Intelligent water supply monitoring and control system for domestic drinking water

Abstract

The utility model provides an intelligent domestic drinking water supply monitoring control system, and belongs to the technical field of water supply monitoring. The intelligent domestic drinking water supply monitoring and control system comprises water quality monitoring equipment, a PLC (Programmable Logic Controller), microorganism detection equipment, a pipeline expansion piece, a propeller type flow meter and a differential pressure sensor, the PLC is respectively connected with the water quality monitoring equipment, the microbiological detection equipment, the pipeline expansion piece, the propeller type flow velocity meter and the differential pressure sensor; the water quality monitoring equipment is configured to monitor water quality data; the PLC controller is configured to control the microbiological detection equipment to start working when monitoring that the water quality data exceeds a preset value; the propeller type flow velocity meter is arranged on the straight pipe section of the water supply pipeline, and the differential pressure sensors are arranged at the reducing position, the expanding position, the valve position and the branch position of the water supply pipeline. The problem that in the prior art, water supply regulation and control are lack of accuracy can be solved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of water supply monitoring, in particular to a smart water supply monitoring and control system for drinking water. BACKGROUND

[0002] Early on, artificial periodic sampling methods were used to detect the water quality of source water and pipe network water, the detection items were limited and time-consuming, resulting in serious lag in data feedback, and it was difficult to reflect the water quality changes in real time. With the advancement of technology, automatic monitoring equipment has been introduced into some water supply systems to achieve online collection of some flow data. However, the existing water supply monitoring and control system focuses on flow and pressure monitoring in water power monitoring, and pays insufficient attention to flow rate distribution, head loss and other parameters. At the same time, water quality monitoring and water power monitoring are separated, the monitoring results of water power parameters cannot be well combined with water quality changes, and it is difficult to achieve precise water supply scheduling and pipe network optimization. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present disclosure provide a smart water supply monitoring and control system for drinking water to solve the problem of lack of precision in water supply regulation in the prior art.

[0004] The embodiments of the present disclosure provide a smart water supply monitoring and control system for drinking water, comprising:

[0005] a water quality monitoring device, a PLC controller, a microorganism detection device, a pipe expander, a propeller flowmeter and a differential pressure sensor;

[0006] The PLC controller is connected with the water quality monitoring device, the microorganism detection device, the pipe expander, the propeller flowmeter and the differential pressure sensor respectively; the water quality monitoring device is configured to monitor water quality data; the PLC controller is configured to control the microorganism detection device to start working when the water quality data is monitored to exceed a preset value;

[0007] The propeller flowmeter is arranged at a straight pipe section of the water supply pipeline, and the differential pressure sensor is arranged at a reduced diameter, an expanded diameter, a valve and a branch position of the water supply pipeline.

[0008] In an exemplary embodiment of the present disclosure, a smart water supply monitoring and control system for drinking water further comprises:

[0009] a first flowmeter arranged at a water inlet of the water supply pipeline;

[0010] a plurality of second flowmeters, the plurality of second flowmeters are arranged at a plurality of first water switch positions respectively, and the first water switch is a previous stage water switch at an end of the water supply pipeline;

[0011] A pressure switch is arranged at the water inlet of the water supply pipeline, and the pressure switch is configured to disconnect the power supply of the water supply pump when the pressure at the water inlet is greater than a preset pressure value.

[0012] The first flow meter, the plurality of second flow meters, and the pressure switch are connected to the PLC controller.

[0013] The PLC controller is further configured to calculate the amount of water in the water supply pipeline based on the output data of the first flow meter and the second flow meters, and to disconnect the power supply of the water supply pump when the amount of water in the water supply pipeline is greater than a water amount threshold.

[0014] In an exemplary embodiment of the present disclosure, a water quality monitoring device comprises:

[0015] A turbidity meter, a temperature sensor, and a residual chlorine analyzer.

[0016] The turbidity meter, the temperature sensor, and the residual chlorine analyzer are connected to the PLC controller.

[0017] The temperature sensor is connected to the turbidity meter, the residual chlorine analyzer, the microbial detection device, and the propeller flowmeter, respectively.

[0018] In an exemplary embodiment of the present disclosure, a microbial detection device comprises:

[0019] A flow cytometer.

