the drainage pipe 5, and its main function is to prevent the sewage in the drainage pipe 5 from flowing back to the annular pipe network 2 and the fire water tank 1. During the drainage process, it ensures that the drainage is carried out smoothly, and at the same time avoids the pollution of the fire water supply system by the drainage, and ensures the safety of the water quality in the fire water tank 1 and the annular pipe network 2.

[0103] The drainage filter 16 is arranged on the drainage pipe 5 to filter impurities in the drainage. During the water change process, the impurities such as silt, rust, etc. in the discharged water are filtered out to prevent these impurities from clogging the drainage pipe, ensuring the normal operation of the drainage system, and also facilitating the subsequent treatment of the discharged water.

[0104] like Figure 2 As shown, the present invention also provides a water replacement method for a fire water supply side, comprising:

[0105] Step 11, the water quality sensor detects the water quality index data of each node of the ring pipe network 2 and the fire water tank 1 in real time;

[0106] Step 12, the controller compares the water quality index data with a preset threshold;

[0107] Step 13, if the water quality index data exceeds the standard, trigger the water replacement operation, if the water quality index data does not exceed the standard, continue monitoring;

[0108] Step 14, the controller controls to start the drainage of excess water in the annular pipe network 2 and / or the fire water pool 1 through the drainage pipe;

[0109] Step 15, after the drainage work is completed, the controller controls the water supply network 4 to start the water replenishment work for the annular pipe network 2 and the fire water pool 1;

[0110] Step 16, after the water replenishment work is completed, the controller again compares the real-time detected water quality index data with the preset threshold value;

[0111] Step 17: If the water quality data has not exceeded the standard, continue monitoring; if the water quality data exceeds the preset threshold, repeat the above steps.

[0112] The present invention monitors the water quality index data of each node of the annular pipe network 2 and the fire water pool 1 in real time through the water quality sensor, and can timely capture the water quality changes. Once the water quality index data exceeds the standard, the water replacement operation is immediately triggered, avoiding the further deterioration of the water quality problem and the impact on the quality of fire water and fire extinguishing efficiency. For example, if the microbial content just shows a trend of exceeding the standard, it can be discovered and replaced in time to prevent the large-scale reproduction of microorganisms and the deterioration of the water body.

[0113] The water quality of firefighting water is always up to standard by adopting the cycle of drainage-water replenishment-re-testing-re-treatment. The water quality is tested again after each water replenishment. If it still exceeds the standard, the water is replaced. This dynamic adjustment method ensures that the water quality in the system is stable and reliable, and meets the demand for firefighting water at any time.

[0114] The entire water exchange process is automatically controlled by the controller, which reduces human intervention and improves the accuracy and efficiency of water exchange operations. The controller automatically judges, makes decisions and executes according to preset thresholds and real-time data, reducing errors and omissions caused by human factors and saving labor costs.

[0115] In an optional embodiment of the present invention, the water changing method further comprises:

[0116] Step 201, the pressure sensor detects the pressure changes of the water in the annular pipe network 2 and the fire water pool 1 in real time;

[0117] Step 202: If the water quality index data exceeds the standard, the controller calculates the volume of the water in the annular pipe network 2 and the fire water pool 1 according to the pressure of the water in the annular pipe network 2 and the fire water pool 1;

[0118] Step 203, the controller calculates the required water replacement amount according to the difference between the water quality index data and the preset threshold value and the volume of the water in the annular pipe network 2 and the fire water tank 1;

[0119] Step 204, the controller controls to start the water replacement work of the annular pipe network 2 and / or the fire water pool 1;

[0120] Step 205: The controller ensures that the water quality index data meets the standard in one water change according to the received water replenishment and drainage data of the annular pipe network 2 and the fire water tank 1.

