A supervision method, monitoring device and pure water system of a pure water system

Abstract

The present invention discloses a supervision method, a monitoring device and a pure water system for a pure water system. The supervision method for the pure water system is to respectively obtain the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of a multi-stage reverse osmosis device, compare the multiple actual conductivities with the corresponding multiple preset conductivities, and determine that at least one pure water membrane tube with an actual conductivity greater than the corresponding preset conductivity is a tube to be processed. In the above acquisition method, since the actual conductivities of the water bodies at the outlets of multiple pure water membrane tubes of the multi-stage reverse osmosis device are respectively obtained, the fault location can be accurately positioned, the steps are simplified, convenience is provided for subsequent anomaly handling, and only the faulty part needs to be replaced, saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of body electrophoresis coating, and particularly to a supervision method, a monitoring device and a pure water system for a pure water system. Background Art

[0002] In the body electrophoresis coating industry, in order to increase the surface smoothness, brightness and adhesion of the body, pure water with a conductivity below 15 uS / cm - 5 uS / cm is required for the preparation of the electrophoresis solution. In addition, pure water with a conductivity below 10 uS / cm is also required for rinsing the body. Therefore, each automobile manufacturer is equipped with a pure water treatment system. The pure water treatment system usually includes a multi-stage reverse osmosis device, and each of the reverse osmosis devices has a plurality of pure water membrane tubes. In the prior art, usually, the water sample at the outlet of the last-stage reverse osmosis device is directly collected, and the multi-stage reverse osmosis device is cleaned according to the conductivity of the water sample at the outlet of the last-stage reverse osmosis device. When the conductivity of the water sample at the outlet of the last-stage reverse osmosis device after cleaning is still greater than the preset conductivity, a plurality of pure water membrane tubes of the multi-stage reverse osmosis device will be replaced. Thus, the supervision method of the pure water system fails to accurately locate the fault location, and replacing all the pure water membrane tubes increases the cost. Summary of the Invention

[0003] The main object of the present invention is to propose a supervision method, a monitoring device and a pure water system for a pure water system, aiming to solve the problems that the supervision method of the pure water system in the prior art fails to accurately locate the fault location, and replacing all the pure water membrane tubes increases the cost.

[0004] To achieve the above object, the supervision method of the pure water system proposed by the present invention, the pure water system includes a water flow path, and a multi-stage reverse osmosis device is sequentially arranged on the water flow path. Each of the reverse osmosis devices includes a plurality of pure water membrane tubes. The steps of the supervision method of the pure water system include:

[0005] Respectively obtain the actual conductivity of the water bodies at the outlets of the plurality of pure water membrane tubes of the multi-stage reverse osmosis device;

[0006] Compare the plurality of actual conductivities with the corresponding plurality of preset conductivities;

[0007] Determine at least one of the pure water membrane tubes whose actual conductivity is greater than the corresponding preset conductivity as the tube to be processed.

[0008] Optionally, the step of determining at least one of the pure water membrane tubes whose actual conductivity is greater than the corresponding preset conductivity as the tube to be processed includes:

[0009] When the actual conductivity of the pure water membrane tubes of only one stage in the multi-stage reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane tubes of this stage as the tubes to be processed;

[0010] After cleaning the pipe to be processed, obtain the actual conductivity of the pure water membrane pipe after cleaning;

[0011] When the actual conductivity of the pure water membrane pipe after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane pipe as a damaged pipe.

[0012] Optionally, the step of determining at least one pure water membrane pipe with the actual conductivity greater than the corresponding preset conductivity as a pipe to be processed includes:

[0013] When the actual conductivity of the pure water membrane pipes in at least two adjacent stages of the multi-stage reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane pipe with the earlier stage as the pipe to be processed;

[0014] After cleaning the pipe to be processed, obtain the actual conductivity of the pure water membrane pipe after cleaning;

[0015] Select a supervision strategy according to the actual conductivity of the pure water membrane pipe after cleaning.

