Full-automatic regeneration control device and control method for fine treatment of cation and anion resin
By designing a fully automatic regeneration control device, the problem of not being able to automatically and accurately control the regeneration liquid parameters in the prior art is solved, and the precise control of the resin regeneration flow rate, concentration and temperature is achieved, and the regeneration effect and automation level are improved.
Patent Information
- Application Number
- CN202411484882.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-04-29
AI Technical Summary
The existing fine-treated yang-yin resin regeneration system cannot automatically and accurately control the flow rate, concentration and temperature of the regeneration liquid, resulting in the resin regeneration effect not meeting the design goals.
A fully automatic regeneration control device is designed, including a regenerated liquid flow automatic adjustment module, an acid-base concentration automatic adjustment module and a temperature control module. The closed-loop control of the regenerated liquid parameters is achieved through automatic adjustment valves, flow meters, acid-base concentration meters and temperature sensors.
Automatic and precise control of the flow rate, acid and alkali concentration and temperature of the regeneration liquid is achieved, and the resin regeneration effect and automation level are improved, ensuring that the regeneration process is carried out under optimal conditions.
Smart Images
Figure CN119897172A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of power plant condensate polishing, and in particular to a fully automatic regeneration control device and method for polishing cation and anion resins. Background Art
[0002] In the regeneration process of high-speed mixed-bed cation and anion resins in the fine treatment system, it is necessary to control parameters such as the concentration, flow rate, temperature, and total amount of the regenerated liquid. The existing regeneration system is equipped with devices such as acid-base concentration meters, flow meters, temperature probes, and magnetic flap level meters on the regenerated liquid pipeline. However, these devices can only measure the concentration, flow rate, and temperature of the regenerated liquid, and cannot automatically adjust these parameters. Usually, the operating personnel are required to adjust the flow rate, acid-base concentration, and temperature of the regenerated liquid by adjusting the opening of the manual two-way valve, the manual three-way valve, the stroke of the metering pump, etc. The above three parameters are the key parameters that need to be controlled for the regeneration of the fine treatment cation and anion resins, and high control accuracy is required. However, it is difficult to achieve precise control of the above key regeneration parameters by manual adjustment. If the conditions for resin regeneration do not meet the requirements, the resin regeneration effect will not meet the design goals. In this regard, we propose a fully automatic regeneration control device and control method for fine treatment cation and anion resins. Summary of the invention
[0003] In order to solve the above technical problems, a fully automatic regeneration control device and control method for fine-treatment cation and anion resins are provided. This technical solution solves the above-mentioned problem that the flow rate, concentration and temperature of the regeneration liquid cannot be automatically and accurately controlled during the regeneration process of fine-treatment cation and anion resins.
[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a fully automatic regeneration control device and control method for finely treated cation and anion resins, the fully automatic regeneration control device comprising: a regeneration liquid flow automatic adjustment module, a regeneration liquid acid-base concentration automatic adjustment module, a regeneration liquid temperature control module and an automatic control device module;
[0005] The regeneration liquid flow automatic regulation module automatically regulates the water supply flow of the regeneration liquid based on the automatic regulating valve unit, and the online flow meter provides feedback to achieve closed-loop control of the flow, so that the regeneration liquid is kept within the set flow range;
[0006] The automatic adjustment module for acid-base concentration of regeneration liquid adjusts the delivery flow rate of acid-base stock solution based on the acid-base concentration automatic adjustment unit to adjust the acid-base concentration of regeneration liquid, and provides feedback through the online acid-base concentration meter to achieve closed-loop control of acid-base concentration, and finally adjust the acid-base concentration of regeneration liquid to within the required range;
[0007] The regeneration liquid temperature control module automatically controls the temperature based on the opening ratio of the hot and cold water three-way regulating valve and the temperature of the outlet pipe temperature sensor;
[0008] The automatic control device module is electrically connected to the regeneration liquid flow automatic adjustment module, the regeneration liquid acid-base concentration automatic adjustment module and the regeneration liquid temperature control module, and is used to control and adjust each module.
[0009] Preferably, the regeneration liquid flow automatic regulation module includes a regeneration desalted water flow metering unit and an automatic regulating valve unit. The automatic regulating valve unit and the flow metering unit are installed on the acid-base regeneration pipeline, and are electrically connected to the automatic control device module. The water flow required for resin regeneration is pre-set, and the automatic control device module automatically regulates the incoming water flow in a closed loop through the automatic regulating valve based on the collected numerical readings.
