A device and method for remote visual colorimetric verification of sodium ion exchanger effluent hardness

Abstract

This invention discloses a remote visual sodium ion exchanger effluent hardness colorimetric verification device and method. The remote visual sodium ion exchanger effluent hardness colorimetric verification device comprises a sample water adjustment and switching system, a sample water metering and mixing system, a reagent quantitative addition system, a supplementary lighting and standard colorimetric plate system, a video monitoring system, and a control system. The effective effects of this invention are: by using automated and information-based means to simulate the on-site manual testing process of effluent hardness, it replaces manual on-site operation, achieves physical isolation between operators and the risk of chemical corrosion on-site, facilitates rapid judgment of whether the hardness of the sodium ion exchanger effluent meets the standard based on the sample water color, and thus makes disposal decisions, providing technical support for "unattended operation and remote monitoring" of production operations. At the same time, it determines the optimal cleaning time endpoint for sodium ion exchanger "regeneration", reducing water consumption.

Description

Technical Field

[0001] This invention belongs to the field of water hardness monitoring technology for water treatment devices, and particularly relates to a remote visual colorimetric verification device and method for hardness of sodium ion exchanger effluent. Background Technology

[0002] The core module of the oilfield steam injection boiler feedwater treatment unit is a sodium ion exchanger, which is used for softening (hardness removal) of raw water. That is, it removes calcium and magnesium ions in the water that can form hardness to produce softened water, preventing scale buildup in boiler tubes and accidents such as "tube bursting" or "tube stacking". Sodium ion exchangers typically consist of two groups: one group (e.g., group A) is in operation, while the other group (e.g., group B) is in "regeneration" standby. They operate alternately, so the working states of a sodium ion exchanger are divided into three types: "operation," "regeneration," and "standby." Each group (e.g., group A) has two resin tanks (e.g., primary tank A1 and secondary tank A2). The primary tank A1 plays a major role in removing calcium and magnesium ions from the raw water that can form "hardness." The secondary tank acts as a safety net, preventing "hardness leakage" in the effluent. After a group (e.g., group A) has been operating for a period of time, it loses its ability to remove hardness and needs to be "regenerated." Sodium ion exchanger "regeneration" involves passing dilute brine (8-12%) through the resin layer to react with the resin particles that have lost their exchange capacity, restoring their water treatment ability. This process mainly consists of three steps: backwashing, salt inlet, and rinsing. Each step is completed automatically at a pre-set time. Currently, the hardness of the sodium ion exchanger effluent is monitored using an online hardness monitor. However, this cannot guarantee that the hardness will meet the requirements at the end of the "regeneration" cleaning process or the boiler feedwater hardness during operation. Therefore, the measures taken are to conduct regular on-site manual testing and hardness comparison verification. If the hardness test result of the sample water is a standard sky blue, it indicates that the hardness is qualified; if the hardness test result of the sample water is purple or purplish-red, it indicates that the hardness is unqualified. This indicates that the "regeneration" cleaning has not reached the end point and the cleaning time needs to be extended; or that the boiler feedwater hardness is unqualified and operation needs to be stopped, and the "standby" group needs to be used to supply water to the boiler. The daily manual on-site testing of the hardness of the sodium ion exchanger effluent poses a risk of chemical corrosion and is detrimental to occupational health. It also increases the labor intensity of employees, hinders human resource optimization, and raises labor costs for production operations. Under the current "unmanned, remotely monitored" production operation model, this has become a bottleneck to the company's information-based production. This practical problem urgently needs to be solved. If the sodium ion exchanger in the regeneration group has reached the required hardness after cleaning, but is still cleaned according to the set cleaning time, a large amount of water resources are wasted, leading to increased production costs. If the boiler feedwater hardness is not up to standard and the boiler continues to operate, it will cause scaling on the boiler tubes, resulting in accidents such as "tube rupture" and "tube stack failure." Publication No. CN114965452A discloses a machine vision detection method and device for boiler feedwater hardness. The device includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a backlight, a camera, a measuring cell, a check valve, a flow meter, a buffer solution bottle, and a colorimetric reagent bottle. This invention also proposes a method for controlling the colorimetric reaction, increasing the acquisition of information on the hardness detection colorimetric reaction process, making the evaluation indicators more comprehensive and diversified. Furthermore, this invention provides a process for extracting, regressing, and predicting boiler feedwater sample data. This invention improves the detection accuracy, anti-interference ability, and stability repeatability of the boiler feedwater hardness detection device. For the same boiler feedwater, repeated detection yields stable water hardness with small fluctuations and strong stability, reducing the likelihood of false detections. Existing technologies monitor hardness values ​​and have complex structures, failing to meet the purpose of remote visual verification of sodium ion exchanger effluent hardness colorimetrically as required by this invention. Publication No. CN117185506A discloses an intelligent control system for boiler feedwater hardness, including an inlet tank, a water processor, a water hardness detection device, an outlet tank, a control system, and a water treatment auxiliary chemical tank. The inlet tank, water processor, water hardness detection device, and outlet tank are connected in sequence. The control system and the water treatment auxiliary chemical tank are connected to the water processor. The control system is also connected to the water hardness detection device and the water treatment auxiliary chemical tank. This invention, by setting a water hardness detection device between the water processor and the outlet tank, can monitor the water hardness in real time. Furthermore, because a flow channel and an auxiliary channel are set up for the water hardness detection device, most of the water flows along the flow channel to the outlet tank during the detection process, which does not affect the normal operation of the boiler drainage. Additionally, a shaft-shaped sensor head inserted in the auxiliary channel is used to measure water hardness in real time. This prior art falls under the category of hardness control and cannot meet the requirements of this invention. CN111252853A discloses a control system and method for automatically controlling the hardness of water produced by a sodium ion exchanger. This invention belongs to the field of industrial softened water application technology. It discloses a control system and method for automatically controlling the hardness of water produced by a sodium ion exchanger. After a power outage and subsequent power restoration, the sodium ion exchanger continues to operate according to the operating steps and time before the power outage. It features a softened water storage tank level detection function; when the water level exceeds the limit, an alarm message is displayed, and the system shuts down. A hardness composite electrode is used to automatically detect the hardness of the sodium ion exchanger outlet water. Based on the detection results, a corresponding control algorithm is used to automatically adjust the operating time of the bed loosening, regeneration, and cleaning steps, ensuring that the hardness of the produced water meets the softened water hardness index and that the sodium ion exchanger operates in an economical and efficient state. This invention is applicable to sodium ion exchangers where pipeline switching for each step is achieved through multi-channel valves or solenoid valves, enabling fault detection of each solenoid valve's circuit. When a valve circuit fault occurs, the system shuts down and displays an alarm message. Existing technology involves a rigid control process for sodium ion exchangers and cannot meet the requirements of this invention. CN112305185A discloses an online monitoring system and method for feedwater hardness. The system includes a data acquisition device, a data management device, a data monitoring device, and a smart terminal. The data acquisition device collects the feedwater hardness in the boiler feedwater pipeline and transmits it to the data management device. The data management device transmits the feedwater hardness collected and transmitted by the data acquisition device to the data monitoring device. The data monitoring device determines the feedwater hardness level and sends the feedwater hardness to the smart terminal. This invention obtains the boiler feedwater hardness through the data acquisition device, uploads the feedwater hardness to the data monitoring device through the data management device, determines the boiler feedwater hardness level through the data monitoring device, and sends data information to the user's smart terminal. This enables long-distance transmission of online monitoring results and alarm signals, promptly alerting relevant personnel for handling. Existing technologies fall under the category of online feedwater hardness monitoring devices and do not meet the requirements of this invention. In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of the present invention. Regarding the more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the purpose of this invention is to provide a remote visual colorimetric verification device and method for the hardness of sodium ion exchanger effluent. To achieve the above objectives, the following technical solution is proposed: A remote visual sodium ion exchanger effluent hardness colorimetric verification device includes: a sample water switching system, a sample water metering and mixing system, a reagent quantitative addition system, a supplementary light and standard colorimetric plate system, a video monitoring system and a control system, etc. The use of automated and information-based methods to simulate the manual on-site testing of water hardness replaces manual on-site operation, achieving physical isolation between operators and the risk of chemical corrosion on-site. It facilitates quick judgment of whether the hardness of the sodium ion exchanger outlet water meets the standard based on the color of the sample water, thereby enabling decision-making. This provides technical support for "unattended operation and remote monitoring" of production operations. At the same time, it determines the optimal cleaning time endpoint for the "regeneration" of the sodium ion exchanger, reducing water consumption.

