CN115575460A - Device and method for monitoring medium salt content of water cooling system of large phase modulator - Google Patents

Abstract

The present disclosure provides a device and method for monitoring the salt content of water-cooling system media used in large-scale condensers, including: a conductivity transmitter, a water sample storage unit, a standard mother liquor mixing system, and a detection unit. The detection unit includes water The sample storage area and electrodes are connected to the conductivity transmitter through the electrodes; the water sample storage units store different water samples to be tested respectively, and are connected to the detection unit through valves and pipelines. In the detection stage, the water sample storage unit realizes the water sample to be tested to enter the detection unit by controlling the opening and closing of the valve; the standard mother liquor mixing system is used for mixing pure water and standard mother liquor, and realizes the configuration of the standard solution based on the capacity configuration mechanism. The standard mother liquid mixing system is connected to the detection unit through a standard solution driving pump and pipelines, and in the calibration stage, the standard solution enters the detection unit by controlling the opening and closing of the driving pump.

Description

Device and method for monitoring salt content of medium in water-cooling system for large-scale condenser

technical field

The disclosure belongs to the technical field of conductivity detection of water-cooling systems, and in particular relates to a device and method for monitoring the salt content of water-cooling system medium used for large-scale condensers.

Background technique

The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

With the rapid development of the UHV industry, in order to ensure the safe and stable operation of DC power transmission, large-scale condensers have become a reactive power compensation method that can effectively ensure the safe and economical operation of units. It is necessary to improve the quality of the medium of the water cooling system. At present, the conductivity meter for the condenser is mainly used to monitor the quality of the cooling medium of the water-cooling system of the condenser. Compared with other chemical instruments, it has the advantages of fast response and sensitive signal response. The fastest diagnostic function, it has a good supervisory effect on the operation of the condenser, and reduces the corrosion and scaling problems of the water cooling system.

The inventor found that the reliability of the online conductivity meter is affected by many aspects such as standard solution, electrode selection, flow medium, temperature, and compensation prevention. Especially in the calibration process, there are mainly two methods used at this stage. One is the calibration method of off-line standard solution. This method mainly relies on the traceability of the standard solution, and ensures the linearity and slope of the instrument through two-point calibration. The standard conductivity meter with salt content is the standard solution. However, the high salt content of the standard solution is significantly different from the actual monitored water quality, and the conductivity in the pure water area belongs to the non-linear field. Off-line calibration can only ensure the stability of the meter. In the process of offline calibration, the environment will also have an inevitable impact on the ion state of the total salt in the standard solution, which cannot guarantee the accuracy of the instrument; the other is the online calibration method, according to "On-line chemistry of power plants Instrument inspection process" to calibrate the online chemical instrument in operation, the medium used is often the monitored water sample, in fact, it is to compare the standard meter with the tested meter. This kind of calibration method is not a function of the meter itself. It is mixed with human intervention, so there will be certain errors, which will bring unfavorable factors to the improvement of the accuracy of the instrument.

Contents of the invention

In order to solve the above problems, the present disclosure provides a device and method for monitoring the salt content of the water cooling system medium used in large-scale condensers. The solution described in the present disclosure overcomes the two technical difficulties of offline and online, and integrates the advantages of both The conductivity meter itself can be automatically calibrated during normal operation, and its accuracy is significantly improved.

According to the first aspect of an embodiment of the present disclosure, a device for monitoring the salt content of a water-cooling system medium for a large-scale condenser is provided, including: a conductivity transmitter, a water sample storage unit, a standard mother liquor mixing system, and a detection unit , the detection unit includes a water sample storage area and an electrode, and is connected to a conductivity transmitter through the electrode; wherein, the detection unit is used for detecting the total salt content of the water sample to be tested and the conductivity transmitter calibration;

The water sample storage units respectively store different water samples to be tested, and are connected to the detection unit through valves and pipelines. The water sample enters the detection unit;

The standard mother liquor mixing system is used for mixing pure water and standard mother liquor, and realizes the configuration of the standard solution based on the capacity allocation mechanism. The standard mother liquor mixing system is connected to the detection unit through the standard solution driving pump and pipeline. During the calibration stage , the standard solution enters the detection unit by controlling the opening and closing of the driving pump.