[0010] Preferably, the automatic adjustment method of the regeneration liquid flow automatic adjustment module is as follows: during the fine treatment of the cation and anion resin regeneration process, all valves and the main water supply pump on the acid and alkali regeneration liquid pipeline are opened, and the automatic control device module reads the value of the flow metering unit in real time. If the incoming water flow is less than the set value, the opening of the incoming water automatic regulating valve is automatically increased step by step; if the incoming water flow is greater than the set value, the opening of the incoming water automatic regulating valve is automatically decreased step by step.
[0011] Preferably, the regeneration liquid acid-base concentration automatic adjustment module includes three parts: an acid-base raw liquid conveying unit, an acid-base liquid concentration automatic adjustment unit, and an online acid-base concentration meter unit.
[0012] Preferably, when the regenerated acid-base solution delivery unit is an acid-base injector, the acid-base solution concentration automatic regulating unit is an automatic regulating valve device installed on the inlet pipe of the acid-base injector.
[0013] Preferably, when the regenerated acid-base solution delivery unit is an acid-base metering pump, the acid-base solution concentration automatic adjustment unit is a pump speed control device such as a frequency converter electrically connected to the acid-base metering pump.
[0014] Preferably, the regenerated acid and alkali solution concentration automatic adjustment unit automatically adjusts the concentration of the regenerated liquid based on the automatic regulating valve unit installed on the acid and alkali pipeline. The automatic adjustment method for the acid and alkali concentration of the regenerated liquid includes: the acid and alkali concentration meter is electrically connected to the automatic control device module, and the required acid and alkali concentration value is set on the automatic control device module during resin regeneration. The automatic control device module reads the acid and alkali concentration parameter in real time. If it is less than the set value, the opening of the automatic regulating valve installed on the acid and alkali pipeline is automatically and gradually increased. If it is greater than the set value, the opening of the automatic regulating valve is automatically and gradually decreased.
[0015] Preferably, the acid-base concentration automatic adjustment unit adjusts the acid-base concentration based on a pump speed control device such as a frequency converter electrically connected to the acid-base metering pump, and its automatic adjustment method is as follows: when the resin is regenerated, the required acid-base concentration value is set on the automatic control device module, and the automatic control device module reads the value of the acid-base concentration meter installed correspondingly on the acid-base regeneration liquid pipeline in real time. If it is less than the set value, the speed of the acid-base metering pump is increased through the pump speed control device such as the frequency converter to increase the supply of the acid-base liquid, thereby increasing the acid-base concentration; if it is greater than the set value, the speed of the acid-base metering pump is reduced through the pump speed control device such as the frequency converter to reduce the supply of the acid-base liquid, thereby reducing the acid-base concentration; through automatic adjustment, the measured value of the acid-base concentration gradually approaches the set value.
[0016] Preferably, the regeneration liquid temperature control module comprises an automatic three-way valve and a temperature transmitter, the two inlets of the cold and hot water automatic three-way valve are respectively connected to the cold water and hot water supply pipelines, the hot water is supplied by an electric water tank, and a temperature transmitter is installed after the cold and hot water are mixed on the outlet pipeline of the three-way valve, and the automatic three-way valve and the temperature transmitter equipment are electrically connected to the automatic control device module; its automatic temperature adjustment method is: when the resin is regenerated, the required temperature of the regeneration liquid is set on the automatic control device module, and the automatic control device module collects the temperature transmitter value in real time. When it is less than the set value, the automatic control device module adjusts the opening of the automatic three-way valve, the opening of the hot water inlet increases, and the opening of the cold water inlet decreases at the same time, and the water temperature rises accordingly after the cold and hot water are mixed at the outlet. When the read temperature transmitter value is greater than the set value, the automatic control device module adjusts the opening of the automatic three-way valve, so that the opening of the hot water inlet decreases, the opening of the cold water inlet increases accordingly, and the water temperature drops after the cold and hot water are mixed at the outlet. Through automatic adjustment, the regeneration liquid temperature will continue to approach the set value.