[0016] Optionally, the step of selecting a supervision strategy according to the actual conductivity of the pure water membrane pipe after cleaning includes:

[0017] When the actual conductivity of the pure water membrane pipe after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane pipe as a damaged pipe;

[0018] When the actual conductivity of the pure water membrane pipe after cleaning is less than the corresponding preset conductivity, obtain the actual conductivity of the pure water membrane pipes in the multi-stage reverse osmosis device with the later stage again;

[0019] Select a supervision strategy again according to the actual conductivity of the pure water membrane pipes in each stage of the reverse osmosis device with the later stage.

[0020] Optionally, the step of selecting a supervision strategy again according to the actual conductivity of the pure water membrane pipes in each stage of the reverse osmosis device with the later stage includes:

[0021] When the actual conductivity of the pure water membrane pipe in the later stage reverse osmosis device is greater than the corresponding preset conductivity, determine the corresponding pure water membrane pipe as a pipe to be processed;

[0022] After cleaning the pipe to be processed, obtain the actual conductivity of the pure water membrane pipe after cleaning;

[0023] When the actual conductivity of the pure water membrane pipe after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane pipe as a damaged pipe.

[0024] Optionally, the multi-stage reverse osmosis device is set to two stages. The preset conductivity corresponding to the pure water membrane tube at the first stage is 100 uS / cm, and / or the preset conductivity corresponding to the pure water membrane tube at the second stage is 10 uS / cm.

[0025] The present invention also provides a monitoring device, including a memory, a processor, and a supervision program based on the pure water system stored on the memory and operable on the processor. When the supervision program of the pure water system is executed by the processor, the steps of the supervision method of the pure water system as described above are implemented.

[0026] The present invention also provides a pure water system. The pure water system forms a water body flow path, and the water body flow path has a water inlet. The pure water system includes:

[0027] A water supply device, which is connected to the water inlet;

[0028] A first filtration component, which is arranged on the water body flow path and is used for filtering the water body entering from the water inlet;

[0029] A first-stage reverse osmosis device, which is arranged on the water body flow path and is located behind the filtration component, and is used to reduce the conductivity of the water body flowing through the filtration component;

[0030] A second-stage reverse osmosis device, which is arranged on the water body flow path and is located behind the first-stage reverse osmosis device, and is used to reduce the conductivity of the water body flowing through the first-stage reverse osmosis device; and,

[0031] A monitoring device, including the monitoring device as described above.

[0032] Optionally, the pure water system further includes a first high-pressure pump, which is arranged on the water body flow path and is located between the filtration component and the first-stage reverse osmosis device; and / or,

[0033] The pure water system further includes a second high-pressure pump, which is arranged on the water body flow path and is located between the first-stage reverse osmosis device and the second-stage reverse osmosis device; and / or,

[0034] The pure water system further includes a third high-pressure pump, which is arranged on the water body flow path and is located behind the second-stage reverse osmosis device.

[0035] Optionally, the pure water system further includes a second filtration component, which is arranged on the water body flow path and is located behind the third high-pressure pump.

[0036] In the technical solution provided by the present invention, the supervision method of the pure water system is to respectively obtain the actual conductivity of the water bodies at the outlets of the multiple pure water membrane tubes of the multi-stage reverse osmosis device, compare the multiple actual conductivities with the corresponding multiple preset conductivities, and determine that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed. In the above acquisition method, since the actual conductivity of the water bodies at the outlets of the multiple pure water membrane tubes of the multi-stage reverse osmosis device is respectively obtained, the fault location can be accurately located, the steps are simplified, convenience is provided for subsequent anomaly processing, and since the fault location can be accurately obtained, only the faulty pure water membrane tube needs to be replaced, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0038] Figure 1 Schematic diagram of an embodiment of the pure water system provided by the present invention;

[0039] Figure 2 For Figure 1 Schematic diagram of the structure of the monitoring device for the hardware operating environment involved in the embodiment solution in;

[0040] Figure 3 Schematic diagram of the process of an embodiment of the supervision method of the pure water system provided by the present invention;

[0041] Figure 4 For Figure 3 Schematic diagram of the process of an embodiment of step S30 in;

[0042] Figure 5 For Figure 3 Schematic diagram of the process of another embodiment of step S30 in;

[0043] Figure 6 For Figure 5 Schematic diagram of the process of an embodiment of step S303b in;

[0044] Figure 7 For Figure 6 Schematic diagram of the process of an embodiment of step S3033b in.

