Secondary water supply side water quality on-line monitoring system

Abstract

The invention discloses a secondary water supply side water quality on-line monitoring system, and relates to the technical field of water quality monitoring, the system comprises a water quality sensor unit, a water sample collection device and a collection control module; the acquisition control module and the water quality sensor unit are both connected with the water sample acquisition device; the collection control module is used for collecting and storing water samples at a plurality of preset water levels; the collection control module is used for controlling the switching frequency corresponding to the preset water level when the water sample collection device collects the water sample; the water quality sensor unit is used for acquiring water quality parameters of the water sample. By arranging the water quality sensor unit, the water sample collection device and the collection control module, the water quality of the secondary water supply side can be monitored in real time.

Description

Technical Field

[0001] The present application relates to the technical field of water quality monitoring, and in particular to an online water quality monitoring system for a secondary water supply side. Background Art

[0002] Water is an indispensable resource for humans and other living things. It plays an extremely important role in various human production activities and is an organic part of the ecological environment. It cannot be replaced by any other resource. Water pollution is also one of the important factors restricting economic development. Rapid and accurate identification of water pollution is of great significance to water quality monitoring, water resource protection, disaster prevention and mitigation, etc. The online water quality monitoring system is a comprehensive real-time monitoring system composed of online automatic analysis instruments, real-time acquisition sensors, autonomous sampling calculation technology, automatic control technology, computer software and communication networks. It can monitor various parameter information of the monitored water quality. Traditional water quality monitoring systems usually rely on manual sampling and laboratory analysis, which is not only time-consuming and labor-intensive, but also cannot achieve real-time monitoring. With the development of technology, some online monitoring systems have begun to appear, but most systems rely on wireless communication technology, which may be affected by signal interference or transmission delay in some environments.

[0003] Secondary water supply refers to the form in which units or individuals store and pressurize urban public water supply or self-built facilities water supply, and then supply it to users or for their own use through pipelines. Secondary water supply is mainly established to compensate for the lack of pressure in the water supply pipeline of the urban water supply system and to ensure water supply for people living in high-rise buildings. With the improvement and acceleration of the pace of life, people often need to disinfect and sterilize the end of the secondary water supply to achieve direct drinking of the secondary water supply. However, the existing sterilization devices all directly irradiate the water with ultraviolet rays. At this time, the water at the bottom cannot be irradiated by ultraviolet rays, which may lead to incomplete water sterilization. Therefore, there is an urgent need for an online water quality monitoring system to monitor the water quality on the secondary water supply side in the heating link. Summary of the invention

[0004] The purpose of this application is to provide an online water quality monitoring system for the secondary water supply side, which can monitor the water quality on the secondary water supply side in real time.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] The present application provides an online water quality monitoring system for a secondary water supply side, comprising:

[0007] Water quality sensor unit, water sample collection device and collection control module;

[0008] The collection control module and the water quality sensor unit are both connected to the water sample collection device;

[0009] The collection control module is used to collect and store water samples at multiple preset water levels;

[0010] The collection control module is used to control the switching frequency corresponding to the preset water level when the water sample collection device collects water samples;

[0011] The water quality sensor unit is used to obtain water quality parameters of a water sample.

[0012] Optionally, the water quality parameters include physical indicators, chemical indicators and biological indicators;

[0013] The physical indicators include: water temperature, turbidity, color and odor;

[0014] The chemical indicators include: pH value, dissolved oxygen, chemical oxygen demand, ammonia nitrogen content and heavy metal content; the heavy metals include lead, mercury and cadmium;

[0015] The biological indicators include: total bacteria count, coliform group and algae biomass.

[0016] Optionally, the water sample collection device comprises:

[0017] A water sample storage device, a main pipeline, multiple water sample collection branches and multiple switch components;

[0018] The water inlets of different water sample collection branches are arranged at different preset water levels on the secondary water supply side; the water outlets of the multiple water sample collection branches are connected to the water inlet of the main pipeline; the water outlet of the main pipeline is connected to the water inlet of the water sample storage device; the switch assembly corresponds to the water sample collection branch one by one;

[0019] A plurality of the switch components are all connected to the acquisition control module.