[0017] Preferably, the automatic control device module can be constructed using a single-chip microcomputer, a PLC or a DCS controller. In addition, the automatic control device needs to be designed with a reserved hardware interface and a software operation interface. The reserved hardware interface is used to connect the devices in the aforementioned regeneration liquid flow automatic adjustment module, the regeneration liquid acid-base concentration automatic adjustment module, and the regeneration liquid temperature control module. The reserved software operation interface is used to pre-set the regeneration liquid flow value, the regeneration liquid acid-base concentration value, and the regeneration liquid temperature value.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] The present invention adjusts the concentration and flow rate by setting the required acid-base concentration and regeneration flow rate during resin regeneration and controlling the corresponding automatic regulating valve opening and the speed of the metering pump. The closed-loop control of the acid-base concentration and the regeneration flow rate is achieved based on the flow meter and the acid-base concentration meter. Through the automatic control method, automatic calibration of the flow meter and the acid-base concentration meter is achieved, thereby maximizing the automation level of resin regeneration and ensuring the resin regeneration effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural framework diagram of the fully automatic regeneration control system of the present invention;
[0021] Figure 2 This is a schematic diagram of the fully automatic regeneration control device for finely treated cation and anion resins of the present invention;
[0022] Figure 3 This is a schematic diagram of the speed regulation structure of the acid-base metering pump of the present invention;
[0023] Figure 4 It is a schematic diagram of the hot water supply structure of the present invention. DETAILED DESCRIPTION
[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0025] A fully automatic regeneration control device and control method for finely treated cation and anion resins, comprising: a regeneration liquid flow automatic adjustment module, a regeneration acid and alkali solution concentration automatic adjustment module, a regeneration liquid temperature control module and an automatic control device module;
[0026] The regeneration liquid flow automatic regulation module automatically regulates the water supply flow of the regeneration liquid based on the automatic regulating valve unit, and the online flow meter provides feedback to achieve closed-loop control of the flow, ultimately keeping the regeneration liquid within the set flow range;
[0027] The automatic adjustment module for acid-base concentration of regeneration liquid adjusts the delivery flow rate of acid-base stock solution based on the acid-base concentration automatic adjustment unit to adjust the acid-base concentration of regeneration liquid, and provides feedback through the online acid-base concentration meter to achieve closed-loop control of acid-base concentration, and finally adjust the acid-base concentration of regeneration liquid to within the required range;
[0028] The regeneration liquid temperature control module is adjusted based on the opening ratio of the automatic three-way regulating valve, and the temperature of the water outlet pipe temperature sensor of the automatic three-way valve is fed back to achieve closed-loop control of the regeneration liquid temperature, and finally the regeneration liquid temperature is adjusted to the set range;
[0029] The automatic control device module is built with a PLC controller and a touch screen, which are connected and communicated via a data line. The PLC controller is equipped with analog output and input modules, and the flow rate, acid-base concentration, and temperature setting items required for resin regeneration are configured on the touch screen human-machine interface. After these items are set through the touch screen human-machine interface, they can be transmitted to the PLC controller via data line communication.
[0030] Example 1
[0031] refer to Figure 2 , Figure 3 The automatic regulating valve unit in the regeneration liquid flow regulating module is connected to the analog output module of the PLC controller, and the online flow meter unit is connected to the analog input module of the PLC controller. The PLC controller can read the parameter value of the online flow meter unit and the opening parameter of the automatic regulating valve in real time through the analog input module, and can output the required opening value signal to the automatic regulating valve through the analog output module, and the automatic regulating valve automatically adjusts the valve opening according to the signal.
[0032] The automatic adjustment method of the regeneration liquid flow automatic adjustment module is as follows: during the regeneration process of the fine treatment of the cation and anion resins, all valves and the main water supply pump on the acid and alkali regeneration liquid pipeline are opened, and the PLC controller reads the value of the flow metering unit in real time. If the incoming water flow is less than the set value, the opening of the incoming water automatic regulating valve is automatically gradually increased; if the incoming water flow is greater than the set value, the opening of the incoming water automatic regulating valve is automatically gradually reduced. When the resin regeneration stops, since the flow is zero, the real-time value of the flow meter read by the PLC controller will always be less than the set value. The PLC controller will adjust the opening value of the automatic regulating valve to 100% and maintain the opening, so that the next time the resin starts to regenerate, this device will not cause adverse effects on the start of the resin regeneration process.