[0004] As a preferred embodiment of the above technical solution, the sample water switching system switches the four types of sample water to be monitored from the outlets of the two groups of sodium ion exchangers (A and B) through an electric regulating valve, adjusts the flow rate according to the valve opening setting, and adds 100 mL of sample water quantitatively.

[0005] As a preferred embodiment of the above technical solution, the sample water metering and mixing system, after the sample water is quantitatively added, connects to a solenoid valve via an overflow pipe located at the top of the conical flask. The overflow pipe has a diameter of 8mm and a 15-degree slope to achieve overflow, accurately measuring the amount of sample water to be monitored. After the reagent is added, a magnetic stir bar begins to stir and mix until the sample water develops color. The bottom of the conical flask has a drain solenoid valve for cleaning and drainage. The conical flask is made of custom-made crystal glass, which has high transparency, is resistant to acid, alkali, and salt corrosion, and is wear-resistant. The conical flask has a thin wall and a thicker bottom. There is a drain hole in the center of the bottom that connects to a drain pipe, which is then connected to the drain solenoid valve. The drain pipe has a diameter of 10mm and a 15-degree slope to facilitate the discharge of cleaning water and residual water. The mouth of the conical flask has a glass... The glass stopper has two holes: one for adding sample water and reagents, and the other for venting, ensuring atmospheric pressure inside the bottle and preventing negative pressure. The bottom of the conical flask is fitted with a water tray and a guide tube to prevent overflow. The magnetic stir bar inside the conical flask is driven by an external motor box that generates a magnetic field, and the stirring speed is adjustable. The conical flask and the magnetic stir bar drive motor box are placed on a component box. The conical flask is secured with a fixing arm to prevent displacement. The component box is located below the magnetic stir bar drive motor box. All components of the device, including the electric regulating valve, solenoid valve, stepper motor, peristaltic pump, reagent bottle, and latex tubing, are installed inside the component box and connected to the control system using signal cables and quick-connect plugs for easy installation and maintenance.

[0006] As a preferred embodiment of the above technical solution, the reagent quantitative addition system uses a stepper motor to drive a peristaltic pump to quantitatively add two reagents to a conical flask. The added 4 mL of buffer solution adjusts the pH of the sample water to 10 ± 0.1; the added 0.2 mL of 0.5% Chrome Black T is used for color development of the sample water; a one-way valve is installed at the suction port of the peristaltic pump that extends into the reagent bottle to prevent backflow of the reagent solution and the intake of air, ensuring reliable reagent addition.

[0007] As a preferred embodiment of the above technical solution, the supplementary light and standard colorimetric plate system automatically turns on the cold white light source supplementary light when the magnetic stir bar begins to mix. The supplementary light uses a corrugated tube bracket to facilitate adjustment of the illumination angle, making it easy for the camera to observe and compare the difference between the color of the sample water in the conical flask and the standard color of the colorimetric plate, thereby verifying whether the hardness meets the standard. The standard colorimetric plate is installed at the rear of the conical flask and fixed on the device box. The standard colorimetric plate is vertically divided into two colors: one is standard white (white, R255, G255, B255, HEX: FFFFFF) and the other is standard blue (blue, R0, G150, B250, HEX: 0095F8).

[0008] As a preferred embodiment of the above technical solution, the video monitoring system transmits video images of the sample water monitoring process and colorimetric results remotely via network cameras, facilitating remote visualization and colorimetric verification of the hardness of the sodium ion exchanger outlet water. If the sample water hardness monitoring result is a standard sky blue, it indicates that the hardness is qualified; if the sample water hardness monitoring result is purple or purplish-red, it indicates that the hardness is unqualified. This further indicates that the "regeneration" cleaning has not reached its end and the cleaning time needs to be extended; or that the boiler feedwater hardness is unqualified, requiring the operation to be stopped and the "standby" group to supply water to the boiler to prevent scale buildup on the boiler tubes and accidents such as "tube bursting" or "tube stack failure".

[0009] As a preferred embodiment of the above technical solution, the control system consists of a PLC, a touch screen, a power supply, and relays, and realizes logic control, parameter setting, operation and debugging. The PLC, touch screen, power supply, and relays are installed in an independent control box.

[0010] As a preferred embodiment of the above technical solution, a stabilizing component is installed above the magnetic stirrer. The stabilizing component includes a mounting sleeve installed above the magnetic stirrer. A column is provided at the bottom end of the mounting sleeve, and the column penetrates the magnetic stirrer. A mounting plate is fixedly installed at the bottom end of the column, and a ball bearing is embedded at the bottom end of the mounting plate. A guide groove is provided at the top end of the mounting sleeve. A telescopic component is snapped into place at the position inside the guide groove at the top end of the mounting sleeve. A centrifugal block is connected to the movable end of the telescopic component. A rack is attached to one end of the centrifugal block, and a gear is meshed with the outer side of the rack. A rotating column is fixedly connected inside the gear. Multiple racks are connected by the same synchronizing rod. A vane is fixedly installed at the end of the rotating column. A flow channel is opened on one end face of the vane. A movable plate is slidably connected inside the vane. A telescopic component is connected between the movable plate and the inner wall of the vane. A guide channel connected to the flow channel is opened inside the movable plate. A baffle is installed at the bottom end of the vane at the bottom end of the movable plate. A limiting groove is opened in the middle of the rack. A cylinder is set inside the limiting groove of the rack. The two ends of the cylinder are fixedly connected to the inner wall of the mounting sleeve. The end face of the centrifugal block near the rack is an inclined surface. An end cap is fixedly installed on the top of the mounting sleeve.