Further, the water sample storage unit includes a demineralized water sampling unit, an inner cooling water sampling unit, and an outer cooling water sampling unit, and the demineralized water sampling unit, the inner cooling water sampling unit, and the outer cooling water sampling unit control the water sampling unit through independent solenoid valves. At the same time, the water sample in the water sample storage unit is driven by the water sample driving pump to inject the water sample into the detection unit.

Further, the water sample drives the pump to distinguish the flow of demineralized water, inner cooling water and outer cooling water, and drives the water sample to enter the detection unit.

Further, the pure water storage system is used to store the pure water processed by the water treatment system, and the pure water storage system adopts a sealing method with a floating roof and a breathing device. Under the premise of realizing the isolation of the outside air, Keep the atmospheric pressure the same inside and outside.

Further, the pump driven by the standard solution is completely turned off during the actual production testing process, and is only turned on during the calibration process.

Further, the standard mother liquor mixing system is respectively connected with a pure water storage system and a standard mother liquor identification system, the pure water storage system is connected with a water treatment system for pure water preparation, and the standard mother liquor identification system is connected with different standard mother liquor Storage reagent bottle connection.

Further, the water treatment system is connected to the pure water storage system through a drive pump, and the flow of pure water is powered by the drive pump.

Further, the pure water storage system is connected with the standard mother liquor mixing system through a pure water metering pump, and the pure water quantity entering the standard mother liquor mixing system is controlled by the pure water metering pump, and the The inflow of the pure water provides power; the standard mother liquor mixing system is connected with the standard mother liquor identification system through a mother liquor metering pump, and the mother liquor metering pump controls the amount of mother liquor entering the standard mother liquor mixing system, and Power is provided for the inflow of the mother liquor.

Further, the standard mother solution includes demineralized water standard solution, inner cooling water standard solution and outer cooling water standard mother solution.

According to the second aspect of an embodiment of the present disclosure, a method for monitoring the salt content of a water-cooling system medium for a large-scale condenser is provided, which uses the above-mentioned salt content monitoring device for a water-cooling system medium for a large-scale condenser ,include:

Detection stage: control the water sample to be tested to enter the detection unit through the conductivity transmitter, and realize the detection of the salt content of the water sample to be tested based on the principle of Ohm’s law through the electrodes;

Calibration stage: by controlling the volume ratio of pure water and standard mother liquor in the standard mother liquor mixing system, a standard solution that meets the preset requirements is obtained, and the standard solution in the standard mother liquor mixing system is controlled to enter the detection unit, based on electrode induction Perform a calibration of the conductivity transmitter.

Compared with the prior art, the beneficial effects of the present disclosure are:

(1) This disclosure provides a method and system for monitoring the salt content of a water-cooling system medium used in a large-scale condenser. The solution is based on the original conductivity meter, adding a water treatment device and an automatic calibration system to convert pure water (only containing hydrogen ions and hydroxide ions) is used as a blank for instrument calibration to carry out zero point calibration on the sodium ion device. The device described in this embodiment can quantify the standard solution to the detection system through the automatic control system, and then add pure water quantitatively. The configuration of the standard solution is realized by means of this process. This process reduces the error of the instrument to the minimum. The method is simple and effective, and the accuracy of the chemical instrument is greatly improved, thereby improving the level of technical supervision of the water cooling system of the entire condenser and providing a guarantee for the safe and economical operation of the unit. Strong technical support;

(2) The device described in the present disclosure has an automatic calibration function, and the salt content of the calibration solution and the actual operating medium is close to and controllable, and can realize multi-point calibration, and control the accuracy of the instrument through the slope of the curve formed after multi-point calibration, The meter itself can also achieve zero point calibration, and when the zero point deviates, it can automatically realize blank deduction, which provides a good foundation for the next step of calibration;

(3) The scheme described in this disclosure supplements the gaps in the domestic industry in the chemical technology maintenance process, lays a good foundation for realizing the intelligent digitalization of equipment, improves the accuracy of the device as a whole, and makes chemical technology supervision more simplified and economical , Accurate and intelligent, it also plays a good technical guiding significance for the supervision and operation of the entire power industry.

Advantages of additional aspects of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Description of drawings

The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions of the present disclosure are used to explain the present disclosure, and do not constitute improper limitations to the present disclosure.