[0045] Explanation of the reference numerals in the drawings:

[0046]

[0047]

[0048] The realization, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0050] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0051] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] In the automotive body electrocoating industry, in order to increase the surface finish, brightness, and adhesion of the automotive body, pure water with a conductivity of 15 uS / cm - 5 uS / cm or less is required for the preparation of the electrocoating solution. In addition, pure water with a conductivity of 10 uS / cm or less is also required for rinsing the automotive body. Therefore, each automobile manufacturer is equipped with a pure water treatment system. The pure water treatment system usually includes multiple reverse osmosis devices, and each of the reverse osmosis devices has multiple pure water membrane tubes. In the prior art, the water sample at the outlet of the last-stage reverse osmosis device is usually directly collected, and the multiple reverse osmosis devices are cleaned according to the conductivity of the water sample at the outlet of the last-stage reverse osmosis device. When the conductivity of the water sample at the outlet of the last-stage reverse osmosis device after cleaning is still greater than the preset conductivity, multiple pure water membrane tubes of the multiple reverse osmosis devices will be replaced. In this way, the supervision method of the pure water system fails to accurately locate the fault location, and replacing all the pure water membrane tubes increases the cost.

[0053] The present invention provides a supervision method, a monitoring device and a pure water system for a pure water system. Figures 1 to 7 It is a schematic diagram of an embodiment of the supervision method, the monitoring device and the pure water system for the pure water system provided by the present invention.

[0054] Referring to Figure 1 and Figure 2 The present invention provides a pure water system 100. The pure water system 100 forms a water body flow path 1. The water body flow path has a water inlet 11. The pure water system 100 includes a water supply device 2, a first filtration component 3, a first-stage reverse osmosis device 4, a second-stage reverse osmosis device 5 and a monitoring device. The water supply device 2 is communicated with the water inlet 11. The first filtration component 3 is arranged on the water body flow path 1 and is used for filtering the water body entering from the water inlet 11. The first-stage reverse osmosis device 4 is arranged on the water body flow path 1 and is located behind the first filtration component 3 to reduce the conductivity of the water body flowing through the first filtration component 3. The second-stage reverse osmosis device 5 is arranged on the water body flow path 1 and is located behind the first-stage reverse osmosis device 4 to reduce the conductivity of the water body flowing through the first-stage reverse osmosis device 4. The monitoring device includes a memory, a processor and a supervision program based on the pure water system 100 stored on the memory and operable on the processor. The steps executed by the processor for the supervision program of the pure water system 100 include respectively obtaining the actual conductivities of the water bodies at the water outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis devices, comparing the multiple actual conductivities with corresponding multiple preset conductivities, and determining at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity as the tube to be processed, realizing accurate positioning of the fault location, simplifying the steps, providing convenience for subsequent abnormal processing, and since the fault location can be accurately obtained, only the faulty pure water membrane tube needs to be replaced, saving costs.

[0055] Further, the first filtration component 3 includes a multi-media filter 31, an activated carbon filter 32 and a first precision filter 33. The multi-media filter 31 can effectively remove suspended impurities to clarify the water. The activated carbon filter 32 can adsorb the residual chlorine that cannot be removed by the multi-media filter 31 to prevent the subsequent reverse osmosis membrane from being oxidized and degraded by it. At the same time, it also adsorbs polluting substances such as small molecular organic matters leaked from the multi-media filter 31, removes odors, colloids, pigments, heavy metal ions, etc. in the water body, and also has the effect of reducing COD. Then the first precision filter 33 filters to remove solid impurities and improve the quality of the water body.

