Operation health degree monitoring method and system based on fine treatment mixed bed resin tracking

Abstract

The invention relates to the technical field of generator set mixed bed operation monitoring, and discloses an operation health degree monitoring method and system based on fine treatment mixed bed resin tracking, the monitoring system comprises a sampling tube, a sampling electric valve, a sampling isolation valve, a cation resin column, a conductivity meter, a mixed bed failure monitoring device and a resin regeneration system; the sampling pipe extends into the central axis of the fine treatment mixed bed; a plurality of sampling pipes are arranged along the height direction of the fine treatment mixed bed, are sequentially connected with a sampling electric valve and a sampling isolation valve, and then are connected in series to one end of a cation resin column; the other end of the cation resin column is connected with the conductivity meter; the mixed bed failure monitoring device is electrically connected with the sampling electric valve, the sampling isolation valve and the conductivity meter; and the resin regeneration system is connected with a water inlet pipeline and a water outlet pipeline of the fine treatment mixed bed through a fine treatment mixed bed resin inlet valve and a fine treatment mixed bed resin outlet valve respectively. Health degree monitoring is realized by establishing a layered monitoring system, and long-term stability of water quality of a power plant system is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of mixed bed operation monitoring technology for generator sets, specifically to a method and system for monitoring the operational health of mixed bed resin based on fine-processed resin tracking. Background Technology

[0002] In the water treatment system of thermal power plants, the fine-treatment mixed bed is a key device for condensate purification, and its operating status directly affects the water and steam quality of the unit. Currently, the industry generally uses online instruments at the outlet (including conductivity meters, hydrogen conductivity meters, and sodium meters) for failure determination. When the monitored value exceeds a set threshold (e.g., hydrogen conductivity > 0.15 μS / cm), the mixed bed is judged to have failed. This monitoring method has obvious limitations: First, the judgment mechanism based on a single-point threshold cannot capture the gradual decline trend of resin performance, resulting in the inability to predict the failure window period, affecting preparations such as regeneration reagent preparation and demineralized water storage; second, the lag in failure endpoint control may cause impurity ions to penetrate, thereby threatening the chemical stability of the water and steam system.

[0003] Modern large-scale units are typically equipped with three mixed beds operating in parallel. Due to inherent characteristics such as resin loading deviations (±3-5%) and differences in water distribution uniformity among the individual devices, their ion exchange efficiency decay curves are often asynchronous. This inconsistent operating state makes it difficult for maintenance personnel to accurately determine the overall operating condition of the multi-mixed bed system in the plant through scattered monitoring data. This increases the difficulty of deciding on the timing of regeneration and raises the risk of water quality exceeding standards due to misjudgment. Summary of the Invention

[0004] To address existing problems, this invention aims to provide a method and system for monitoring operational health based on fine treatment mixed bed resin tracking. By establishing a hierarchical monitoring system, health monitoring is achieved, enabling situational awareness of fine treatment mixed bed failures and ensuring the long-term stability of water quality in power plant systems.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] This invention provides a method and system for monitoring the operational health of a mixed bed based on resin tracking in a fine-treatment system. The system includes sampling tubes, a sampling electric valve, a sampling isolation valve, a cation exchange resin column, a conductivity meter, a mixed bed failure monitoring device, and a resin regeneration system. The sampling tubes extend into the central axis of the fine-treatment mixed bed. Multiple sampling tubes are arranged along the height of the fine-treatment mixed bed and are sequentially connected to the sampling electric valve and the sampling isolation valve before being connected in series to one end of the cation exchange resin column. The other end of the cation exchange resin column is connected to the conductivity meter. The mixed bed failure monitoring device is electrically connected to the sampling electric valve, the sampling isolation valve, and the conductivity meter. The resin regeneration system is connected to the fine-treatment mixed bed inlet and outlet water pipes via the fine-treatment mixed bed inlet resin valve and the fine-treatment mixed bed outlet resin valve, respectively.

[0007] As a further improvement of the present invention, the resin regeneration system includes a separation tower, a regeneration tower, a transfer pump, and a PLC module; the PLC module uses an algorithm based on modeling the change slope of sodium ion leakage rate and conductivity.

[0008] As a further improvement of the present invention, the sampling tubes are arranged at equal intervals in the height direction of the fine treatment mixed bed.