FIG. 1 is a schematic structural diagram of a water-cooling system medium salt content monitoring device for a large-scale condenser described in an embodiment of the present disclosure;

Among them, 1. Conductivity transmitter; 2. Water treatment system; 3. Pure water drive pump; 4. Pure water storage system; 5. Standard mother liquor mixing system; 6. Standard mother liquor identification system; 7. Pure water metering pump ; 8. Mother liquid metering pump; 9. Standard mother liquid; 10. Standard solution drive pump; 11. Water sample drive pump; 12. Demineralized water solenoid valve; 13. Internal cooling water solenoid valve; Salt water sampling unit; 16. Internal cooling water sampling unit; 17. External cooling water sampling unit; 18. Electrode; 19. Detection unit.

detailed description

The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, 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 disclosure belongs.

It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

Embodiment one:

The purpose of this embodiment is to provide a monitoring device for the salt content of the water-cooling system medium used in large-scale condensers.

As shown in Figure 1, the salt content monitoring device for the water-cooling system medium of the large-scale condenser provided in this embodiment is mainly to monitor the total salt content of the medium of the water-cooling system of the UHV DC system condenser, which is based on the detection unit. Center, an intelligent monitoring device with the transmitter as the control center. The meter device is technically invented and created on the basis of the original online conductivity meter, and the fully automatic calibration system is applied to the meter itself. In order to eliminate the errors caused by the environment, the detection and calibration of the meter are carried out under the entire enclosure, eliminating the need for System interference from the external environment. During the calibration process, the introduction of the water treatment system is a technological innovation in the field of online chemical instruments. It adds a medium zero point calibration for the calibration of the instrument, and also provides a blank water sample for the automatic configuration of the standard solution. All the components of the device design in this embodiment are controlled by the transmitter, which plays the role of "brain center" in the whole device.

A water-cooling system medium salt content monitoring device for a large-scale condenser, comprising: a conductivity transmitter, a water sample storage unit, a standard mother liquor mixing system, and a detection unit, the detection unit including a water sample storage area and electrodes, The electrode is connected to a conductivity transmitter; wherein, the detection unit is used to detect the total salt content of the water sample to be tested and to calibrate the conductivity transmitter;

The water sample storage units respectively store different water samples to be tested, and are connected to the detection unit through valves and pipelines. The water sample enters the detection unit;

The standard mother liquor mixing system is used for mixing pure water and standard mother liquor, and realizes the configuration of the standard solution based on the capacity allocation mechanism. The standard mother liquor mixing system is connected to the detection unit through the standard solution driving pump and pipeline. During the calibration stage , the standard solution enters the detection unit by controlling the opening and closing of the driving pump.

Further, the water sample storage unit includes a demineralized water sampling unit, an inner cooling water sampling unit, and an outer cooling water sampling unit, and the demineralized water sampling unit, the inner cooling water sampling unit, and the outer cooling water sampling unit control the water sampling unit through independent solenoid valves. At the same time, the water sample in the water sample storage unit is driven by the water sample driving pump to inject the water sample into the detection unit.

Further, the water sample drives the pump to distinguish the flow of demineralized water, inner cooling water and outer cooling water, and drives the water sample to enter the detection unit.

Further, the pure water storage system is used to store the pure water processed by the water treatment system, and the pure water storage system adopts a sealing method with a floating roof and a breathing device. Under the premise of realizing the isolation of the outside air, Keep the atmospheric pressure the same inside and outside.

Further, the pump driven by the standard solution is completely turned off during the actual production testing process, and is only turned on during the calibration process.

Further, the standard mother liquor mixing system is respectively connected with a pure water storage system and a standard mother liquor identification system, the pure water storage system is connected with a water treatment system for pure water preparation, and the standard mother liquor identification system is connected with different standard mother liquor Storage reagent bottle connection.

Further, the water treatment system is connected to the pure water storage system through a drive pump, and the flow of pure water is powered by the drive pump.

Further, the pure water storage system is connected with the standard mother liquor mixing system through a pure water metering pump, and the pure water quantity entering the standard mother liquor mixing system is controlled by the pure water metering pump, and the The inflow of the pure water provides power; the standard mother liquor mixing system is connected with the standard mother liquor identification system through a mother liquor metering pump, and the mother liquor metering pump controls the amount of mother liquor entering the standard mother liquor mixing system, and Power is provided for the inflow of the mother liquor.

Further, the standard mother solution includes demineralized water standard solution, inner cooling water standard solution and outer cooling water standard mother solution.