[0020] The flow cytometer is connected to the water quality monitoring device and the PLC controller, respectively.

[0021] In an exemplary embodiment of the present disclosure, a smart water supply monitoring and control system for drinking water further comprises:

[0022] A sand filter.

[0023] The sand filter is connected to the PLC controller, and the PLC controller is further configured to control the sand filter to start working when it is detected that the water quality data exceeds a preset value.

[0024] In an exemplary embodiment of the present disclosure, a smart water supply monitoring and control system for drinking water further comprises:

[0025] An ultraviolet intensity sensor and a dose calculation unit.

[0026] The ultraviolet intensity sensor is connected to the dose calculation unit and the PLC controller, respectively.

[0027] In an exemplary embodiment of the present disclosure, a smart water supply monitoring and control system for drinking water further comprises:

[0028] A touch screen display and a fiber optic transceiver.

[0029] The touch screen display is connected with the PLC controller.

[0030] The PLC controller is connected with the external terminal through the optical fiber transceiver.

[0031] In an exemplary embodiment of the present disclosure, a smart water supply monitoring and control system for domestic drinking water further comprises:

[0032] The alarm device.

[0033] The alarm device is connected with the PLC controller.

[0034] The smart water supply monitoring and control system for domestic drinking water provided by the present disclosure has the following beneficial effects:

[0035] In the present disclosure, the water quality monitoring device can detect multiple water quality indicators in real time, and the microorganism detection device can accurately analyze the microorganism condition in water. The PLC controller is connected between the microorganism detection device and the water quality monitoring device. When the water quality data exceeds the preset value, the PLC controller quickly starts the microorganism detection device to deeply analyze the microorganism condition in water, so that the water supply monitoring is more flexible and can present the water quality condition in all directions. At the same time, the high power consumption problem caused by the continuous operation of the microorganism detection device is avoided, and resource waste is avoided.

[0036] In the present disclosure, the limitations of focusing on flow and pressure monitoring in the prior art are overcome by combining the propeller flowmeter with the differential pressure sensor to accurately measure the water flow speed and pressure change, providing detailed and accurate data support for the hydraulic analysis of the water supply system, so that timely measures can be taken to repair, reduce water resource waste and water supply failure, and reduce pipeline maintenance cost and the risk of water stop caused by failure.

[0037] The pipeline expander effectively responds to the expansion and deformation of the pipeline caused by temperature fluctuations, water flow pressure changes and surrounding environmental factors, avoids damage to the pipeline caused by excessive stress, prolongs the service life of the pipeline, further enhances the reliability and durability of the water supply system, and ensures that the entire domestic drinking water supply system can operate safely, stably and efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 is a structural schematic diagram of a smart water supply monitoring and control system for domestic drinking water provided by the present disclosure;

[0040] Figure 2 FIG. 8 is a structural schematic diagram of another life drinking water intelligent water supply monitoring control system provided by an embodiment of the present disclosure;

[0041] Figure 3 FIG. 9 is a structural schematic diagram of still another life drinking water intelligent water supply monitoring control system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In order to enable persons skilled in the art to better understand the present scheme, the technical solutions in the embodiments of the present scheme will be clearly described below in combination with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are part of the embodiments of the present scheme, rather than all the embodiments. Based on the embodiments in the present scheme, all other embodiments obtained by persons skilled in the art without creative labor should fall within the scope of protection of the present scheme.

[0043] The terms "include", and other any variants thereof in the specification and claims of the present scheme and the above-mentioned drawings, refer to "include but not limited to", and are intended to cover non-exclusive inclusion, and are not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0044] The implementation of the present disclosure will be described in detail below in combination with specific drawings:

[0045] Figure 1 FIG. 1 is a structural schematic diagram of a life drinking water intelligent water supply monitoring control system provided by an embodiment of the present disclosure. Referring to FIG. 1, Figure 1 The life drinking water intelligent water supply monitoring control system includes a water quality monitoring device, a PLC controller, a microorganism detection device, a pipeline expander, a propeller flowmeter and a differential pressure sensor.

[0046] The PLC controller is connected with the water quality monitoring device, the microorganism detection device, the pipeline expander, the propeller flowmeter and the differential pressure sensor respectively. The water quality monitoring device is configured to monitor water quality data. The PLC controller is configured to control the microorganism detection device to start working when it is monitored that the water quality data exceeds a preset value.