[0033] The desalted water flow metering unit in the present application can accurately measure the flow of the regeneration liquid, provide a reliable data basis for the automatic control of the PLC controller, help ensure that the amount of water used in the regeneration process meets the preset requirements, and improve the accuracy and effect of regeneration. The automatic regulating valve unit adjusts its own opening according to the instructions of the PLC controller, and can increase or decrease the flow of liquid flowing in. This precise flow control can avoid poor regeneration effect due to unstable flow, improve the consistency and reliability of regeneration, and do not require frequent manual adjustment of flow, saving labor costs and time. The PLC controller can monitor and adjust the flow in real time, making the regeneration process more efficient and automated; when the system detects a change in flow, the automatic regulating valve can respond quickly and adjust the flow to the preset value. This rapid response capability can improve production efficiency and reduce production interruptions caused by flow fluctuations.
[0034] Example 2
[0035] refer to Figure 2The acid raw liquid is transported by an acid injector, and an automatic regulating valve is installed at the acid liquid inlet of the acid injector. The valve body of this automatic regulating valve adopts a rubber-lined diaphragm valve, which can effectively prevent acid from corroding the valve body. The adjustment of the acid concentration is based on the adjustment of the opening of the automatic regulating valve. An online acid concentration meter is installed on the pipeline after the injector, which can provide real-time feedback on the acid concentration of the regeneration liquid currently flowing. The regeneration of the anionic resin adopts alkali regeneration liquid, and the alkali raw liquid is transported by an alkali injector. The inlet of the alkali injector is also equipped with an automatic regulating valve, and the valve body also adopts a rubber-lined diaphragm valve. An alkali concentration meter is installed on the pipeline after the alkali injector, which can measure the alkali concentration of the regeneration liquid in real time.
[0036] The analog output interface of the PLC controller is connected to the automatic regulating valve installed at the acid stock liquid inlet of the acid injector and the automatic regulating valve installed at the alkali stock liquid inlet of the alkali injector, and the analog input interface of the PLC is connected to the acid concentration meter and the alkali concentration meter. In this way, the PLC controller can control the opening of the automatic regulating valve, thereby controlling the flow rate of the acid and alkali stock liquids, and finally adjusting the acid and alkali concentration of the regeneration liquid in real time. In addition, the PLC controller can read the real-time acid and alkali concentration value in the pipeline through the acid and alkali concentration meter.
[0037] When the resin is regenerated, the required acid-base concentration value is set on the touch screen, and the PLC controller reads the acid-base concentration parameter in real time. If it is less than the set value, the opening of the automatic regulating valve installed on the acid-base pipeline will be automatically increased gradually. If it is greater than the set value, the opening of the automatic regulating valve will be automatically decreased gradually. The PLC controller can accurately adjust the concentration of the regeneration liquid to the required acid-base concentration through the acid-base automatic regulating valve unit to ensure that the regeneration process is carried out under the best conditions. It can flexibly adjust the acid-base concentration of the regeneration liquid according to different regeneration tasks and material requirements to improve the regeneration pertinence and effectiveness; realize centralized control and regulation of the regeneration liquid flow automatic regulation module, the regeneration liquid acid-base concentration automatic regulation module and the regeneration liquid temperature control module, improve management efficiency, ensure coordinated operation between various modules, realize optimized control of the overall system, and improve the stability and reliability of the regeneration process.
[0038] Example 3
[0039] refer to Figure 3 The acid and alkali raw liquid delivery unit is an acid and alkali metering pump, which is electrically connected to the frequency converter equipment. The frequency converter command signal of the acid and alkali metering pump is connected to the analog output interface of the PLC controller, and the feedback signal of the frequency converter is connected to the analog input interface of the PLC controller. In addition, the online acid and alkali concentration meter is also connected to the analog input interface of the PLC controller.
[0040] When the resin is regenerated, the required acid-base concentration value can be set on the touch screen. The PLC controller reads the value of the acid-base concentration meter installed on the acid-base regeneration liquid pipeline in real time. If the current value is less than the set value, the PLC controller outputs a signal to control the frequency converter to increase the frequency, thereby increasing the acid-base metering pump, increasing the acid-base stock solution delivery flow, and ultimately increasing the acid-base concentration. If the acid-base concentration value is greater than the set value, the PLC controller reduces the speed of the acid-base metering pump through the frequency converter, reduces the supply of acid-base solution, and thus reduces the acid-base concentration.