Specifically, for ease of understanding, the scheme described in this embodiment will be described in detail below in conjunction with the accompanying drawings:

A water-cooling system medium salt content monitoring device for a large-scale condenser described in this embodiment includes a conductivity transmitter, a water treatment system, a pure water storage system, a standard mother liquor identification system, a standard mother liquor mixing system, and a detection unit , standard solutions, electrodes, pipelines and sampling system parts. The components are described below:

Conductivity transmitter 1: It is fixed in the middle and upper part of the device, and plays the role of guidance, control and display in all processes, and is the only part of human intervention. The designer only needs to write the program into the background of the transmitter according to the needs of on-site operation and maintenance and testing in the early stage, and the instrument in the later stage enters the automation process without human intervention again. It connects various components such as electrodes, standard mother liquid mixing system and solenoid valves. The transmitter has a certain memory, storage and judgment function for all data, and can form a curve through the computer for later accident diagnosis.

Further, the conductivity transmitter is the data display, output and control part of the device described in this embodiment, and is the "central part" of the entire device. During operation, it is possible to judge the microcosmic field of total salt content ions in the water quality of the water conditioner, and the data can be remotely transmitted to the display system through the DCS system. Set the cycle parameters of the meter according to the situation. When the signal source triggers the sensitive button, the meter will automatically start the calibration function. The transmitter will automatically identify the output and execution of the next command through the signal from the sensor. The transmitter is used to realize the automatic detection, inspection and The important components in the calibration process play the role of "commander", and will play the role of overall coordination and control in data protection and stable operation of the system, which is the premise guarantee to ensure the automatic control of the instrument intelligent unit.

Water treatment system 2: It is the basis for the detection, inspection and calibration of the device described in this embodiment. It can not only provide the detection of background blank water samples, but also provide the basis for standard water samples for the configuration of standard samples. The working principle mainly depends on The magnetic force of the electric field realizes the activity of ions in the water quality, so that the positive ions and negative ions move in the opposite direction to the counter electrode, thereby realizing the desalination and purification of the water quality. The control of the water treatment system unit is completely obeyed by the instructions of the conductivity transmitter. In actual operation, it mainly plays an important role in "calibration".

Further, the water treatment system plays a basic role in system purification and is an important carrier for system operation. The calibration process of the instrument requires the dilution of the original mother liquor. If the pure system of the dilution carrier raw water cannot be guaranteed, the traceability of the system configuration standard solution will be affected, which will further affect the accuracy of the instrument itself. The water treatment system can not only provide the original blank for zero point calibration for the system, but also realize the automatic cleaning of the pipeline during operation and calibration. The water treatment system uses EDI technology to realize the additive effect of the electric field, so that the ions in the water medium can move forward and backward, while the hydrogen ions and anions can be intercepted by the water treatment device and finally reach the storage device.

Pure water drive pump 3: It is the power unit that controls the water production of the water treatment system and provides the source power for the movement of pure water. The start and stop of the pump mainly serve the water treatment system and the pure water storage system.

Pure water storage system 4: It plays the mainstay role in the device and is indispensable. It mainly stores pure water from the water treatment system 2. This system adopts the sealing method of floating roof and breathing device, which can not only isolate the outside air It can also keep the atmospheric pressure inside and outside the same. The system adopts various anti-corrosion methods to fully consider the corrosion of metal materials by desalinated water.

Further, the pure water storage system is the storage unit of the pure water system, which is an important part connecting the water treatment system and the standard mother liquor mixing system. The technical difficulty of the storage unit is to keep the pure water free from pollution. The system design conductivity monitoring unit, which can realize real-time measurement of water quality. When the pure water requirements cannot be met, the system will start sewage and water control measures. The system itself is designed with strict floating roof control and equipped with a breathing device, which can realize isolation from the atmosphere and maintain the storage unit With external pressure stalemate.

Standard mother liquid mixing system 5: This system mainly completes the preparation process of the standard solution. When receiving the calibration order issued by the transmitter, the mixing system will select the appropriate standard mother liquid according to the water sample to be tested. According to the different calibration points, select On-site measurement of different points of the standard mother liquor, when the injection of the standard mother liquor is completed, the system will complete the injection of pure water by turning on the metering pump 7, the injection of the standard mother liquor needs metering pump 8 to complete, and the injection of pure water needs metering pump 7 Complete, the cooperation of the metering pump is also the premise to realize the accuracy of the standard sample configuration. The standard mother liquor mixing system is also equipped with a corresponding standard solution detection unit for a calibration process of the standard solution.