[0009] As a further improvement of the present invention, the sampling tube is made of 316L stainless steel. As a further improvement of the present invention, the sampling tube is provided with an anti-clogging filter at the tube end.

[0010] As a further improvement of the present invention, both the resin inlet valve and the resin outlet valve of the fine treatment mixed bed are pneumatic fluoropolymer-lined butterfly valves.

[0011] As a further improvement of the present invention, the limit value S of the hydrogen conductivity detection result of the conductivity meter is 0.10-0.15 μS / cm.

[0012] As a further improvement of the present invention, the height difference h between two adjacent sampling tubes is set to 10-30cm.

[0013] This invention also discloses a monitoring method for an operational health monitoring system based on fine treatment mixed bed resin tracking, comprising the following steps: opening the uppermost sampling electric valve and the corresponding sampling isolation valve, monitoring the effluent water quality of the layer where the corresponding sampling pipe is located, and when the conductivity meter reading is greater than a set value S, indicating that the uppermost resin has failed, the mixed bed failure monitoring device controls the closure of the uppermost sampling electric valve and opens the sampling electric valve and the corresponding sampling isolation valve of the adjacent lower layer; the mixed bed failure monitoring device determines the location of the failed resin layer based on the water quality test results. Position, sequentially close the sampling electric valve and sampling isolation valve corresponding to the failed resin layer, and open the sampling electric valve and sampling isolation valve of the next layer; if the mixed bed failure monitoring device detects that the conductivity of the effluent water quality of the upper sampling tube in the two adjacent sampling tubes is less than or equal to the set value S, then monitor the time interval t of closing the lower sampling electric valve, and calculate the resin failure rate v=h / t of the mixed bed based on the resin height difference h between the two adjacent sampling tubes, and then take the distance from the currently opened sampling electric valve to the sampling electric valve at the bottom of the protective layer as the remaining resin exchange height h. 剩余 According to the remaining resin exchange height h 剩余 The remaining working time t can be calculated by measuring the resin failure rate v in the mixed bed. 剩余Otherwise, the mixed bed failure monitoring device 7 continues to control the closing of the upper sampling electric valve and the opening of the adjacent lower sampling electric valve 3 and the corresponding sampling isolation valve 4; finally, based on the detection results of the conductivity meters corresponding to the upper and lower sampling electric valves of the protective layer, it makes a suggestion to start the regeneration system or forces the regeneration system to start.

[0014] As a further improvement of the present invention, the step of suggesting or forcibly starting the regeneration system based on the detection results of the conductivity meters corresponding to the upper and lower sampling electric valves of the protective layer includes the following steps: When the conductivity meter reading corresponding to the sampling electric valve above the protective layer exceeds the set value S, the mixed bed failure monitoring device indicates that the mixed bed is about to fail, shuts down the mixed bed, and regenerates the resin; if no manual regeneration process is performed, then the waiting time t is... 剩余 Afterwards, the fine treatment mixed bed inlet valve and fine treatment mixed bed outlet valve are automatically closed, and the fine treatment mixed bed resin outlet valve is opened to transfer the failed resin to the resin regeneration system. After regeneration is completed, the fine treatment mixed bed resin inlet valve is opened to transfer the regenerated resin back to the fine treatment mixed bed. When the conductivity meter corresponding to the sampling electric valve at the bottom of the protective layer detects a value greater than the set value S, the fine treatment mixed bed inlet valve and fine treatment mixed bed outlet valve are automatically closed, the fine treatment mixed bed resin outlet valve is opened, and the failed resin is transferred to the resin regeneration system. After regeneration is completed, the fine treatment mixed bed resin inlet valve is opened, and the regenerated resin is transferred back to the fine treatment mixed bed.

[0015] The present invention has the following beneficial effects: This patent proposes a complete situational awareness system for the failure of a mixed bed resin in a fine treatment process. Vertical monitoring of the failure status of the mixed bed is achieved through layered sampling tubes. A dual-valve structure, consisting of a sampling electric valve and a sampling isolation valve, controls and protects the sampling process. Preliminary conductivity monitoring is achieved by connecting multiple sampling tubes in series to one end of the cation exchange resin column and then connecting them to a conductivity meter. By understanding the stratification and extent of resin failure within the mixed bed, the system can determine the trend of continued resin failure, providing a basis for accurate identification of the failure location and subsequent corrective measures. This enables early warning and the selection of regenerated resin.