[0047] The propeller flowmeter is arranged at a straight pipe section of the water supply pipeline, and the differential pressure sensor is arranged at a reduced diameter, an expanded diameter, a valve and a branch position of the water supply pipeline.

[0048] In this embodiment, the water quality monitoring device is configured to monitor relevant indicators of water quality, including turbidity, residual chlorine content, ambient temperature, water temperature, and other key parameters, and transmit the data to the PLC controller. The microorganism detection device is configured to detect microorganisms in the water sample, determine their species, quantity, and other information, and transmit the data to the PLC controller. At the same time, the water quality monitoring device and the microorganism detection device work interactively through the PLC controller, and the PLC controller compares the received water quality data with the preset values. When the water quality characteristics monitored by the water quality monitoring device exceed the preset range, the PLC controller will control the microorganism detection device to start and begin detecting the microorganism information in the water.

[0049] The propeller flowmeter measures the water flow velocity in the straight pipe section of the water supply pipeline, and the differential pressure sensor monitors the pressure changes at key locations such as the reduced diameter, expanded diameter, valve, branch, etc., thereby calculating the flow rate and other hydraulic parameters. These data are transmitted to the PLC controller. If water quality problems or hydraulic abnormalities occur, the PLC controller can issue instructions to take appropriate measures, such as adjusting the pipeline expander or the valve in the pipeline to adapt to pressure changes, adjusting the water flow rate, ensuring the safe and stable operation of the water supply system, and ensuring the quality of residential water use.

[0050] In this embodiment, the water quality monitoring device can include various water quality monitoring sensors, such as turbidity sensors, temperature sensors, residual chlorine analyzers, etc. The water quality monitoring device is connected to the PLC controller through wireless communication, which follows the corresponding Wi-Fi or Bluetooth protocol standard to ensure the stability of data transmission. The water quality monitoring device can be placed at the water supply inlet of the water supply pipeline network, the intersection of the pipeline network, the branch of the pipeline network, the inlet of the secondary water supply facility, etc., to comprehensively monitor the changes in water quality. The data collected by each water quality monitoring device is converted into standard electrical signals by the signal conditioning circuit, and the data is transmitted to the PLC controller in the form of digital or analog signals. The PLC controller judges and processes according to the preset water quality standard value.

[0051] The PLC controller is connected to other devices through communication interfaces such as RS485 and Ethernet, receives data, and sends control instructions. The PLC controller can be installed in the control center of the water plant or the water supply management department, facilitating centralized management and operation.

[0052] The propeller flowmeter can include a propeller, a bearing, a rotational speed sensor, a signal conditioning circuit, and a housing. The propeller is mounted on the bearing. The rotational speed sensor uses a Hall element or a photoelectric sensor to detect the rotational speed of the propeller. The signal conditioning circuit converts the rotational speed signal into a standard electrical signal. The propeller flowmeter is connected to the PLC controller through short-range wireless communication technologies such as Bluetooth or ZigBee, and transmits flow rate data in real time. The rotational speed sensor converts the detected propeller rotational speed signal into an electrical signal, which is transmitted to the PLC controller after signal conditioning. The PLC controller performs hydraulic analysis and water supply scheduling based on the flow rate data. The propeller flowmeter can be installed in the straight pipe section of the water supply pipeline, where the water flow is stable and turbulence does not interfere with the measurement results. For example, in the straight pipe section near the pump station outlet, the initial flow rate can be measured; in the main straight pipe section of the pipe network, the flow rate distribution of the water flow is monitored; at the water inlet branch pipe in front of the community building, the water flow rate into each building is measured, providing data support for resident water pressure and water quantity control.

[0053] The differential pressure sensor can include a pressure-sensitive element such as a piezoresistive sensor or a capacitive sensor. The differential pressure sensor can be installed at locations such as the reduced diameter, the expanded diameter, the valve, and the branch of the water supply pipeline. At the reduced diameter, due to the continuity principle of fluid, the speed of the fluid increases and the pressure decreases when passing through the reduced diameter area. By measuring the pressure difference before and after the reduced diameter, the flow rate can be calculated; at the expanded diameter, the situation is the opposite, the speed decreases and the pressure rises. Similarly, the flow rate change can be analyzed by measuring the pressure difference; before and after the valve, the pressure change caused by the throttling effect of the valve can be measured to understand the opening degree of the valve and its impact on the water flow; at the branch location, by measuring the pressure difference between the main pipe and the branch pipe, the flow distribution of the branch pipe can be determined.