[0121] In this example, the pressure sensor detects the pressure changes of the water in the annular pipe network 2 and the fire water tank 1 in real time. When the water quality index data exceeds the standard, the controller can accurately calculate the water volume based on the pressure data. For containers of regular shapes, the corresponding formula is used to obtain the accurate volume, providing a reliable basis for the subsequent calculation of the water exchange volume, avoiding inaccurate water exchange volume due to volume estimation errors.

[0122] The controller calculates the required water change amount by combining the difference between the water quality index data and the preset threshold value and the precise water volume, and can obtain a water change amount that better meets actual needs, whether it is a single water quality index or multiple water quality indexes. This precise calculation avoids the problem of wasting water resources due to excessive water changes or failing to meet water quality standards due to insufficient water changes, and improves the efficiency of water resource utilization.

[0123] The controller monitors and fine-tunes the water exchange process in real time based on the received water replenishment and drainage data of the annular pipe network 2 and the fire water pool 1, ensuring that the water quality index data can be achieved with one water exchange, thus reducing the time and resource waste caused by multiple water exchanges, improving the efficiency and reliability of water exchange work, and ensuring that the fire water supply system is in a good water quality state at any time.

[0124] In an optional embodiment of the present invention, the controller calculates the volume of the water in the annular pipe network 2 and the fire water pool 1 according to the pressure of the water in the annular pipe network 2 and the fire water pool 1, including:

[0125] According to V1 = (a*b*P1) / (ρ*g), the volume of fire water tank 1 is obtained.

[0126] Wherein, V1 is the volume of the fire water pool 1, a and b are the length and width of the pool, P1 is the pressure value measured by the pressure sensor at the bottom of the pool, ρ is the density of water, g is the acceleration of gravity, and the pool is a rectangular parallelepiped;

[0127] According to V2=(πr 2 *P2) / (ρ*g) to get the volume of the annular network 2,

[0128] Wherein, V2 is the volume of the annular pipe network 2, r is the cross-sectional radius of the annular pipe network 2, P2 is the pressure value measured by the pressure sensor in the annular pipe network 2, ρ is the density of water, and g is the acceleration of gravity;

[0129] The controller calculates the required water exchange amount according to the difference between the water quality index data and the preset threshold value and the volume of the water in the annular pipe network 2 and the fire water tank 1, including:

[0130] According to Q = V*(C1-C2) / C1, the required water change amount is obtained.

[0131] Wherein, Q is the required water exchange volume, V is the total volume of water in the ring pipe network 2 and the fire water tank 1, C1 is the measured water quality index data, and C2 is the preset threshold value of the water quality index data.

[0132] In this example, the pressure data monitored in real time by the pressure sensor can accurately calculate the volume of water in the fire water pool 1 and the ring pipe network 2. These precise volume data provide an indispensable basis for the subsequent operation of the entire water exchange system, fundamentally ensuring the accuracy of system calculation and operation.

[0133] By accurately calculating the amount of water to be replaced, each water replacement operation can accurately match the water quality improvement needs. During the water replacement process, it can properly remove excessive substances and replenish new water to ensure that the water quality in the ring pipe network 2 and the fire water tank 1 quickly reaches the preset standard, providing stable and reliable water quality guarantee for fire water and meeting the strict requirements for water quality during fire emergencies.

[0134] In an optional embodiment of the present invention, when the water quality index data is multiple water quality indexes,

[0135] According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ),

[0136] CL=m*C11+n*C12+...+j*C1 x ,

[0137] Q=V*CF / CL to get the required water change amount,

[0138] Among them, CF is the weighted difference between the current water quality index and the preset threshold, CL is the weighted current water quality index data, C11...C1 X Current water quality index data for various categories, C21...C2X is the preset threshold of each type of water quality index data, m...j is the weight of each type of water quality index data, and the sum of all weights is 1.