Further, the standard mother liquor mixing system is a mixing area of pure water and mother liquor. The preparation mechanism of the standard solution is a volumetric preparation method. When the transmitter starts the calibration function, the mother liquor identification system passes the metering pump according to the order issued by the transmitter. Input the standard mother liquor into the mixing system according to the amount. When the standard mother liquor input reaches a certain amount, the dosage pump will stop inputting the mother liquor, and at the same time, the pure water metering pump will start. When the standard volume is reached, the system will automatically stop adding water, and the standard mother liquor will be mixed. The system finally turns on the automatic mixing mode, and finally realizes the mixing of the standard solution. This method uses the method of configuring the solution in the volumetric flask to realize the preparation of the standard solution. An automatic detection instrument is set in the system to realize the process of constant volume of the standard solution.

Standard mother liquid identification system 6: This system is mainly connected to the identification system of the front-end standard solution and the back-end standard mother liquid, and mainly extracts the standard mother liquid for calibration to the device, which is a temporary storage unit for the standard mother liquid.

Further, the standard mother liquid identification system is to automatically identify the standard solution according to the medium sampling, in order to achieve the standard solution with the same salt type as the monitored water sample, automatically realize the identification and input of the standard sample, thereby improving the accuracy of the meter itself, The identification system is connected to three different mixed salts, which correspond to the water quality of the internal cooling water, external cooling water and desalinated water of the condenser, so that complex logical thinking control can be realized. When the input standard mother liquor is unqualified or inconsistent with the original water sample , the system alarm can be realized automatically.

The pure water metering pump 7 and the mother liquid metering pump 8 both play a role in the realization of the calibration function. In order to ensure the accuracy of the two, their accuracy should be calibrated regularly.

Standard mother liquor 9: The standard mother liquor is mainly targeted standard solution prepared for the condenser system, desalted water standard mother liquor prepared for desalinated water, internal cooling water standard mother liquor prepared for internal cooling water, external cooling water standard mother liquor prepared for external cooling water, standard The mother solution is placed in a sealed reagent bottle, and the solenoid valve at the back end controls the injection of the standard solution.

Further, the standard mother solution is the medium for completing the inspection and calibration work, which has a one-to-one correspondence with the test medium of the condenser, and the types of salt are generally the same, but standard solutions with different concentrations will be prepared to achieve the linearity of calibration , the standard solution is the main traceability factor to realize the automatic calibration of the instrument, and it is the foundation of the measurement and transmission. The drug is generally produced by the National Standard Center. It is filled in the standard reagent bottle during the daily work process, and no air can enter the inside. During the calibration process, the metering pump at the front end is the power to output the standard solution to the detection unit.

Standard solution-driven pump 10: The metering pump is completely closed during the actual production and testing process, and is only turned on intermittently during the calibration process, and the transmitter's command controls the start and stop of the drive pump.

Water sample drive pump 11: The pump needs to realize the driving of the detection water sample, and inject the tested water sample into the detection unit. The flow rate of the water sample must meet the control requirements of the detection unit. To differentiate and drive.

Water sample solenoid valve (including demineralized water solenoid valve 12, internal cooling water solenoid valve 13, and external cooling water solenoid valve 14), the three solenoid valves mainly realize the circulation of water samples. The start and stop of the solenoid valves depend on the instructions of the transmitter and The start signal is sent to the transmitter, and the transmitter converts the signal into the water sample to drive the start and stop of the pump 11, and transmits the signal to the solenoid valve of the standard mother liquor.

Water sample storage unit (including demineralized water sampling unit 15, inner cooling water sampling unit 16, and outer cooling water sampling unit 17), the three water sample storage units mainly correspond to three different water systems of the condenser, and the demineralized water sampling unit 15 corresponds to demineralized water, The inner cooling water sampling unit 16 corresponds to the inner cooling water, the outer cooling water sampling unit 17 corresponds to the outer cooling water, and there is a one-to-one correspondence between the water sample storage unit and the solenoid valve.

Further, the water samples in the water sample storage unit are obtained from the internal cooling water system, the external cooling water system and the demineralized water system of the condenser system, and the sampling device will complete the sampling process of the water samples according to the instructions of the transmitter. The extraction process will be realized through the opening of the solenoid valve.