[0020] Optionally, the water sample storage container is a sampling bottle or a flow container.

[0021] Optionally, the switch assembly comprises:

[0022] Pressure reducing valves and solenoid valves;

[0023] The pressure reducing valve and the solenoid valve are both connected to the acquisition control module.

[0024] Optionally, the water sample collection device further includes a flow regulator;

[0025] The flow regulator is arranged on the main pipeline;

[0026] The flow regulator is connected to the acquisition control module.

[0027] Optionally, the secondary water supply side water quality online monitoring system further includes: a human-machine operation module;

[0028] The human-machine operation module is connected to the water quality sensor unit and the acquisition control module respectively; the human-machine operation module is also connected to the remote control terminal;

[0029] The human-machine operation module is used to obtain a mode selection instruction; the mode selection instruction includes an automatic sampling mode and a manual sampling mode; when the acquisition control module receives the manual sampling mode, it controls the switch component on the water sample collection branch corresponding to the target preset water level; when the acquisition control module receives the automatic sampling mode, it turns on the switch components on different water sample collection branches according to the preset frequency; at most one switch component is started at any time;

[0030] The human-machine operation module is used to collect statistics on water quality parameters of water samples at different preset water levels, generate multiple curves, and display multiple curves; the human-machine operation module is also used to transmit the water quality parameters of water samples at different preset water levels and multiple curves to the remote control terminal.

[0031] Optionally, the human-machine operation module includes:

[0032] Mode selection instruction acquisition unit, control unit, display unit and transmission unit;

[0033] The control unit is respectively connected to the mode selection instruction acquisition unit, the display unit, the transmission unit, the water quality sensor unit and the acquisition control module;

[0034] The mode selection instruction acquisition unit is used to acquire a mode selection instruction;

[0035] The control unit is used to collect statistics on water quality parameters of water samples at different preset water levels to generate multiple curves;

[0036] The display unit is used to display water quality parameters of water samples at different preset water levels, as well as multiple curves;

[0037] The transmission unit is used to transmit water quality parameters of water samples at different preset water levels and multiple curves to a remote control terminal.

[0038] Optionally, the secondary water supply side water quality online monitoring system further includes: a power module;

[0039] The power supply module comprises a leakage protector, a power supply fuse and a switching power supply.

[0040] Optionally, the secondary water supply side water quality online monitoring system further comprises: a hollow housing;

[0041] The water quality sensor unit, the collection control module, the power module, the water sample storage device of the water sample collection device, the control unit of the human-machine operation module and the transmission unit of the human-machine operation module are all arranged in the hollow shell;

[0042] The mode selection instruction acquisition unit of the human-machine operation module and the display unit of the human-machine operation module are both arranged on the hollow shell;

[0043] The hollow shell is provided with a first opening and a second opening;

[0044] The main pipeline passes through the first opening and is connected to the water inlet of the water sample storage container;

[0045] The water outlet pipe passes through the second opening and is connected to the water outlet of the water sample storage container.

[0046] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0047] The present application provides an online water quality monitoring system for the secondary water supply side, which uses a variety of sensors and can continuously and uninterruptedly monitor various physical, chemical and biological indicators in the water body, such as pH value, dissolved oxygen, turbidity, conductivity, etc. Compared with traditional manual sampling and detection, wired monitoring can obtain data in real time, greatly improving the timeliness and accuracy of monitoring. In this way, it is possible to quickly obtain information on water quality changes, take timely measures, and effectively prevent the occurrence of water pollution accidents. Modern wired detection systems are usually equipped with automatic data acquisition and processing functions. The data obtained by the sensor is analyzed and processed by the central control unit. This process reduces the necessity of manual intervention and reduces human errors. In addition, the system can upload monitoring data to the cloud in real time to facilitate big data analysis. This increase in the degree of automation has further improved the efficiency of water quality monitoring and also liberated a large amount of human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 This is a structural schematic diagram of an online water quality monitoring system for the secondary water supply side in one embodiment of the present application;