[0016] Preferably, the separation tower, regeneration tower, and transfer pump of the resin regeneration system work together to complete the resin regeneration process; the PLC module adopts a specific algorithm based on the slope of sodium ion leakage rate and conductivity change to model the process more accurately, improve the regeneration effect and efficiency, ensure that the resin can be restored to a good working state, and replenish the regenerated resin medium for the mixed bed where the resin has failed.

[0017] Preferably, arranging sampling tubes at equal intervals allows for uniform sampling at different heights of the fine-processed mixed bed, making the collected samples more representative and thus more accurately reflecting the working state and failure status of the resin inside the mixed bed, improving the accuracy of failure degree and trend judgment.

[0018] Preferably, 316L stainless steel has good corrosion resistance, which can adapt to the complex water quality environment in the fine treatment mixed bed, ensure that the sampling tube is not corroded and damaged during long-term use, ensure the stability and reliability of the sampling work, and extend the service life of the equipment.

[0019] Preferably, the anti-clogging filter can effectively filter out impurities and large particles in the water, preventing these substances from entering the sampling tube and causing blockage, ensuring the sampling tube is unobstructed, enabling the sampling process to proceed smoothly, and ensuring the accuracy and timeliness of the monitoring data.

[0020] Preferably, the pneumatic PTFE-lined butterfly valve has the characteristics of flexible operation, good sealing performance, and corrosion resistance. Using this type of valve can accurately control the flow rate of resin, ensuring the stability and reliability of the resin transmission process. At the same time, its corrosion resistance can adapt to the chemical environment during the resin transmission process, reducing the risk of valve damage and leakage.

[0021] Prioritize setting a reasonable limit S for hydrogen conductivity detection results to provide a clear standard for judging whether the effluent quality of the fine treatment mixed bed is up to standard and whether the resin has failed. Within the limit range of 0.10-0.15 μS / cm, the effluent purity is high, the water quality is normal, and the resin has not failed. However, if it exceeds this range, the ions in the effluent have not been removed, the resin's exchange capacity has been exhausted, and measures should be taken in time to ensure that the effluent quality meets the requirements.

[0022] This patent also discloses a method for monitoring the operational health of a mixed-bed resin system based on resin tracking in fine treatment. The method includes steps such as opening a sampling electric valve and a sampling isolation valve to monitor water quality, determining the location of the failed resin layer, and calculating the resin failure rate and remaining working time. Through step-by-step monitoring and judgment, this method can accurately determine the location of the failed resin layer in the fine-treatment mixed-bed, calculate the resin failure rate and remaining working time, and provide operators with detailed information on failure status and processing time. This allows operators to schedule resin regeneration work in a timely and reasonable manner, avoiding water quality problems caused by resin failure and improving the system's operational stability and reliability.

[0023] Preferably, based on the detection results of the conductivity meters corresponding to the electric valves at different locations of the protective layer, measures such as suggesting or forcibly starting the regeneration system are taken according to the situation, which can more accurately control the timing of resin regeneration. A warning is given when the mixed bed is about to fail, allowing operators sufficient time to prepare for regeneration; when the mixed bed has already severely failed, the regeneration system is automatically and forcibly started to avoid serious impact on the effluent quality due to prolonged resin failure, ensuring the safe and stable operation of the system. Attached Figure Description