[0011] A method of using the above-mentioned remote visualization sodium ion exchanger effluent hardness colorimetric verification device includes the following steps: Automatic sampling steps: The sample water switching system is activated through the control system to quantitatively collect a predetermined volume of the sample water to be tested into the conical flask; Automatic dosing and color development steps: The reagent quantitative dosing system is activated by the control system to add a predetermined amount of pH buffer and Eriochrome Black T indicator to the conical flask in sequence. Then, the magnetic stirring system is activated to stir and mix the mixture to induce a color development reaction. Image acquisition steps: After the stirring and mixing process, turn on the supplementary light and acquire the image information of the color-developed sample water through the video monitoring system; Remote verification and decision-making steps: Compare the color of the sample water in the image information with the pre-stored standard color; If the color matches the standard sky blue, the water hardness is considered acceptable. If the color matches purple or purplish-red, the water hardness is deemed unqualified, and a control command is generated.

[0012] The beneficial effects of this invention are as follows: (1) This invention uses automated and information-based means to simulate the manual testing of water hardness on site, replacing the manual on-site operation, realizing the physical isolation of operators from the risk of chemical corrosion on site, making it easy to quickly determine whether the hardness of the sodium ion exchanger outlet water meets the standard based on the color of the sample water, thereby making disposal decisions, and providing technical support for "unmanned operation and remote monitoring" of production operation. (2) This invention uses a network camera to transmit video images of the sample water monitoring process and colorimetric results, which facilitates remote visualization and colorimetric verification of the hardness of the sodium ion exchanger outlet water; thereby determining the optimal "regeneration" cleaning endpoint time, reducing raw water consumption and production costs; at the same time, it ensures that the boiler feedwater hardness is qualified, prevents boiler tube scaling, and eliminates accidents such as "tube burst" and "tube set". (3) By introducing a stabilizing component, the problem of bouncing and deflection of the magnetic stir bar during high-speed rotation is innovatively solved. Its centrifugal adaptive adjustment mechanism ensures that the stir bar maintains a stable working state throughout the entire process from startup to high-speed operation. This enables the reagent and water sample to be fully and uniformly mixed, fundamentally eliminating problems such as incomplete colorimetric reaction and uneven color caused by uneven mixing. This provides a reliable and consistent sample source for subsequent remote colorimetric analysis, greatly improving the accuracy and reliability of the detection data. (4) By combining the camera module with a stable clamping and fixing system, continuous and automatic sampling, mixing and image acquisition under unattended operation on site are realized. Operators can observe the mixing effect and color development in real time in the remote monitoring center and make judgments. This greatly reduces the frequency of personnel going to the site for sampling, reduces labor intensity and maintenance costs, and is especially suitable for distributed sites or harsh working conditions. (5) This invention goes beyond the simple idea of ​​stability and constructs a dual mixing enhancement system that combines macroscopic and microscopic aspects. On the macroscopic level, the angle of attack of the vanes is changed by centrifugal blocks, racks and pinions, and gear transmission to optimize the main flow field. On the microscopic level, the opening of the flow channel is adjusted by moving plates to generate fine local jets and disturbances. The synergistic effect of the two achieves precise control of fluid shear force and turbulence intensity. Not only is the mixing speed faster, but the mixing uniformity is also extremely high, which is especially suitable for high-precision colorimetric analysis. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the remote visualization sodium ion exchanger effluent hardness colorimetric verification device in this invention; Figure 2 This is a schematic diagram of the structure of the remote visualization sodium ion exchanger effluent hardness colorimetric verification device in this invention; Figure 3 This is a schematic diagram of the structure of the device box, fixing arm, supplementary light, and colorimetric plate in this invention; Figure 4 This is a schematic diagram of the conical flask in this invention; Figure 5 This is a schematic diagram of the water receiving tray in this invention; Figure 6 This is a schematic diagram of the control box structure in this invention; Figure 7 This is a schematic diagram of the logic control for water hardness titration colorimetric determination in this invention; Figure 8 This is a schematic diagram of the conical flask cleaning logic control in this invention; Figure 9 The diagram shown is a structural schematic of the stabilizing component in Embodiment 1; Figure 10 The diagram shown is an internal structural diagram of the stabilizing component in Embodiment 1; Figure 11 The diagram shown is a schematic of the rack installation structure in Embodiment 1; Figure 12 The diagram shown is a schematic representation of the internal structure of the winglet in Embodiment 1. Figure 13 This is a physical image of the remote visualization sodium ion exchanger effluent hardness colorimetric verification device of the present invention.

[0014] In the diagram: 1. Raw water tank; 2. Inlet pump; 3. Group A sodium ion exchanger primary tank; 4. Group A sodium ion exchanger secondary tank; 5. Oilfield steam injection boiler; 6. Filter 1; 7. Filter 2; 8. Electric regulating valve 1; 9. Electric regulating valve 2; 10. Four-way connector; 11. Conical flask; 11-1. Conical flask stopper; 11-1-1. Inlet pipe hole; 11-1-2. Vent hole; 11-2. 100mL graduation mark; 11-3. Conical flask overflow pipe; 11-4. Conical flask drain pipe; 12. Magnetic stir bar; 13. Stirring motor box; 14. Speed ​​control knob; 15. Solenoid valve one; 16. Solenoid valve two; 17. Water tray; 17-1. Guide pipe; 18. Fixing arm; 19. Standard color gamut; 19-1. White gamut; 19-2. Sky blue gamut; 20. Supplemental light; 20-1. Corrugated pipe support frame; 21. Network 22. Camera; 23. Drainage tank; 24. Drainage pump; 25. Buffer solution bottle; 26. 0.5% Chrome Black T solution bottle; 27. Peristaltic pump one; 28. Stepper motor one; 29. ​​Peristaltic pump two; 20. Stepper motor two; 21. Component box; 32. Signal cable and quick connector; 33. Control box; 34. Check valve one; 35. Check valve two; 36. "Regeneration" cleaning drain valve; 37. Stabilizing assembly; 38. 1. Mounting sleeve; 3402. Column; 3403. Mounting plate; 3404. Ball bearing; 3405. Guide groove; 3406. Telescopic component one; 3407. Centrifugal block; 3408. Rack; 3409. Gear; 3410. Synchronizing rod; 3411. Rotating column; 3412. Blade; 3413. Flow channel; 3414. Telescopic component two; 3415. Moving plate; 3416. Baffle; 3417. End cap. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Example 1 Please see Figures 1 to 13 This embodiment provides a remote visual sodium ion exchanger effluent hardness colorimetric verification device, which includes a sample water switching system, a sample water metering and mixing system, a reagent quantitative addition system, a supplementary lighting and standard colorimetric plate system, a video monitoring system, and a control system. It uses automated and information-based means to simulate the on-site manual sample water hardness testing process, replacing manual on-site operation. It is convenient to quickly determine whether the hardness of the sodium ion exchanger effluent meets the standard by comparing the sample water color, thereby making a disposal decision.