[0054] In this embodiment, the pipe expander can include a body, an expansion pipe, a sealing device, and a connecting flange. The expansion pipe is nested in the body and can freely expand and contract in the axial direction. The pipe expander is installed on the straight section of the long-distance water supply pipeline, such as near the pump station outlet, at the pipe network branch, and other locations. Due to changes in water flow pressure, temperature fluctuations, and surrounding environmental factors, the pipe is prone to expansion and contraction deformation.

[0055] For example, when the water supply pipeline expands due to temperature rise or contracts due to temperature drop, the expansion pipe elongates or shortens in the body accordingly to compensate for the thermal expansion and contraction of the pipeline. At the same time, when the pipeline is subjected to external forces such as foundation settlement and water pressure impact, the pipe expander can also deform itself to absorb these displacement amounts, avoiding damage to the pipeline due to excessive stress.

[0056] The pipeline expander is linked with the temperature sensor and the propeller flowmeter through the PLC controller. The PLC controller can control the pipeline expander to adjust the expansion state in advance according to the received temperature change, water flow speed and pressure change, and cooperate with the expansion of the pipeline. The pipeline expander is connected with the PLC controller, and can transmit the expansion state data of the pipeline expander to the PLC controller and receive the control instruction of the PLC controller, so as to realize the pipeline expansion control and ensure the safe and stable operation of the water supply pipeline system.

[0057] For example, in the drinking water supply system of a certain community, the water consumption increases greatly during the summer peak period, the water flow speed in the pipe network increases, and the pressure rises. The propeller flowmeter accurately senses the change of the water flow speed and the pressure, and transmits the data to the PLC controller in real time. The PLC controller transmits a control signal to the pipeline expander to control the pipeline expander to quickly adjust the expansion amount, so as to avoid loosening and water leakage of the pipeline connection due to excessive pressure, and ensure normal and stable water supply for residents in the community during the water consumption peak period.

[0058] As shown in Figure 3 In this embodiment, the microorganism detection device comprises:

[0059] The flow cytometer.

[0060] The flow cytometer is connected with the water quality monitoring device and the PLC controller.

[0061] In this embodiment, the flow cytometer can be installed at the water inlet and outlet of the secondary water supply facility, the main line branch point of the pipe network, the junction point of water supply in different areas, and the position connected with the secondary water supply facility.

[0062] In this embodiment, the water quality monitoring device can monitor the water quality data in real time and accurately, and can detect the subtle change of the water quality in time. When the data exceeds the preset value, the microorganism detection device can be started quickly, the water microorganism pollution condition can be accurately judged, the microorganism safety of the drinking water can be ensured, and the health risk of residents can be reduced. The layout of the propeller flowmeter and the differential pressure sensor at the key position of the pipeline can accurately measure the change of the water flow speed and the pressure, provide a reliable basis for the water power analysis, help to find the pipeline blockage, water leakage and other hidden troubles in advance, realize efficient water supply scheduling, and improve the water supply efficiency and stability.

[0063] The pipeline expander can effectively cope with the expansion and deformation of the pipeline due to temperature, pressure and other factors, reduce the possibility of pipeline damage, prolong the service life of the pipeline, and ensure the continuous and reliable operation of the water supply system.

[0064] In one embodiment of the present disclosure, a smart drinking water supply monitoring and control system further comprises:

[0065] The first flowmeter is arranged at the water inlet of the water supply pipeline.

[0066] a second flow meter, the second flow meter is multiple, the multiple second flow meters are respectively arranged at the positions of the multiple first water switches, and the first water switch is a water switch at a level above an end of the water supply pipeline.

[0067] a pressure switch arranged at a water inlet of the water supply pipeline, the pressure switch being configured to disconnect the power supply of the water supply pump when the pressure at the water inlet is greater than a preset pressure value.

[0068] The first flow meter, the multiple second flow meters and the pressure switch are connected with the PLC controller.