[0024] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and are not intended to specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a schematic diagram of the operational health monitoring system based on fine-processed mixed-bed resin tracking in Example 1; Figure 2 This is a flowchart illustrating the steps of a method for monitoring the operational health of a mixed-bed resin based on fine-treatment tracking, as described in Example 1. The components include: 1. Fine treatment mixed bed; 2. Sampling tube; 3. Sampling electric valve; 4. Sampling isolation valve; 5. Cation resin column; 6. Conductivity meter; 7. Mixed bed failure monitoring device; 8. Fine treatment mixed bed outlet valve; 9. Fine treatment mixed bed resin outlet valve; 10. Fine treatment mixed bed resin inlet valve; 11. Fine treatment mixed bed water inlet valve; 12. Resin regeneration system; 31. Top layer sampling electric valve; 32. Upper part of protective layer sampling electric valve; 33. Lower part of protective layer sampling electric valve. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is stated to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1 like Figure 1 As shown, this embodiment provides an operational health monitoring system based on fine-processed mixed bed resin tracking, including a sampling tube 2, a sampling electric valve 3, a sampling isolation valve 4, a cation resin column 5, a conductivity meter 6, a mixed bed failure monitoring device 7, and a resin regeneration system 12. The sampling tube 2 extends into the central axis of the fine-processed mixed bed 1. Multiple sampling tubes 2 are arranged along the height direction of the fine-processed mixed bed 1, and are all connected in series to one end of the cation resin column 5 after being connected to the sampling electric valve 3 and the sampling isolation valve 4 in sequence. The other end of the cation resin column 5 is connected to the conductivity meter 6. The mixed bed failure monitoring device 7 is electrically connected to the sampling electric valve 3, the sampling isolation valve 4, and the conductivity meter 6. The resin regeneration system 12 is connected to the fine-processed mixed bed inlet water pipeline and the fine-processed mixed bed outlet water pipeline through the fine-processed mixed bed inlet resin valve 10 and the fine-processed mixed bed outlet resin valve 9, respectively.

[0029] The resin regeneration system 12 includes a separation tower, a regeneration tower, a transfer pump, and a PLC module. The PLC module uses an algorithm based on modeling the change slope of sodium ion leakage rate and conductivity, which can accurately determine the degree of resin regeneration based on the change in conductivity and optimize the regeneration process. The resin regeneration system 12 is used to separate the cation and anion resins in the failed resin for separate regeneration. The tower body is made of stainless steel, with a diameter of 1000 mm and a height of 3000 mm.

[0030] The sampling tubes 2 are arranged at equal intervals along the height direction of the fine treatment mixed bed 1. Specifically, the sampling tubes have an outer diameter of 10mm and an inner diameter of 8mm, and can be made of 316L stainless steel, which has good corrosion resistance and can adapt to the complex water quality environment in the fine treatment mixed bed, ensuring long-term stable use.

[0031] Specifically, the cation exchange resin column 5 is made of transparent acrylic glass, which facilitates observation of the resin's state and color changes. It has a diameter of 50mm and a height of 200mm, and is filled with an appropriate amount of cation exchange resin to pretreat the sampled water, remove cations, and improve the accuracy of conductivity measurements.

[0032] The limit value S for the hydrogen conductivity detection result of the conductivity meter 6 is 0.10-0.15 μS / cm. Specifically, the measurement range of the conductivity meter 6 can be 0-20 μS / cm, which can meet the monitoring requirements of the effluent quality of the fine treatment mixed bed.

[0033] The height difference h between two adjacent sampling tubes 2 is set to 10-30cm.

[0034] Specifically, both the sampling electric valve 3 and the sampling isolation valve 4 are electric ball valves, which offer rapid switching, good sealing, and long service life. The nominal diameter of the valve body can be selected as 10mm to match the sampling pipe 2, ensuring smooth fluid flow. Both the sampling electric valve 3 and the sampling isolation valve 4 are remotely controlled by the mixed bed failure monitoring device 7, achieving automated operation.

[0035] The method for monitoring the operational health of a mixed-bed resin system based on fine-treatment tracking in this embodiment includes the following steps: After the new resin is put into operation in the fine treatment mixed bed 1, the first layer sampling electric valve 31 and the corresponding sampling isolation valve 4 are opened to monitor the effluent quality of the layer where the corresponding sampling tube 2 is located. When the detection result of the conductivity meter 6 is greater than 0.1 μS / cm, the resin in that layer has failed. The mixed bed failure monitoring device 7 closes the first layer sampling electric valve 31 and opens the next layer sampling electric valve 3 and the corresponding sampling isolation valve 4.

[0036] The mixed bed failure monitoring device 7 monitors the time interval between closing the corresponding sampling electric valve 3 of the two sampling tubes 2, which are 15cm apart, and calculates the resin failure rate of the mixed bed v=1cm / h. The current distance between the sampling electric valve 3 and the sampling electric valve 33 at the bottom of the protective layer is 60cm, so the remaining working time of the mixed bed can be estimated to be 60h.