[0017] First, the electric regulating valve 8 or the electric regulating valve 9 switches the four types of sample water to be monitored from the outlet of the sodium ion exchanger of group A or B under different operating conditions and adjusts the flow rate according to the 30% opening degree set by the valve. In 10 seconds, 100 mL of sample water can be quantitatively added to the conical flask 11 through the four-way connector 10.

[0018] The parameters of the electric regulating valve 8 and the electric regulating valve 9 are as follows: power supply DC24V, nominal diameter DN15, and engineering pressure PN0.8MPa.

[0019] Among them, the sample water pipelines at the front end of the electric regulating valve 8 and the electric regulating valve 9 are equipped with filters 6 and 7 to prevent impurities from clogging the pipelines.

[0020] Among them, the conical flask 11 is made of crystal glass, which is highly transparent, resistant to acid, alkali and salt corrosion, and wear-resistant.

[0021] The conical bottle 11 is secured by a fixing arm 18 to prevent displacement. The fixing arm 18 is bolted to the component box 28.

[0022] The conical bottle 11 has a thin wall and a thick bottom. There is a drain hole in the center of the bottom that connects to the drain pipe 11-4 and is then connected to the drain solenoid valve 16. The drain pipe 11-4 has a diameter of 10mm and a 15-degree slope to facilitate the discharge of cleaning water and residual water.

[0023] The conical flask 11 has a conical stopper 11-1 at its mouth. The conical stopper 11-1 has two holes. One is a water inlet 11-1-1, which is used to add sample water and reagents. It is connected by a four-way connector 10. The other is a vent 11-1-2, which keeps the pressure inside the flask at atmospheric pressure to prevent negative pressure from forming. The conical bottle 11 has a water receiving tray 17 and a guide pipe 17-1 at its bottom, which can prevent water from overflowing from the conical bottle 11.

[0024] The conical flask 11 has a 100mL graduation line 11-2 on its body, which is flush with the lower edge of the overflow tube 11-3 of the conical flask. The overflow tube has a diameter of 8mm and is sloped at 15 degrees to achieve overflow, accurately measuring the volume of the water sample to be monitored.

[0025] Furthermore, after 100 mL of sample water is quantitatively added to the conical flask 11, it is connected to the solenoid valve 15 through the overflow pipe 11-3 located on the body of the conical flask 11. The solenoid valve 15 opens for 5 seconds to overflow and then closes, so that 100 mL of sample water to be monitored can be accurately measured.

[0026] The conical bottle 11 is equipped with a conical bottle drain pipe 11-4 at the bottom for draining water from inside the conical bottle 11.

[0027] The parameters of solenoid valve 15 are as follows: power supply DC24V, engineering pressure PN0.8MPa, and flow diameter 8mm.

[0028] Furthermore, after the liquid surface in the conical flask 11 has been still for 3 seconds, the cold white light source supplement lamp 20 is lit to facilitate video monitoring of whether the addition of the reagent is normal and whether it is mixed and colored.

[0029] The supplementary light 20 is mounted on the top cover of the device box 28 using a corrugated pipe support frame 20-1, which facilitates adjustment of the illumination angle.

[0030] Furthermore, stepper motor 27-1 drives peristaltic pump 27, which, after 8 seconds, quantitatively adds 4 mL of buffer solution from buffer solution bottle 24 to conical flask 11, adjusting the pH of the sample water to 10±0.1.

[0031] The peristaltic pump 27, which is inserted into the buffer solution bottle 24, is equipped with a check valve 31 at its suction port to prevent backflow of the solution and air intake, thus ensuring reliable addition of the solution.

[0032] The quantitative addition of 4 mL of pH=10 buffer solution during the adjustment process is as follows: Stepper motor power supply DC24V; Peristaltic pump 27 is a 2-wheel set with a pump tube diameter of 3.5 mm and a flow rate of 0.5 mL-10 mL / s; When the flow rate is adjusted to 0.5 mL / s, peristaltic pump 27 is turned on for 8 seconds, which can inject 4 mL of buffer solution into conical flask 11 to adjust the pH value of the sample water to 10±0.1.

[0033] Furthermore, stepper motor 26-1 drives peristaltic pump 26, which, after 4 seconds, quantitatively adds 0.2 mL of 0.5% Chrome Black T from bottle 25 to conical flask 11.

[0034] The peristaltic pump 27, which is inserted into the 0.5% Chrome Black T solution bottle 25, is equipped with a check valve 32 at its suction port to prevent backflow of the solution and air intake, thus ensuring reliable addition of the drug.

[0035] The process of quantitatively adding 0.2 mL of 0.5% Chrome Black T reagent and adjusting the parameters is as follows: the stepper motor is powered by DC 24V; the peristaltic pump-26 is a 3-wheel assembly with a pump tube diameter of 2 mm and a flow rate of 0.05 mL-5 mL / s; when the flow rate is adjusted to 0.05 mL / s, the peristaltic pump-26 is turned on for 4 seconds, which will inject 0.2 mL of 0.5% Chrome Black T reagent into the conical flask 11.

[0036] Furthermore, the magnetic stir bar 12 placed at the bottom of the conical flask 11 rotates with the help of the magnetic field generated by the stirring motor box 13 placed on the device box 28, and the sample water and medicine solution can be mixed and colored in 15 seconds and then stand still.

[0037] Among them, the magnetic stir bar 12 is cylindrical, with a diameter of 8mm and a length of 30mm.

[0038] The parameters of the magnetic stir bar 12 and the stirring motor box 13 are as follows: DC24V power supply for the drive motor, speed 100-2000 rpm, and magnetic force range 15-50 mm. When the drive motor speed is set to 300 rpm, the sample water and the drug solution can be mixed and color developed in 15 seconds.

[0039] The stirring motor box 13 that generates the magnetic field can adjust the speed of the magnetic stir bar 12 via the speed control knob 14.

[0040] Among them, the component box 28 is an independent box, which contains an electric regulating valve 1 8, an electric regulating valve 2 9, a solenoid valve 1 15, a solenoid valve 2 16, a peristaltic pump 1 26 and its stepper motor 1 26-1, a peristaltic pump 2 27 and its stepper motor 2 27-1, a buffer solution bottle 24, a 0.5% chrome black T solution bottle 25, latex tubing, etc. It is connected to the control box 30 using a signal cable and a quick connector 29 for easy installation and maintenance.

[0041] Furthermore, since the supplementary light 20 is always on, the network camera 21 can observe and compare the difference between the color of the sample water in the conical flask 11 and the standard colorimetric plate 19, thereby verifying whether the hardness meets the standard.

[0042] The standard colorimetric plate 19 is installed at the rear of the conical flask 11 and fixed on the device box 28.

[0043] The standard color chart 19 is vertically divided into two colors: standard white (RGB: 255, 255, 255; HEX: FFFFFF) and standard sky blue (RGB: 0, 128, 255; HEX: 0080FF). Both colors are standard colors, which facilitates comparison of the color of the sample water in the conical flask 11.