[0069] The PLC controller is further configured to calculate the water amount in the water supply pipeline based on the output data of the first flow meter and the second flow meters, and disconnect the power supply of the water supply pump when the water amount in the water supply pipeline is greater than a water amount threshold.

[0070] In the embodiment, the pressure switch monitors the pressure value at the water inlet in real time, and disconnects the power supply of the water supply pump as soon as it detects that the pressure at the water inlet is greater than a preset pressure value, which serves as a rapid protection mechanism and can quickly respond to sudden pressure surges caused by abnormal operation of the water pump, pipe network blockage and the like, thereby avoiding damage to the water supply pipeline and other equipment and ensuring that the entire water supply system operates within a safe pressure range.

[0071] However, the pressure switch is easily damaged or fails during long-term use. Therefore, the first flow meter and the multiple second flow meters can be provided, the first flow meter is located at the water inlet of the water supply pipeline and can accurately measure the total water amount entering the entire water supply network, and the multiple second flow meters are distributed at the positions of the water switches at a level above the end of the water supply pipeline and can monitor the water consumption at each region or each user branch. The PLC controller continuously receives the data of the first flow meter and the multiple second flow meters, and the water amount in the water supply pipeline at the moment can be obtained by calculating the total water amount entering the entire water supply network and the water consumption at each region or each user branch.

[0072] By comparing the water amount in the water supply pipeline with the preset water amount threshold, it can be determined whether the water pressure in the water supply pipeline is normal at the moment. When the calculated water amount in the water supply pipeline is greater than the preset water amount threshold, the PLC controller issues an instruction to disconnect the power supply of the water supply pump, thereby preventing problems such as excessively high pipeline pressure, water leakage and even pipe explosion caused by excessive water supply, and ensuring the safe and stable operation of the water supply system.

[0073] The pressure switch and the water amount control based on the flow meter work in cooperation, which can further improve the reliability and stability of the water supply system.

[0074] In the present embodiment, the first flow meter can be selected as an electromagnetic flow meter or an ultrasonic flow meter with high precision, which is installed in the straight pipe section of the water inlet to ensure accurate measurement; the second flow meter is selected according to the pipe diameter and flow range of each branch pipe, such as a turbine flow meter, and is installed in front of the corresponding first water switch. The PLC controller is connected with the first flow meter, the plurality of second flow meters, the pressure switch and the control circuit of the water supply pump to ensure reliable data transmission and control instruction execution.

[0075] The present embodiment can accurately calculate the water quantity in the water supply pipeline through the setting of the first flow meter and the plurality of second flow meters, and control the water supply pump in combination with the preset threshold value, thereby effectively preventing problems such as water leakage and pipe explosion caused by excessively high pipeline pressure, and ensuring stable and safe water supply. The pressure switch as a rapid protection mechanism cooperates with the flow meter to further improve the reliability, reduce the damage risk of the pipeline and equipment caused by abnormal pressure, and ensure the continuity and stability of the domestic water supply.

[0076] As shown in Figure 2 In one embodiment of the present disclosure, the water quality monitoring device comprises:

[0077] a turbidity meter, a temperature sensor and a residual chlorine analyzer.

[0078] The turbidity meter, the temperature sensor and the residual chlorine analyzer are connected with the PLC controller.

[0079] The temperature sensor is connected with the turbidity meter, the residual chlorine analyzer, the microbial detection device and the propeller flow meter, respectively.

[0080] In the present embodiment, the turbidity meter can include a light-emitting diode, a light detector and the like. The light-emitting diode emits light to penetrate the water sample, and the light detector receives scattered or transmitted light to determine the turbidity by detecting the change in light intensity. The turbidity meter is installed at the outlet of each treatment unit of the water plant, the key nodes of the water supply network and the inlet of the secondary water supply facility, etc., to ensure that the turbidity change of the water quality can be monitored in time.

[0081] The temperature sensor can be installed at the total water inlet of the community, the water inlet branch pipe of each building, the water inlet branch pipe of each building, the inlet and outlet pipes near the secondary water supply facility, etc., to accurately measure the change of water temperature.

[0082] The residual chlorine analyzer can include a working electrode, a reference electrode and an electrolyte. The working electrode reacts with the residual chlorine in the water to generate an electric current, and the reference electrode provides a stable potential. The residual chlorine analyzer can be installed at the key positions where the residual chlorine may change after the disinfection process of the water plant, such as the inlet of the community water supply, to monitor the residual chlorine content in real time.