[0050] Figure 2 This is a workflow diagram of an online water quality monitoring system for the secondary water supply side in one embodiment of the present application. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0053] As an important monitoring method, wired detection in the water quality monitoring system has the characteristics of high data reliability and stable transmission, and plays an indispensable role in modern environmental protection and water resources management. By real-time monitoring of water quality changes, water pollution can be identified and improved in time, providing a scientific basis for ecological environmental protection and sustainable use of water resources. With the development of science and technology, wired water quality monitoring systems will continue to improve, integrating more intelligent technologies to provide greater support for water quality management. Wired detection refers to a method of real-time monitoring and data transmission of various water quality indicators in water bodies through wired transmission technology. Compared with wireless detection, wired detection usually involves the use of cables and sensors to obtain water quality data, thereby ensuring the accuracy and reliability of the data. In an exemplary embodiment, a secondary water supply side water quality online monitoring system is provided, which transmits data to a remote location through a DTU to improve data reliability and transmission stability.

[0054] In an exemplary embodiment, Figure 1 As shown, a secondary water supply side water quality online monitoring system is provided, including: a water quality sensor unit, a water sample collection device and a collection control module; the collection control module and the water quality sensor unit are both connected to the water sample collection device; the collection control module is used to collect and store water samples at multiple preset water levels; the collection control module is used to control the switching frequency corresponding to the preset water level when the water sample collection device collects water samples; the water quality sensor unit is used to obtain the water quality parameters of the water sample. Water quality parameters include physical indicators, chemical indicators and biological indicators; physical indicators include: water temperature, turbidity, color and odor; chemical indicators include: pH value, dissolved oxygen, chemical oxygen demand, ammonia nitrogen content and heavy metal content; heavy metals include lead, mercury and cadmium; biological indicators include: total bacteria, coliform group and algae biomass. The water quality sensor unit includes a device for detecting water quality data of multiple parameters such as pH value, dissolved oxygen, turbidity, conductivity and hardness of water quality. The water quality sensor uses a millisecond detection speed to sample the data in real time accordingly, and the type of water quality sensor can be increased or decreased according to actual conditions;

[0055] This application collects data on-site in real time. The detector is an online real-time detection device. The device extracts water quality data once an hour by default. The specific start time of extraction is set by the user. When the time reaches the user-specified time, the collector controls the relay to open the solenoid valves in different areas in turn. Each area closes automatically according to the preset time. The whole process does not require human intervention. The collector detects various types of water quality data in different areas in real time, and performs real-time classification and cleaning, records and stores data locally. At the same time, when there is a need for remote collection, the data is transmitted to the remote through DTU.

[0056] The water sample collection device includes: a water sample storage device, a main pipeline, multiple water sample collection branches and multiple switch components; the water inlets of different water sample collection branches are set at different preset water levels on the secondary water supply side; the water outlets of the multiple water sample collection branches are connected to the water inlet of the main pipeline; the water outlet of the main pipeline is connected to the water inlet of the water sample storage device; the switch components correspond to the water sample collection branches one by one; and multiple switch components are connected to the collection control module. The water sample storage device is a sampling bottle or a flow meter. The switch component includes: a pressure reducing valve and a solenoid valve; the pressure reducing valve and the solenoid valve are connected to the collection control module. The water sample collection device also includes a flow regulator; the flow regulator is set on the main pipeline; the flow regulator is connected to the collection control module. The water quality collection device realizes the collection and storage of the collected water samples, and the water quality collection device includes a flow regulator, a pressure reducing valve, a solenoid valve, a sampling bottle, a flow meter and special pipe fittings. The water quality sensor is connected to the sampling bottle or flow meter. After the sampled water passes through the solenoid valve and the pressure reducing valve, it enters the sampling bottle or flow meter for temporary storage at a reasonable pressure to prepare the water sample for the detection of relevant parameters. The acquisition control module is the main logic unit of the entire system. It regulates the valve, acquisition frequency and acquisition method according to the user's settings.

