Improved process water circulation control system

Abstract

The utility model relates to an improved process water circulation control system, which comprises a PLC (programmable logic controller), and an I / module of the PLC is connected with a turbidity sensor, a liquid level floating ball, an electromagnetic valve, a water pump and a cooling-water machine through a serial communication module. The PLC monitors the turbidity of a water system, the state of a liquid level floating ball, the on-off state of an electromagnetic valve, the running state of a water pump and the working state of a cooling-water machine through the turbidity sensor, the liquid level floating ball, the electromagnetic valve, the water pump and the cooling-water machine respectively, the PLC is connected with the PLC communication module through an RS communication port, and the PLC communication module is connected with the switch through the Ethernet. The switch is connected with the gateway, the cloud platform and the database, the PLC communication module transmits data to the switch through the Ethernet, and then the data are read and processed by the gateway and uploaded to the cloud platform and the database; according to the utility model, the traditional manual inspection and field operation can be replaced, the intelligent remote control and telemetering function is realized, and the inspection and maintenance of the circulating water system are facilitated.

Description

[Technical field]

[0001] The utility model relates to the technical field of circulating water system control, in particular to an improved process water circulating control system. [Background Technology]

[0002] During the production process of optical cables, it is necessary to use circulating water with constant temperature for cooling. The process circulating water needs to have a constant temperature and must not be interrupted due to water pump failure. When the water quality is polluted, the pipeline must be switched. Therefore, the process circulating water must be temperature controlled, flow monitored, fault alarmed, and automatically switched to a water pump. The original control system uses on-site DDC control. Although it can achieve automatic water temperature control and automatic switching to a standby pump when the water pump fails, the disadvantage is that it is inconvenient to query the operating data, remote monitoring and remote control are not possible, and alarm signals cannot be provided remotely. [Contents of the utility model]

[0003] The purpose of the utility model is to solve the above-mentioned shortcomings and provide an improved process water circulation control system, which can replace traditional manual inspections and on-site operations, realize intelligent remote control and telemetry functions, and facilitate the inspection and maintenance of the circulating water system.

[0004] In order to achieve the above-mentioned purpose, an improved process water circulation control system is designed, comprising a PLC controller 1, the I / O module of the PLC controller 1 is connected to a turbidity sensor 5, a liquid level float, a solenoid valve 8, a water pump 7 and a chiller 9 through a serial communication module, the turbidity sensor 5, the liquid level float, the solenoid valve 8, the water pump 7 and the chiller 9 are all installed in the water system, the PLC controller 1 monitors the turbidity of the water system, the liquid level float state, the solenoid valve switch state, the water pump operation state and the chiller working state through the turbidity sensor 5, the liquid level float, the solenoid valve 8, the water pump 7 and the chiller 9 respectively, the PLC controller 1 is connected to a PLC communication module 14 through an RS232 communication port, the PLC communication module 14 is connected to a switch 10 through Ethernet, the switch 10 is respectively connected to a gateway 11, a cloud platform 12 and a database 13, the PLC communication module 14 transmits data to the switch 10 through Ethernet, and then is read and processed by the gateway 11 and uploaded to the cloud platform 12 and the database 13.

[0005] Furthermore, the I / O module of the PLC controller 1 is also connected to the temperature sensor 3, the pressure sensor 4, the thermal protection relay 6 and the water meter 15 through the serial communication module, and performs water quality detection based on the turbidity sensor 5, the temperature sensor 3 and the pressure sensor 4, and then automatically performs corresponding actions on the solenoid valve 8 and the water pump 7.

[0006] Furthermore, another output port of the PLC controller 1 is connected to the HMI touch screen 2 via RS232 communication. The PLC controller 1 and the HMI touch screen 2 are an integrated structure. The HMI touch screen 2 performs real-time monitoring, display and control of the parameters of the temperature sensor 3, pressure sensor 4, turbidity sensor 5, water meter 15, water pump 7, solenoid valve 8 and chiller 9.