[0044] Furthermore, the video monitoring system uses network cameras 21 to remotely transmit video images of the sample water monitoring process and colorimetric results, facilitating remote visualization and colorimetric verification of the hardness of the sodium ion exchanger outlet water. If the sample water hardness monitoring result is a standard sky blue, it indicates that the hardness is qualified; if the sample water hardness monitoring result is purple or purplish-red, it indicates that the hardness is unqualified. This further indicates that the "regeneration" cleaning has not reached its end and the cleaning time needs to be extended; or that the boiler feedwater hardness is unqualified, requiring the operation to be stopped and the "standby" group to supply water to the boiler to prevent scale buildup on the boiler tubes and accidents such as "tube bursts" or "tube failures".

[0045] Furthermore, the control system consists of a PLC, a touch screen, a power supply, and relays, which realize logic control, parameter setting, operation and debugging. The PLC, touch screen, power supply, and relays are installed in an independent control box 30.

[0046] Furthermore, a stabilizing component 34 is installed above the magnetic stir bar 12. The stabilizing component 34 includes a mounting sleeve 3401 installed above the magnetic stir bar 12. A column 3402 is provided at the bottom end of the mounting sleeve 3401, and the column 3402 penetrates the magnetic stir bar 12. A mounting plate 3403 is fixedly installed at the bottom end of the column 3402, and a ball bearing 3404 is embedded at the bottom end of the mounting plate 3403. In use, the magnetic stir bar 12 drives the ball bearing 3404 to rotate inside the container 6 via the column 3402 and the mounting plate 3403, thereby reducing the rotational friction of the magnetic stir bar 12 and improving the rotational efficiency of the magnetic stir bar 12. Specifically, the magnetic stirrer 12 has a positioning hole inside, and a column 3402 is connected through the positioning hole. A mounting plate 3403 is installed at the bottom of the column 3402 by screws. Multiple balls 3404 are embedded at the bottom of the mounting plate 3403. A mounting sleeve 3401 is integrally formed at the top of the column 3402. Furthermore, in order to increase the centrifugal force of the magnetic stirrer 12 and provide adaptive downward pressure, the following solution is provided: a guide groove 3405 is provided at the top of the mounting sleeve 3401, and a telescopic component 3406 is snapped onto the top of the mounting sleeve 3401 at the position inside the guide groove 3405. The movable end of the telescopic component 3406 is connected to a centrifugal block 3407, and a rack 3408 is attached to one end of the centrifugal block 3407. A gear 3409 is meshed on the outside of the rack 3408, and a rotating column 3411 is fixedly connected inside the gear 3409. The same synchronizing rod 3410 is connected between multiple racks 3408, and a blade 3412 is fixedly installed at the end of the rotating column 3411. In use, the magnetic stirrer 12 rotates, and the rotation of the magnetic stirrer 12 pushes the centrifugal block 3407 to move through centrifugal force. When the centrifugal block 3407 moves, it drives the telescopic component 3406 to stretch. When the centrifugal block 3407 moves, it drives the rack 3408 to move downward. When the rack 3408 moves downward, it drives multiple racks 3408 to move simultaneously through the action of the synchronizing rod 3410. When the rack 3408 moves, it drives the gear 3409 to rotate. When the gear 3409 rotates, it drives the rotating column 3411 to rotate. When the rotating column 3411 rotates, it drives the angle of the vane 3412 to be adjusted. Specifically, the top of the mounting sleeve 3401 has a guide groove 3405, and there are four guide grooves 3405 arranged around the circumference of the mounting sleeve 3401. A telescopic component 3406 (specifically a spring telescopic rod) is snapped into place at the top of the mounting sleeve 3401 inside the guide groove 3405. A centrifugal block 3407 is connected to the movable end of the telescopic component 3406. A rack 3408 is attached to one end of the centrifugal block 3407. The end face of the centrifugal block 3407 near the rack 3408 is inclined, which facilitates the movement of the rack 3408. A gear is meshed with the outer side of the rack 3408. 3409, a rotating column 3411 is connected inside the gear 3409 by an interference fit, multiple racks 3408 are connected by the same synchronizing rod 3410, a wing 3412 is fixedly installed at the end of the rotating column 3411 by screws, an end cap 3417 is fixedly installed at the top of the mounting sleeve 3401 to protect the top of the mounting sleeve 3401, a limit groove is opened in the middle of the rack 3408, a cylinder is set inside the limit groove of the rack 3408, the two ends of the cylinder are fixedly connected to the inner wall of the mounting sleeve 3401 to limit the movement of the rack 3408 and prevent the position of the rack 3408 from being offset; Furthermore, to increase the downward pressure and mixing effect of the magnetic stirrer 12, the following solution is provided: a flow channel 3413 is opened on one end face of the vane 3412, a movable plate 3415 is slidably connected inside the vane 3412, a telescopic component 3414 is connected between the movable plate 3415 and the inner wall of the vane 3412, a guide channel connected to the flow channel 3413 is opened inside the movable plate 3415, and a baffle 3416 is installed at the bottom end of the vane 3412 at the bottom end position of the movable plate 3415; In use, the vane 3412 rotates to its maximum angle by centrifugal force. At this time, the moving plate 3415 moves under the action of centrifugal force. When the moving plate 3415 moves, it drives the telescopic component 3414 to stretch, so that the guide channel and the flow channel 3413 inside the moving plate 3415 are more aligned. At this time, the liquid flows along the flow channel 3413 and the inside of the guide channel, realizing precise control of the fluid throughput and further enhancing the mixing effect and downforce. Specifically, flow channels 3413 are equidistantly opened on one end face of the vane 3412, and a cavity is opened inside the vane 3412. A movable plate 3415 is slidably connected inside the cavity of the vane 3412. A telescopic component 3414 (specifically a spring rod) is connected between the movable plate 3415 and the inner wall of the vane 3412. A guide channel connected to the flow channel 3413 is opened inside the movable plate 3415, and a baffle 3416 is installed at the bottom end of the vane 3412 at the bottom end position of the movable plate 3415.

[0047] Example 2: Based on Example 1, this example provides the cleaning process for the conical flask 11 of the present invention, and the standby actions after cleaning the conical flask include the following steps: This process can be performed once the water hardness colorimetric monitoring is completed, in preparation for the next test.

[0048] First, after the remote "conical flask cleaning and standby" command is issued, the supplementary light 20 is turned off.

[0049] Furthermore, the conical bottle 11 drain solenoid valve 2 16 opens for 10 seconds to drain the residual water, and then closes.

[0050] The conical bottle 11 has a thin wall and a thick bottom. There is a drain hole in the center of the bottom that connects to the drain pipe 11-4 and is then connected to the drain solenoid valve 16. The drain pipe 11-4 has a diameter of 10mm and a 15-degree slope to facilitate the discharge of cleaning water and residual water.

[0051] The parameters of solenoid valve 216 are: power supply DC24V, engineering pressure PN0.8MPa, and flow diameter 10mm. Testing showed that it can completely drain residual water from the conical flask in 10 seconds.