[0037] When the conductivity meter 6 corresponding to the upper sampling electric valve 32 of the protective layer is greater than 0.1 μS / cm, the mixed bed failure monitoring device 7 indicates that the mixed bed is about to fail. At this time, the mixed bed should be shut down and regenerated. If the regeneration process is not performed, since the distance between the upper sampling electric valve 32 and the lower sampling electric valve 33 of the protective layer is 30cm, after waiting for 30 hours (30cm divided by 1cm / h), the fine treatment mixed bed inlet valve 11 and the fine treatment mixed bed outlet valve 8 will be automatically closed, and the fine treatment mixed bed resin outlet valve 9 will be opened to transfer the failed resin to the resin regeneration system 12. After regeneration, the fine treatment mixed bed resin inlet valve 10 will be opened to transfer the regenerated resin back to the fine treatment mixed bed 1. The resin of the mixed bed will be regenerated, and a new mixed bed will be put into operation.

[0038] Example 2 The difference between this embodiment and Embodiment 1 is that: 1) The sampling tube 2 is equipped with an anti-clogging filter at its end.

[0039] 2) Both the resin inlet valve 10 and the resin outlet valve 9 of the fine treatment mixed bed are pneumatic fluoropolymer-lined butterfly valves.

[0040] Anti-clogging filters can effectively filter out impurities and large particles in the water, preventing these substances from entering the sampling tube and causing blockages. This ensures that the sampling tube is unobstructed, allowing the sampling process to proceed smoothly and guaranteeing the accuracy and timeliness of the monitoring data.

[0041] Pneumatic PTFE-lined butterfly valves are characterized by flexible operation, good sealing performance, and corrosion resistance. Using this type of valve allows for precise control of the resin inlet and outlet flow, ensuring the stability and reliability of the resin transfer process. At the same time, its corrosion resistance can adapt to the chemical environment during resin transfer, reducing the risk of valve damage and leakage.

[0042] refer to Figure 2 This embodiment employs a method for monitoring the operational health of a mixed-bed resin system based on fine-treatment tracking, comprising the following steps: Open the top sampling electric valve 31 and the corresponding sampling isolation valve 4, monitor the effluent water quality of the layer where the corresponding sampling tube 2 is located. When the detection result of the conductivity meter 6 is greater than the set value S, it indicates that the top layer of resin has failed. The mixed bed failure monitoring device 7 controls the top sampling electric valve 31 to close and opens the sampling electric valve 3 and the corresponding sampling isolation valve 4 of the adjacent lower layer. The mixed bed failure monitoring device 7 determines the location of the failed resin layer based on the water quality detection result, and sequentially closes the sampling electric valve 3 and the sampling isolation valve 4 corresponding to the failed resin layer and opens the sampling electric valve 3 and the sampling isolation valve 4 of the next layer. If the mixed bed failure monitoring device 7 detects that the conductivity of the effluent water from only one of the two adjacent sampling tubes 2 is less than or equal to the set value S, it monitors the time interval t for closing the corresponding sampling electric valve 3, and calculates the resin failure rate v=h / t of the mixed bed based on the resin height difference h between the two adjacent sampling tubes 2. Then, it takes the distance from the currently open sampling electric valve 3 to the sampling electric valve 33 at the bottom of the protective layer as the remaining resin exchange height h. 剩余 According to the remaining resin exchange height h 剩余 The remaining working time t can be calculated by measuring the resin failure rate v in the mixed bed. 剩余 Otherwise, the mixed bed failure monitoring device 7 continues to control the closing of the upper sampling electric valve and the opening of the adjacent lower sampling electric valve 3 and the corresponding sampling isolation valve 4. Based on the detection results of the conductivity table 6 corresponding to the upper sampling electric valve 32 and the lower sampling electric valve 33 of the protective layer, a suggestion is made to start the regeneration system or to force the regeneration system to start.