[0139] In this example, in the actual fire water supply system, water quality is often affected by multiple factors and presents a complex state. The water exchange calculation method under multiple water quality indicators comprehensively evaluates the water quality by considering multiple water quality indicators, such as pH, turbidity, microbial content, residual chlorine content, and heavy metal content. Compared with the calculation of a single water quality indicator, it can more accurately reflect the actual condition of the water in the fire water pool 1 and the ring pipe network 2, and avoid misjudgment of water quality due to ignoring certain key indicators.

[0140] Different firefighting application scenarios and geographical environments have different requirements for water quality. For example, in some industrial areas, people may be more sensitive to heavy metal content; while in crowded places, microbial content and residual chlorine content are more critical. This calculation method can flexibly adapt to various water quality requirements by setting weights for different water quality indicators, ensuring that the amount of water replacement that meets actual needs can be accurately calculated in any case.

[0141] By using weights to perform weighted calculations on different water quality indicators, the different degrees of influence of each indicator on water quality are fully considered. For example, for the microbial content indicator that has a greater impact on the fire extinguishing effect, a higher weight can be given so that when calculating the amount of water change, the excess of this indicator can be more fully considered. In this way, the amount of water change can be determined more accurately, avoiding water resource waste or water quality problems caused by unreasonable water change.

[0142] As time goes by and the environment changes, the water quality in the fire water supply system will also change dynamically. The multi-water quality index calculation method can dynamically adjust the calculation of water change volume according to the changes in water quality index data in real time. For example, when microorganisms grow rapidly in a certain period, causing their content indicators to change, the system can respond quickly, recalculate and adjust the water change volume to ensure that the water quality is always up to standard.

[0143] In an optional embodiment of the present invention, the controller is further used to receive water quality index data of the water supply network 4 detected by the water quality sensor; according to the water quality index data of the water supply network 4 combined with the difference between the water quality index data in the annular pipe network 2 and the fire water tank 1 and the preset threshold value and the volume of the water body in the annular pipe network 2 and the fire water tank 1, the required water exchange amount is calculated, including:

[0144] According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ),

[0145] CH=m*(C11-C31)+n*(C12-C32)+...+j*(C1 x -C3 x ),

[0146] Q=V*CF / CH to get the required water change amount,

[0147] Among them, CH is the weighted difference between the current water quality index data and the water quality index data of the water supply network 4, C31...C3 X 4 water quality index data for various types of water supply networks.

[0148] In this example, the calculation of water exchange volume only considers the water quality of the ring pipe network 2 and the fire water tank 1, and incorporates the water quality index data of the water supply network 4, making the calculation basis more comprehensive. The weighted difference is calculated through the formula, and the weights of various water quality indicators are fully considered, so that the water exchange volume calculation is highly consistent with the actual water quality conditions, avoiding the deviation of water exchange volume caused by ignoring the water quality of the water supply network 4, accurately matching the water exchange demand, and reducing water resource waste or insufficient water exchange.

[0149] Calculation based on the water quality of the water supply network 4 can effectively avoid the water quality problem of the newly injected water (from the water supply network 4) affecting the water replacement effect. When the water quality of the water supply network 4 is good, the amount of water replacement can be appropriately reduced; if the water quality of the water supply network 4 is poor, the amount of water replacement can be adjusted in advance or purification measures can be taken to ensure that the water quality of the fire water pool 1 and the ring network 2 meets the standards and maintain the high quality of fire water.

[0150] The water quality of the water supply network 4 fluctuates in different regions and at different times. This calculation method can dynamically adjust the water replacement amount according to the changes in the water quality of the water supply network 4 in real time. For example, when the water source is seasonally polluted, the water quality of the water supply network 4 changes, and the system can respond in time and recalculate the water replacement amount to ensure the stability of the water quality of the fire water supply system and adapt to the complex and changing water supply environment.

[0151] Accurate calculation of water exchange volume avoids unnecessary excessive water exchange, reduces water resource consumption and drainage treatment costs. At the same time, it ensures the stability of water quality in the fire water supply system, reduces equipment maintenance and replacement costs caused by water quality problems, and improves the economy of the overall operation of the system.