[0056] It should be noted that both the primary reverse osmosis device 4 and the secondary reverse osmosis device 5 apply membrane separation technology, which can effectively remove charged ions, inorganic substances, colloidal particles, bacteria, organic substances, etc. in water. Since the technologies of the primary reverse osmosis device 4, the secondary reverse osmosis device 5, the multi-media filter 31, the activated carbon filter 32 and the first precision filter 33 are mature, the specific structures and working principles of the above devices are not elaborated herein one by one.

[0057] The monitoring device may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0058] Specifically, the pure water system 100 further includes a first high-pressure pump 6. The first high-pressure pump 6 is arranged on the water body flow path 1 and is located between the first filtration component 3 and the primary reverse osmosis device 4. Through the action of the first high-pressure pump 6, the water pressure of the water body flowing into the primary reverse osmosis device 4 is increased, facilitating the reverse osmosis operation.

[0059] Specifically, the pure water system 100 further includes a second high-pressure pump 7. The second high-pressure pump 7 is arranged on the water body flow path 1 and is located between the primary reverse osmosis device 4 and the secondary reverse osmosis device 5, increasing the water pressure of the water body flowing into the secondary reverse osmosis device 5, facilitating the reverse osmosis operation.

[0060] Specifically, the pure water system 100 further includes a third high-pressure pump 8. The third high-pressure pump 8 is arranged on the water body flow path 1 and is located after the secondary reverse osmosis device 5, increasing the water pressure of the water body flowing out of the secondary reverse osmosis device 5, facilitating the discharge of the water body.

[0061] Specifically, the pure water system 100 further includes a fourth high-pressure pump 10. The fourth high-pressure pump 10 is arranged on the water body flow path 1 and is located between the water supply device 2 and the first filtration component 3, increasing the water pressure of the water body flowing out of the water supply device 2 and increasing the flow rate of the water body entering the first filtration component 3.

[0062] Specifically, the pure water system 100 further includes a second filtration component 9. The second filtration component 9 is disposed on the water body flow path 1 and is located after the third high-pressure pump 8. By filtering through the second filtration component 9, the quality of the water body discharged by the pure water system 100 is improved.

[0063] Further, the second filtration component 9 includes an ultraviolet germicidal lamp 91 and a second precision filter 92. The water pressure of the water body discharged by the third high-pressure pump 8 is relatively high. The water body with a relatively high water pressure passes through the ultraviolet germicidal lamp 91. The ultraviolet germicidal lamp 91 emits ultraviolet light by exciting low-pressure mercury vapor to achieve physical sterilization and disinfection. Then, after the entity passes through the second precision filter 92 for filtration, impurities of the entity are removed, and the quality of the water body is improved.

[0064] In Figure 2 In the shown monitoring device, by calling the monitoring program of the pure water system 100 stored in the memory 1005 through the processor 1001, the monitoring program of the pure water system 100 performs the following operations:

[0065] Respectively obtain the actual conductivity of the water bodies at the water outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device;

[0066] Compare the multiple actual conductivities with the corresponding multiple preset conductivities;

[0067] Determine that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed.

[0068] Further, the step of determining that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed includes:

[0069] When the actual conductivity of the pure water membrane tubes of only one stage in multiple stages of the reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane tubes of this stage as the tubes to be processed;

[0070] After cleaning the tube to be processed, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0071] When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube.

[0072] Further, the step of determining that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed includes:

[0073] When the actual conductivity of the pure water membrane tubes in at least two adjacent levels of the multi-stage reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane tube with a previous level as the tube to be treated;

[0074] After cleaning the tube to be treated, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0075] Select a supervision strategy according to the actual conductivity of the pure water membrane tube after cleaning.