[0083] In the present embodiment, the temperature is considered to affect various properties of water. For example, the change of water temperature affects the distribution of suspended particles, thereby affecting turbidity. At the same time, the temperature changes the consumption rate of residual chlorine, and the PLC controller can control the working state and working parameters of the residual chlorine analyzer according to the temperature data collected by the temperature sensor, so as to more accurately control disinfection. Temperature is an important factor for the growth and reproduction of microorganisms. When the temperature is in the range suitable for the generation of microorganisms, the PLC controller can control the start of the microorganism detection device to detect microorganisms.

[0084] For example, in the drinking water supply system of a certain community, the turbidity meter is installed at the inlet of the secondary water supply facility of the community. When the turbidity is detected to suddenly increase, the PLC controller receives the data and immediately issues an alarm and suspends water supply. After investigation, it is found that the residual impurities after cleaning the secondary water supply tank cause the turbidity to suddenly increase, and normal water supply is restored after timely cleaning. The residual chlorine analyzer detects a decrease in the content of residual chlorine at the inlet of the community water supply, and the PLC controller controls the water plant to adjust the amount of disinfectant added to ensure the microbial safety of the water supply and ensure the safety and reliability of the water used by residents.

[0085] The present embodiment can timely detect abnormal changes in turbidity, temperature, residual chlorine and other indicators through comprehensive water quality monitoring, quickly take countermeasures, and effectively ensure the safety and stability of the water used by residents. The connection of each device with the PLC controller realizes automatic and intelligent control, reduces the workload of manual inspection and operation, improves the management efficiency and response speed of the water supply system, and provides continuous, high-quality and safe drinking water for residents.

[0086] As shown in Figure 2 In one embodiment of the present disclosure, a smart drinking water supply monitoring and control system further comprises:

[0087] The sand filter.

[0088] The sand filter is connected with the PLC controller. The PLC controller is further configured to control the sand filter to start working when it is detected that the water quality data exceeds the preset value.

[0089] In the embodiment, the sand filter can include a tank body, a sand filter layer, water inlet and outlet pipes, a backwashing device, etc. The tank body is made of pressure-resistant and corrosion-resistant material, and is internally filled with sand particles of different particle sizes as filter medium. The water inlet and outlet pipes are respectively located at the upper and lower parts of the tank body, and the backwashing device is used for periodic cleaning of the sand filter layer. The sand filter can be installed at the water inlet of the secondary water supply facility of a community, for further removing impurities such as suspended particles and colloids in water. When the sand filter has been operated for a period of time, the sand filter layer traps too many impurities, resulting in increased resistance. At this time, the PLC controller controls the start of the backwashing device, and uses the reverse water flow to flush away the impurities in the sand filter layer, restores the filtering performance of the sand filter, and ensures the stability and safety of the water supply quality. The PLC controller can arrange the backwashing period according to the water quality data collected by the water quality monitoring device, to avoid waste of water resources.

[0090] For example, in the water supply of a certain community, the water quality monitoring device monitors that the turbidity of the water flow is greater than the preset value. At this time, the PLC controller receives the signal and sends a start instruction to the sand filter. The sand filter starts to filter the water entering the secondary water supply facility of the community, removes suspended particles and colloidal impurities in the water, and improves the water quality. As the sand filter continues to operate, the impurities in the sand filter layer increase and the resistance increases. The PLC controller starts the backwashing device to flush the sand filter layer with reverse water flow to restore its filtering performance. At the same time, the backwashing is reasonably arranged according to the water meter data to avoid waste of water resources and ensure stable and high-quality water supply for community residents.

[0091] In the embodiment, the sand filter is linked with the water quality monitoring device through the PLC controller, and starts filtering flexibly according to the water quality data, effectively removes suspended particles and colloidal impurities, ensures stable and high-quality secondary water supply, and improves the water quality of residents. Through the PLC controller, the backwashing is reasonably arranged to avoid waste of water resources, optimize the operation efficiency of the water supply system while ensuring the water quality, reduce the maintenance cost, and enhance the reliability and sustainability of the water supply.

[0092] As shown in Figure 3 In one embodiment of the present disclosure, a smart water supply monitoring and control system for domestic and drinking water further comprises:

[0093] An ultraviolet intensity sensor and a dose calculation unit.