[0057] In addition, the online water quality monitoring system on the secondary water supply side also includes: a human-machine operation module; the human-machine operation module is connected to the water quality sensor unit and the acquisition control module respectively; the human-machine operation module is also connected to the remote control end; the human-machine operation module is used to obtain mode selection instructions; the mode selection instructions include automatic sampling mode and manual sampling mode; when the acquisition control module receives the manual sampling mode, it controls the switch component on the water sample collection branch corresponding to the target preset water level; when the acquisition control module receives the automatic sampling mode, it turns on the switch components on different water sample collection branches according to the preset frequency; at most one switch component is started at any time; the human-machine operation module is used to count the water quality parameters of water samples at different preset water levels, generate multiple curves, and display multiple curves; the human-machine operation module is also used to transmit the water quality parameters of water samples at different preset water levels, as well as multiple curves to the remote control end. The automatic control module can open and close the solenoid valves of different units at a fixed time. When the valve is opened, the water sample of the target unit automatically enters the corresponding collection device. At this time, the relevant parameters of the water sample of the corresponding unit are collected and analyzed in real time. Interference and abnormal data will be filtered here, and the filtered data will be recorded and uploaded in real time. The human-machine operation unit and the power module include the user operation interface and the system power module. The human-machine operation unit provides users with data display and control entrances. The control setting is mainly convenient for operation. The data display part includes real-time data, parameter curves, sub-unit data and historical data. At the same time, data is uploaded remotely in real time according to the actual requirements of the user.

[0058] The human-machine operation module includes: a mode selection instruction acquisition unit, a control unit, a display unit and a transmission unit; the control unit is respectively connected to the mode selection instruction acquisition unit, the display unit, the transmission unit, the water quality sensor unit and the acquisition control module; the mode selection instruction acquisition unit is used to acquire the mode selection instruction; the control unit is used to count the water quality parameters of water samples at different preset water levels and generate multiple curves; the display unit is used to display the water quality parameters of water samples at different preset water levels, as well as multiple curves; the transmission unit is used to transmit the water quality parameters of water samples at different preset water levels, as well as multiple curves to the remote control end.

[0059] The water quality online monitoring system on the secondary water supply side also includes: a power module; the power module includes a leakage protector, a power fuse and a switching power supply. The water quality online monitoring system is powered by the mains, and through the switching power conversion, it provides DC power supply for the entire system.

[0060] In addition, the online water quality monitoring system on the secondary water supply side also includes: a hollow shell; a water quality sensor unit, an acquisition control module, a power supply module, a water sample storage device of a water sample collection device, a control unit of a human-machine operation module and a transmission unit of the human-machine operation module are all arranged in the hollow shell; a mode selection instruction acquisition unit of the human-machine operation module and a display unit of the human-machine operation module are both arranged on the hollow shell; a first opening and a second opening are arranged on the hollow shell; the main pipeline passes through the first opening and is connected to the water inlet of the water sample storage device; and the water outlet pipeline passes through the second opening and is connected to the water outlet of the water sample storage device.

[0061] The system can realize real-time and accurate monitoring of water quality, and ensure the stability and reliability of data transmission through wired communication technology. The online water quality monitoring system is a comprehensive real-time monitoring system composed of online automatic analysis instruments, real-time acquisition sensors, autonomous sampling calculation technology, automatic control technology, computer software and communication networks. It can monitor various parameter information of the water quality being tested. The online water quality monitoring system is used to monitor the water quality on the secondary water supply side to ensure water supply safety, improve water quality management level and protect public health.