[0076] Further, the step of selecting a supervision strategy according to the actual conductivity of the pure water membrane tube after cleaning includes:

[0077] When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube;

[0078] When the actual conductivity of the pure water membrane tube after cleaning is less than the corresponding preset conductivity, obtain the actual conductivity of the pure water membrane tubes in the multi-stage reverse osmosis device with a subsequent level again;

[0079] Select a supervision strategy again according to the actual conductivity of the pure water membrane tubes in each subsequent level of the reverse osmosis device.

[0080] Further, the step of selecting a supervision strategy again according to the actual conductivity of the pure water membrane tubes in each subsequent level of the reverse osmosis device includes:

[0081] When the actual conductivity of the pure water membrane tube in the subsequent level of the reverse osmosis device is greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as the tube to be treated;

[0082] After cleaning the tube to be treated, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0083] When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube.

[0084] Further, the level of the multi-stage reverse osmosis device is set to two levels, the preset conductivity corresponding to the pure water membrane tube in the first level is 100 uS / cm, and / or the preset conductivity corresponding to the pure water membrane tube in the second level is 10 uS / cm.

[0085] In the technical solution provided by the present invention, the supervision method of the pure water system 100 is to respectively obtain the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device, compare the multiple actual conductivities with the corresponding multiple preset conductivities, and determine that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed. In the above acquisition method, since the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device is respectively obtained, the fault location can be accurately located, the steps are simplified, convenience is provided for subsequent exception handling, and since the fault location can be accurately obtained, only the faulty pure water membrane tube needs to be replaced, saving costs.

[0086] It should be noted that by measuring the water conductivity of the water produced by multiple pure water membrane tubes, it can be determined whether the pure water membrane tubes in the system are abnormal, the abnormal pure water membrane tubes can be accurately located, and then the abnormal pure water membrane tubes can be cleaned or replaced to achieve the purpose of quickly cleaning the reverse osmosis system, greatly simplifying the troubleshooting steps and shortening the time and steps for handling exceptions. At the same time, the cost of membrane tube cleaning and replacement is greatly reduced, and the occurrence of problems where the product water used in production exceeds the process range can be prevented.

[0087] Based on the above hardware structure, the present invention proposes a supervision method for the pure water system 100. The supervision method of the pure water system 100 is to respectively obtain the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device, compare the multiple actual conductivities with the corresponding multiple preset conductivities, and determine that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed. In the above acquisition method, since the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device is respectively obtained, the fault location can be accurately located, the steps are simplified, convenience is provided for subsequent exception handling, and since the fault location can be accurately obtained, only the faulty pure water membrane tube needs to be replaced, saving costs.

[0088] Specifically, referring to Figure 2 , the supervision method of the pure water system 100 configured by the supervision program of the pure water system 100 executes the following steps:

[0089] Step S10: Respectively obtain the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device;

[0090] To improve the water quality, it is necessary to regularly obtain the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device respectively. For example, it can be obtained weekly or every other week. Specifically, in this application, it is obtained regularly every month. Of course, in other embodiments, it can be obtained as needed, and this application does not make any limitations in this regard. In addition, the actual conductivity of the water body can be measured directly at the outlet of the pure water membrane tube by an instrument for measuring the conductivity of the water body, or samples can be taken regularly at the outlet of the pure water membrane tube and measured by an instrument for measuring the conductivity of the water body. Specifically, this application does not make any limitations in this regard. In addition, there are various types of instruments for measuring the conductivity of the water body, such as conductivity meters, etc., which all belong to the prior art. Specifically, this application will not elaborate on them one by one here.

[0091] Step S20: Compare the multiple actual conductivities with the corresponding multiple preset conductivities;

[0092] Specifically, in the embodiments of this application, the number of stages of the multi-stage reverse osmosis device is set to two. The preset conductivity corresponding to the pure water membrane tube at the first stage is 100 uS / cm, and / or the preset conductivity corresponding to the pure water membrane tube at the second stage is 10 uS / cm. Of course, in other embodiments, the number of stages of the multi-stage reverse osmosis device can also be set to three, four or five. In addition, the preset conductivity of each stage can be set as needed, and this application does not make any limitations in this regard.