[0052] Furthermore, the electric regulating valve 8 or electric regulating valve 9, used to control the secondary outlet sample water of group A or group B in the operation state of the sodium ion exchanger, adjusts the flow rate according to the 30% opening set by the valve, and can quantitatively add 150mL of sample water to the conical flask 11 through the four-way connector 10 for rinsing in 15s.

[0053] Furthermore, the magnetic stir bar 12 rotates for 10 seconds to clean the conical flask 11.

[0054] Furthermore, the conical bottle 11 drain solenoid valve 2 16 opens for 15 seconds to drain the cleaning water.

[0055] Furthermore, repeat the above actions and steps to clean the conical flask three times, so that the conical flask 11 is ready for use.

[0056] The drainage tank 22 is used to collect the water discharged through solenoid valve 15 and solenoid valve 26, and then discharge it through the drainage pump 23.

[0057] Example 3: Based on Example 1, this example provides a colorimetric process for monitoring and verifying the hardness of feedwater in a steam injection boiler, including the following steps: Assuming that sodium ion exchanger group A is in operation supplying softened water to the boiler, and sodium ion exchanger group B is in standby mode, the raw water in raw water tank 1 is pressurized by inlet pump 2 and passes through the primary tank 3 and secondary tank 4 of sodium ion exchanger group A in sequence to produce softened water for supply to the oilfield steam injection boiler 5.

[0058] The first step is to remotely issue the command "monitor the hardness of softened water in the secondary outlet of Group A", and then the electric regulating valve 8 opens for 10 seconds to add 100 mL of sample water to the conical flask 11 through the four-way connector 10.

[0059] Furthermore, after 100 mL of sample water is quantitatively added to the conical flask 11, it is connected to the solenoid valve 15 through the overflow pipe 11-3 located on the body of the conical flask 11. The solenoid valve 15 opens for 5 seconds to overflow and then closes, so that the amount of sample water to be monitored can be accurately measured.

[0060] Furthermore, after the liquid surface in the conical flask 11 has been still for 3 seconds, the cold white light source supplement lamp 20 is lit to facilitate video monitoring of whether the addition of the reagent is normal and whether it is mixed and colored.

[0061] Furthermore, stepper motor 27-1 drives peristaltic pump 27, which, after 8 seconds, quantitatively adds 4 mL of buffer solution from buffer solution bottle 24 to conical flask 11, adjusting the pH of the sample water to 10±0.1.

[0062] Furthermore, stepper motor 26-1 drives peristaltic pump 26, which, after 4 seconds, quantitatively adds 0.2 mL of 0.5% Chrome Black T from bottle 25 to conical flask 11.

[0063] Furthermore, the magnetic stir bar 12 placed at the bottom of the conical flask 11 rotates with the help of the magnetic field generated by the stirring motor box 13 placed on the device box 28, and can mix the sample water and medicine solution and develop color in 15 seconds, and then stand still.

[0064] Furthermore, since the supplementary light 20 is always on, the network camera 21 can observe and compare the difference between the color of the sample water in the conical flask 11 and the standard colorimetric plate 19, thereby verifying whether the hardness meets the standard.

[0065] Furthermore, the video monitoring system uses network cameras 21 to remotely transmit video images of the sample water monitoring process and colorimetric results, facilitating remote visualization and colorimetric verification of the hardness of the sodium ion exchanger outlet water. If the sample water hardness monitoring result is a standard sky blue, it indicates that the hardness is qualified; if the sample water hardness monitoring result is purple or purplish-red, it indicates that the hardness is unqualified. This further indicates that the boiler supply water hardness is unqualified, and the boiler needs to be shut down and switched to the "standby" group to supply water to the boiler, preventing scale buildup on the boiler tubes and accidents such as "tube bursts" or "tube stack failures".

[0066] Example 4: Based on Examples 1 and 3, this example provides a process for monitoring and verifying the hardness of the secondary outlet water sample from a colorimetric sodium ion exchanger during the cleaning step in the "regeneration" state of the exchanger, including the following steps: Assuming that sodium ion exchanger group B is in operation and sodium ion exchanger group A is in "regeneration" mode, monitoring can be performed when the set time for the "cleaning" step is about to end. At this time, the raw water in raw water tank 1 is pressurized by inlet pump 2 and passes through the primary tank 3 and secondary tank 4 of sodium ion exchanger group A in sequence to clean and exchange calcium and magnesium metal ions. The resulting wastewater is discharged through the "regeneration" cleaning drain valve 33.

[0067] The first step is to remotely issue the command "monitor the hardness of the secondary outlet water sample of Group A", and then the electric regulating valve 8 opens for 10 seconds to add 100 mL of sample water to the conical flask 11 through the four-way connector 10.

[0068] Furthermore, after 100 mL of sample water is quantitatively added to the conical flask 11, it is connected to the solenoid valve 15 through the overflow pipe 11-3 located on the body of the conical flask 11. The solenoid valve 15 opens for 5 seconds to overflow and then closes, so that the amount of sample water to be monitored can be accurately measured.

[0069] Furthermore, after the liquid surface in the conical flask 11 has been still for 3 seconds, the cold white light source supplement lamp 20 is lit to facilitate video monitoring of whether the addition of the reagent is normal and whether it is mixed and colored.

[0070] Furthermore, stepper motor 27-1 drives peristaltic pump 27, which, after 8 seconds, quantitatively adds 4 mL of buffer solution from buffer solution bottle 24 to conical flask 11, adjusting the pH of the sample water to 10±0.1.

[0071] Furthermore, stepper motor 26-1 drives peristaltic pump 26, which, after 4 seconds, quantitatively adds 0.2 mL of 0.5% Chrome Black T from bottle 25 to conical flask 11.

[0072] Furthermore, the magnetic stir bar 12 placed at the bottom of the conical flask 11 rotates with the help of the magnetic field generated by the stirring motor box 13 placed on the device box 28, and can mix the sample water and medicine solution and develop color in 15 seconds, and then stand still.

[0073] Furthermore, since the supplementary light 20 is always on, the network camera 21 can observe and compare the difference between the color of the sample water in the conical flask 11 and the standard colorimetric plate 19, thereby verifying whether the hardness meets the standard.

[0074] Furthermore, the video monitoring system uses network cameras 21 to remotely transmit video images of the sample water monitoring process and colorimetric results, facilitating remote visualization and colorimetric verification of the hardness of the sodium ion exchanger effluent. If the sample water hardness monitoring result is a standard sky blue, it indicates that the hardness is qualified, meaning that the "regeneration" cleaning has reached its endpoint and can be stopped to reduce water waste. The cleaning time should also be reduced. If the sample water hardness monitoring result is purple or purplish-red, it indicates that the hardness is unqualified, meaning that the "regeneration" cleaning has not reached its endpoint and the cleaning time needs to be extended.