[0152] It should be noted that the method is a method corresponding to the above-mentioned system, and all implementation methods in the above-mentioned system embodiments are applicable to the embodiments of the method and can achieve the same technical effects.

[0153] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A water exchange system for fire water supply side, characterized in that: include: At least one fire water pool (1); A ring-shaped pipe network (2) connected to the water supply end of the fire water tank (1); At least one group of fire-fighting water devices (3) connected to the annular pipe network (2); A water supply network (4) connected to the water inlet end of the fire water tank (1); A drainage pipe (5) connected to the annular pipe network (2) and the fire water tank (1); Water quality sensors arranged in the annular pipe network (2) and the fire water pool (1); A controller, the controller is used to receive water quality index data of each node of the ring pipe network (2) and the fire water pool (1) detected by the water quality sensor, and compare the water quality index data with a preset threshold value; if the water quality index data exceeds the standard, control the start of drainage of the excess water in the ring pipe network (2) and / or the fire water pool (1) through the drainage pipe (5); after the drainage work is completed, control the start of water replenishment work of the water supply pipe network (4) to the ring pipe network (2) and the fire water pool (1); and cycle the above drainage and replenishment work until the water quality index data meets the standard.

2. The water exchange system for fire water supply side according to claim 1, characterized in that: It also includes a pressure sensor and a flow sensor arranged in the annular pipe network (2) and the fire water pool (1); The pressure sensor is used to detect the pressure change of the water in the annular pipe network (2) and the fire water pool (1); the flow sensor is used to detect the water replenishment and drainage volume of the annular pipe network (2) and the fire water pool (1); The controller is also used to receive the pressure, water replenishment and drainage data of each node of the annular pipe network (2) and the fire water pool (1) detected by the pressure sensor and the flow sensor, and calculate the volume of the water in the annular pipe network (2) and the fire water pool (1) according to the pressure of the water in the annular pipe network (2) and the fire water pool (1); and calculate the required water replacement amount according to the difference between the water quality index data and a preset threshold value and the volume of the water in the annular pipe network (2) and the fire water pool (1); receive the water replenishment amount and drainage amount of the annular pipe network (2) and the fire water pool (1) to ensure that the water replacement amount meets the standard.

3. The water exchange system for fire water supply side according to claim 2, characterized in that: The water quality index data detected by the water quality sensor include pH, turbidity, microbial content, residual chlorine content and / or heavy metal content; The controller is also used to calculate the required water exchange amount under a single water quality index or under multiple water quality indexes.

4. The water exchange system for fire water supply side according to claim 3, characterized in that: It also includes a water quality sensor arranged in the water supply network (4); The controller is also used to receive water quality index data of the water supply network (4) detected by the water quality sensor; and calculate the required water exchange amount based on the water quality index data of the water supply network (4) combined with the difference between the water quality index data in the annular network (2) and the fire water tank (1) and a preset threshold value and the volume of water in the annular network (2) and the fire water tank (1).

5. The water exchange system for fire water supply side according to claim 2, characterized in that: The pressure sensor comprises a pressure monitoring device (18) arranged in the annular pipe network (2) and the fire water tank (1); The flow sensor comprises a drainage flow meter (17) arranged between the annular pipe network (2), the fire water tank (1) and the drainage pipe (5), and a flow monitoring device (13) arranged between the fire water tank (1) and the water supply pipe network (4).

6. A water changing method for a fire water supply side, applied to the water changing device for a fire water supply side according to any one of claims 1 to 5, characterized in that: include: The water quality sensor detects water quality index data of each node of the annular pipe network (2) and the fire water pool (1) in real time; The controller compares the water quality index data with a preset threshold value; If the water quality index data exceeds the standard, a water replacement operation is triggered; if the water quality index data does not exceed the standard, continuous monitoring is performed; The controller controls and starts the drainage of excess water in the annular pipe network (2) and / or the fire water pool (1) through the drainage pipe (5); After the drainage work is completed, the controller controls the water supply network (4) to start the water replenishment work for the annular network (2) and the fire water pool (1); After the water replenishment work is completed, the controller again compares the water quality index data detected in real time with the preset threshold value; If the water quality data has not exceeded the standard, continue monitoring. If the water quality data exceeds the preset threshold, repeat the above steps.