[0093] Step S30: Determine that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed.

[0094] Specifically, the step of step S30 determining that at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity is a tube to be processed includes:

[0095] Step S301a: When the actual conductivity of the pure water membrane tubes of only one stage in the multi-stage reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane tubes of this stage as the tubes to be processed;

[0096] Step S302a: After cleaning the tube to be processed, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0097] Step S303a: When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube.

[0098] It should be noted that when the pure water membrane tube is determined to be a damaged tube, replace the damaged tube to save costs.

[0099] Specifically, the step S30 of determining at least one pure water membrane tube with the actual conductivity greater than the corresponding preset conductivity as the tube to be processed includes:

[0100] Step S301b: When the actual conductivity of the pure water membrane tubes in at least two adjacent stages of the multi-stage reverse osmosis device is greater than the corresponding preset conductivity, determine the pure water membrane tube with the earlier stage as the tube to be processed;

[0101] Step S302b: After cleaning the tube to be processed, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0102] Step S303b: Select a supervision strategy according to the actual conductivity of the pure water membrane tube after cleaning.

[0103] Furthermore, the step S303b of selecting a supervision strategy according to the actual conductivity of the pure water membrane tube after cleaning includes:

[0104] Step S3031b: When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube;

[0105] It should be noted that in this step, when determining that the corresponding pure water membrane tube is a damaged tube, replace the damaged tube to save costs.

[0106] Step S3032b: When the actual conductivity of the pure water membrane tube after cleaning is less than the corresponding preset conductivity, obtain the actual conductivity of the pure water membrane tubes in the multi-stage reverse osmosis device with the later stage again;

[0107] In this step, when the actual conductivity of the pure water membrane tube after cleaning is less than the corresponding preset conductivity, it indicates that there is no fault in the pure water membrane tube in the previous stage between at least two adjacent stages. By detecting the faults of the pure water membrane tubes in the later stage, the fault inspection can be carried out level by level to achieve accurate fault investigation. After discovering the fault, replace the faulty pure water membrane tube to save costs.

[0108] Step S3033b: Select a supervision strategy again according to the actual conductivity of the pure water membrane tubes in each stage of the reverse osmosis device with the later stage.

[0109] Furthermore, the step S3033b of selecting a supervision strategy again according to the actual conductivity of the pure water membrane tubes in each stage of the reverse osmosis device with the later stage includes:

[0110] Step S30331b: When the actual conductivity of the pure water membrane tube in the subsequent - stage reverse osmosis device is greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as the tube to be treated;

[0111] Step S30332b: After cleaning the tube to be treated, obtain the actual conductivity of the pure water membrane tube after cleaning;

[0112] Step S30333b: When the actual conductivity of the pure water membrane tube after cleaning is still greater than the corresponding preset conductivity, determine the corresponding pure water membrane tube as a damaged tube.

[0113] It should be noted that in this step, when determining that the corresponding pure water membrane tube is a damaged tube, replacing the damaged tube saves costs.

[0114] Specifically, taking the stage setting of the multi - stage reverse osmosis device as two - stage, the preset conductivity corresponding to the pure water membrane tube in the first stage is 100 uS / cm, the preset conductivity corresponding to the pure water membrane tube in the second stage is 10 uS / cm, the first - stage reverse osmosis device has 8 pure water membrane tubes, and the second - stage reverse osmosis device has 4 pure water membrane tubes as an example for illustration.