[0062] The specific process for monitoring water quality on the secondary water supply side is as follows: Figure 2As shown, first of all, the purpose and goal of monitoring need to be clarified. This includes: monitoring whether the water source meets national or local water quality standards, assessing the degree and source of water pollution, monitoring the health of the water ecosystem, warning of water quality changes, and taking timely measures. According to the monitoring objectives, select appropriate monitoring points. After selecting the monitoring points, it is necessary to determine the monitored water quality indicators. In this application, since the monitoring object is the water quality on the secondary water supply side, the main monitored water quality indicators are pH value, dissolved oxygen, turbidity, conductivity and hardness. In this application, it is first necessary to deploy the water quality online monitoring system at the heat exchange station of Tianjin Thermal Power Co., Ltd. to ensure that each monitoring point is installed with a corresponding sensor unit. Install a water quality sensor unit at each monitoring point, including sensors for parameters such as pH value, dissolved oxygen, turbidity, conductivity and hardness, and configure a water quality collection device, including a flow regulator, a pressure reducing valve, a solenoid valve, a sampling bottle, a circulation device and special pipe fittings, etc., to realize the collection and storage of water samples. According to the user settings, the valve, collection frequency and collection method are adjusted by the collection control module to achieve automatic control. Configure the user interface, including real-time data display, parameter curves, sub-unit data and historical data, as well as the power module to ensure stable power supply of the system. The system extracts water quality data once an hour by default, and users can set the specific start time of extraction. After the specified time is reached, the collector opens the solenoid valves in different areas in turn through the control relay to automatically collect water samples. The collected water samples are detected in real time by sensors, and the system classifies, cleans, and records and stores the detected data in real time. The data is first stored locally, and at the same time, according to the remote collection requirements, the data is transmitted to the remote control system through the DTU. Users view and manage data through the touch screen human-machine interface, including monitoring data, unit water quality, water quality curves, historical data and parameter settings, regularly maintain the system, and optimize system functions based on feedback from operating effects to meet higher standards. According to actual needs, upgrade and expand the system, including adding or reducing sensor types, and optimizing the user interface and data processing algorithms. Figure 1This is a schematic diagram of the structure of the water quality detector for this application. The water quality detector mainly uses the electrode method to detect the water quality on the secondary water supply side in the heating link. The main components include water quality sensors, water quality collection pipes, touch screens, logic control equipment, relays, switching power supplies, flow regulators, pressure reducing valves, solenoid valves, etc. The following parts are displayed on the human-machine interface of the water quality monitoring touch screen: monitoring data, including monitoring data, unit water quality, water quality curves, historical data and parameter settings, which comprehensively display and manage water quality information; unit water quality, real-time display of solubility, turbidity, pH value, etc. of each sampling point, dynamic update of regional valve status, to ensure data timeliness; water quality curve, water quality curve displays the trend of parameters such as conductivity and salinity, helps analyze water quality dynamics, and assists in decision-making; historical data, data is stored every half hour, including conductivity, salinity, pH value, etc., to facilitate tracing of historical status and comparative analysis; parameter settings, support time synchronization and manual automatic sampling switching, one-key setting of system time, and flexible adjustment of sampling mode.

[0063] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the system and its core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An online water quality monitoring system for the secondary water supply side, characterized in that: include: Water quality sensor unit, water sample collection device and collection control module; The collection control module and the water quality sensor unit are both connected to the water sample collection device; The collection control module is used to collect and store water samples at multiple preset water levels; The collection control module is used to control the switching frequency corresponding to the preset water level when the water sample collection device collects water samples; The water quality sensor unit is used to obtain water quality parameters of a water sample.

2. The online water quality monitoring system for the secondary water supply side according to claim 1 is characterized in that: The water quality parameters include physical indicators, chemical indicators and biological indicators; The physical indicators include: water temperature, turbidity, color and odor; The chemical indicators include: pH value, dissolved oxygen, chemical oxygen demand, ammonia nitrogen content and heavy metal content; the heavy metals include lead, mercury and cadmium; The biological indicators include: total bacteria count, coliform group and algae biomass.

