Intelligent industrial circulating water descaling equipment control system and method

Abstract

The invention relates to an intelligent industrial circulating water descaling equipment control method, which is characterized in that a data acquisition and analysis module of an industrial controller is responsible for acquiring detection point data of each sensor and action state data of each working part and regularly sending the data to a scheduling module, and the scheduling module sends the data to a touch screen for display when the touch screen sends a reading request; meanwhile, the dispatching module analyzes key data in the data and sends an emergency intervention command to the pulse electric field adjusting module and the pollution discharge control module according to the key data, so that the corresponding modules are promoted to take measures for adjustment. From the related angles of equipment operation safety protection, the action process of each execution element when the equipment normally works, acquisition, output and display of equipment operation parameters and the like, automatic control over circulating water descaling is achieved, the descaling efficiency is improved, and manpower and material resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial water treatment, and in particular to a control system and method for intelligent industrial circulating water descaling equipment. Background Art

[0002] At present, metallurgy, chemical industry, manufacturing and other industries need to use a lot of cooling water or production water in the production and operation process. In order to save costs, this kind of water is often recycled, usually called industrial circulating water. The source of industrial circulating water is generally taken from natural waters, and the water hardness is high, which causes scaling in supporting pipelines, pumps, valves and other equipment as well as production equipment such as boilers. Severe scaling will cause a lot of primary energy waste in related equipment, and even cause serious consequences such as boiler bulging and pipe bursting. In order to effectively descale industrial circulating water, the traditional practice is to add water stabilizers, but the added chemical agents are not only expensive, but also cause secondary pollution with wastewater discharge. Studies have shown that by applying a low-voltage pulse electric field to industrial circulating water, the scaling substances in the water are aggregated to form loose needle-shaped aragonite under the direct action of the low-voltage electric field, and precipitate at the bottom of the processor. These precipitates are discharged regularly, which is equivalent to reducing the calcium and magnesium ion content in the water, thereby effectively reducing the water hardness.

[0003] Based on the above principle, the present invention designs a control system and method for industrial circulating water descaling equipment, which realizes automatic control of circulating water descaling from the perspectives of equipment operation safety protection, the action flow of each actuator when the equipment is working normally, the collection, output and display of equipment operation parameters, etc., thereby improving the descaling efficiency and saving manpower and material resources. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an intelligent industrial circulating water descaling equipment control system and method. From the perspectives of equipment operation safety protection, the action flow of each actuator when the equipment is working normally, the collection, output and display of equipment operation parameters, etc., the automatic control of circulating water descaling is realized, the descaling efficiency is improved, and manpower and material resources are saved. The present invention is suitable for industrial water treatment systems such as hotel central air-conditioning cooling circulating water treatment systems, steel cable washing water systems, and chemical circulating water systems, and has achieved good application effects.

[0005] The object of the present invention is achieved in that: An intelligent industrial circulating water descaling equipment control system comprises a descaling equipment and an industrial controller, wherein the descaling equipment is connected to a circulating water main system in a bypass form, the descaling equipment comprises a descaling pulse generator, a descaling barrel, a swirl barrel and a scale collecting pool, the circulating water main system sends circulating water into the descaling barrel via a circulating water inlet pipeline, a 1# pressure sensor is provided on the circulating water main system, a 2# pressure sensor is provided in the descaling barrel, an inlet pump and an inlet valve are provided on the circulating water inlet pipeline, a pulse descaling device is built in the descaling barrel, a scraping mechanism is provided on the barrel wall of the descaling barrel, a pulse electric field generated by the descaling pulse generator is applied to the pulse descaling device in the descaling barrel, a water outlet of the descaling barrel is connected to a swirl barrel, the swirl barrel is connected to the circulating water main system via a circulating water outlet pipeline, an outlet valve and a conductivity sensor are provided on the circulating water outlet pipeline, a 1# drain valve is provided at the bottom of the descaling barrel, and a 2# drain valve is provided at the bottom of the swirl barrel; The industrial controller is connected to the industrial touch screen via the RS232 serial port. The industrial controller exchanges information with the multi-channel I / O expander and the frequency converter via the 485 expander. The multi-channel I / O expander is used to collect field data of various valves, power supplies, sensors, and scraping mechanisms of the descaling equipment. The frequency converter is connected to the water inlet pump. The software part of the industrial controller is divided into five modules according to its function, including scheduling module, human-computer interaction analysis module, sewage control module, pulse electric field regulation module and data acquisition and analysis module.