[0007] Furthermore, the temperature sensor 3, pressure sensor 4, turbidity sensor 5, thermal protection relay 6, water pump 7, solenoid valve 8, chiller 9, and water meter 15 are all connected to the I / O module of the PLC controller 1 through the serial port. The PLC controller 1 stores the read information into the corresponding image register in the memory. The output end of the image register is connected to the output latch. The output latch enables the output terminal to output a control signal to the outside world through an isolation circuit and a driving power amplifier circuit, thereby starting and stopping the chiller and switching the solenoid valve.

[0008] Furthermore, the cloud platform 12 is connected to a mobile phone or a computer via a wireless network, and a user logs into the cloud platform 12 via a mobile phone or a computer to monitor data and manually control the solenoid valve 8 and the water pump 7 .

[0009] Furthermore, the solenoid valve 8 is a solenoid valve with signal feedback, and the solenoid valve 8 includes a solenoid valve body, and a signal feedback device is fixedly connected to the bottom end of the solenoid valve body, and the signal feedback device is electrically connected to the PLC controller 1. The solenoid valve 8 determines the working status through the signal feedback device and transmits the working status information to the cloud platform 12.

[0010] Furthermore, the serial communication module is directly plugged into the DB9 interface of the PLC controller 1. The PLC controller 1 enables the output terminal to output a control signal to the outside world through an isolation circuit and a driving power amplifier circuit, thereby driving an external load, such as starting and stopping a chiller, switching a solenoid valve, etc.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] (1) The utility model adopts a solenoid valve with signal feedback to control the process water pipeline, replacing the traditional butterfly valve, and can realize remote detection of the working status of the solenoid valve, thus avoiding unnecessary losses;

[0013] (2) The utility model uses various sensors to access the PLC controller, and replaces the traditional manual inspection and on-site operation through the PLC controller, touch screen, and cloud gateway to realize intelligent remote control and telemetry functions;

[0014] (3) The utility model is more convenient for monitoring and remotely controlling various data of the process water system, which can greatly reduce the loss of process water and realize the recycling of process water;

[0015] (4) The utility model can monitor various data in the system in real time and realize remote control of on-site equipment by simply logging into the cloud platform through a mobile phone or computer on a browser. [Drawings]

[0016] Figure 1 It is a schematic diagram of component installation and wiring of the utility model;

[0017] Figure 2 It is the system principle diagram of the utility model;

[0018] In the figure: 1, PLC controller 2, HMI touch screen 3, temperature sensor 4, pressure sensor 5, turbidity sensor 6, thermal protection relay 7, water pump 8, solenoid valve 9, chiller 10, switch 11, gateway 12, cloud platform 13, database 14, PLC communication module 15, water meter. [Specific implementation method]

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] As attached Figure 1 and attached Figure 2 As shown, the utility model provides an improved process water circulation control system, including a PLC controller 1, an I / O module of the PLC controller 1 is connected to a turbidity sensor 5, a liquid level float, a solenoid valve 8, a water pump 7 and a chiller 9 through a serial communication module, the turbidity sensor 5, the liquid level float, the solenoid valve 8, the water pump 7 and the chiller 9 are all installed in the water system, the PLC controller 1 monitors the turbidity of the water system, the liquid level float state, the solenoid valve switch state, the water pump operation state and the chiller operation state through the turbidity sensor 5, the liquid level float, the solenoid valve 8, the water pump 7 and the chiller 9 respectively, the PLC controller 1 is connected to a PLC communication module 14 through an RS232 communication port, the PLC communication module 14 is connected to a switch 10 through Ethernet, the switch 10 is respectively connected to a gateway 11, a cloud platform 12 and a database 13, the PLC communication module 14 transmits data to the switch 10 through Ethernet, and then is read and processed by the gateway 11 and uploaded to the cloud platform 12 and the database 13.