3. The online water quality monitoring system for the secondary water supply side according to claim 1 is characterized in that: The water sample collection device comprises: A water sample storage device, a main pipeline, multiple water sample collection branches and multiple switch components; The water inlets of different water sample collection branches are arranged at different preset water levels on the secondary water supply side; the water outlets of the multiple water sample collection branches are connected to the water inlet of the main pipeline; the water outlet of the main pipeline is connected to the water inlet of the water sample storage device; the switch assembly corresponds to the water sample collection branch one by one; A plurality of the switch components are all connected to the acquisition control module.

4. The online water quality monitoring system for the secondary water supply side according to claim 3 is characterized in that: The water sample storage device is a sampling bottle or a flow container.

5. The online water quality monitoring system for the secondary water supply side according to claim 4 is characterized in that: The switch assembly comprises: Pressure reducing valves and solenoid valves; The pressure reducing valve and the solenoid valve are both connected to the acquisition control module.

6. The online water quality monitoring system for the secondary water supply side according to claim 4 is characterized in that: The water sample collection device also includes a flow regulator; The flow regulator is arranged on the main pipeline; The flow regulator is connected to the acquisition control module.

7. The online water quality monitoring system for the secondary water supply side according to claim 4 is characterized in that: The secondary water supply side water quality online monitoring system also includes: a human-machine operation module; The human-machine operation module is connected to the water quality sensor unit and the acquisition control module respectively; the human-machine operation module is also connected to the remote control terminal; The human-machine operation module is used to obtain a mode selection instruction; the mode selection instruction includes an automatic sampling mode and a manual sampling mode; when the acquisition control module receives the manual sampling mode, it controls the switch component on the water sample collection branch corresponding to the target preset water level; when the acquisition control module receives the automatic sampling mode, it turns on the switch components on different water sample collection branches according to the preset frequency; at most one switch component is started at any time; The human-machine operation module is used to collect statistics on water quality parameters of water samples at different preset water levels, generate multiple curves, and display multiple curves; the human-machine operation module is also used to transmit the water quality parameters of water samples at different preset water levels and multiple curves to the remote control terminal.

8. The online water quality monitoring system for the secondary water supply side according to claim 7 is characterized in that: The human-machine operation module comprises: Mode selection instruction acquisition unit, control unit, display unit and transmission unit; The control unit is respectively connected to the mode selection instruction acquisition unit, the display unit, the transmission unit, the water quality sensor unit and the acquisition control module; The mode selection instruction acquisition unit is used to acquire a mode selection instruction; The control unit is used to collect statistics on water quality parameters of water samples at different preset water levels to generate multiple curves; The display unit is used to display water quality parameters of water samples at different preset water levels, as well as multiple curves; The transmission unit is used to transmit water quality parameters of water samples at different preset water levels and multiple curves to a remote control terminal.

9. The online water quality monitoring system for the secondary water supply side according to claim 7 is characterized in that: The secondary water supply side water quality online monitoring system further includes: a power module; The power supply module comprises a leakage protector, a power supply fuse and a switching power supply.

10. The online water quality monitoring system for the secondary water supply side according to claim 9 is characterized in that: The secondary water supply side water quality online monitoring system further comprises: a hollow housing; The water quality sensor unit, the collection control module, the power module, the water sample storage device of the water sample collection device, the control unit of the human-machine operation module and the transmission unit of the human-machine operation module are all arranged in the hollow shell; The mode selection instruction acquisition unit of the human-machine operation module and the display unit of the human-machine operation module are both arranged on the hollow shell; The hollow shell is provided with a first opening and a second opening; The main pipeline passes through the first opening and is connected to the water inlet of the water sample storage container; The water outlet pipe passes through the second opening and is connected to the water outlet of the water sample storage container.

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