[0006] Preferably, the multi-channel I / O expander controls the valves, power supplies, and scraper mechanism drive elements through its own digital output port; the digital input interface of the multi-channel I / O expander is responsible for collecting the on / off status of the drive elements and sending them to the industrial controller for the industrial controller to analyze and determine the operation of the relevant working parts of the descaling equipment; the analog input interface of the multi-channel I / O expander is connected to the sensor of the descaling equipment that uses analog quantity as the interface, collects field data and sends it to the industrial controller.

[0007] Preferably, the 1# pressure sensor, the 2# pressure sensor and the conductivity sensor form a sensor module, and the sensor group assists the industrial controller in collecting water pressure and water quality parameters.

[0008] Preferably, the industrial touch screen is used to display the status information and operating parameter information of each working component during the descaling process, and is also used to set the operating parameters of each working component, and transmit the set operating parameters to the industrial controller.

[0009] Preferably, the industrial controller can also exchange information with sensors of the 485 interface through a 485 expander, and the sensors of the 485 interface are connected from the slave interface of the 485 expander, and the data information is directly collected by the industrial controller.

[0010] A method for controlling an intelligent industrial circulating water descaling device adopts the above-mentioned device control system and comprises the following steps: The data acquisition and analysis module is responsible for collecting the data of each sensor detection point and the action status data of each working component, and sending them to the scheduling module at a regular interval. The scheduling module sends these data to the touch screen for display when the touch screen sends a read request. At the same time, the scheduling module will parse the key data and send emergency intervention commands to the pulse electric field regulation module and the sewage control module accordingly, prompting the corresponding modules to take measures for adjustment.

[0011] Preferably, the key data analyzed by the scheduling module include that the current conductivity value, pulse frequency, current size do not match the user settings, the sewage discharge cycle ends but the sewage discharge valve is not closed properly, and the water pressure of the circulating water main system is insufficient during the operation of the descaling equipment.

[0012] Preferably, in addition to implementing message forwarding between modules, the scheduling module also combines the timing information of the system timer and generates a notification message according to the timing process parameters of the equipment, and sends it to the corresponding module for parsing and execution.

[0013] Preferably, the pulse electric field regulating module receives the pulse regulating message sent by the scheduling module, and adjusts the front-stage input signal of the high-power pulse generating unit according to the message parameters to achieve the function of adjusting the pulse electric field parameters of the scaler.

[0014] Preferably, the sewage control module waits for sewage valve opening and closing, scraping mechanism raising, lowering and stopping messages from the scheduling module, which will trigger the sewage control module to organize corresponding digital output unit control commands and control the digital output unit to drive the actuator to act.

[0015] The beneficial effects of the present invention are: The descaling equipment is connected to the user's main circulating water system in bypass form to ensure that the equipment will not affect the normal operation of the user's main system under any circumstances; Equipped with an industrial touch screen (human-machine interface), users can use the human-machine interface to realize manual control and automatic control of the descaling equipment, and the switching between the two control modes should be convenient and flexible. The control system should also provide an operating parameter setting interface, through which users can set and adjust the necessary parameters in the operation of the equipment; In the automatic operation state, the descaling equipment should be able to sense the water condition changes of the user's main circulating water system. When the main circulating water system is short of water or stops running, the descaling equipment should be able to stop automatically. When the main system is running normally, the descaling equipment should be able to autonomously adopt the corresponding operation mode according to the automatic operation parameters pre-set by the user; In the automatic operation state, the descaling equipment should be able to perform relevant actions at a fixed time according to the relevant action parameters set by the user, and be able to dynamically adjust the descaling device current, pulse frequency and other parameters according to the conductivity detection value; In the manual operation state, except for the working current of the descaling device which is still controlled by the pressure of the circulating water main system, all other working parts are controlled by the user according to the actual situation.

[0016] In summary, from the perspectives of equipment operation safety protection, the action flow of each actuator when the equipment is working normally, the collection, output and display of equipment operation parameters, etc., the automatic control of circulating water descaling is realized, the descaling efficiency is improved, and manpower and material resources are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall structural diagram of a descaling device of an intelligent industrial circulating water descaling equipment control system of the present invention.

[0018] Figure 2 This is a schematic diagram of the composition structure of the hardware part of the industrial controller.