[0094] The ultraviolet intensity sensor is connected with the dose calculation unit and the PLC controller respectively.

[0095] In this embodiment, the ultraviolet intensity sensor can be installed inside the ultraviolet disinfection device near the lamp tube and the position where the water flow passes. The ultraviolet sensitive element in the ultraviolet intensity sensor converts the received ultraviolet intensity into an electrical signal, which is transmitted to the dose calculation unit and the PLC controller after signal amplification and conditioning. The dose calculation unit calculates the ultraviolet dose according to the real-time data transmitted by the ultraviolet intensity sensor, combined with the preset water flow speed, water ultraviolet absorption coefficient and other parameters. When the calculated dose reaches the pre-set disinfection requirement, it is determined that the disinfection effect meets the standard. If the dose is insufficient, the relevant information will be fed back to the PLC controller, and the PLC controller can take measures such as adjusting the power of the ultraviolet lamp tube and the water flow speed to ensure the effectiveness of the disinfection process and the safety of drinking water microorganisms.

[0096] This embodiment can monitor the disinfection effect in real time and ensure the safety of drinking water microorganisms by accurately monitoring the ultraviolet intensity and calculating the dose. When the dose is insufficient, it is fed back to the PLC controller in time for adjustment, avoiding health risks caused by incomplete disinfection. Not only does it improve the health quality of water supply, but also enhances the reliability and stability of the water supply system, ensuring that residents can continuously obtain safe and standard drinking water.

[0097] As shown in Figure 3 , in one embodiment of the present disclosure, a smart water supply monitoring and control system for drinking water further comprises:

[0098] A touch screen display and a fiber optic transceiver.

[0099] The touch screen display is connected to the PLC controller.

[0100] The PLC controller is connected to an external terminal through the fiber optic transceiver.

[0101] In this embodiment, the touch screen display can include a display screen, a touch sensing layer and a controller. The display screen is used to present various data and operation interfaces, the touch sensing layer can sense the touch operation of the user and convert it into an electrical signal, and the controller can process the touch signal and communicate with the PLC controller. The touch screen display is installed in the monitoring room of the water plant, the dispatching center of the water supply management department and other indoor places, which is convenient for the operator to check and operate at any time.

[0102] The touch screen display establishes a communication connection with the PLC controller, receives the water quality, water power and other data information sent by the PLC controller, and displays them intuitively on the screen. The operator can send instructions to the PLC controller through icons, buttons and other elements on the touch screen, realize remote monitoring and control of the water supply system, such as adjusting the flow of the electromagnetic flow controller, checking the detection results of the microbial detection equipment, etc.

[0103] The optical fiber transceiver can be installed near the PLC controller and at a location requiring connection with an external terminal, such as in a cabinet of a control center and in a computer room of a remote office, to achieve high-speed and long-distance transmission of data through optical fiber connection. The data signal sent by the PLC controller is converted from electric to optical by the optical fiber transceiver, transmitted to the optical fiber transceiver of the external terminal through the optical fiber, and then converted from optical to electric to restore the electric signal for the external terminal to receive and process. The data sent by the external terminal can also be transmitted to the PLC controller in the same way, so as to realize the interconnection and intercommunication of the water supply monitoring control system with the city water supply management platform, remote office computers and other external networks, facilitate data sharing and remote management, and improve the informatization and intelligentization level of the water supply system.

[0104] The touch screen display of the embodiment facilitates the operator to intuitively understand the water supply data and remotely control the water supply system, thereby improving the convenience and timeliness of management. The optical fiber transceiver realizes high-speed and long-distance transmission of data, enables the water supply monitoring control system to interconnect and intercommunicate with external networks, helps unified scheduling and management of water supply, enables departments to remotely share data, timely discovers and solves problems, and improves the informatization, intelligentization level and overall operation efficiency of the water supply system.

[0105] As shown in FIG. 1, Figure 3 In one embodiment of the present disclosure, a smart water supply monitoring control system for drinking water further comprises:

[0106] An alarm device.

[0107] The alarm device is connected with the PLC controller.