[0115] In the first embodiment, samples are taken at the sampling ports at the ends of each membrane tube of the first - stage reverse osmosis device every month, samples 1 - 8# are taken respectively and marked. Samples are taken at the sampling ports at the ends of each membrane tube of the second - stage reverse osmosis device every month, samples 9 - 12# are taken respectively and marked. The conductivity of the samples is measured and recorded. The measured values are recorded and judged whether they are abnormal. (If the conductivity of the water output from the first - stage reverse osmosis device > 100 uS / cm and the conductivity of the water output from the second - stage reverse osmosis device > 10 uS / cm, it is abnormal. For example, if the conductivity of the sample at the 8# sampling point is 113 uS / cm, it means that the 8# pure water membrane tube has an abnormality); Clean the determined abnormal reverse osmosis device (if the conductivity of the sample among 1 - 8# > 100 uS / cm, clean the first - stage reverse osmosis device, that is, the 1 - 8# pure water membrane tubes. If the conductivity of the sample among 9 - 12# > 10 uS / cm, clean the second - stage reverse osmosis device, that is, the 9 - 12# pure water membrane tubes); Take the water body of the pure water membrane tube cleaned due to abnormality (if the conductivity of the 8# sample before cleaning > 100 uS / cm, take the sample of the 8# membrane tube again. If the conductivity of the 10# sample before cleaning > 10 uS / cm, take the sample of the 10# membrane tube again); Measure the conductivity of the corresponding water body sample; If there is no abnormality, continue with daily management and control. If there is still an abnormality, replace the abnormal pure water membrane tube (if the conductivity of the 8# sample after cleaning > 100 uS / cm, replace the 8# membrane tube. If the conductivity of the 10# sample after cleaning > 10 uS / cm, replace the 10# membrane tube).

[0116] In the second embodiment, samples are taken monthly at the sampling ports at the ends of each membrane tube of the first-stage reverse osmosis device, and samples 1-8# are taken respectively and marked. Samples are taken monthly at the sampling ports at the ends of each membrane tube of the second-stage reverse osmosis device, and samples 9-12# are taken respectively and marked; the conductivity of the samples is measured and recorded. The conductivity of samples 1-5# and 7-8# is ≤100 uS / cm, and the conductivity of samples 9-12# is ≤10 uS / cm. The conductivity of the sample at sampling point 6# is 121 uS / cm > 100 uS / cm, indicating that the pure water membrane tube at 6# has an abnormality and needs to be cleaned; clean the pure water membrane tube at 6#; take the produced water sample of the pure water membrane tube at 6# again and measure the conductivity of the sample; the conductivity of the sample of the membrane tube at 6# is ≤100 uS / cm, and continue with daily control.

[0117] In the third embodiment, samples are taken monthly at the sampling ports at the ends of each membrane tube of the first-stage reverse osmosis device, and samples 1-8# are taken respectively and marked. Samples are taken monthly at the sampling ports at the ends of each membrane tube of the second-stage reverse osmosis device, and samples 9-12# are taken respectively and marked; the conductivity of the samples is measured and recorded; the conductivity of samples 1-8# is ≤100 uS / cm, and the conductivity of samples 10-12# is ≤10 uS / cm. The conductivity of the sample at sampling point 9# is 13 uS / cm > 10 uS / cm, indicating that the pure water membrane tube at 9# has an abnormality and needs to be cleaned; clean the pure water membrane tube at 9#; take the produced water sample of the pure water membrane tube at 9# again and measure the conductivity of the sample; the conductivity of the sample of the membrane tube at 9# is 12 uS / cm > 10 uS / cm, indicating that the membrane tube has reached the service life and cleaning can no longer reduce the conductivity, so replace the pure water membrane tube at 9# with a new one.