[0019] Figure 3 This is the functional module diagram of the industrial controller software part. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 3 The present invention relates to an intelligent industrial circulating water descaling equipment control system, comprising a descaling device and an industrial controller, wherein the descaling device is connected to a circulating water main system in a bypass form, and the descaling device comprises a descaling pulse generator, a descaling barrel, a swirl barrel and a descaling pool, wherein the circulating water main system sends circulating water into the descaling barrel via a circulating water inlet pipeline, and an inlet pump and an inlet valve are arranged on the circulating water inlet pipeline, and the descaling barrel has a built-in pulse descaling device, and the barrel wall of the descaling barrel is provided with a scraping mechanism, and the pulse electric field generated by the descaling pulse generator is applied to the pulse descaling device in the descaling barrel, and the pulse electric field will destroy the HOH bond formed between the two hydrogen atoms and the oxygen atom of the water molecule, thereby reducing the solubility of water to calcium and magnesium ions, which is equivalent to reducing the calcium and magnesium ion content in the water, thereby effectively reducing the water hardness.

[0021] The water outlet of the scale separation barrel is connected to the swirl barrel, and the water outlet of the swirl barrel is connected to the circulating water main system through a circulating water outlet pipeline. The circulating water outlet pipeline is provided with a water outlet valve and a conductivity sensor.

[0022] The bottom sewage outlet of the scale analysis barrel and the bottom sewage outlet of the cyclone barrel are both connected to the scale collection pool, and a 1# sewage valve is provided on the pipeline between the scale analysis barrel and the scale collection pool, and a 2# sewage valve is provided on the pipeline between the cyclone barrel and the scale collection pool. The scraping mechanism is driven to rise and fall by a driving motor, and the scraping mechanism that can be raised and lowered, the 1# sewage valve and the 2# sewage valve constitute a sewage discharge mechanism, and the industrial controller controls the sewage discharge mechanism to regularly discharge the dirt, carbonate compounds, etc. accumulated in the scale analysis barrel and the cyclone barrel into the scale collection pool.

[0023] A filter screen is arranged at the center of the swirl barrel, a water inlet and a sewage outlet of the swirl barrel are arranged on one side of the filter screen, and a water outlet of the swirl barrel is arranged on the other side of the filter screen.

[0024] The circulating water main system is provided with a 1# pressure sensor, and the scale separation barrel is provided with a 2# pressure sensor.

[0025] The 1# pressure sensor, 2# pressure sensor and conductivity sensor form a sensor module. The sensor group assists the industrial controller in collecting water pressure and water quality parameters, providing a basis for control system decision-making.

[0026] The industrial controller is connected to the industrial touch screen via the RS232 serial port. The industrial touch screen has two functions: one is to display the status information and operating parameter information of each working component during the descaling process; the other is to cooperate with the industrial controller to set the operating parameters of each working component and transmit the set operating parameters to the industrial controller. Control information.

[0027] Users can use the industrial touch screen (human-machine interaction interface) to achieve manual control and automatic control of the descaling equipment, and the switching between the two control modes should be convenient and flexible.

[0028] In the automatic operation state, the descaling equipment should be able to sense the changes in the water conditions of the user's circulating water main system. When the circulating water main system is short of water or stops running, the descaling equipment will automatically stop through the water inlet pump control. When the circulating water main system is operating normally, the descaling equipment can autonomously adopt the corresponding operation mode according to the automatic operation parameters pre-set by the user.

[0029] The industrial touch screen is equipped with an operating parameter setting interface, through which users can set and adjust the necessary parameters for equipment operation.

[0030] The main parameters that can be adjusted by the user during the operation of the descaling equipment are shown in Table 1 below: Table 1. List of adjustable main parameters of intelligent industrial circulating water descaling equipment

[0031] The industrial controller, as a 485 master device, exchanges information with 485 slave devices such as multi-channel I / O expanders and frequency converters through a 485 expander. The multi-channel I / O expander controls the driving elements (driving motors) of valves such as relays and circuit breakers, power supplies, and scraping mechanisms through its own digital output port; the digital input interface of the multi-channel I / O expander is responsible for collecting the on and off states of the driving elements and sending them to the industrial controller for the industrial controller to analyze and determine the action of the relevant working parts of the descaling equipment; the analog input interface of the multi-channel I / O expander is connected to the sensor of the descaling equipment that uses analog quantity as the interface, collects field data and sends it to the industrial controller.