Electrode 18: The sensor of the device described in this embodiment can realize the transformation from chemical signal to electrical signal, and convert the conductivity chemical signal from 0 to the range into an electrical signal of 4-20mA, and finally convert it into the display of the secondary instrument Signal, the sensor itself is to measure the resistance of the specified area and convert it into a conductance signal, and the electrode will be completely immersed in the detection medium or standard solution during the detection process.

Detection unit 19: it is the core of the entire device described in this embodiment, and is the main component to complete the detection and calibration reaction of the total salt content. During the detection process, the water sample enters the detection unit through the inlet to realize the detection function of the meter through the principle of Ohm’s law . During the calibration process, the detection unit is also the main place for standard solution reaction and electrode induction. The entire process is completed through the detection system. The electrical signals displayed and controlled by the transmitter are obtained through the acquisition and conversion of electrodes in the detection system. In the detection system The chemical signal is the source of the detection and calibration. During the whole process, the reaction is isolated from the external environment. The reaction medium is not affected by external dust, temperature, humidity and other interference factors. The detection system is an important standard solution measurement equipment in the calibration process. .

Pipeline: The pipeline mainly connects all parts of the device, valves and standard solution, and plays a role in transmitting standard information throughout the device. The pipelines used in the device are made of PVC airtight material, which must not be in contact with the air, especially the connection between the pipeline and the valve, and attention should be paid to its airtightness.

Embodiment two:

The purpose of this embodiment is to provide a method for monitoring the salt content of a medium in a water cooling system for a large condenser.

A method for monitoring the salt content of a water-cooling system medium for a large-scale condenser, which uses the above-mentioned salt content monitoring device for a water-cooling system medium for a large condenser, including:

Detection stage: control the water sample to be tested to enter the detection unit through the conductivity transmitter, and realize the detection of the salt content of the water sample to be tested based on the principle of Ohm’s law through the electrodes;

Calibration stage: by controlling the volume ratio of pure water and standard mother liquor in the standard mother liquor mixing system, a standard solution that meets the preset requirements is obtained, and the standard solution in the standard mother liquor mixing system is controlled to enter the detection unit, based on electrode induction Perform a calibration of the conductivity transmitter.

Specifically, the detailed steps of the method for monitoring the salt content of the water-cooling system medium for a large condenser are as follows:

The display data of the design indicators of the device described in this embodiment can be displayed by the transmitter, and its basic control program is also written into the transmitter, which can complete the control and issuance of all instructions. The specific process is as follows:

When the calibration order of the device and system is issued, the water treatment of the system will start to work, and the basic preparation and detection process of pure water will be completed. Under the action of the site, a water sample of 0.060μS/cm can be generated, and the system will concentrate the water sample in the Pure water storage system 4. In order to ensure that the pure water stays in a closed purifier for a long time, the system adopts the perspective of intrinsic safety to seal and manage the storage unit, completely realizing the isolation from the atmospheric system and the external environment. The device is based on the water sample storage unit ( The sampling signal issued by the demineralized water sampling unit 15 or the internal cooling water sampling unit 16 or the external cooling water sampling unit 17) completes the command signal of the conductivity transmitter 1 and corresponds to the sampling process of the standard mother liquor 9. In order to achieve system accuracy, the standard mother liquor The identification system 6 verifies the accuracy of the standard mother liquor again. The system realizes the configuration process of the standard solution through the pure water metering pump 7 and the mother liquor metering pump 8. The whole process will be completed in the standard mother liquor mixing system 5, and finally enter according to the order of the transmitter. The detection unit completes the input process of the standard solution, and the electrode 18 transmits and writes the detection signal and calibration information to the conductivity transmitter 1, which will complete the entire "calibration" process. This disclosure aims to start from reality and approach daily operation. The inspection and calibration process has been completed, the system detection is accurate and the deviation is small, which greatly improves the accuracy of the instrument and the safety and stability of the unit. The device described in this embodiment can identify different production water samples for UHV engineering condensers through the sampling system, and the detection and calibration are carried out regularly and effectively.

The device and method for monitoring the salt content of the water-cooling system medium for large-scale condensers provided by the above embodiments can be fully realized and have broad application prospects.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Although the specific implementation of the present disclosure has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present disclosure. Those skilled in the art should understand that on the basis of the technical solutions of the present disclosure, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present disclosure.