7. The water replacement method for fire water supply side according to claim 6, characterized in that: Also includes: The pressure sensor detects the pressure changes of the water bodies in the annular pipe network (2) and the fire water pool (1) in real time; If the water quality index data exceeds the standard, the controller calculates the volume of the water in the annular pipe network (2) and the fire water pool (1) according to the pressure of the water in the annular pipe network (2) and the fire water pool (1); The controller calculates the required water exchange amount based on the difference between the water quality index data and a preset threshold value and the volume of water in the annular pipe network (2) and the fire water tank (1); The controller controls and starts the water replacement work of the annular pipe network (2) and / or the fire water pool (1); The controller ensures that the water quality index data meets the standard in one water change based on the received water replenishment and drainage data of the annular pipe network (2) and the fire water tank (1).

8. The water replacement method for fire water supply side according to claim 7, characterized in that: The controller calculates the volume of the water in the annular pipe network (2) and the fire water pool (1) according to the pressure of the water in the annular pipe network (2) and the fire water pool (1), including: According to V1 = (a*b*P1) / (ρ*g), the volume of the fire water pool (1) is obtained. Wherein, V1 is the volume of the fire water pool (1), a and b are the length and width of the pool, P1 is the pressure value measured by the pressure sensor at the bottom of the pool, ρ is the density of water, g is the gravitational acceleration, and the pool is a rectangular parallelepiped; According to V2=(πr 2 *P2) / (ρ*g) to obtain the volume of the annular network (2), Wherein, V2 is the volume of the annular pipe network (2), r is the cross-sectional radius of the annular pipe network (2), P2 is the pressure value measured by the pressure sensor in the annular pipe network (2), ρ is the density of water, and g is the acceleration due to gravity; The controller calculates the required water exchange amount according to the difference between the water quality index data and a preset threshold value and the volume of water in the annular pipe network (2) and the fire water pool (1), including: According to Q = V*(C1-C2) / C1, the required water change amount is obtained. Among them, Q is the required water exchange volume, V is the total volume of water in the ring pipe network and the fire water tank, C1 is the measured water quality index data, and C2 is the preset threshold value of the water quality index data.

9. The water replacement method for fire water supply side according to claim 8, characterized in that: When the water quality index data is multiple water quality indexes, According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ), CL=m*C11+n*C12+...+j*C1 x , Q=V*CF / CL to get the required water change amount, Among them, CF is the weighted difference between the current water quality index and the preset threshold, CL is the weighted current water quality index data, C11...C1 X Current water quality index data for various categories, C21...C2 X is the preset threshold of each type of water quality index data, m...j is the weight of each type of water quality index data, and the sum of all weights is 1.

10. The water replacement method for fire water supply side according to claim 9, characterized in that: The controller is also used to receive water quality index data of the water supply network (4) detected by the water quality sensor; and calculate the required water exchange amount according to the water quality index data of the water supply network (4) combined with the difference between the water quality index data in the annular pipe network (2) and the fire water pool (1) and a preset threshold value and the volume of water in the annular pipe network (2) and the fire water pool (1), including: According to CF = m*(C11-C21)+n*(C12-C22)+...+j*(C1 x -C2 x ), CH=m*(C11-C31)+n*(C12-C32)+...+j*(C1 x -C3 x ), Q=V*CF / CH to get the required water change amount, Among them, CH is the weighted difference between the current water quality index data and the water quality index data of the water supply network (4), C31...C3 X (4) Water quality index data for various types of water supply networks.

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