[0032] During the hardware construction process, some sensors using 485 interface were also selected. These sensors are connected from the slave interface of the 485 expander, and the data information is directly collected by the industrial controller.

[0033] The software part of the industrial controller is divided into five modules according to its function, including scheduling module, human-computer interaction analysis module, sewage control module, pulse electric field regulation module and data acquisition and analysis module.

[0034] The scheduling module has a message queue and a message code associated task processing table. The scheduling module receives messages from other modules through its message queue (the present invention refers to sending messages to the scheduling module as the main control task). The message consists of a message code and a message parameter. The scheduling module searches and determines which module should process the message in the message code processing table according to the message sent by the main control task. Once determined, the message is forwarded to the target module, and the target module completes the corresponding function according to the message code and message parameters. In addition to realizing inter-module message forwarding, the scheduling module also combines the timing information of the system timer and generates a notification message according to the equipment timing process parameters shown in Table 1. It is sent to the corresponding module for parsing and execution.

[0035] The human-computer interaction parsing module is responsible for parsing the read and write function codes from the industrial touch screen, and the read and write function codes of the touch screen adopt the modbus-RTU format. If the module parses the read function code, the collected field sensor data and the current operating status data of each working part of the equipment will be transmitted to the touch screen. The touch screen transmits the data sent by the controller through the corresponding channel created when designing the interface, and receives these data through the variables associated with each channel created in the real-time database.

[0036] The touch screen writing function is mainly generated by the user's control requirements. When the user clicks the function button provided by the touch screen, the button event will call the pre-written touch screen script program. The touch screen script program decides whether to send the writing function to the controller based on the relevant parameters obtained from the controller by the read channel. If the controller receives the writing function code information, it will be submitted to the human-computer interaction parsing module to parse the function parameters (the present invention uses 0x10 function code, and the function parameters are in the 7th and 8th units of the modbus-rtu write information). The human-computer interaction parsing module converts the parsed function parameters into message codes, attaches the message parameters and further forwards them to the scheduling module for processing.

[0037] The sewage control module waits for messages from the scheduling module such as the sewage valve opening and closing, the scraping mechanism raising, lowering and stopping, etc. These messages will trigger the sewage control module to organize the corresponding digital output unit control command, control the digital output unit to drive the actuator to act, and realize the above functions. The sewage control module also waits for the second timing arrival message organized by the scheduling module according to the signal sent by the system timer. According to the second timing arrival message and the parameters such as the timing time and scraping time of the sewage discharge of the scale analysis barrel and the cyclone barrel given in Table 1, the sewage control module autonomously realizes various control functions after the timing time arrives.

[0038] The pulse electric field adjustment module receives the pulse adjustment message sent by the scheduling module, and adjusts the front-stage input signal of the high-power pulse generating unit according to the message parameters to adjust the pulse electric field parameters of the scale analyzer. In addition to realizing the above functions, the pulse electric field adjustment module also exchanges information with the special water treatment power supply (the special water treatment power supply is provided by a third-party manufacturer) through the modbus-rtu protocol to realize the function of adjusting the total output current of the power supply.

[0039] The data acquisition and analysis module is responsible for collecting the data of each sensor detection point and the action status data of each working component, and sending them to the scheduling module regularly. On the one hand, the scheduling module sends these data to the touch screen for display when the touch screen sends a read request. On the other hand, the scheduling module will analyze the key data, such as the current conductivity value, pulse frequency, current size that does not match the user settings, the sewage discharge cycle ends but the sewage discharge valve is not closed in place, the water pressure of the circulating water main system is insufficient during the operation of the descaling equipment, etc., and send emergency intervention commands to specific modules accordingly, prompting the corresponding modules to take measures to adjust, or even alarm, shut down, etc.