[0041] The acid-base automatic regulating valve unit of the present application can automatically adjust the acid-base concentration of the regeneration liquid to ensure that it reaches the required acid-base concentration, which can avoid the error of manual adjustment and improve the accuracy of the acid-base concentration of the regeneration liquid. The fuzzy control algorithm is used to take the concentration deviation and the deviation change rate as input variables, which can make more intelligent reasoning decisions. This algorithm can adapt to complex working conditions and improve the accuracy and stability of control;
[0042] Accurate acid and alkali concentrations are crucial for resin regeneration. Automatic concentration adjustment can ensure that the regeneration process is carried out under optimal conditions, thereby improving regeneration effect and efficiency. Automatic concentration adjustment reduces the need for manual operation and reduces labor costs. At the same time, it also reduces concentration errors and production accidents caused by human factors. Automatic concentration adjustment can maintain the stability of the acid and alkali concentrations of the regeneration liquid and reduce the impact of concentration fluctuations on the system, which helps to improve the reliability and stability of the system.
[0043] Example 4
[0044] The regeneration liquid temperature control module includes an automatic three-way valve and a temperature transmitter. The two inlets of the automatic three-way valve are respectively connected to the cold water and hot water supply pipelines. The hot water is supplied by the electric water tank. The temperature transmitter is installed after the cold and hot water are mixed on the outlet pipeline of the three-way valve. The automatic three-way valve and the temperature transmitter are respectively connected to the analog output and input interfaces of the PLC controller. The PLC controller can control the opening of the automatic three-way valve and obtain the regeneration liquid temperature in real time by reading the temperature transmitter parameters. The automatic temperature adjustment method is as follows: the required temperature of the regeneration liquid is set on the touch screen interface connected to the PLC controller. The PLC controller measures the regeneration liquid temperature value through the temperature transmitter. When it is less than the set value, the PLC controller adjusts the opening of the automatic three-way valve, the opening of the hot water inlet increases, and the opening of the cold water inlet decreases at the same time. The water temperature rises accordingly after the cold and hot water are mixed at the outlet. When the read temperature transmitter value is greater than the set value, the automatic control device module adjusts the opening of the automatic three-way valve to reduce the opening of the hot water inlet and increase the opening of the cold water inlet. The water temperature drops after the cold and hot water are mixed at the outlet. Every time the PLC controller collects data from the temperature transmitter, it fine-tunes the opening of the automatic three-way valve based on the deviation between the data and the set value. Through continuous adjustment, the real-time temperature of the regeneration liquid will always be maintained within a very small range above and below the set value on the touch screen.
[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.
Claims
1. A fully automatic regeneration control device and control method for finely treated cation and anion resins, characterized in that: The fully automatic regeneration control device includes: a regeneration liquid flow automatic adjustment module, a regeneration liquid acid-base concentration automatic adjustment module, a regeneration liquid temperature automatic control device module and an automatic control device module; The regeneration liquid flow automatic regulation module automatically regulates the water supply flow of the regeneration liquid based on the automatic regulating valve unit, and the online flow meter provides feedback to achieve closed-loop control of the flow, ultimately keeping the regeneration liquid within the set flow range; The automatic adjustment module for acid-base concentration of the regeneration liquid adjusts the concentration of the regeneration liquid based on the acid-base supply adjustment device, and provides feedback through the online acid-base concentration meter, thereby realizing closed-loop control of the acid-base concentration of the regeneration liquid, and finally adjusting the acid-base concentration of the regeneration liquid to the set range; The regeneration liquid temperature control module is adjusted based on the opening ratio of the automatic three-way regulating valve, and the temperature of the water outlet pipe temperature sensor of the automatic three-way valve is fed back to achieve closed-loop control of the regeneration liquid temperature, and finally the regeneration liquid temperature is adjusted to the set range; The automatic control device module is electrically connected to the relevant equipment units included in the regeneration liquid flow automatic adjustment module, the regeneration liquid acid-base concentration automatic adjustment module and the regeneration liquid temperature control module, and is used to monitor and control the equipment units related to each module.
2. The fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 1, characterized in that: The regeneration liquid flow automatic regulating module comprises an automatic regulating valve unit and a flow meter unit. The automatic regulating valve unit and the flow meter unit are all installed on the regeneration liquid water pipeline. The automatic regulating valve unit and the flow meter unit are both electrically connected to the automatic control device module.