Claims (10)

1. A water cooling system medium salinity monitoring devices for large-scale phase modifier, its characterized in that includes: the detection unit comprises a water sample storage area and an electrode, and is connected with the conductivity transmitter through the electrode; the detection unit is used for detecting the total salt content of the water sample to be detected and calibrating the conductivity transmitter;

the water sample storage units are respectively used for storing different water samples to be detected and are connected with the detection unit through valves and pipelines, wherein in the detection stage, the water samples to be detected enter the detection unit through the control of opening and closing of the valves by the water sample storage units;

the standard mother liquor mixing system is used for mixing pure water and standard mother liquor, realizes the configuration of standard solution based on a capacity configuration mechanism, is connected with the detection unit through a standard solution driving pump and a pipeline, and realizes that the standard solution enters the detection unit by controlling the opening and closing of the driving pump in a calibration stage.

2. The device for monitoring the medium salt content of the water cooling system for the large phase modulator as claimed in claim 1, wherein the water sample storage unit comprises a demineralized water sampling unit, an internal cooling water sampling unit and an external cooling water sampling unit, the demineralized water sampling unit, the internal cooling water sampling unit and the external cooling water sampling unit respectively control the circulation of water samples through independent electromagnetic valves, and simultaneously, the water samples in the water sample storage unit drive the water samples to be injected into the detection unit through a water sample driving pump.

3. The device for monitoring the salinity of the medium in the water cooling system of the large-scale phase modifier as claimed in claim 2, wherein the water sample driving pump distinguishes the flow of the demineralized water, the internal cooling water and the external cooling water and drives the water sample into the detection unit.

4. The device for monitoring the salt content of the medium of the water cooling system for the large phase modulator as claimed in claim 1, wherein the pure water storage system is used for storing the pure water obtained by the water treatment system, and the pure water storage system adopts a sealing mode of a floating roof and a breathing device, and the inside and outside of the atmospheric pressure are kept the same on the premise of realizing the function of isolating the outside air.

5. The apparatus for monitoring the salt content of the medium in the water cooling system of the large phase modulator as claimed in claim 1, wherein the standard solution driving pump is in a completely closed state during the actual production detection process and is only turned on during the calibration process.

6. The device for monitoring the salt content of the medium of the water cooling system for the large phase modulator as claimed in claim 1, wherein the standard mother liquor mixing system is respectively connected with a pure water storage system and a standard mother liquor identification system, the pure water storage system is connected with a water treatment system for pure water preparation, and the standard mother liquor identification system is connected with storage reagent bottles of different standard mother liquors.

7. The device for monitoring the salt content of the medium in the water cooling system of the large-scale phase modifier according to claim 6, wherein the water treatment system is connected with the pure water storage system through a driving pump, and the driving pump is used for providing power for the flow of the pure water.

8. The device for monitoring the medium salt content of the water cooling system for the large phase modifier according to claim 6, wherein the pure water storage system is connected with the standard mother liquor mixing system through a pure water metering pump, the pure water metering pump is used for controlling the amount of pure water entering the standard mother liquor mixing system and providing power for the inflow of the pure water; the standard mother liquor mixing system is connected with the standard mother liquor recognition system through a mother liquor metering pump, the mother liquor amount entering the standard mother liquor mixing system is controlled through the mother liquor metering pump, and power is provided for the inflow of the mother liquor.

9. The apparatus for monitoring the salt content of the medium in the water cooling system of the large phase modulator as claimed in claim 8, wherein the standard mother liquor comprises a demineralized water standard solution, an internal cooling water standard solution and an external cooling water standard mother liquor.

10. A method for monitoring the salt content of a medium of a water cooling system of a large phase modulator, which is characterized by using the device for monitoring the salt content of the medium of the water cooling system of the large phase modulator as claimed in any one of claims 1 to 9, and comprises the following steps:

a detection stage: the conductivity transmitter controls a water sample to be detected to enter the detection unit, and the detection of the salt content of the water sample to be detected is realized through the electrodes based on the ohm's law principle;

a calibration stage: the method comprises the steps of obtaining a standard solution meeting preset requirements by controlling the capacity ratio of pure water to standard mother liquor in a standard mother liquor mixing system, controlling the standard solution in the standard mother liquor mixing system to enter a detection unit, and calibrating a conductivity transmitter based on electrode induction.

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