[0040] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An intelligent industrial circulating water descaling equipment control system, characterized by: It includes a descaling device and an industrial controller. The descaling device is connected to the main circulating water system in the form of a bypass. The descaling device includes a descaling pulse generator, a descaling barrel, a swirl barrel and a scale collecting pool. The main circulating water system sends circulating water into the descaling barrel through a circulating water inlet pipeline. A 1# pressure sensor is provided on the main circulating water system. A 2# pressure sensor is provided in the descaling barrel. An inlet pump and an inlet valve are provided on the circulating water inlet pipeline. A pulse descaling device is built in the descaling barrel. The barrel wall of the descaling barrel is provided with a scraping mechanism. The pulse electric field generated by the descaling pulse generator is applied to the pulse descaling device in the descaling barrel. The outlet of the descaling barrel is connected to the swirl barrel. The swirl barrel is connected to the main circulating water system through a circulating water outlet pipeline. An outlet valve and a conductivity sensor are provided on the circulating water outlet pipeline. A 1# drain valve is provided at the bottom of the descaling barrel. A 2# drain valve is provided at the bottom of the swirl barrel. The industrial controller is connected to the industrial touch screen via the RS232 serial port. The industrial controller exchanges information with the multi-channel I / O expander and the frequency converter via the 485 expander. The multi-channel I / O expander is used to collect field data of various valves, power supplies, sensors, and scraping mechanisms of the descaling equipment. The frequency converter is connected to the water inlet pump. The software part of the industrial controller is divided into five modules according to its function, including scheduling module, human-computer interaction analysis module, sewage control module, pulse electric field regulation module and data acquisition and analysis module.

2. According to claim 1, the intelligent industrial circulating water descaling equipment control system is characterized by: The multi-channel I / O expander controls the valves, power supplies, and scraper mechanism drive elements through its own digital output ports; The digital input interface of the multi-channel I / O expander is responsible for collecting the on / off status of the driving element and sending it to the industrial controller for analysis and judgment of the operation status of the relevant working parts of the descaling equipment; the analog input interface of the multi-channel I / O expander is connected to the sensor of the descaling equipment which uses analog quantity as the interface, collects field data and sends it to the industrial controller.

3. According to claim 1, the intelligent industrial circulating water descaling equipment control system is characterized by: The 1# pressure sensor, 2# pressure sensor and conductivity sensor form a sensor module. The sensor group assists the industrial controller in collecting water pressure and water quality parameters.

4. According to claim 1, the intelligent industrial circulating water descaling equipment control system is characterized by: The industrial touch screen is used to display the status information and operating parameter information of each working component during the descaling process, and is also used to set the operating parameters of each working component, and transmit the set operating parameters to the industrial controller.

5. According to claim 1, the intelligent industrial circulating water descaling equipment control system is characterized by: The industrial controller can also exchange information with the sensor of the 485 interface through the 485 expander, and the sensor of the 485 interface is connected from the slave interface of the 485 expander, and the data information is directly collected by the industrial controller.

6. A control method for intelligent industrial circulating water descaling equipment, characterized in that: Using the equipment control system described in any one of claims 1 to 5, The following steps are involved: The data acquisition and analysis module of the industrial controller is responsible for collecting the data of each sensor detection point and the action status data of each working component, and sending them to the scheduling module at a regular interval. The scheduling module sends these data to the touch screen for display when the touch screen sends a read request. At the same time, the scheduling module will parse the key data and send emergency intervention commands to the pulse electric field regulation module and the sewage control module accordingly, prompting the corresponding modules to take measures for adjustment.

7. The intelligent industrial circulating water descaling equipment control method according to claim 6 is characterized in that: The key data analyzed by the scheduling module include that the current conductivity value, pulse frequency, and current size do not match the user settings, the sewage discharge cycle ends but the sewage discharge valve is not closed properly, and the water pressure of the circulating water main system is insufficient during the operation of the descaling equipment.

8. The intelligent industrial circulating water descaling equipment control method according to claim 6 is characterized by: In addition to implementing message forwarding between modules, the scheduling module also combines the timing information of the system timer and generates a notification message according to the timing process parameters of the equipment, and sends it to the corresponding module for parsing and execution.

9. The intelligent industrial circulating water descaling equipment control method according to claim 6 is characterized in that: The pulse electric field regulating module receives the pulse regulating message sent by the scheduling module, and adjusts the front-stage input signal of the high-power pulse generating unit according to the message parameters to achieve the function of adjusting the pulse electric field parameters of the scale analyzer.

10. The intelligent industrial circulating water descaling equipment control method according to claim 6, characterized in that: The sewage control module waits for the sewage valve opening and closing, scraping mechanism raising, lowering and stopping messages from the scheduling module. These messages will trigger the sewage control module to organize the corresponding digital output unit control commands to control the digital output unit to drive the actuator to act.

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