3. A fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 2, characterized in that: The automatic adjustment method of the regeneration liquid flow automatic adjustment module is as follows: the water flow required for resin regeneration is pre-set, and during the fine treatment of cation and anion resin regeneration, the automatic control device module reads the value of the flow metering unit in real time, and if the incoming water flow is less than the set value, the opening of the automatic regulating valve is automatically increased step by step. On the contrary, if the incoming water flow is greater than the set value, the opening of the incoming water automatic regulating valve is automatically decreased step by step.
4. The fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 1, characterized in that: The regeneration liquid acid-base concentration automatic adjustment module includes an acid-base stock solution delivery unit, an acid-base solution concentration automatic adjustment unit, and an online acid-base concentration meter unit. The acid-base solution delivery unit generally uses an acid-base injector or a metering pump, and the acid-base solution concentration automatic adjustment unit and the online acid-base concentration meter unit are electrically connected to the automatic control device module.
5. A fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 4, characterized in that: The acid-base solution concentration automatic regulating unit is an automatic regulating valve device installed on the inlet pipeline of the acid-base injector when the acid-base raw solution conveying unit is an acid-base injector.
6. A fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 4, characterized in that: The acid-base solution concentration automatic adjustment unit, when the acid-base raw solution delivery unit is an acid-base metering pump, is a pump speed control device such as a frequency converter electrically connected to the acid-base metering pump.
7. The fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 5, characterized in that: The regenerated acid and alkali solution concentration automatic adjustment unit adjusts the acid and alkali delivery amount based on the automatic regulating valve unit installed on the acid and alkali stock solution delivery pipeline, thereby realizing automatic adjustment of the acid and alkali concentration of the acid and alkali regeneration solution. The automatic adjustment method is as follows: when the resin is regenerated, the required acid and alkali concentration value is set on the automatic control device module, and the automatic control device module reads the parameters of the online acid and alkali concentration meter unit in real time. If the value is less than the set value, the opening of the automatic regulating valve is automatically gradually increased to increase the delivery flow of the acid and alkali stock solution, thereby increasing the acid and alkali concentration. If it is greater than the set value, the opening of the automatic regulating valve is automatically gradually reduced to reduce the delivery flow of the acid and alkali stock solution, thereby reducing the acid and alkali concentration.
8. The fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 6, characterized in that: The acid-base concentration automatic adjustment unit adjusts the acid-base delivery amount based on a pump speed control device such as a frequency converter electrically connected to the acid-base metering pump, thereby adjusting the acid-base concentration of the regeneration liquid. The automatic adjustment method is as follows: when the resin is regenerated, the required acid-base concentration value is set on the automatic control device module, and the automatic control device module reads the value of the online acid-base concentration meter unit in real time. If it is less than the set value, the speed of the acid-base metering pump is increased through the pump speed control device such as the frequency converter, and the delivery flow rate of the acid-base stock solution is increased, thereby increasing the acid-base concentration. If it is greater than the set value, the speed of the acid-base metering pump is reduced through the pump speed control device such as the frequency converter, and the supply of the acid-base solution is reduced, thereby reducing the acid-base concentration.
9. The fully automatic regeneration control device and control method for finely treated cation and anion resins according to claim 1, characterized in that: The regeneration liquid temperature control module includes an automatic three-way valve and a temperature transmitter. The automatic three-way valve has two inlets and one outlet. The two inlets can be connected to the outlet respectively, and the sum of the openings of the two inlets is 100%. The two inlets are respectively connected to the cold water delivery pipeline and the hot water delivery pipeline. The cold water directly uses the desalted water from the desalted water system tank, and the hot water is supplied after the desalted water is heated by the electric water tank. The temperature transmitter is installed on the pipeline after the cold and hot water are mixed at the outlet of the three-way valve. The automatic three-way valve and the temperature transmitter are electrically connected to the automatic control device module; the automatic temperature adjustment method is as follows: when the resin is regenerated, the temperature required for the regeneration liquid is set on the automatic control device module, and the automatic control device module reads the parameters of the temperature transmitter in real time. When the value is less than the set value, the automatic control device module adjusts the opening of the automatic three-way valve, the opening of the hot water inlet increases, the opening of the cold water inlet decreases accordingly, and the water temperature rises accordingly after the cold and hot water are mixed at the outlet. When the temperature transmitter value read is greater than the set value, the automatic control device module adjusts the opening of the three-way valve, reducing the opening of the hot water inlet and increasing the opening of the cold water inlet accordingly, and the outlet cold and hot water temperature drops after mixing.