[0043] Specifically, the step of suggesting or forcibly starting the regeneration system based on the detection results of the conductivity table 6 corresponding to the upper sampling electric valve 32 and the lower sampling electric valve 33 of the protective layer includes the following steps: The step of suggesting or forcibly starting the regeneration system based on the detection results of the conductivity table 6 corresponding to the upper sampling electric valve 32 and the lower sampling electric valve 33 of the protective layer includes the following steps: When the conductivity meter 6 corresponding to the sampling electric valve 32 above the protective layer detects a value greater than the set value S, the mixed bed failure monitoring device 7 indicates that the mixed bed is about to fail, stops the mixed bed, and regenerates the resin; if no manual regeneration process is performed, then the waiting time t is... 剩余 Afterwards, the fine treatment mixed bed inlet valve 11 and fine treatment mixed bed outlet valve 8 are automatically closed, the fine treatment mixed bed resin outlet valve 9 is opened, and the failed resin is transferred to the resin regeneration system 12. After regeneration is completed, the fine treatment mixed bed resin inlet valve 10 is opened, and the regenerated resin is transferred back to the fine treatment mixed bed 1. When the detection result of the conductivity meter 6 corresponding to the sampling electric valve 33 at the bottom of the protective layer is greater than the set value S, the fine treatment mixed bed inlet valve 11 and the fine treatment mixed bed outlet valve 8 are automatically closed, the fine treatment mixed bed resin outlet valve 9 is opened, and the failed resin is transferred to the resin regeneration system 12. After regeneration is completed, the fine treatment mixed bed resin inlet valve 10 is opened, and the regenerated resin is transferred back to the fine treatment mixed bed 1.

[0044] Specifically, an anti-clogging filter screen with a pore size of 0.5mm is installed at the end of sampling tube 2. This effectively filters impurities and large particles in the water, preventing clogging of the sampling tube. The anti-clogging filter screen effectively removes impurities and large particles from the water, preventing these substances from entering the sampling tube and causing blockage, ensuring unobstructed sampling, and enabling the sampling process to proceed smoothly, thus ensuring the accuracy and timeliness of the monitoring data.

[0045] Pneumatic PTFE-lined butterfly valves are characterized by flexible operation, good sealing performance, and corrosion resistance. Using this type of valve allows for precise control of the resin inlet and outlet flow, ensuring the stability and reliability of the resin transfer process. At the same time, its corrosion resistance can adapt to the chemical environment during resin transfer, reducing the risk of valve damage and leakage.

[0046] The beneficial effects of this invention are summarized as follows: First, by monitoring the failure status of the fine treatment mixed bed layer by layer, the present invention can realize the situational awareness of the failure of the fine treatment mixed bed, and can predict the effluent quality of the fine treatment mixed bed in advance, and prepare acid, alkali and demineralized water for resin regeneration. Secondly, the multiple sampling tubes of the present invention achieve situational awareness of the failure of fine-process mixed bed by switching the sampling to correspond to a conductivity meter, with minimal cost. Finally, by sensing the situation of mixed bed failure, this invention ensures that the fine-treatment mixed bed will not experience leakage of impurity ions due to sudden failure, thus guaranteeing the long-term stability of water quality in the power plant's water-steam system.

[0047] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. A system for monitoring operational health based on fine-treatment mixed-bed resin tracking, characterized in that, The system includes a sampling tube (2), a sampling electric valve (3), a sampling isolation valve (4), a cation exchange resin column (5), a conductivity meter (6), a mixed bed failure monitoring device (7), and a resin regeneration system (12). The sampling tube (2) extends into the central axis of the fine-treatment mixed bed (1). Multiple sampling tubes (2) are arranged along the height direction of the fine-treatment mixed bed (1) and are connected in series to one end of the cation exchange resin column (5) after being connected to the sampling electric valve (3) and the sampling isolation valve (4). The other end of the cation exchange resin column (5) is connected to the conductivity meter (6). The mixed bed failure monitoring device (7) is electrically connected to the sampling electric valve (3), the sampling isolation valve (4), and the conductivity meter (6). The resin regeneration system (12) is connected to the fine-treatment mixed bed inlet water pipeline and the fine-treatment mixed bed outlet water pipeline through the fine-treatment mixed bed inlet resin valve (10) and the fine-treatment mixed bed outlet resin valve (9), respectively.

2. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The resin regeneration system (12) includes a separation tower, a regeneration tower, a transfer pump, and a PLC module; the PLC module uses an algorithm based on modeling the change slope of sodium ion leakage rate and conductivity.

3. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The sampling tubes (2) are arranged at equal intervals along the height direction of the fine treatment mixed bed (1).

4. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The sampling tube (2) is made of 316L stainless steel.

5. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The sampling tube (2) is equipped with an anti-clogging filter at its end.

6. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, Both the resin inlet valve (10) and the resin outlet valve (9) of the fine treatment mixed bed are pneumatic fluoropolymer-lined butterfly valves.

7. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The limit value S of the hydrogen conductivity test result of the conductivity table (6) is 0.10-0.15 μS / cm.

8. The operational health monitoring system based on fine-treatment mixed-bed resin tracking according to claim 1, characterized in that, The height difference h between two adjacent sampling tubes (2) is set at 10-30cm.

9. A method for monitoring the operational health of a mixed-bed resin tracking system based on fine treatment, as described in any one of claims 1-8, characterized in that, Includes the following steps: Open the top sampling electric valve (31) and the corresponding sampling isolation valve (4), monitor the effluent water quality of the layer where the corresponding sampling tube (2) is located, and when the detection result of the conductivity meter (6) is greater than the set value S, it indicates that the top layer of resin has failed. The mixed bed failure monitoring device (7) controls the closing of the top sampling electric valve (31) and opens the sampling electric valve (3) and the corresponding sampling isolation valve (4) of the adjacent lower layer. The mixed bed failure monitoring device (7) determines the location of the failed resin layer according to the water quality detection result, and sequentially closes the sampling electric valve (3) and the sampling isolation valve (4) corresponding to the failed resin layer and opens the sampling electric valve (3) and the sampling isolation valve (4) of the next layer. If the mixed bed failure monitoring device (7) finds that the conductivity of the sampled water from the upper sampling tube (2) of the two adjacent sampling tubes (2) is less than or equal to the set value S, then monitors the time interval t of closing the lower sampling electric valve (3), and calculates the resin failure rate v=h / t of the mixed bed based on the resin height difference h between the two adjacent sampling tubes (2). Then, the distance from the currently opened sampling electric valve (3) to the sampling electric valve (33) at the bottom of the protective layer is taken as the remaining resin exchange height h. 剩余 According to the remaining resin exchange height h 剩余 The remaining working time t can be calculated by measuring the resin failure rate v in the mixed bed. 剩余 Otherwise, the mixed bed failure monitoring device (7) continues to control the closing of the upper sampling electric valve and the opening of the sampling electric valve (3) and the corresponding sampling isolation valve (4) of the adjacent lower layer. Based on the detection results of the conductivity table (6) corresponding to the upper sampling electric valve (32) and the lower sampling electric valve (33) of the protective layer, a suggestion to start the regeneration system or a forced start of the regeneration system is made.

10. The method for monitoring the operational health of a mixed-bed resin tracking system based on fine treatment according to claim 9, characterized in that, The step of suggesting or forcibly starting the regeneration system based on the detection results of the conductivity table (6) corresponding to the upper sampling electric valve (32) and the lower sampling electric valve (33) of the protective layer includes the following steps: When the detection result of the conductivity meter (6) corresponding to the sampling electric valve (32) above the protective layer is greater than the set value S, the mixed bed failure monitoring device (7) indicates that the mixed bed is about to fail, stops the mixed bed and regenerates the resin. If the regeneration process is not manually executed, then the waiting time t 剩余 Afterwards, the fine treatment mixed bed inlet valve (11) and fine treatment mixed bed outlet valve (8) are automatically closed, the fine treatment mixed bed resin outlet valve (9) is opened, and the failed resin is transferred to the resin regeneration system (12). After regeneration is completed, the fine treatment mixed bed resin inlet valve (10) is opened, and the regenerated resin is transferred back to the fine treatment mixed bed (1). When the detection result of the conductivity meter (6) corresponding to the sampling electric valve (33) at the bottom of the protective layer is greater than the set value S, the fine treatment mixed bed inlet valve (11) and fine treatment mixed bed outlet valve (8) are automatically closed, the fine treatment mixed bed resin outlet valve (9) is opened, and the failed resin is transferred to the resin regeneration system (12). After the regeneration is completed, the fine treatment mixed bed resin inlet valve (10) is opened, and the regenerated resin is transferred back to the fine treatment mixed bed (1).

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