[0108] In the embodiment, the alarm device is connected with the PLC controller, and the PLC controller continuously receives data from the water quality monitoring device, the microorganism detection device, the propeller flowmeter, the differential pressure sensor and other components. When the data exceeds the pre-set normal range, for example, the water turbidity exceeds the standard, the number of microorganisms is too large, the water flow rate is abnormal or the pressure suddenly changes, the PLC controller will immediately send a trigger signal to the alarm device. After receiving the signal, the alarm device starts the alarm according to the pre-set alarm mode, such as issuing an audible and visual alarm, emitting a high-decibel warning sound through a loudspeaker, and lighting a warning light to attract the attention of the operator, so as to timely take corresponding measures to solve the problems of the water supply system and ensure the safety of water supply.

[0109] For example, in the water supply system of a certain community, when the water quality monitoring device detects that the residual chlorine content in the water is lower than the safety standard, the data is transmitted to the PLC controller, the PLC controller determines the abnormality and sends a signal to the alarm device. The alarm device immediately sends a loud and bright sound and light alarm to the community property management office. The property personnel quickly learn of the situation, check the chlorination equipment, investigate the cause of the low residual chlorine content, and promptly restore normal chlorination operations, avoiding the possible growth of microorganisms due to insufficient residual chlorine and ensuring the microbial safety of the residents' water.

[0110] The alarm device of the present embodiment can respond to various types of abnormal data in the water supply system in real time, quickly attract the attention of the staff through sound and light alarms, and ensure that the problem is discovered in a timely manner.

[0111] The above embodiments are only used to illustrate the technical solutions of the present disclosure, and not to limit them. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A smart water supply monitoring and control system for domestic drinking water, characterized in that, The utility model relates to a water quality monitoring device, a PLC controller, a microorganism detection device, a pipeline expander, a propeller flowmeter and a differential pressure sensor. The PLC controller is connected with the water quality monitoring device, the microorganism detection device, the pipeline expander, the propeller flowmeter and the differential pressure sensor respectively; the water quality monitoring device is configured to monitor water quality data; the PLC controller is configured to control the microorganism detection device to start working when the water quality data monitored exceeds a preset value. The propeller flowmeter is arranged at a straight pipe section of a water supply pipeline, and the differential pressure sensor is arranged at a position of diameter reduction, diameter expansion, a valve or a branch of the water supply pipeline. Further comprising:

2. The intelligent water supply monitoring and control system for domestic drinking water of claim 1, wherein a first flowmeter arranged at a water inlet of the water supply pipeline; a plurality of second flowmeters, which are arranged at a plurality of first water switch positions respectively, the first water switch being a previous stage water switch at an end of the water supply pipeline; a pressure switch arranged at the water inlet of the water supply pipeline, the pressure switch being configured to disconnect the power supply of the water supply pump when the pressure at the water inlet is greater than a preset pressure value; the first flowmeter, the plurality of second flowmeters and the pressure switch are connected with the PLC controller; the PLC controller is further configured to calculate the water quantity in the water supply pipeline based on the output data of the first flowmeter and the second flowmeters, and disconnect the power supply of the water supply pump when the water quantity in the water supply pipeline is greater than a water quantity threshold. The water quality monitoring device comprises:

3. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein a turbidity meter, a temperature sensor and a residual chlorine analyzer; the turbidity meter, the temperature sensor and the residual chlorine analyzer are connected with the PLC controller; the temperature sensor is connected with the turbidity meter, the residual chlorine analyzer, the microorganism detection device and the propeller flowmeter respectively. The microorganism detection device comprises:

4. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein a flow cytometer; the flow cytometer is connected with the water quality monitoring device and the PLC controller respectively. Further comprising:

5. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein a sand filter; the sand filter is connected with the PLC controller; the PLC controller is further configured to control the sand filter to start working when the water quality data monitored exceeds a preset value. Further comprising:

6. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein an ultraviolet intensity sensor and a dose calculation unit; the ultraviolet intensity sensor is connected with the dose calculation unit and the PLC controller respectively. Further comprising:

7. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein a touch screen display and a fiber optic transceiver; the touch screen display is connected with the PLC controller; the PLC controller is connected with an external terminal through the fiber optic transceiver. Further comprising:

8. The smart water supply monitoring and control system for domestic drinking water of claim 1, wherein an alarm device; the alarm device is connected with the PLC controller. ​

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