[0021] Among them, another output port of the PLC controller 1 is connected to the HMI touch screen 2 through RS232 communication. The PLC controller 1 and the HMI touch screen 2 are an integrated structure. The HMI touch screen 2 monitors, displays and controls the parameters of the temperature sensor 3, pressure sensor 4, turbidity sensor 5, water meter 15, water pump 7, solenoid valve 8 and chiller 9 in real time. The I / 0 module of the PLC controller 1 is also connected to the temperature sensor 3, the pressure sensor 4, the thermal protection relay 6 and the water meter 15 through the serial communication module, and performs water quality detection according to the turbidity sensor 5, the temperature sensor 3 and the pressure sensor 4, and then automatically performs corresponding actions on the solenoid valve 8 and the water pump 7; the temperature sensor 3, the pressure sensor 4, the turbidity sensor 5, the thermal protection relay 6, the water pump 7, the solenoid valve 8, the chiller 9 and the water meter 15 are all connected to the I / 0 module of the PLC controller 1 through the serial port, and the PLC controller 1 stores the read information into the corresponding image register in the memory, and the output end of the image register is connected to the output latch, and the output latch enables the output terminal to output a control signal to the outside world through the isolation circuit and the driving power amplifier circuit, thereby starting and stopping the chiller and switching the solenoid valve.

[0022] In the utility model, the serial communication module is directly plugged into the DB9 interface of the PLC controller 1. The PLC controller 1 enables the output terminal to output a control signal to the outside through an isolation circuit and a driving power amplifier circuit, thereby driving an external load, such as starting and stopping a chiller, switching a solenoid valve, etc. The solenoid valve 8 is a solenoid valve with signal feedback. The solenoid valve 8 includes a solenoid valve body. A signal feedback device is fixedly connected to the bottom of the solenoid valve body. The signal feedback device is electrically connected to the PLC controller 1. The solenoid valve 8 determines the working state through the signal feedback device and transmits the working state information to the cloud platform 12; the solenoid valve 8 determines the working state of the solenoid valve by adding a signal feedback device, and then the signal feedback device transmits the working state information of the solenoid valve to the cloud platform 12 through a related feedback circuit, so that the user can remotely detect the working state of the solenoid valve. If an unexpected situation occurs, an effective judgment can be made remotely, thereby avoiding unnecessary losses; the cloud platform 12 is connected to a mobile phone or computer through a wireless network, and the user logs in to the cloud platform 12 through a mobile phone or computer to monitor data and manually control the solenoid valve 8 and the water pump 7.

[0023] In the utility model, the I / 0 module of the PLC controller is connected to the turbidity sensor, liquid level float, solenoid valve, water pump and chiller through the serial communication module, and the PLC controller is connected through the PLC communication module, the switch and the gateway; the PLC and the gateway are both used as controllers to control the system together, and the system performs water quality detection according to sensors such as the turbidity sensor and automatically makes corresponding actions on the solenoid valve and water pump; the gateway uploads data to the cloud platform and SQL Server database through the switch; the cloud platform can be logged in to monitor data through portable devices such as mobile phones or computers, and field equipment such as solenoid valves and water pumps can be manually remotely controlled to monitor the system operation status in real time. Turbidity sensors and other sensors are used to detect water quality, and the solenoid valve with signal feedback is activated when the water quality does not meet the standard, switching the water supply and drainage pipelines; the solenoid valve has signal feedback, which displays the current valve and pipeline status, which is convenient for inspection and maintenance; the serial communication module is directly plugged into the DB9 interface of the PLC controller, and the PLC controller drives the power amplifier circuit through the isolation circuit, so that the output terminal outputs a control signal to the outside world to drive the external load; another output port of the PLC controller is connected to the field touch screen.