[0118] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A supervision method for a pure water system, the pure water system includes a water delivery flow path, and a multi-stage reverse osmosis device is sequentially arranged on the water delivery flow path. Each reverse osmosis device includes a plurality of pure water membrane tubes, and is characterized in that, The steps of the supervision method for the pure water system include: Obtaining the actual conductivity of the water bodies at the outlets of multiple pure water membrane tubes of multiple stages of the reverse osmosis device respectively; Comparing the multiple actual conductivities with the corresponding multiple preset conductivities; Determining at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity as the tube to be processed; The step of determining at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity as the tube to be processed includes: When the actual conductivities of the pure water membrane tubes of at least two adjacent stages in the multiple stages of the reverse osmosis device are greater than the corresponding preset conductivities, determining the pure water membrane tube with the earlier stage as the tube to be processed; After cleaning the tube to be processed, obtaining the actual conductivity of the cleaned pure water membrane tube; Selecting a supervision strategy according to the actual conductivity of the cleaned pure water membrane tube; The step of selecting a supervision strategy according to the actual conductivity of the cleaned pure water membrane tube includes: When the actual conductivity of the cleaned pure water membrane tube is still greater than the corresponding preset conductivity, determining the corresponding pure water membrane tube as a damaged tube; When the actual conductivity of the cleaned pure water membrane tube is less than the corresponding preset conductivity, obtaining the actual conductivities of the pure water membrane tubes in multiple stages of the reverse osmosis device with the later stage again; Selecting a supervision strategy again according to the actual conductivities of the pure water membrane tubes in each stage of the reverse osmosis device with the later stage; The step of selecting a supervision strategy again according to the actual conductivities of the pure water membrane tubes in each stage of the reverse osmosis device with the later stage includes: When the actual conductivity of the pure water membrane tube in the reverse osmosis device of the later stage is greater than the corresponding preset conductivity, determining the corresponding pure water membrane tube as the tube to be processed; After cleaning the tube to be processed, obtaining the actual conductivity of the cleaned pure water membrane tube; When the actual conductivity of the cleaned pure water membrane tube is still greater than the corresponding preset conductivity, determining the corresponding pure water membrane tube as a damaged tube.

2. The supervision method of the pure water system according to claim 1, characterized in that, The step of determining at least one of the pure water membrane tubes with the actual conductivity greater than the corresponding preset conductivity as the tube to be processed includes: When the actual conductivity of the pure water membrane tubes of only one stage in the multiple stages of the reverse osmosis device is greater than the corresponding preset conductivity, determining the pure water membrane tubes of this stage as the tubes to be processed; After cleaning the tube to be processed, obtaining the actual conductivity of the cleaned pure water membrane tube; When the actual conductivity of the cleaned pure water membrane tube is still greater than the corresponding preset conductivity, determining the corresponding pure water membrane tube as a damaged tube.

3. The supervision method of the pure water system according to claim 1, characterized in that, The stages of the multi-stage reverse osmosis device are set to two stages. The preset conductivity corresponding to the pure water membrane tubes in the first stage is 100 uS / cm, and / or the preset conductivity corresponding to the pure water membrane tubes in the second stage is 10 uS / cm.

4. A monitoring device, characterized in that, Including a memory, a processor, and a supervision program for the pure water system stored on the memory and executable on the processor. When the supervision program for the pure water system is executed by the processor, it realizes the steps of the supervision method for the pure water system according to any one of claims 1 to 3.

5. A pure water system, characterized in that, The pure water system forms a water body flow path, and the water body flow path has a water inlet. The pure water system includes: A water supply device, which is connected to the water inlet; A first filtration component, which is arranged on the water body flow path and is used for filtering the water body entering from the water inlet; A first-stage reverse osmosis device, which is arranged on the water body flow path and is located behind the filtration component, and is used to reduce the conductivity of the water body flowing through the filtration component; A second-stage reverse osmosis device, which is arranged on the water body flow path and is located behind the first-stage reverse osmosis device, and is used to reduce the conductivity of the water body flowing through the first-stage reverse osmosis device; and, A monitoring device, including the monitoring device as described in claim 4.

6. The pure water system according to claim 5, characterized in that, The pure water system further includes a first high-pressure pump, which is arranged on the water body flow path and is located between the filtration component and the first-stage reverse osmosis device; and / or, The pure water system further includes a second high-pressure pump, which is arranged on the water body flow path and is located between the first-stage reverse osmosis device and the second-stage reverse osmosis device; and / or, The pure water system further includes a third high-pressure pump, which is arranged on the water body flow path and is located behind the second-stage reverse osmosis device.

7. The pure water system according to claim 6, wherein The pure water system further includes a second filtration component, which is arranged on the water body flow path and is located behind the third high-pressure pump.

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