[0075] A method of using the above-mentioned remote visualization sodium ion exchanger effluent hardness colorimetric verification device includes the following steps: Automatic sampling steps: The sample water switching system is activated through the control system to quantitatively collect a predetermined volume of the sample water to be tested into the conical flask; Automatic dosing and color development steps: The reagent quantitative dosing system is started by the control system, and the predetermined amount of pH buffer and Eriochrome Black T indicator are added to the conical flask in sequence. Then the magnetic stirring system is started to stir and mix the mixture to make a color development reaction. Image acquisition steps: After the mixing process, turn on the supplementary light 20 and acquire the image information of the color-developed sample water through the video monitoring system; Remote verification and decision-making steps: Compare the color of the sample water in the image information with the pre-stored standard color; If the color matches the standard sky blue, the water hardness is considered acceptable. If the color matches purple or purplish-red, the water hardness is deemed unqualified, and a control command is generated.

[0076] ①This standard specifies the use of EDTA titration to determine the total amount of calcium and magnesium in groundwater and surface water. This method is not applicable to water with high salinity, such as seawater. The minimum concentration that can be determined by this method is 0.05 mmol / L. ② Under pH 10 conditions, calcium and magnesium ions are titrated with EDTA solution using complexation, with Eriochrome Black T as an indicator. The EDTA solution reacts with calcium and magnesium to form a purple-red or purple solution. During the titration, the free calcium and magnesium ions react with EDTA first, and the calcium and magnesium ions complexed with the indicator then react with EDTA. At the endpoint, the color of the solution changes from purple to sky blue. ③ Buffer solution (pH 10) Weigh 1.25g of magnesium disodium EDTA (C10H12N2O8Na2Mg) and 16.9g of ammonium chloride (NH4Cl), dissolve them in 143ml of concentrated ammonia water (NH3·H2O), and dilute with water to 250ml; ④ Chrome Black T Indicator Dissolve 0.5g of Chrome Black T [HOC10H6N:N10H4(OH)(NO2)SO3Na, also known as Mordant Black 11, scientific name: sodium salt of 1-(1-hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonicacid] in 100ml of triethanolamine [N(CH2CH20H)3]. Up to 25ml of ethanol can be used instead of triethanolamine to reduce the viscosity of the solution. Store in a brown bottle. Alternatively, prepare Chrome Black T indicator powder by weighing 0.5g of Chrome Black T and mixing it thoroughly with 100g of sodium chloride (NaCl, GB1266-77), grinding it, passing it through a 40-50 mesh, and storing it in a brown bottle, tightly sealing it. ⑤ Measurement Pipette 100 ml of the sample into a 250 ml Erlenmeyer flask, add 4 ml of buffer solution (3.1) and 3-4 drops of Eriochrome Black T indicator solution or 50-100 mg of indicator powder. The solution should be purplish-red or purple at this point, and its pH value should be 10.0 ± 0.1. To prevent precipitation, immediately add disodium EDTA solution from the burette while shaking continuously. The titration speed should be slightly faster at the beginning and slightly slower near the endpoint, with thorough shaking. It is best to wait 2-3 seconds between each drop. The color of the solution will gradually change from purplish-red or purple to blue. The endpoint is when the last drop of purple hue disappears and sky blue just appears. The entire titration process should be completed within 5 minutes. Record the volume of disodium EDTA solution consumed in milliliters. Hardness calculation Since this invention only uses whether the color of the sample water is sky blue as a criterion for judging whether the hardness is qualified, hardness calculation is not required; Colorimetric verification To verify whether the hardness meets the standard, the color difference between the sample water in the conical flask and the standard color on the colorimetric chart was observed and compared. A standard colorimetric chart 19 was designed, vertically divided into two equal colors: a standard white colorimetric chart 19-1 (RGB: 255, 255, 255; HEX: FFFFFF) and a standard sky blue colorimetric chart 19-2 (RGB: 0, 128, 255; HEX: 0080FF). If the sample water hardness monitoring result is the standard sky blue, the hardness is considered acceptable; if the sample water hardness monitoring result is purple or purplish-red, the hardness is considered unacceptable; both require decision-making and action. Quantitative addition of 100 mL of sample water for conditioning process ①This invention relates to the parameters of an electric regulating valve: power supply DC24V, nominal diameter DN15, and engineering pressure PN0.8MPa; When the electric regulating valve is adjusted to 30%, 100 mL of sample water can be injected into the conical flask in 10 seconds. ②Verification method: Use a 100mL graduated cylinder for verification, with an accuracy of 1mL; Quantitative addition of 150 mL of sample water for conditioning process ①This invention relates to the parameters of an electric regulating valve: power supply DC24V, nominal diameter DN15, and engineering pressure PN0.8MPa; When the electric regulating valve is adjusted to 30%, 150 mL of sample water can be injected into the conical flask in 15 seconds. ②Verification method: A 250mL graduated cylinder was used for verification, with an accuracy of 5mL; The parameters of the solenoid valve 15 selected in this invention are: power supply DC24V, engineering pressure PN0.8MPa, and flow diameter 8mm. The parameters of the solenoid valve selected in this invention are: power supply DC24V, engineering pressure PN0.8MPa, and flow diameter 10mm. Mixing sample water and reagent solution and color development process ① Parameters of the magnetic stir bar and drive motor box selected in this invention: The magnetic stir bar is cylindrical, with a diameter of 8mm and a length of 30mm; the drive motor has a power supply of DC24V, a speed of 100-2000 rpm, and a magnetic force range of 15-50mm; ②When the drive motor speed is set to 300 rpm, the sample water and medicine solution can be mixed and the color developed in 15 seconds; Quantitative addition of 4 mL of pH=10 buffer solution for reagent preparation process ① The parameters of the stepper motor and peristaltic pump selected in this invention are: power supply DC24V; peristaltic pump 2 is a 2-wheel set, pump tube diameter 3.5mm, flow rate 0.5mL-10mL / s; When the flow rate is adjusted to 0.5 mL / s, the peristaltic pump is turned on for 8 seconds, and 4 mL of buffer solution is injected into the cone to adjust the pH of the sample water to 10 ± 0.1. ②Verification method: A 5mL graduated cylinder was used for verification, with an accuracy of 0.1mL; Quantitative addition of 0.2 mL of 0.5% Chrome Black T reagent during the preparation process. ① The parameters of the stepper motor and peristaltic pump selected in this invention are: power supply DC24V, peristaltic pump 1 is a 3-wheel group, pump tube diameter 2mm, flow rate 0.05mL-5mL / s; When the flow rate is adjusted to 0.05 mL / s, the peristaltic pump is turned on for 4 seconds, and 0.2 mL of 0.5% Chrome Black T reagent can be injected into the conical flask. ②Verification Method 1: Use a 5mL graduated cylinder for verification, with an accuracy of 0.1mL; ③Verification Method 2: Based on the titration standard of 20 drops / mL (i.e., 0.05mL / drop), use a stopwatch to observe and count; 4 drops (i.e., 0.2mL) of the drug solution can be added in 4 seconds.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A remote visual colorimetric verification device for the hardness of sodium ion exchanger effluent, characterized in that, include: The system comprises a sample water switching system, a sample water metering and mixing system, a reagent quantitative addition system, a supplementary lighting and standard colorimetric plate system, a video monitoring system, and a control system. The sample water switching system and the reagent quantitative addition system simultaneously add raw materials into the sample water metering and mixing system, and the two raw materials are mixed by the sample water metering and mixing system. The mixed raw materials are compared by the supplementary lighting and standard colorimetric plate system, and the comparison data is captured and transmitted by the video monitoring and control system.

2. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 1, wherein the sample water switching system includes a raw water tank, an inlet pump, a primary tank of a group A sodium ion exchanger, a secondary tank of a group A sodium ion exchanger, an oilfield steam injection boiler, a filter one, a filter two, an electric regulating valve one, an electric regulating valve two, and a four-way connector; the outlet of the raw water tank is connected to the inlet pump, the outlet of the inlet pump is connected to the primary tank of a group A sodium ion exchanger, the outlet of the primary tank of a group A sodium ion exchanger is connected to the secondary tank of a group A sodium ion exchanger, and the outlet of the secondary tank of a group A sodium ion exchanger is connected via a pipeline. A steam injection boiler for an oilfield is connected. A "regeneration" cleaning drain valve is connected to the outside of the pipeline between the secondary tank of the sodium ion exchanger (Group A) and the steam injection boiler. A filter one is connected to the pipeline between the secondary tank of the sodium ion exchanger (Group A) and the steam injection boiler. A filter two is connected to the outside of the pipeline between the secondary tank of the sodium ion exchanger (Group A) and the steam injection boiler, located on one side of the filter one. One end of the filter two is connected to an electric regulating valve two via a pipeline. One end of the filter two is connected to an electric regulating valve one via a pipeline. The discharge ends of the electric regulating valve one and the electric regulating valve two are connected to a four-way connector via a pipeline.

3. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 2, characterized in that, The sample water metering and mixing system includes: a conical flask, a conical flask stopper, an inlet pipe, a vent, a 100mL graduation mark, a conical flask overflow pipe, a conical flask drain pipe, a magnetic stir bar, a stirring motor housing, a speed control knob, a water receiving tray, a guide pipe, a fixing arm, a drain tank, and a drain pump. The conical flask stopper is connected to the outlet pipe of a four-way connector. An inlet pipe is located at the top of the conical flask stopper, and the outlet pipe of the four-way connector is located inside the inlet pipe. A vent is located on one side of the top of the conical flask stopper. A conical flask is fitted over the conical flask stopper, and a 100mL graduation mark is provided on the outer surface of the conical flask. The conical bottle has an overflow pipe at the top of the stopper, a solenoid valve connected to one end of the overflow pipe, a drain pipe connected to the bottom of the outer side of the conical bottle, a solenoid valve connected to one end of the drain pipe, a drain tank connected to both solenoid valves, a drain pump connected to one end of the drain tank via a pipe, a magnetic stir bar inside the conical bottle, a stirring motor box at the bottom of the conical bottle, a speed control knob at one end of the stirring motor box, a water tray at the bottom of the conical bottle, a guide pipe at the bottom of the water tray, and a fixing arm on the outer side of the conical bottle.

4. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 3, characterized in that, The drug dispensing system includes a buffer solution bottle, a 0.5% Chrome Black T solution bottle, a peristaltic pump I, a peristaltic pump II, a stepper motor I, and a stepper motor II. The other two inlets of the four-way connector are respectively connected to peristaltic pump I and peristaltic pump II via pipes. Peristaltic pump I and peristaltic pump II are respectively connected to check valve I and check valve II via pipes. A buffer solution bottle is located outside check valve I, and a 0.5% Chrome Black T solution bottle is located outside check valve II. Stepper motor I is connected to the drive end of peristaltic pump I, and stepper motor II is connected to the drive end of peristaltic pump II.

5. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 4, characterized in that, The supplementary lighting and standard colorimetric plate system includes a standard colorimetric plate, a white colorimetric plate, a sky blue colorimetric plate, a supplementary lighting, a corrugated pipe support frame, and a network camera. The standard colorimetric plate is positioned above the water tray on one side of the conical flask. One end of the standard colorimetric plate has a white colorimetric plate, and the other end, near the white colorimetric plate, has a sky blue colorimetric plate. A corrugated pipe support frame is positioned on one side of the water tray, and a supplementary lighting is positioned on one side of the corrugated pipe support frame. A network camera is positioned above the water tray on one side of the standard colorimetric plate.

6. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 5, characterized in that, The video monitoring system and control system include a component box, signal cables and quick-connect plugs, and a control box; the component box is located below the stirring motor box, one end of which is embedded with a signal cable, and the other end of the signal cable is connected to the control box.

7. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 6, characterized in that, The control system consists of a PLC, a touch screen, a power supply, and relays.

8. The remote visual sodium ion exchanger effluent hardness colorimetric verification device according to claim 7, characterized in that, A stabilizing component is installed above the magnetic stirrer. The stabilizing component includes a mounting sleeve mounted above the magnetic stirrer. A column is provided at the bottom of the mounting sleeve, penetrating the magnetic stirrer. A mounting plate is fixedly installed at the bottom of the column, and a ball bearing is embedded at the bottom of the mounting plate. A guide groove is provided at the top of the mounting sleeve. A telescopic component is snapped into place at the position inside the guide groove at the top of the mounting sleeve. A centrifugal block is connected to the movable end of the telescopic component. A rack is fitted to one end of the centrifugal block, and a gear is meshed with the outer side of the rack. A rotating column is fixedly connected inside the gear. Multiple racks... The rotating column is connected by the same synchronous rod. A blade is fixedly installed at the end of the rotating column. A flow channel is opened on one end face of the blade. A movable plate is slidably connected inside the blade. A telescopic component is connected between the movable plate and the inner wall of the blade. A guide channel connected to the flow channel is opened inside the movable plate. A baffle is installed at the bottom end of the blade at the bottom end of the movable plate. A limit groove is opened in the middle of the rack. A cylinder is set inside the limit groove of the rack. The two ends of the cylinder are fixedly connected to the inner wall of the mounting sleeve. The end face of the centrifugal block near the rack is an inclined surface. An end cap is fixedly installed on the top of the mounting sleeve.

9. A method of using the remote visualization sodium ion exchanger effluent hardness colorimetric verification device according to claim 8, characterized in that, Includes the following steps: Automatic sampling steps: The sample water switching system is activated through the control system to quantitatively collect a predetermined volume of the sample water to be tested into the conical flask; Automatic dosing and color development steps: The reagent quantitative dosing system is activated by the control system to add a predetermined amount of pH buffer and Eriochrome Black T indicator to the conical flask in sequence. Then, the magnetic stirring system is activated to stir and mix the mixture to induce a color development reaction. Image acquisition steps: After the stirring and mixing process, turn on the supplementary light and acquire the image information of the color-developed sample water through the video monitoring system; Remote verification and decision-making steps: Compare the color of the sample water in the image information with the pre-stored standard color; If the color matches the standard sky blue, the water hardness is considered acceptable. If the color matches purple or purplish-red, the water hardness is deemed unqualified, and a control command is generated.

Images