[0024] During normal production on the production line, the process water system provides constant temperature process water to the production line sinks to cool the products. The sinks need to be cleaned regularly, and it was difficult to discharge sewage. The production line personnel needed to notify the equipment maintenance personnel to manually switch, which was particularly troublesome, especially during the night shift. The utility model solves the problems of the original process water system's inability to monitor the water supply status in real time, the inability to control the system in time, the lack of real-time remote alarms, and incomplete monitoring data coverage. It can achieve comprehensive monitoring and remote control of the process water system. When cleaning the sink, manual notification is no longer required. When the water quality inspection system detects that the water quality does not meet the standard, the solenoid valve will automatically operate, and the water supply and drainage pipes will be automatically switched. After the switch is completed, the solenoid valve signal feedback displays the current status of the water supply and drainage pipes, so that the equipment maintenance personnel can record and check.

[0025] Moreover, all relevant data of the original process water system can only be viewed on site, and water pumps, valves and other equipment can only be controlled on site. When the system fails, it cannot be discovered in time, which is very likely to have a serious impact on production and waste water resources; the cloud platform processes water consumption, electricity consumption and equipment operation data, analyzes abnormal energy consumption, and saves resources. Compared with the original system, the utility model is more convenient to monitor and remotely control various data of the process water system, can greatly reduce the loss of process water, and realize the recycling of process water. After the transformation is completed, you only need to log in to the cloud platform on the browser through a mobile phone or computer to monitor various data in the system in real time and remotely control the on-site equipment; the system can also support the database for historical data storage, and support WeChat, voice and other remote alarm methods.

[0026] The process water control system of the utility model mainly includes the collection of various data of process water and related equipment, the control of on-site equipment, various sensors collect relevant data and transmit them to PLC, after the PLC processes the data, the process water status, equipment operation status, etc. are sent to the Internet of Things gateway through the communication module, and another output port of the module is connected to the on-site touch screen to realize local operation; the PLC and the gateway process the data, execute complex instructions, and make corresponding controls on the on-site water pump, solenoid valve, chiller, etc.; the on-site water pump suction signal, solenoid valve feedback signal and chiller operation signal are transmitted to the gateway and uploaded to the cloud platform to monitor and analyze various data in real time; the main gateway can also upload the data to the government energy management platform to realize intelligent energy consumption management; if the cloud platform detects alarm information, it can also automatically publish WeChat, SMS and voice alarms; the cloud platform backs up and stores various data, and publishes the configuration screen of the cloud gateway through the web, and the management personnel can remotely view and control the on-site equipment through mobile phones, computers, etc.

[0027] The data that need to be monitored in the utility model include process water temperature, pressure, turbidity, liquid level float state, water pump operation state, solenoid valve switch state, chiller working state, water consumption, etc., and also need to remotely control on-site equipment such as water pumps, solenoid valves, etc. Among them, various sensors, water meters, and equipment are connected to the I / 0 module of the PLC through the serial port. The PLC stores the read information into the corresponding image register in the memory, and then transfers the state in the output image register to the output latch. Through the isolation circuit, the power amplifier circuit is driven, so that the output terminal outputs a control signal to the outside world to drive external loads, such as starting and stopping the chiller, switching the solenoid valve, etc.

[0028] The utility model adopts a method of directly inserting a PLC communication module into the DB9 interface of the PLC. The communication module transmits data to the switch via Ethernet, which is then read and processed by the gateway and uploaded to the cloud platform and database. The on-site touch screen is connected through another output port for local control. Both the PLC and the gateway act as controllers to jointly control the process water system. When the equipment needs to be remotely controlled, the browser cloud platform can be logged in through a mobile phone or computer to operate on the page; the control command is sent from the cloud platform to the gateway, and the gateway executes the corresponding instruction after processing and sends the result to the PLC via the switch and the communication module. The PLC executes the corresponding instruction to control the on-site equipment and sends the execution result back to the gateway. After processing, the gateway uploads the result to the cloud platform for display, and generates an operation record for storage.

[0029] At the same time, the data of the gateway can be connected to the remote database server for storage. The data is classified into four types: real-time data, real-time alarm, historical data and historical alarm. By analyzing and processing the water consumption, water use anomalies can be discovered in time to prevent water waste. The cloud platform can use Xunrao Energy Management Platform for energy data management and analysis. It can process data such as water consumption, electricity consumption and equipment operation status, and analyze water use anomalies. The cloud platform can publish the configuration information in the gateway in the form of a web, and can upload configuration projects of different projects for easy monitoring and remote operation at any time. The system can also set an operation password to prevent unrelated personnel from controlling on-site equipment and ensure system security. The cloud platform can also query the historical alarm records of the equipment, and can also delete and export data records in single points and batches for easy maintenance.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0031] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. An improved process water circulation control system, characterized in that: The invention comprises a PLC controller (1), wherein an I / O module of the PLC controller (1) is connected to a turbidity sensor (5), a liquid level float, a solenoid valve (8), a water pump (7) and a water chiller (9) via a serial communication module; the turbidity sensor (5), the liquid level float, the solenoid valve (8), the water pump (7) and the water chiller (9) are all installed in a water system; the PLC controller (1) monitors the turbidity of the water system, the state of the liquid level float, the solenoid valve (8), the water pump (7) and the water chiller (9) respectively via the turbidity sensor (5), the liquid level float, the solenoid valve (8), the water pump (7) and the water chiller (9). The PLC controller (1) is connected to a PLC communication module (14) via an RS232 communication port, the PLC communication module (14) is connected to a switch (10) via Ethernet, the switch (10) is respectively connected to a gateway (11), a cloud platform (12) and a database (13), the PLC communication module (14) transmits data to the switch (10) via Ethernet, and the data is then read and processed by the gateway (11) and uploaded to the cloud platform (12) and the database (13).

2. The improved process water circulation control system according to claim 1, characterized in that: The I / O module of the PLC controller (1) is also connected to a temperature sensor (3), a pressure sensor (4), a thermal protection relay (6) and a water meter (15) via a serial communication module, and performs water quality detection based on the turbidity sensor (5), the temperature sensor (3) and the pressure sensor (4), thereby automatically making corresponding actions on the solenoid valve (8) and the water pump (7).

3. The improved process water circulation control system according to claim 2, characterized in that: Another output port of the PLC controller (1) is connected to the HMI touch screen (2) via RS232 communication. The PLC controller (1) and the HMI touch screen (2) are an integrated structure. The HMI touch screen (2) performs real-time monitoring, display and control of parameters of a temperature sensor (3), a pressure sensor (4), a turbidity sensor (5), a water meter (15), a water pump (7), a solenoid valve (8) and a chiller (9).

4. The improved process water circulation control system according to claim 3, characterized in that: The temperature sensor (3), pressure sensor (4), turbidity sensor (5), thermal protection relay (6), water pump (7), solenoid valve (8), water chiller (9), and water meter (15) are all connected to the I / O module of the PLC controller (1) through the serial port. The PLC controller (1) stores the read information into the corresponding image register in the memory. The output end of the image register is connected to the output latch. The output latch enables the output terminal to output a control signal to the outside world through an isolation circuit and a driving power amplifier circuit, thereby starting and stopping the water chiller and switching the solenoid valve.

5. The improved process water circulation control system according to claim 1, characterized in that: The cloud platform (12) is connected to a mobile phone or a computer via a wireless network, and a user logs into the cloud platform (12) via a mobile phone or a computer to monitor data and manually control the solenoid valve (8) and the water pump (7).

6. The improved process water circulation control system according to claim 1, characterized in that: The solenoid valve (8) is a solenoid valve with signal feedback, and comprises a solenoid valve body. A signal feedback device is fixedly connected to the bottom end of the solenoid valve body, and the signal feedback device is electrically connected to the PLC controller (1). The solenoid valve (8) determines the working state through the signal feedback device and transmits the working state information to the cloud platform (12).

7. The improved process water circulation control system according to claim 1, characterized in that: The serial communication module is directly plugged into the DB9 interface of the PLC controller (1), and the PLC controller (1) enables the output terminal to output a control signal to the outside world through an isolation circuit and a driving power amplifier circuit.

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